Commit b7104231af68c26b850325748a64f15119a2dd69 | zig

build.zig+1-1

...	@@ -304,7 +304,7 @@ pub fn build(b: *std.Build) !void {	...	@@ -304,7 +304,7 @@ pub fn build(b: *std.Build) !void {
304	if (enable_llvm) {	304	if (enable_llvm) {
305	const cmake_cfg = if (static_llvm) null else blk: {	305	const cmake_cfg = if (static_llvm) null else blk: {
306	if (findConfigH(b, config_h_path_option)) \|config_h_path\| {	306	if (findConfigH(b, config_h_path_option)) \|config_h_path\| {
307	const file_contents = fs.cwd().readFileAlloc(b.allocator, config_h_path, max_config_h_bytes) catch unreachable;	307	const file_contents = fs.cwd().readFileAlloc(config_h_path, b.allocator, .limited(max_config_h_bytes)) catch unreachable;
308	break :blk parseConfigH(b, file_contents);	308	break :blk parseConfigH(b, file_contents);
309	} else {	309	} else {
310	std.log.warn("config.h could not be located automatically. Consider providing it explicitly via \"-Dconfig_h\"", .{});	310	std.log.warn("config.h could not be located automatically. Consider providing it explicitly via \"-Dconfig_h\"", .{});

lib/compiler/aro/aro/Attribute/names.zig+2-3

...	@@ -117,8 +117,7 @@ pub fn nameFromUniqueIndex(index: u16, buf: []u8) []u8 {	...	@@ -117,8 +117,7 @@ pub fn nameFromUniqueIndex(index: u16, buf: []u8) []u8 {
117		117
118	var node_index: u16 = 0;	118	var node_index: u16 = 0;
119	var count: u16 = index;	119	var count: u16 = index;
120	var fbs = std.io.fixedBufferStream(buf);	120	var w: std.Io.Writer = .fixed(buf);
121	const w = fbs.writer();
122		121
123	while (true) {	122	while (true) {
124	var sibling_index = dafsa[node_index].child_index;	123	var sibling_index = dafsa[node_index].child_index;
...	@@ -140,7 +139,7 @@ pub fn nameFromUniqueIndex(index: u16, buf: []u8) []u8 {	...	@@ -140,7 +139,7 @@ pub fn nameFromUniqueIndex(index: u16, buf: []u8) []u8 {
140	if (count == 0) break;	139	if (count == 0) break;
141	}	140	}
142		141
143	return fbs.getWritten();	142	return w.buffered();
144	}	143	}
145		144
146	const Node = packed struct(u32) {	145	const Node = packed struct(u32) {

lib/compiler/aro/aro/Compilation.zig+6-24

 @@ -1308,13 +1308,7 @@ fn addSourceFromPathExtra(comp: *Compilation, path: []const u8, kind: Source.Kin
         return error.FileNotFound;
     }
-    const file = try comp.cwd.openFile(path, .{});
+    const contents = try comp.cwd.readFileAlloc(path, comp.gpa, .limited(std.math.maxInt(u32)));
-    defer file.close();
-    const contents = file.readToEndAlloc(comp.gpa, std.math.maxInt(u32)) catch |err| switch (err) {
-        error.FileTooBig => return error.StreamTooLong,
-        else => |e| return e,
-    };
     errdefer comp.gpa.free(contents);
     return comp.addSourceFromOwnedBuffer(contents, path, kind);
 @@ -1433,19 +1427,7 @@ fn getFileContents(comp: *Compilation, path: []const u8, limit: ?u32) ![]const u
         return error.FileNotFound;
     }
-    const file = try comp.cwd.openFile(path, .{});
+    return comp.cwd.readFileAlloc(path, comp.gpa, .limited(limit orelse std.math.maxInt(u32)));
-    defer file.close();
-    var buf = std.array_list.Managed(u8).init(comp.gpa);
-    defer buf.deinit();
-    const max = limit orelse std.math.maxInt(u32);
-    file.deprecatedReader().readAllArrayList(&buf, max) catch |e| switch (e) {
-        error.StreamTooLong => if (limit == null) return e,
-        else => return e,
-    };
-    return buf.toOwnedSlice();
 }
 pub fn findEmbed(
 @@ -1645,8 +1627,8 @@ test "addSourceFromReader" {
             var comp = Compilation.init(std.testing.allocator, std.fs.cwd());
             defer comp.deinit();
-            var buf_reader = std.io.fixedBufferStream(str);
+            var buf_reader: std.Io.Reader = .fixed(str);
-            const source = try comp.addSourceFromReader(buf_reader.reader(), "path", .user);
+            const source = try comp.addSourceFromReader(&buf_reader, "path", .user);
             try std.testing.expectEqualStrings(expected, source.buf);
             try std.testing.expectEqual(warning_count, @as(u32, @intCast(comp.diagnostics.list.items.len)));
 @@ -1727,8 +1709,8 @@ test "ignore BOM at beginning of file" {
             var comp = Compilation.init(std.testing.allocator, std.fs.cwd());
             defer comp.deinit();
-            var buf_reader = std.io.fixedBufferStream(buf);
+            var buf_reader: std.Io.Reader = .fixed(buf);
-            const source = try comp.addSourceFromReader(buf_reader.reader(), "file.c", .user);
+            const source = try comp.addSourceFromReader(&buf_reader, "file.c", .user);
             const expected_output = if (mem.startsWith(u8, buf, BOM)) buf[BOM.len..] else buf;
             try std.testing.expectEqualStrings(expected_output, source.buf);
         }

lib/compiler/aro/aro/Diagnostics.zig+7-7

...	@@ -322,14 +322,14 @@ pub fn addExtra(	...	@@ -322,14 +322,14 @@ pub fn addExtra(
322	return error.FatalError;	322	return error.FatalError;
323	}	323	}
324		324
325	pub fn render(comp: *Compilation, config: std.io.tty.Config) void {	325	pub fn render(comp: *Compilation, config: std.Io.tty.Config) void {
326	if (comp.diagnostics.list.items.len == 0) return;	326	if (comp.diagnostics.list.items.len == 0) return;
327	var buffer: [1000]u8 = undefined;	327	var buffer: [1000]u8 = undefined;
328	var m = defaultMsgWriter(config, &buffer);	328	var m = defaultMsgWriter(config, &buffer);
329	defer m.deinit();	329	defer m.deinit();
330	renderMessages(comp, &m);	330	renderMessages(comp, &m);
331	}	331	}
332	pub fn defaultMsgWriter(config: std.io.tty.Config, buffer: []u8) MsgWriter {	332	pub fn defaultMsgWriter(config: std.Io.tty.Config, buffer: []u8) MsgWriter {
333	return MsgWriter.init(config, buffer);	333	return MsgWriter.init(config, buffer);
334	}	334	}
335		335
...	@@ -451,7 +451,7 @@ pub fn renderMessage(comp: *Compilation, m: anytype, msg: Message) void {	...	@@ -451,7 +451,7 @@ pub fn renderMessage(comp: *Compilation, m: anytype, msg: Message) void {
451	},	451	},
452	.normalized => {	452	.normalized => {
453	const f = struct {	453	const f = struct {
454	pub fn f(bytes: []const u8, writer: *std.io.Writer) std.io.Writer.Error!void {	454	pub fn f(bytes: []const u8, writer: *std.Io.Writer) std.Io.Writer.Error!void {
455	var it: std.unicode.Utf8Iterator = .{	455	var it: std.unicode.Utf8Iterator = .{
456	.bytes = bytes,	456	.bytes = bytes,
457	.i = 0,	457	.i = 0,
...	@@ -526,10 +526,10 @@ fn tagKind(d: *Diagnostics, tag: Tag, langopts: LangOpts) Kind {	...	@@ -526,10 +526,10 @@ fn tagKind(d: *Diagnostics, tag: Tag, langopts: LangOpts) Kind {
526	}	526	}
527		527
528	const MsgWriter = struct {	528	const MsgWriter = struct {
529	writer: *std.io.Writer,	529	writer: *std.Io.Writer,
530	config: std.io.tty.Config,	530	config: std.Io.tty.Config,
531		531
532	fn init(config: std.io.tty.Config, buffer: []u8) MsgWriter {	532	fn init(config: std.Io.tty.Config, buffer: []u8) MsgWriter {
533	return .{	533	return .{
534	.writer = std.debug.lockStderrWriter(buffer),	534	.writer = std.debug.lockStderrWriter(buffer),
535	.config = config,	535	.config = config,
...	@@ -549,7 +549,7 @@ const MsgWriter = struct {	...	@@ -549,7 +549,7 @@ const MsgWriter = struct {
549	m.writer.writeAll(msg) catch {};	549	m.writer.writeAll(msg) catch {};
550	}	550	}
551		551
552	fn setColor(m: *MsgWriter, color: std.io.tty.Color) void {	552	fn setColor(m: *MsgWriter, color: std.Io.tty.Color) void {
553	m.config.setColor(m.writer, color) catch {};	553	m.config.setColor(m.writer, color) catch {};
554	}	554	}
555		555

lib/compiler/aro/aro/Driver.zig+3-3

...	@@ -519,8 +519,8 @@ fn option(arg: []const u8, name: []const u8) ?[]const u8 {	...	@@ -519,8 +519,8 @@ fn option(arg: []const u8, name: []const u8) ?[]const u8 {
519		519
520	fn addSource(d: *Driver, path: []const u8) !Source {	520	fn addSource(d: *Driver, path: []const u8) !Source {
521	if (mem.eql(u8, "-", path)) {	521	if (mem.eql(u8, "-", path)) {
522	const stdin = std.fs.File.stdin().deprecatedReader();	522	var stdin_reader: std.fs.File.Reader = .initStreaming(.stdin(), &.{});
523	const input = try stdin.readAllAlloc(d.comp.gpa, std.math.maxInt(u32));	523	const input = try stdin_reader.interface.allocRemaining(d.comp.gpa, .limited(std.math.maxInt(u32)));
524	defer d.comp.gpa.free(input);	524	defer d.comp.gpa.free(input);
525	return d.comp.addSourceFromBuffer("<stdin>", input);	525	return d.comp.addSourceFromBuffer("<stdin>", input);
526	}	526	}
...	@@ -544,7 +544,7 @@ pub fn renderErrors(d: *Driver) void {	...	@@ -544,7 +544,7 @@ pub fn renderErrors(d: *Driver) void {
544	Diagnostics.render(d.comp, d.detectConfig(std.fs.File.stderr()));	544	Diagnostics.render(d.comp, d.detectConfig(std.fs.File.stderr()));
545	}	545	}
546		546
547	pub fn detectConfig(d: *Driver, file: std.fs.File) std.io.tty.Config {	547	pub fn detectConfig(d: *Driver, file: std.fs.File) std.Io.tty.Config {
548	if (d.color == true) return .escape_codes;	548	if (d.color == true) return .escape_codes;
549	if (d.color == false) return .no_color;	549	if (d.color == false) return .no_color;
550		550

lib/compiler/aro/aro/Tree.zig+8-8

...	@@ -800,7 +800,7 @@ pub fn nodeLoc(tree: *const Tree, node: NodeIndex) ?Source.Location {	...	@@ -800,7 +800,7 @@ pub fn nodeLoc(tree: *const Tree, node: NodeIndex) ?Source.Location {
800	return tree.tokens.items(.loc)[@intFromEnum(tok_i)];	800	return tree.tokens.items(.loc)[@intFromEnum(tok_i)];
801	}	801	}
802		802
803	pub fn dump(tree: *const Tree, config: std.io.tty.Config, writer: anytype) !void {	803	pub fn dump(tree: *const Tree, config: std.Io.tty.Config, writer: anytype) !void {
804	const mapper = tree.comp.string_interner.getFastTypeMapper(tree.comp.gpa) catch tree.comp.string_interner.getSlowTypeMapper();	804	const mapper = tree.comp.string_interner.getFastTypeMapper(tree.comp.gpa) catch tree.comp.string_interner.getSlowTypeMapper();
805	defer mapper.deinit(tree.comp.gpa);	805	defer mapper.deinit(tree.comp.gpa);
806		806
...	@@ -855,17 +855,17 @@ fn dumpNode(	...	@@ -855,17 +855,17 @@ fn dumpNode(
855	node: NodeIndex,	855	node: NodeIndex,
856	level: u32,	856	level: u32,
857	mapper: StringInterner.TypeMapper,	857	mapper: StringInterner.TypeMapper,
858	config: std.io.tty.Config,	858	config: std.Io.tty.Config,
859	w: anytype,	859	w: anytype,
860	) !void {	860	) !void {
861	const delta = 2;	861	const delta = 2;
862	const half = delta / 2;	862	const half = delta / 2;
863	const TYPE = std.io.tty.Color.bright_magenta;	863	const TYPE = std.Io.tty.Color.bright_magenta;
864	const TAG = std.io.tty.Color.bright_cyan;	864	const TAG = std.Io.tty.Color.bright_cyan;
865	const IMPLICIT = std.io.tty.Color.bright_blue;	865	const IMPLICIT = std.Io.tty.Color.bright_blue;
866	const NAME = std.io.tty.Color.bright_red;	866	const NAME = std.Io.tty.Color.bright_red;
867	const LITERAL = std.io.tty.Color.bright_green;	867	const LITERAL = std.Io.tty.Color.bright_green;
868	const ATTRIBUTE = std.io.tty.Color.bright_yellow;	868	const ATTRIBUTE = std.Io.tty.Color.bright_yellow;
869	std.debug.assert(node != .none);	869	std.debug.assert(node != .none);
870		870
871	const tag = tree.nodes.items(.tag)[@intFromEnum(node)];	871	const tag = tree.nodes.items(.tag)[@intFromEnum(node)];

lib/compiler/aro/aro/target.zig+2-3

...	@@ -578,8 +578,7 @@ pub fn toLLVMTriple(target: std.Target, buf: []u8) []const u8 {	...	@@ -578,8 +578,7 @@ pub fn toLLVMTriple(target: std.Target, buf: []u8) []const u8 {
578	// 64 bytes is assumed to be large enough to hold any target triple; increase if necessary	578	// 64 bytes is assumed to be large enough to hold any target triple; increase if necessary
579	std.debug.assert(buf.len >= 64);	579	std.debug.assert(buf.len >= 64);
580		580
581	var stream = std.io.fixedBufferStream(buf);	581	var writer: std.Io.Writer = .fixed(buf);
582	const writer = stream.writer();
583		582
584	const llvm_arch = switch (target.cpu.arch) {	583	const llvm_arch = switch (target.cpu.arch) {
585	.arm => "arm",	584	.arm => "arm",
...	@@ -719,7 +718,7 @@ pub fn toLLVMTriple(target: std.Target, buf: []u8) []const u8 {	...	@@ -719,7 +718,7 @@ pub fn toLLVMTriple(target: std.Target, buf: []u8) []const u8 {
719	.ohoseabi => "ohoseabi",	718	.ohoseabi => "ohoseabi",
720	};	719	};
721	writer.writeAll(llvm_abi) catch unreachable;	720	writer.writeAll(llvm_abi) catch unreachable;
722	return stream.getWritten();	721	return writer.buffered();
723	}	722	}
724		723
725	test "alignment functions - smoke test" {	724	test "alignment functions - smoke test" {

lib/compiler/aro/backend/Ir.zig+12-12

lib/compiler/aro_translate_c.zig+1-1

...	@@ -1783,7 +1783,7 @@ fn renderErrorsAndExit(comp: *aro.Compilation) noreturn {	...	@@ -1783,7 +1783,7 @@ fn renderErrorsAndExit(comp: *aro.Compilation) noreturn {
1783	defer std.process.exit(1);	1783	defer std.process.exit(1);
1784		1784
1785	var buffer: [1000]u8 = undefined;	1785	var buffer: [1000]u8 = undefined;
1786	var writer = aro.Diagnostics.defaultMsgWriter(std.io.tty.detectConfig(std.fs.File.stderr()), &buffer);	1786	var writer = aro.Diagnostics.defaultMsgWriter(std.Io.tty.detectConfig(std.fs.File.stderr()), &buffer);
1787	defer writer.deinit(); // writer deinit must run before exit so that stderr is flushed	1787	defer writer.deinit(); // writer deinit must run before exit so that stderr is flushed
1788		1788
1789	var saw_error = false;	1789	var saw_error = false;

lib/compiler/build_runner.zig+10-10

...	@@ -1,7 +1,6 @@	...	@@ -1,7 +1,6 @@
1	const std = @import("std");	1	const std = @import("std");
2	const builtin = @import("builtin");	2	const builtin = @import("builtin");
3	const assert = std.debug.assert;	3	const assert = std.debug.assert;
4	const io = std.io;
5	const fmt = std.fmt;	4	const fmt = std.fmt;
6	const mem = std.mem;	5	const mem = std.mem;
7	const process = std.process;	6	const process = std.process;
...	@@ -11,8 +10,9 @@ const Watch = std.Build.Watch;	...	@@ -11,8 +10,9 @@ const Watch = std.Build.Watch;
11	const WebServer = std.Build.WebServer;	10	const WebServer = std.Build.WebServer;
12	const Allocator = std.mem.Allocator;	11	const Allocator = std.mem.Allocator;
13	const fatal = std.process.fatal;	12	const fatal = std.process.fatal;
14	const Writer = std.io.Writer;	13	const Writer = std.Io.Writer;
15	const runner = @This();	14	const runner = @This();
		15	const tty = std.Io.tty;
16		16
17	pub const root = @import("@build");	17	pub const root = @import("@build");
18	pub const dependencies = @import("@dependencies");	18	pub const dependencies = @import("@dependencies");
...	@@ -576,7 +576,7 @@ const Run = struct {	...	@@ -576,7 +576,7 @@ const Run = struct {
576		576
577	claimed_rss: usize,	577	claimed_rss: usize,
578	summary: Summary,	578	summary: Summary,
579	ttyconf: std.io.tty.Config,	579	ttyconf: tty.Config,
580	stderr: File,	580	stderr: File,
581		581
582	fn cleanExit(run: Run) void {	582	fn cleanExit(run: Run) void {
...	@@ -819,7 +819,7 @@ const PrintNode = struct {	...	@@ -819,7 +819,7 @@ const PrintNode = struct {
819	last: bool = false,	819	last: bool = false,
820	};	820	};
821		821
822	fn printPrefix(node: PrintNode, stderr: Writer, ttyconf: std.io.tty.Config) !void {	822	fn printPrefix(node: PrintNode, stderr: Writer, ttyconf: tty.Config) !void {
823	const parent = node.parent orelse return;	823	const parent = node.parent orelse return;
824	if (parent.parent == null) return;	824	if (parent.parent == null) return;
825	try printPrefix(parent, stderr, ttyconf);	825	try printPrefix(parent, stderr, ttyconf);
...	@@ -833,7 +833,7 @@ fn printPrefix(node: PrintNode, stderr: Writer, ttyconf: std.io.tty.Config) !v	...	@@ -833,7 +833,7 @@ fn printPrefix(node: PrintNode, stderr: Writer, ttyconf: std.io.tty.Config) !v
833	}	833	}
834	}	834	}
835		835
836	fn printChildNodePrefix(stderr: *Writer, ttyconf: std.io.tty.Config) !void {	836	fn printChildNodePrefix(stderr: *Writer, ttyconf: tty.Config) !void {
837	try stderr.writeAll(switch (ttyconf) {	837	try stderr.writeAll(switch (ttyconf) {
838	.no_color, .windows_api => "+- ",	838	.no_color, .windows_api => "+- ",
839	.escape_codes => "\x1B\x28\x30\x6d\x71\x1B\x28\x42 ", // └─	839	.escape_codes => "\x1B\x28\x30\x6d\x71\x1B\x28\x42 ", // └─
...	@@ -843,7 +843,7 @@ fn printChildNodePrefix(stderr: *Writer, ttyconf: std.io.tty.Config) !void {	...	@@ -843,7 +843,7 @@ fn printChildNodePrefix(stderr: *Writer, ttyconf: std.io.tty.Config) !void {
843	fn printStepStatus(	843	fn printStepStatus(
844	s: *Step,	844	s: *Step,
845	stderr: *Writer,	845	stderr: *Writer,
846	ttyconf: std.io.tty.Config,	846	ttyconf: tty.Config,
847	run: *const Run,	847	run: *const Run,
848	) !void {	848	) !void {
849	switch (s.state) {	849	switch (s.state) {
...	@@ -923,7 +923,7 @@ fn printStepStatus(	...	@@ -923,7 +923,7 @@ fn printStepStatus(
923	fn printStepFailure(	923	fn printStepFailure(
924	s: *Step,	924	s: *Step,
925	stderr: *Writer,	925	stderr: *Writer,
926	ttyconf: std.io.tty.Config,	926	ttyconf: tty.Config,
927	) !void {	927	) !void {
928	if (s.result_error_bundle.errorMessageCount() > 0) {	928	if (s.result_error_bundle.errorMessageCount() > 0) {
929	try ttyconf.setColor(stderr, .red);	929	try ttyconf.setColor(stderr, .red);
...	@@ -977,7 +977,7 @@ fn printTreeStep(	...	@@ -977,7 +977,7 @@ fn printTreeStep(
977	s: *Step,	977	s: *Step,
978	run: *const Run,	978	run: *const Run,
979	stderr: *Writer,	979	stderr: *Writer,
980	ttyconf: std.io.tty.Config,	980	ttyconf: tty.Config,
981	parent_node: *PrintNode,	981	parent_node: *PrintNode,
982	step_stack: std.AutoArrayHashMapUnmanaged(Step, void),	982	step_stack: std.AutoArrayHashMapUnmanaged(Step, void),
983	) !void {	983	) !void {
...	@@ -1494,9 +1494,9 @@ fn uncleanExit() error{UncleanExit} {	...	@@ -1494,9 +1494,9 @@ fn uncleanExit() error{UncleanExit} {
1494	const Color = std.zig.Color;	1494	const Color = std.zig.Color;
1495	const Summary = enum { all, new, failures, none };	1495	const Summary = enum { all, new, failures, none };
1496		1496
1497	fn get_tty_conf(color: Color, stderr: File) std.io.tty.Config {	1497	fn get_tty_conf(color: Color, stderr: File) tty.Config {
1498	return switch (color) {	1498	return switch (color) {
1499	.auto => std.io.tty.detectConfig(stderr),	1499	.auto => tty.detectConfig(stderr),
1500	.on => .escape_codes,	1500	.on => .escape_codes,
1501	.off => .no_color,	1501	.off => .no_color,
1502	};	1502	};

lib/compiler/libc.zig-1

...	@@ -1,6 +1,5 @@	...	@@ -1,6 +1,5 @@
1	const std = @import("std");	1	const std = @import("std");
2	const mem = std.mem;	2	const mem = std.mem;
3	const io = std.io;
4	const LibCInstallation = std.zig.LibCInstallation;	3	const LibCInstallation = std.zig.LibCInstallation;
5		4
6	const usage_libc =	5	const usage_libc =

lib/compiler/reduce.zig+3-4

...	@@ -381,7 +381,7 @@ fn transformationsToFixups(	...	@@ -381,7 +381,7 @@ fn transformationsToFixups(
381	}	381	}
382	}	382	}
383		383
384	var other_source: std.io.Writer.Allocating = .init(gpa);	384	var other_source: std.Io.Writer.Allocating = .init(gpa);
385	defer other_source.deinit();	385	defer other_source.deinit();
386	try other_source.writer.writeAll("struct {\n");	386	try other_source.writer.writeAll("struct {\n");
387	try other_file_ast.render(gpa, &other_source.writer, inlined_fixups);	387	try other_file_ast.render(gpa, &other_source.writer, inlined_fixups);
...	@@ -398,10 +398,9 @@ fn transformationsToFixups(	...	@@ -398,10 +398,9 @@ fn transformationsToFixups(
398		398
399	fn parse(gpa: Allocator, file_path: []const u8) !Ast {	399	fn parse(gpa: Allocator, file_path: []const u8) !Ast {
400	const source_code = std.fs.cwd().readFileAllocOptions(	400	const source_code = std.fs.cwd().readFileAllocOptions(
401	gpa,
402	file_path,	401	file_path,
403	std.math.maxInt(u32),	402	gpa,
404	null,	403	.limited(std.math.maxInt(u32)),
405	.fromByteUnits(1),	404	.fromByteUnits(1),
406	0,	405	0,
407	) catch \|err\| {	406	) catch \|err\| {

lib/compiler/resinator/ast.zig+3-3

...	@@ -22,7 +22,7 @@ pub const Tree = struct {	...	@@ -22,7 +22,7 @@ pub const Tree = struct {
22	return @alignCast(@fieldParentPtr("base", self.node));	22	return @alignCast(@fieldParentPtr("base", self.node));
23	}	23	}
24		24
25	pub fn dump(self: Tree, writer: std.io.Writer) !void {	25	pub fn dump(self: Tree, writer: std.Io.Writer) !void {
26	try self.node.dump(self, writer, 0);	26	try self.node.dump(self, writer, 0);
27	}	27	}
28	};	28	};
...	@@ -726,9 +726,9 @@ pub const Node = struct {	...	@@ -726,9 +726,9 @@ pub const Node = struct {
726	pub fn dump(	726	pub fn dump(
727	node: *const Node,	727	node: *const Node,
728	tree: *const Tree,	728	tree: *const Tree,
729	writer: *std.io.Writer,	729	writer: *std.Io.Writer,
730	indent: usize,	730	indent: usize,
731	) std.io.Writer.Error!void {	731	) std.Io.Writer.Error!void {
732	try writer.splatByteAll(' ', indent);	732	try writer.splatByteAll(' ', indent);
733	try writer.writeAll(@tagName(node.id));	733	try writer.writeAll(@tagName(node.id));
734	switch (node.id) {	734	switch (node.id) {

lib/compiler/resinator/cli.zig+4-4

lib/compiler/resinator/errors.zig+4-4

lib/compiler/resinator/main.zig+10-6

 @@ -24,7 +24,7 @@ pub fn main() !void {
     const arena = arena_state.allocator();
     const stderr = std.fs.File.stderr();
-    const stderr_config = std.io.tty.detectConfig(stderr);
+    const stderr_config = std.Io.tty.detectConfig(stderr);
     const args = try std.process.argsAlloc(allocator);
     defer std.process.argsFree(allocator, args);
 @@ -164,13 +164,14 @@ pub fn main() !void {
         } else {
             switch (options.input_source) {
                 .stdio => |file| {
-                    break :full_input file.readToEndAlloc(allocator, std.math.maxInt(usize)) catch |err| {
+                    var file_reader = file.reader(&.{});
+                    break :full_input file_reader.interface.allocRemaining(allocator, .unlimited) catch |err| {
                         try error_handler.emitMessage(allocator, .err, "unable to read input from stdin: {s}", .{@errorName(err)});
                         std.process.exit(1);
                     };
                 },
                 .filename => |input_filename| {
-                    break :full_input std.fs.cwd().readFileAlloc(allocator, input_filename, std.math.maxInt(usize)) catch |err| {
+                    break :full_input std.fs.cwd().readFileAlloc(input_filename, allocator, .unlimited) catch |err| {
                         try error_handler.emitMessage(allocator, .err, "unable to read input file path '{s}': {s}", .{ input_filename, @errorName(err) });
                         std.process.exit(1);
                     };
 @@ -462,7 +463,10 @@ const IoStream = struct {
         pub fn readAll(self: Source, allocator: std.mem.Allocator) !Data {
             return switch (self) {
                 inline .file, .stdio => |file| .{
-                    .bytes = try file.readToEndAlloc(allocator, std.math.maxInt(usize)),
+                    .bytes = b: {
+                        var file_reader = file.reader(&.{});
+                        break :b try file_reader.interface.allocRemaining(allocator, .unlimited);
+                    },
                     .needs_free = true,
                 },
                 .memory => |list| .{ .bytes = list.items, .needs_free = false },
 @@ -621,7 +625,7 @@ const SourceMappings = @import("source_mapping.zig").SourceMappings;
 const ErrorHandler = union(enum) {
     server: std.zig.Server,
-    tty: std.io.tty.Config,
+    tty: std.Io.tty.Config,
     pub fn emitCliDiagnostics(
         self: *ErrorHandler,
 @@ -984,7 +988,7 @@ const MsgWriter = struct {
         m.buf.appendSlice(msg) catch {};
     }
-    pub fn setColor(m: *MsgWriter, color: std.io.tty.Color) void {
+    pub fn setColor(m: *MsgWriter, color: std.Io.tty.Color) void {
         _ = m;
         _ = color;
     }

lib/compiler/resinator/res.zig+3-3

lib/compiler/resinator/utils.zig+1-2

...	@@ -1,7 +1,6 @@	...	@@ -1,7 +1,6 @@
1	const std = @import("std");	1	const std = @import("std");
2	const builtin = @import("builtin");	2	const builtin = @import("builtin");
3		3
4	/// Like std.io.FixedBufferStream but does no bounds checking
5	pub const UncheckedSliceWriter = struct {	4	pub const UncheckedSliceWriter = struct {
6	const Self = @This();	5	const Self = @This();
7		6
...	@@ -86,7 +85,7 @@ pub const ErrorMessageType = enum { err, warning, note };	...	@@ -86,7 +85,7 @@ pub const ErrorMessageType = enum { err, warning, note };
86		85
87	/// Used for generic colored errors/warnings/notes, more context-specific error messages	86	/// Used for generic colored errors/warnings/notes, more context-specific error messages
88	/// are handled elsewhere.	87	/// are handled elsewhere.
89	pub fn renderErrorMessage(writer: *std.io.Writer, config: std.io.tty.Config, msg_type: ErrorMessageType, comptime format: []const u8, args: anytype) !void {	88	pub fn renderErrorMessage(writer: *std.Io.Writer, config: std.Io.tty.Config, msg_type: ErrorMessageType, comptime format: []const u8, args: anytype) !void {
90	switch (msg_type) {	89	switch (msg_type) {
91	.err => {	90	.err => {
92	try config.setColor(writer, .bold);	91	try config.setColor(writer, .bold);

lib/compiler/std-docs.zig+3-4

lib/fuzzer.zig+1-1

...	@@ -220,7 +220,7 @@ const Fuzzer = struct {	...	@@ -220,7 +220,7 @@ const Fuzzer = struct {
220	const i = f.corpus.items.len;	220	const i = f.corpus.items.len;
221	var buf: [30]u8 = undefined;	221	var buf: [30]u8 = undefined;
222	const input_sub_path = std.fmt.bufPrint(&buf, "{d}", .{i}) catch unreachable;	222	const input_sub_path = std.fmt.bufPrint(&buf, "{d}", .{i}) catch unreachable;
223	const input = f.corpus_directory.handle.readFileAlloc(gpa, input_sub_path, 1 << 31) catch \|err\| switch (err) {	223	const input = f.corpus_directory.handle.readFileAlloc(input_sub_path, gpa, .limited(1 << 31)) catch \|err\| switch (err) {
224	error.FileNotFound => {	224	error.FileNotFound => {
225	// Make this one the next input.	225	// Make this one the next input.
226	const input_file = f.corpus_directory.handle.createFile(input_sub_path, .{	226	const input_file = f.corpus_directory.handle.createFile(input_sub_path, .{

lib/std/Build.zig+5-5

...	@@ -1,6 +1,5 @@	...	@@ -1,6 +1,5 @@
1	const std = @import("std.zig");	1	const std = @import("std.zig");
2	const builtin = @import("builtin");	2	const builtin = @import("builtin");
3	const io = std.io;
4	const fs = std.fs;	3	const fs = std.fs;
5	const mem = std.mem;	4	const mem = std.mem;
6	const debug = std.debug;	5	const debug = std.debug;
...	@@ -1830,7 +1829,8 @@ pub fn runAllowFail(	...	@@ -1830,7 +1829,8 @@ pub fn runAllowFail(
1830	try Step.handleVerbose2(b, null, child.env_map, argv);	1829	try Step.handleVerbose2(b, null, child.env_map, argv);
1831	try child.spawn();	1830	try child.spawn();
1832		1831
1833	const stdout = child.stdout.?.deprecatedReader().readAllAlloc(b.allocator, max_output_size) catch {	1832	var stdout_reader = child.stdout.?.readerStreaming(&.{});
		1833	const stdout = stdout_reader.interface.allocRemaining(b.allocator, .limited(max_output_size)) catch {
1834	return error.ReadFailure;	1834	return error.ReadFailure;
1835	};	1835	};
1836	errdefer b.allocator.free(stdout);	1836	errdefer b.allocator.free(stdout);
...	@@ -2540,7 +2540,7 @@ fn dumpBadDirnameHelp(	...	@@ -2540,7 +2540,7 @@ fn dumpBadDirnameHelp(
2540		2540
2541	try w.print(msg, args);	2541	try w.print(msg, args);
2542		2542
2543	const tty_config = std.io.tty.detectConfig(.stderr());	2543	const tty_config = std.Io.tty.detectConfig(.stderr());
2544		2544
2545	if (fail_step) \|s\| {	2545	if (fail_step) \|s\| {
2546	tty_config.setColor(w, .red) catch {};	2546	tty_config.setColor(w, .red) catch {};
...	@@ -2566,8 +2566,8 @@ fn dumpBadDirnameHelp(	...	@@ -2566,8 +2566,8 @@ fn dumpBadDirnameHelp(
2566	/// In this function the stderr mutex has already been locked.	2566	/// In this function the stderr mutex has already been locked.
2567	pub fn dumpBadGetPathHelp(	2567	pub fn dumpBadGetPathHelp(
2568	s: *Step,	2568	s: *Step,
2569	w: *std.io.Writer,	2569	w: *std.Io.Writer,
2570	tty_config: std.io.tty.Config,	2570	tty_config: std.Io.tty.Config,
2571	src_builder: *Build,	2571	src_builder: *Build,
2572	asking_step: ?*Step,	2572	asking_step: ?*Step,
2573	) anyerror!void {	2573	) anyerror!void {

lib/std/Build/Cache.zig+3-3

lib/std/Build/Cache/Directory.zig+1-1

...	@@ -56,7 +56,7 @@ pub fn closeAndFree(self: *Directory, gpa: Allocator) void {	...	@@ -56,7 +56,7 @@ pub fn closeAndFree(self: *Directory, gpa: Allocator) void {
56	self.* = undefined;	56	self.* = undefined;
57	}	57	}
58		58
59	pub fn format(self: Directory, writer: *std.io.Writer) std.io.Writer.Error!void {	59	pub fn format(self: Directory, writer: *std.Io.Writer) std.Io.Writer.Error!void {
60	if (self.path) \|p\| {	60	if (self.path) \|p\| {
61	try writer.writeAll(p);	61	try writer.writeAll(p);
62	try writer.writeAll(fs.path.sep_str);	62	try writer.writeAll(fs.path.sep_str);

lib/std/Build/Cache/Path.zig+3-3

lib/std/Build/Fuzz.zig+2-2

...	@@ -127,7 +127,7 @@ pub fn deinit(fuzz: *Fuzz) void {	...	@@ -127,7 +127,7 @@ pub fn deinit(fuzz: *Fuzz) void {
127	gpa.free(fuzz.run_steps);	127	gpa.free(fuzz.run_steps);
128	}	128	}
129		129
130	fn rebuildTestsWorkerRun(run: *Step.Run, gpa: Allocator, ttyconf: std.io.tty.Config, parent_prog_node: std.Progress.Node) void {	130	fn rebuildTestsWorkerRun(run: *Step.Run, gpa: Allocator, ttyconf: std.Io.tty.Config, parent_prog_node: std.Progress.Node) void {
131	rebuildTestsWorkerRunFallible(run, gpa, ttyconf, parent_prog_node) catch \|err\| {	131	rebuildTestsWorkerRunFallible(run, gpa, ttyconf, parent_prog_node) catch \|err\| {
132	const compile = run.producer.?;	132	const compile = run.producer.?;
133	log.err("step '{s}': failed to rebuild in fuzz mode: {s}", .{	133	log.err("step '{s}': failed to rebuild in fuzz mode: {s}", .{
...	@@ -136,7 +136,7 @@ fn rebuildTestsWorkerRun(run: *Step.Run, gpa: Allocator, ttyconf: std.io.tty.Con	...	@@ -136,7 +136,7 @@ fn rebuildTestsWorkerRun(run: *Step.Run, gpa: Allocator, ttyconf: std.io.tty.Con
136	};	136	};
137	}	137	}
138		138
139	fn rebuildTestsWorkerRunFallible(run: *Step.Run, gpa: Allocator, ttyconf: std.io.tty.Config, parent_prog_node: std.Progress.Node) !void {	139	fn rebuildTestsWorkerRunFallible(run: *Step.Run, gpa: Allocator, ttyconf: std.Io.tty.Config, parent_prog_node: std.Progress.Node) !void {
140	const compile = run.producer.?;	140	const compile = run.producer.?;
141	const prog_node = parent_prog_node.start(compile.step.name, 0);	141	const prog_node = parent_prog_node.start(compile.step.name, 0);
142	defer prog_node.end();	142	defer prog_node.end();

lib/std/Build/Step/CheckFile.zig+1-1

...	@@ -53,7 +53,7 @@ fn make(step: *Step, options: Step.MakeOptions) !void {	...	@@ -53,7 +53,7 @@ fn make(step: *Step, options: Step.MakeOptions) !void {
53	try step.singleUnchangingWatchInput(check_file.source);	53	try step.singleUnchangingWatchInput(check_file.source);
54		54
55	const src_path = check_file.source.getPath2(b, step);	55	const src_path = check_file.source.getPath2(b, step);
56	const contents = fs.cwd().readFileAlloc(b.allocator, src_path, check_file.max_bytes) catch \|err\| {	56	const contents = fs.cwd().readFileAlloc(src_path, b.allocator, .limited(check_file.max_bytes)) catch \|err\| {
57	return step.fail("unable to read '{s}': {s}", .{	57	return step.fail("unable to read '{s}': {s}", .{
58	src_path, @errorName(err),	58	src_path, @errorName(err),
59	});	59	});

lib/std/Build/Step/CheckObject.zig+139-150

 @@ -6,7 +6,7 @@ const macho = std.macho;
 const math = std.math;
 const mem = std.mem;
 const testing = std.testing;
-const Writer = std.io.Writer;
+const Writer = std.Io.Writer;
 const CheckObject = @This();
 @@ -553,14 +553,13 @@ fn make(step: *Step, make_options: Step.MakeOptions) !void {
     const src_path = check_object.source.getPath3(b, step);
     const contents = src_path.root_dir.handle.readFileAllocOptions(
-        gpa,
         src_path.sub_path,
-        check_object.max_bytes,
+        gpa,
-        null,
+        .limited(check_object.max_bytes),
         .of(u64),
         null,
-    ) catch |err| return step.fail("unable to read '{f}': {s}", .{
+    ) catch |err| return step.fail("unable to read '{f}': {t}", .{
-        std.fmt.alt(src_path, .formatEscapeChar), @errorName(err),
+        std.fmt.alt(src_path, .formatEscapeChar), err,
     });
     var vars: std.StringHashMap(u64) = .init(gpa);
 @@ -1462,7 +1461,7 @@ const MachODumper = struct {
         const TrieIterator = struct {
             stream: std.Io.Reader,
-            fn readUleb128(it: *TrieIterator) !u64 {
+            fn takeLeb128(it: *TrieIterator) !u64 {
                 return it.stream.takeLeb128(u64);
             }
 @@ -1470,7 +1469,7 @@ const MachODumper = struct {
                 return it.stream.takeSentinel(0);
             }
-            fn readByte(it: *TrieIterator) !u8 {
+            fn takeByte(it: *TrieIterator) !u8 {
                 return it.stream.takeByte();
             }
         };
 @@ -1518,12 +1517,12 @@ const MachODumper = struct {
             prefix: []const u8,
             exports: *std.array_list.Managed(Export),
         ) !void {
-            const size = try it.readUleb128();
+            const size = try it.takeLeb128();
             if (size > 0) {
-                const flags = try it.readUleb128();
+                const flags = try it.takeLeb128();
                 switch (flags) {
                     macho.EXPORT_SYMBOL_FLAGS_REEXPORT => {
-                        const ord = try it.readUleb128();
+                        const ord = try it.takeLeb128();
                         const name = try arena.dupe(u8, try it.readString());
                         try exports.append(.{
                             .name = if (name.len > 0) name else prefix,
 @@ -1532,8 +1531,8 @@ const MachODumper = struct {
                         });
                     },
                     macho.EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER => {
-                        const stub_offset = try it.readUleb128();
+                        const stub_offset = try it.takeLeb128();
-                        const resolver_offset = try it.readUleb128();
+                        const resolver_offset = try it.takeLeb128();
                         try exports.append(.{
                             .name = prefix,
                             .tag = .stub_resolver,
 @@ -1544,7 +1543,7 @@ const MachODumper = struct {
                         });
                     },
                     else => {
-                        const vmoff = try it.readUleb128();
+                        const vmoff = try it.takeLeb128();
                         try exports.append(.{
                             .name = prefix,
                             .tag = .@"export",
 @@ -1563,10 +1562,10 @@ const MachODumper = struct {
                 }
             }
-            const nedges = try it.readByte();
+            const nedges = try it.takeByte();
             for (0..nedges) |_| {
                 const label = try it.readString();
-                const off = try it.readUleb128();
+                const off = try it.takeLeb128();
                 const prefix_label = try std.fmt.allocPrint(arena, "{s}{s}", .{ prefix, label });
                 const curr = it.stream.seek;
                 it.stream.seek = off;
 @@ -1701,11 +1700,10 @@ const ElfDumper = struct {
     fn parseAndDumpArchive(step: *Step, check: Check, bytes: []const u8) ![]const u8 {
         const gpa = step.owner.allocator;
-        var stream = std.io.fixedBufferStream(bytes);
+        var reader: std.Io.Reader = .fixed(bytes);
-        const reader = stream.reader();
-        const magic = try reader.readBytesNoEof(elf.ARMAG.len);
+        const magic = try reader.takeArray(elf.ARMAG.len);
-        if (!mem.eql(u8, &magic, elf.ARMAG)) {
+        if (!mem.eql(u8, magic, elf.ARMAG)) {
             return error.InvalidArchiveMagicNumber;
         }
 @@ -1722,28 +1720,26 @@ const ElfDumper = struct {
         }
         while (true) {
-            if (stream.pos >= ctx.data.len) break;
+            if (reader.seek >= ctx.data.len) break;
-            if (!mem.isAligned(stream.pos, 2)) stream.pos += 1;
+            if (!mem.isAligned(reader.seek, 2)) reader.seek += 1;
-            const hdr = try reader.readStruct(elf.ar_hdr);
+            const hdr = try reader.takeStruct(elf.ar_hdr, .little);
             if (!mem.eql(u8, &hdr.ar_fmag, elf.ARFMAG)) return error.InvalidArchiveHeaderMagicNumber;
             const size = try hdr.size();
-            defer {
+            defer reader.seek += size;
-                _ = stream.seekBy(size) catch {};
-            }
             if (hdr.isSymtab()) {
-                try ctx.parseSymtab(ctx.data[stream.pos..][0..size], .p32);
+                try ctx.parseSymtab(ctx.data[reader.seek..][0..size], .p32);
                 continue;
             }
             if (hdr.isSymtab64()) {
-                try ctx.parseSymtab(ctx.data[stream.pos..][0..size], .p64);
+                try ctx.parseSymtab(ctx.data[reader.seek..][0..size], .p64);
                 continue;
             }
             if (hdr.isStrtab()) {
-                ctx.strtab = ctx.data[stream.pos..][0..size];
+                ctx.strtab = ctx.data[reader.seek..][0..size];
                 continue;
             }
             if (hdr.isSymdef() or hdr.isSymdefSorted()) continue;
 @@ -1755,7 +1751,7 @@ const ElfDumper = struct {
             else
                 unreachable;
-            try ctx.objects.append(gpa, .{ .name = name, .off = stream.pos, .len = size });
+            try ctx.objects.append(gpa, .{ .name = name, .off = reader.seek, .len = size });
         }
         var output: std.Io.Writer.Allocating = .init(gpa);
 @@ -1783,11 +1779,10 @@ const ElfDumper = struct {
         objects: std.ArrayListUnmanaged(struct { name: []const u8, off: usize, len: usize }) = .empty,
         fn parseSymtab(ctx: *ArchiveContext, raw: []const u8, ptr_width: enum { p32, p64 }) !void {
-            var stream = std.io.fixedBufferStream(raw);
+            var reader: std.Io.Reader = .fixed(raw);
-            const reader = stream.reader();
             const num = switch (ptr_width) {
-                .p32 => try reader.readInt(u32, .big),
+                .p32 => try reader.takeInt(u32, .big),
-                .p64 => try reader.readInt(u64, .big),
+                .p64 => try reader.takeInt(u64, .big),
             };
             const ptr_size: usize = switch (ptr_width) {
                 .p32 => @sizeOf(u32),
 @@ -1802,8 +1797,8 @@ const ElfDumper = struct {
             var stroff: usize = 0;
             for (0..num) |_| {
                 const off = switch (ptr_width) {
-                    .p32 => try reader.readInt(u32, .big),
+                    .p32 => try reader.takeInt(u32, .big),
-                    .p64 => try reader.readInt(u64, .big),
+                    .p64 => try reader.takeInt(u64, .big),
                 };
                 const name = mem.sliceTo(@as([*:0]const u8, @ptrCast(strtab.ptr + stroff)), 0);
                 stroff += name.len + 1;
 @@ -1868,10 +1863,9 @@ const ElfDumper = struct {
     fn parseAndDumpObject(step: *Step, check: Check, bytes: []const u8) ![]const u8 {
         const gpa = step.owner.allocator;
-        var stream = std.io.fixedBufferStream(bytes);
+        var reader: std.Io.Reader = .fixed(bytes);
-        const reader = stream.reader();
-        const hdr = try reader.readStruct(elf.Elf64_Ehdr);
+        const hdr = try reader.takeStruct(elf.Elf64_Ehdr, .little);
         if (!mem.eql(u8, hdr.e_ident[0..4], "\x7fELF")) {
             return error.InvalidMagicNumber;
         }
 @@ -2360,10 +2354,9 @@ const WasmDumper = struct {
     fn parseAndDump(step: *Step, check: Check, bytes: []const u8) ![]const u8 {
         const gpa = step.owner.allocator;
-        var fbs = std.io.fixedBufferStream(bytes);
+        var reader: std.Io.Reader = .fixed(bytes);
-        const reader = fbs.reader();
-        const buf = try reader.readBytesNoEof(8);
+        const buf = try reader.takeArray(8);
         if (!mem.eql(u8, buf[0..4], &std.wasm.magic)) {
             return error.InvalidMagicByte;
         }
 @@ -2373,7 +2366,7 @@ const WasmDumper = struct {
         var output: std.Io.Writer.Allocating = .init(gpa);
         defer output.deinit();
-        parseAndDumpInner(step, check, bytes, &fbs, &output.writer) catch |err| switch (err) {
+        parseAndDumpInner(step, check, bytes, &reader, &output.writer) catch |err| switch (err) {
             error.EndOfStream => try output.writer.writeAll("\n<UnexpectedEndOfStream>"),
             else => |e| return e,
         };
 @@ -2384,21 +2377,19 @@ const WasmDumper = struct {
         step: *Step,
         check: Check,
         bytes: []const u8,
-        fbs: *std.io.FixedBufferStream([]const u8),
+        reader: *std.Io.Reader,
         writer: *std.Io.Writer,
     ) !void {
-        const reader = fbs.reader();
         switch (check.kind) {
             .headers => {
-                while (reader.readByte()) |current_byte| {
+                while (reader.takeByte()) |current_byte| {
                     const section = std.enums.fromInt(std.wasm.Section, current_byte) orelse {
                         return step.fail("Found invalid section id '{d}'", .{current_byte});
                     };
-                    const section_length = try std.leb.readUleb128(u32, reader);
+                    const section_length = try reader.takeLeb128(u32);
-                    try parseAndDumpSection(step, section, bytes[fbs.pos..][0..section_length], writer);
+                    try parseAndDumpSection(step, section, bytes[reader.seek..][0..section_length], writer);
-                    fbs.pos += section_length;
+                    reader.seek += section_length;
                 } else |_| {} // reached end of stream
             },
 @@ -2410,10 +2401,9 @@ const WasmDumper = struct {
         step: *Step,
         section: std.wasm.Section,
         data: []const u8,
-        writer: anytype,
+        writer: *std.Io.Writer,
     ) !void {
-        var fbs = std.io.fixedBufferStream(data);
+        var reader: std.Io.Reader = .fixed(data);
-        const reader = fbs.reader();
         try writer.print(
             \\Section {s}
 @@ -2432,31 +2422,31 @@ const WasmDumper = struct {
             .code,
             .data,
             => {
-                const entries = try std.leb.readUleb128(u32, reader);
+                const entries = try reader.takeLeb128(u32);
                 try writer.print("\nentries {d}\n", .{entries});
-                try parseSection(step, section, data[fbs.pos..], entries, writer);
+                try parseSection(step, section, data[reader.seek..], entries, writer);
             },
             .custom => {
-                const name_length = try std.leb.readUleb128(u32, reader);
+                const name_length = try reader.takeLeb128(u32);
-                const name = data[fbs.pos..][0..name_length];
+                const name = data[reader.seek..][0..name_length];
-                fbs.pos += name_length;
+                reader.seek += name_length;
                 try writer.print("\nname {s}\n", .{name});
                 if (mem.eql(u8, name, "name")) {
-                    try parseDumpNames(step, reader, writer, data);
+                    try parseDumpNames(step, &reader, writer, data);
                 } else if (mem.eql(u8, name, "producers")) {
-                    try parseDumpProducers(reader, writer, data);
+                    try parseDumpProducers(&reader, writer, data);
                 } else if (mem.eql(u8, name, "target_features")) {
-                    try parseDumpFeatures(reader, writer, data);
+                    try parseDumpFeatures(&reader, writer, data);
                 }
                 // TODO: Implement parsing and dumping other custom sections (such as relocations)
             },
             .start => {
-                const start = try std.leb.readUleb128(u32, reader);
+                const start = try reader.takeLeb128(u32);
                 try writer.print("\nstart {d}\n", .{start});
             },
             .data_count => {
-                const count = try std.leb.readUleb128(u32, reader);
+                const count = try reader.takeLeb128(u32);
                 try writer.print("\ncount {d}\n", .{count});
             },
             else => {}, // skip unknown sections
 @@ -2464,41 +2454,40 @@ const WasmDumper = struct {
     }
     fn parseSection(step: *Step, section: std.wasm.Section, data: []const u8, entries: u32, writer: anytype) !void {
-        var fbs = std.io.fixedBufferStream(data);
+        var reader: std.Io.Reader = .fixed(data);
-        const reader = fbs.reader();
         switch (section) {
             .type => {
                 var i: u32 = 0;
                 while (i < entries) : (i += 1) {
-                    const func_type = try reader.readByte();
+                    const func_type = try reader.takeByte();
                     if (func_type != std.wasm.function_type) {
                         return step.fail("expected function type, found byte '{d}'", .{func_type});
                     }
-                    const params = try std.leb.readUleb128(u32, reader);
+                    const params = try reader.takeLeb128(u32);
                     try writer.print("params {d}\n", .{params});
                     var index: u32 = 0;
                     while (index < params) : (index += 1) {
-                        _ = try parseDumpType(step, std.wasm.Valtype, reader, writer);
+                        _ = try parseDumpType(step, std.wasm.Valtype, &reader, writer);
                     } else index = 0;
-                    const returns = try std.leb.readUleb128(u32, reader);
+                    const returns = try reader.takeLeb128(u32);
                     try writer.print("returns {d}\n", .{returns});
                     while (index < returns) : (index += 1) {
-                        _ = try parseDumpType(step, std.wasm.Valtype, reader, writer);
+                        _ = try parseDumpType(step, std.wasm.Valtype, &reader, writer);
                     }
                 }
             },
             .import => {
                 var i: u32 = 0;
                 while (i < entries) : (i += 1) {
-                    const module_name_len = try std.leb.readUleb128(u32, reader);
+                    const module_name_len = try reader.takeLeb128(u32);
-                    const module_name = data[fbs.pos..][0..module_name_len];
+                    const module_name = data[reader.seek..][0..module_name_len];
-                    fbs.pos += module_name_len;
+                    reader.seek += module_name_len;
-                    const name_len = try std.leb.readUleb128(u32, reader);
+                    const name_len = try reader.takeLeb128(u32);
-                    const name = data[fbs.pos..][0..name_len];
+                    const name = data[reader.seek..][0..name_len];
-                    fbs.pos += name_len;
+                    reader.seek += name_len;
-                    const kind = std.enums.fromInt(std.wasm.ExternalKind, try reader.readByte()) orelse {
+                    const kind = std.enums.fromInt(std.wasm.ExternalKind, try reader.takeByte()) orelse {
                         return step.fail("invalid import kind", .{});
                     };
 @@ -2510,18 +2499,18 @@ const WasmDumper = struct {
                     try writer.writeByte('\n');
                     switch (kind) {
                         .function => {
-                            try writer.print("index {d}\n", .{try std.leb.readUleb128(u32, reader)});
+                            try writer.print("index {d}\n", .{try reader.takeLeb128(u32)});
                         },
                         .memory => {
-                            try parseDumpLimits(reader, writer);
+                            try parseDumpLimits(&reader, writer);
                         },
                         .global => {
-                            _ = try parseDumpType(step, std.wasm.Valtype, reader, writer);
+                            _ = try parseDumpType(step, std.wasm.Valtype, &reader, writer);
-                            try writer.print("mutable {}\n", .{0x01 == try std.leb.readUleb128(u32, reader)});
+                            try writer.print("mutable {}\n", .{0x01 == try reader.takeLeb128(u32)});
                         },
                         .table => {
-                            _ = try parseDumpType(step, std.wasm.RefType, reader, writer);
+                            _ = try parseDumpType(step, std.wasm.RefType, &reader, writer);
-                            try parseDumpLimits(reader, writer);
+                            try parseDumpLimits(&reader, writer);
                         },
                     }
                 }
 @@ -2529,41 +2518,41 @@ const WasmDumper = struct {
             .function => {
                 var i: u32 = 0;
                 while (i < entries) : (i += 1) {
-                    try writer.print("index {d}\n", .{try std.leb.readUleb128(u32, reader)});
+                    try writer.print("index {d}\n", .{try reader.takeLeb128(u32)});
                 }
             },
             .table => {
                 var i: u32 = 0;
                 while (i < entries) : (i += 1) {
-                    _ = try parseDumpType(step, std.wasm.RefType, reader, writer);
+                    _ = try parseDumpType(step, std.wasm.RefType, &reader, writer);
-                    try parseDumpLimits(reader, writer);
+                    try parseDumpLimits(&reader, writer);
                 }
             },
             .memory => {
                 var i: u32 = 0;
                 while (i < entries) : (i += 1) {
-                    try parseDumpLimits(reader, writer);
+                    try parseDumpLimits(&reader, writer);
                 }
             },
             .global => {
                 var i: u32 = 0;
                 while (i < entries) : (i += 1) {
-                    _ = try parseDumpType(step, std.wasm.Valtype, reader, writer);
+                    _ = try parseDumpType(step, std.wasm.Valtype, &reader, writer);
-                    try writer.print("mutable {}\n", .{0x01 == try std.leb.readUleb128(u1, reader)});
+                    try writer.print("mutable {}\n", .{0x01 == try reader.takeLeb128(u1)});
-                    try parseDumpInit(step, reader, writer);
+                    try parseDumpInit(step, &reader, writer);
                 }
             },
             .@"export" => {
                 var i: u32 = 0;
                 while (i < entries) : (i += 1) {
-                    const name_len = try std.leb.readUleb128(u32, reader);
+                    const name_len = try reader.takeLeb128(u32);
-                    const name = data[fbs.pos..][0..name_len];
+                    const name = data[reader.seek..][0..name_len];
-                    fbs.pos += name_len;
+                    reader.seek += name_len;
-                    const kind_byte = try std.leb.readUleb128(u8, reader);
+                    const kind_byte = try reader.takeLeb128(u8);
                     const kind = std.enums.fromInt(std.wasm.ExternalKind, kind_byte) orelse {
                         return step.fail("invalid export kind value '{d}'", .{kind_byte});
                     };
-                    const index = try std.leb.readUleb128(u32, reader);
+                    const index = try reader.takeLeb128(u32);
                     try writer.print(
                         \\name {s}
                         \\kind {s}
 @@ -2575,14 +2564,14 @@ const WasmDumper = struct {
             .element => {
                 var i: u32 = 0;
                 while (i < entries) : (i += 1) {
-                    try writer.print("table index {d}\n", .{try std.leb.readUleb128(u32, reader)});
+                    try writer.print("table index {d}\n", .{try reader.takeLeb128(u32)});
-                    try parseDumpInit(step, reader, writer);
+                    try parseDumpInit(step, &reader, writer);
-                    const function_indexes = try std.leb.readUleb128(u32, reader);
+                    const function_indexes = try reader.takeLeb128(u32);
                     var function_index: u32 = 0;
                     try writer.print("indexes {d}\n", .{function_indexes});
                     while (function_index < function_indexes) : (function_index += 1) {
-                        try writer.print("index {d}\n", .{try std.leb.readUleb128(u32, reader)});
+                        try writer.print("index {d}\n", .{try reader.takeLeb128(u32)});
                     }
                 }
             },
 @@ -2590,27 +2579,27 @@ const WasmDumper = struct {
             .data => {
                 var i: u32 = 0;
                 while (i < entries) : (i += 1) {
-                    const flags = try std.leb.readUleb128(u32, reader);
+                    const flags = try reader.takeLeb128(u32);
                     const index = if (flags & 0x02 != 0)
-                        try std.leb.readUleb128(u32, reader)
+                        try reader.takeLeb128(u32)
                     else
                         0;
                     try writer.print("memory index 0x{x}\n", .{index});
                     if (flags == 0) {
-                        try parseDumpInit(step, reader, writer);
+                        try parseDumpInit(step, &reader, writer);
                     }
-                    const size = try std.leb.readUleb128(u32, reader);
+                    const size = try reader.takeLeb128(u32);
                     try writer.print("size {d}\n", .{size});
-                    try reader.skipBytes(size, .{}); // we do not care about the content of the segments
+                    try reader.discardAll(size); // we do not care about the content of the segments
                 }
             },
             else => unreachable,
         }
     }
-    fn parseDumpType(step: *Step, comptime E: type, reader: anytype, writer: anytype) !E {
+    fn parseDumpType(step: *Step, comptime E: type, reader: *std.Io.Reader, writer: *std.Io.Writer) !E {
-        const byte = try reader.readByte();
+        const byte = try reader.takeByte();
         const tag = std.enums.fromInt(E, byte) orelse {
             return step.fail("invalid wasm type value '{d}'", .{byte});
         };
 @@ -2619,65 +2608,65 @@ const WasmDumper = struct {
     }
     fn parseDumpLimits(reader: anytype, writer: anytype) !void {
-        const flags = try std.leb.readUleb128(u8, reader);
+        const flags = try reader.takeLeb128(u8);
-        const min = try std.leb.readUleb128(u32, reader);
+        const min = try reader.takeLeb128(u32);
         try writer.print("min {x}\n", .{min});
         if (flags != 0) {
-            try writer.print("max {x}\n", .{try std.leb.readUleb128(u32, reader)});
+            try writer.print("max {x}\n", .{try reader.takeLeb128(u32)});
         }
     }
-    fn parseDumpInit(step: *Step, reader: anytype, writer: anytype) !void {
+    fn parseDumpInit(step: *Step, reader: *std.Io.Reader, writer: *std.Io.Writer) !void {
-        const byte = try reader.readByte();
+        const byte = try reader.takeByte();
         const opcode = std.enums.fromInt(std.wasm.Opcode, byte) orelse {
             return step.fail("invalid wasm opcode '{d}'", .{byte});
         };
         switch (opcode) {
-            .i32_const => try writer.print("i32.const {x}\n", .{try std.leb.readIleb128(i32, reader)}),
+            .i32_const => try writer.print("i32.const {x}\n", .{try reader.takeLeb128(i32)}),
-            .i64_const => try writer.print("i64.const {x}\n", .{try std.leb.readIleb128(i64, reader)}),
+            .i64_const => try writer.print("i64.const {x}\n", .{try reader.takeLeb128(i64)}),
-            .f32_const => try writer.print("f32.const {x}\n", .{@as(f32, @bitCast(try reader.readInt(u32, .little)))}),
+            .f32_const => try writer.print("f32.const {x}\n", .{@as(f32, @bitCast(try reader.takeInt(u32, .little)))}),
-            .f64_const => try writer.print("f64.const {x}\n", .{@as(f64, @bitCast(try reader.readInt(u64, .little)))}),
+            .f64_const => try writer.print("f64.const {x}\n", .{@as(f64, @bitCast(try reader.takeInt(u64, .little)))}),
-            .global_get => try writer.print("global.get {x}\n", .{try std.leb.readUleb128(u32, reader)}),
+            .global_get => try writer.print("global.get {x}\n", .{try reader.takeLeb128(u32)}),
             else => unreachable,
         }
-        const end_opcode = try std.leb.readUleb128(u8, reader);
+        const end_opcode = try reader.takeLeb128(u8);
         if (end_opcode != @intFromEnum(std.wasm.Opcode.end)) {
             return step.fail("expected 'end' opcode in init expression", .{});
         }
     }
     /// https://webassembly.github.io/spec/core/appendix/custom.html
-    fn parseDumpNames(step: *Step, reader: anytype, writer: anytype, data: []const u8) !void {
+    fn parseDumpNames(step: *Step, reader: *std.Io.Reader, writer: *std.Io.Writer, data: []const u8) !void {
-        while (reader.context.pos < data.len) {
+        while (reader.seek < data.len) {
             switch (try parseDumpType(step, std.wasm.NameSubsection, reader, writer)) {
                 // The module name subsection ... consists of a single name
                 // that is assigned to the module itself.
                 .module => {
-                    const size = try std.leb.readUleb128(u32, reader);
+                    const size = try reader.takeLeb128(u32);
-                    const name_len = try std.leb.readUleb128(u32, reader);
+                    const name_len = try reader.takeLeb128(u32);
                     if (size != name_len + 1) return error.BadSubsectionSize;
-                    if (reader.context.pos + name_len > data.len) return error.UnexpectedEndOfStream;
+                    if (reader.seek + name_len > data.len) return error.UnexpectedEndOfStream;
-                    try writer.print("name {s}\n", .{data[reader.context.pos..][0..name_len]});
+                    try writer.print("name {s}\n", .{data[reader.seek..][0..name_len]});
-                    reader.context.pos += name_len;
+                    reader.seek += name_len;
                 },
                 // The function name subsection ... consists of a name map
                 // assigning function names to function indices.
                 .function, .global, .data_segment => {
-                    const size = try std.leb.readUleb128(u32, reader);
+                    const size = try reader.takeLeb128(u32);
-                    const entries = try std.leb.readUleb128(u32, reader);
+                    const entries = try reader.takeLeb128(u32);
                     try writer.print(
                         \\size {d}
                         \\names {d}
                         \\
                     , .{ size, entries });
                     for (0..entries) |_| {
-                        const index = try std.leb.readUleb128(u32, reader);
+                        const index = try reader.takeLeb128(u32);
-                        const name_len = try std.leb.readUleb128(u32, reader);
+                        const name_len = try reader.takeLeb128(u32);
-                        if (reader.context.pos + name_len > data.len) return error.UnexpectedEndOfStream;
+                        if (reader.seek + name_len > data.len) return error.UnexpectedEndOfStream;
-                        const name = data[reader.context.pos..][0..name_len];
+                        const name = data[reader.seek..][0..name_len];
-                        reader.context.pos += name.len;
+                        reader.seek += name.len;
                         try writer.print(
                             \\index {d}
 @@ -2699,16 +2688,16 @@ const WasmDumper = struct {
         }
     }
-    fn parseDumpProducers(reader: anytype, writer: anytype, data: []const u8) !void {
+    fn parseDumpProducers(reader: *std.Io.Reader, writer: *std.Io.Writer, data: []const u8) !void {
-        const field_count = try std.leb.readUleb128(u32, reader);
+        const field_count = try reader.takeLeb128(u32);
         try writer.print("fields {d}\n", .{field_count});
         var current_field: u32 = 0;
         while (current_field < field_count) : (current_field += 1) {
-            const field_name_length = try std.leb.readUleb128(u32, reader);
+            const field_name_length = try reader.takeLeb128(u32);
-            const field_name = data[reader.context.pos..][0..field_name_length];
+            const field_name = data[reader.seek..][0..field_name_length];
-            reader.context.pos += field_name_length;
+            reader.seek += field_name_length;
-            const value_count = try std.leb.readUleb128(u32, reader);
+            const value_count = try reader.takeLeb128(u32);
             try writer.print(
                 \\field_name {s}
                 \\values {d}
 @@ -2716,13 +2705,13 @@ const WasmDumper = struct {
             try writer.writeByte('\n');
             var current_value: u32 = 0;
             while (current_value < value_count) : (current_value += 1) {
-                const value_length = try std.leb.readUleb128(u32, reader);
+                const value_length = try reader.takeLeb128(u32);
-                const value = data[reader.context.pos..][0..value_length];
+                const value = data[reader.seek..][0..value_length];
-                reader.context.pos += value_length;
+                reader.seek += value_length;
-                const version_length = try std.leb.readUleb128(u32, reader);
+                const version_length = try reader.takeLeb128(u32);
-                const version = data[reader.context.pos..][0..version_length];
+                const version = data[reader.seek..][0..version_length];
-                reader.context.pos += version_length;
+                reader.seek += version_length;
                 try writer.print(
                     \\value_name {s}
 @@ -2733,16 +2722,16 @@ const WasmDumper = struct {
         }
     }
-    fn parseDumpFeatures(reader: anytype, writer: anytype, data: []const u8) !void {
+    fn parseDumpFeatures(reader: *std.Io.Reader, writer: *std.Io.Writer, data: []const u8) !void {
-        const feature_count = try std.leb.readUleb128(u32, reader);
+        const feature_count = try reader.takeLeb128(u32);
         try writer.print("features {d}\n", .{feature_count});
         var index: u32 = 0;
         while (index < feature_count) : (index += 1) {
-            const prefix_byte = try std.leb.readUleb128(u8, reader);
+            const prefix_byte = try reader.takeLeb128(u8);
-            const name_length = try std.leb.readUleb128(u32, reader);
+            const name_length = try reader.takeLeb128(u32);
-            const feature_name = data[reader.context.pos..][0..name_length];
+            const feature_name = data[reader.seek..][0..name_length];
-            reader.context.pos += name_length;
+            reader.seek += name_length;
             try writer.print("{c} {s}\n", .{ prefix_byte, feature_name });
         }

lib/std/Build/Step/Compile.zig+1-1

...	@@ -2021,7 +2021,7 @@ fn checkCompileErrors(compile: *Compile) !void {	...	@@ -2021,7 +2021,7 @@ fn checkCompileErrors(compile: *Compile) !void {
2021	const arena = compile.step.owner.allocator;	2021	const arena = compile.step.owner.allocator;
2022		2022
2023	const actual_errors = ae: {	2023	const actual_errors = ae: {
2024	var aw: std.io.Writer.Allocating = .init(arena);	2024	var aw: std.Io.Writer.Allocating = .init(arena);
2025	defer aw.deinit();	2025	defer aw.deinit();
2026	try actual_eb.renderToWriter(.{	2026	try actual_eb.renderToWriter(.{
2027	.ttyconf = .no_color,	2027	.ttyconf = .no_color,

lib/std/Build/Step/ConfigHeader.zig+6-6

...	@@ -2,7 +2,7 @@ const std = @import("std");	...	@@ -2,7 +2,7 @@ const std = @import("std");
2	const ConfigHeader = @This();	2	const ConfigHeader = @This();
3	const Step = std.Build.Step;	3	const Step = std.Build.Step;
4	const Allocator = std.mem.Allocator;	4	const Allocator = std.mem.Allocator;
5	const Writer = std.io.Writer;	5	const Writer = std.Io.Writer;
6		6
7	pub const Style = union(enum) {	7	pub const Style = union(enum) {
8	/// A configure format supported by autotools that uses `#undef foo` to	8	/// A configure format supported by autotools that uses `#undef foo` to
...	@@ -196,7 +196,7 @@ fn make(step: *Step, options: Step.MakeOptions) !void {	...	@@ -196,7 +196,7 @@ fn make(step: *Step, options: Step.MakeOptions) !void {
196	man.hash.addBytes(config_header.include_path);	196	man.hash.addBytes(config_header.include_path);
197	man.hash.addOptionalBytes(config_header.include_guard_override);	197	man.hash.addOptionalBytes(config_header.include_guard_override);
198		198
199	var aw: std.io.Writer.Allocating = .init(gpa);	199	var aw: Writer.Allocating = .init(gpa);
200	defer aw.deinit();	200	defer aw.deinit();
201	const bw = &aw.writer;	201	const bw = &aw.writer;
202		202
...	@@ -208,7 +208,7 @@ fn make(step: *Step, options: Step.MakeOptions) !void {	...	@@ -208,7 +208,7 @@ fn make(step: *Step, options: Step.MakeOptions) !void {
208	.autoconf_undef, .autoconf_at => \|file_source\| {	208	.autoconf_undef, .autoconf_at => \|file_source\| {
209	try bw.writeAll(c_generated_line);	209	try bw.writeAll(c_generated_line);
210	const src_path = file_source.getPath2(b, step);	210	const src_path = file_source.getPath2(b, step);
211	const contents = std.fs.cwd().readFileAlloc(arena, src_path, config_header.max_bytes) catch \|err\| {	211	const contents = std.fs.cwd().readFileAlloc(src_path, arena, .limited(config_header.max_bytes)) catch \|err\| {
212	return step.fail("unable to read autoconf input file '{s}': {s}", .{	212	return step.fail("unable to read autoconf input file '{s}': {s}", .{
213	src_path, @errorName(err),	213	src_path, @errorName(err),
214	});	214	});
...	@@ -222,7 +222,7 @@ fn make(step: *Step, options: Step.MakeOptions) !void {	...	@@ -222,7 +222,7 @@ fn make(step: *Step, options: Step.MakeOptions) !void {
222	.cmake => \|file_source\| {	222	.cmake => \|file_source\| {
223	try bw.writeAll(c_generated_line);	223	try bw.writeAll(c_generated_line);
224	const src_path = file_source.getPath2(b, step);	224	const src_path = file_source.getPath2(b, step);
225	const contents = std.fs.cwd().readFileAlloc(arena, src_path, config_header.max_bytes) catch \|err\| {	225	const contents = std.fs.cwd().readFileAlloc(src_path, arena, .limited(config_header.max_bytes)) catch \|err\| {
226	return step.fail("unable to read cmake input file '{s}': {s}", .{	226	return step.fail("unable to read cmake input file '{s}': {s}", .{
227	src_path, @errorName(err),	227	src_path, @errorName(err),
228	});	228	});
...	@@ -329,7 +329,7 @@ fn render_autoconf_undef(	...	@@ -329,7 +329,7 @@ fn render_autoconf_undef(
329	fn render_autoconf_at(	329	fn render_autoconf_at(
330	step: *Step,	330	step: *Step,
331	contents: []const u8,	331	contents: []const u8,
332	aw: *std.io.Writer.Allocating,	332	aw: *Writer.Allocating,
333	values: std.StringArrayHashMap(Value),	333	values: std.StringArrayHashMap(Value),
334	src_path: []const u8,	334	src_path: []const u8,
335	) !void {	335	) !void {
...	@@ -753,7 +753,7 @@ fn testReplaceVariablesAutoconfAt(	...	@@ -753,7 +753,7 @@ fn testReplaceVariablesAutoconfAt(
753	expected: []const u8,	753	expected: []const u8,
754	values: std.StringArrayHashMap(Value),	754	values: std.StringArrayHashMap(Value),
755	) !void {	755	) !void {
756	var aw: std.io.Writer.Allocating = .init(allocator);	756	var aw: Writer.Allocating = .init(allocator);
757	defer aw.deinit();	757	defer aw.deinit();
758		758
759	const used = try allocator.alloc(bool, values.count());	759	const used = try allocator.alloc(bool, values.count());

lib/std/Build/Step/ObjCopy.zig-1

...	@@ -9,7 +9,6 @@ const InstallDir = std.Build.InstallDir;	...	@@ -9,7 +9,6 @@ const InstallDir = std.Build.InstallDir;
9	const Step = std.Build.Step;	9	const Step = std.Build.Step;
10	const elf = std.elf;	10	const elf = std.elf;
11	const fs = std.fs;	11	const fs = std.fs;
12	const io = std.io;
13	const sort = std.sort;	12	const sort = std.sort;
14		13
15	pub const base_id: Step.Id = .objcopy;	14	pub const base_id: Step.Id = .objcopy;

lib/std/Build/WebServer.zig+4-4

lib/std/Io.zig-197

...	@@ -82,202 +82,6 @@ pub const Limit = enum(usize) {	...	@@ -82,202 +82,6 @@ pub const Limit = enum(usize) {
82	pub const Reader = @import("Io/Reader.zig");	82	pub const Reader = @import("Io/Reader.zig");
83	pub const Writer = @import("Io/Writer.zig");	83	pub const Writer = @import("Io/Writer.zig");
84		84
85	/// Deprecated in favor of `Reader`.
86	pub fn GenericReader(
87	comptime Context: type,
88	comptime ReadError: type,
89	/// Returns the number of bytes read. It may be less than buffer.len.
90	/// If the number of bytes read is 0, it means end of stream.
91	/// End of stream is not an error condition.
92	comptime readFn: fn (context: Context, buffer: []u8) ReadError!usize,
93	) type {
94	return struct {
95	context: Context,
96
97	pub const Error = ReadError;
98	pub const NoEofError = ReadError \|\| error{
99	EndOfStream,
100	};
101
102	pub inline fn read(self: Self, buffer: []u8) Error!usize {
103	return readFn(self.context, buffer);
104	}
105
106	pub inline fn readAll(self: Self, buffer: []u8) Error!usize {
107	return @errorCast(self.any().readAll(buffer));
108	}
109
110	pub inline fn readAtLeast(self: Self, buffer: []u8, len: usize) Error!usize {
111	return @errorCast(self.any().readAtLeast(buffer, len));
112	}
113
114	pub inline fn readNoEof(self: Self, buf: []u8) NoEofError!void {
115	return @errorCast(self.any().readNoEof(buf));
116	}
117
118	pub inline fn readAllArrayList(
119	self: Self,
120	array_list: *std.array_list.Managed(u8),
121	max_append_size: usize,
122	) (error{StreamTooLong} \|\| Allocator.Error \|\| Error)!void {
123	return @errorCast(self.any().readAllArrayList(array_list, max_append_size));
124	}
125
126	pub inline fn readAllArrayListAligned(
127	self: Self,
128	comptime alignment: ?Alignment,
129	array_list: *std.array_list.AlignedManaged(u8, alignment),
130	max_append_size: usize,
131	) (error{StreamTooLong} \|\| Allocator.Error \|\| Error)!void {
132	return @errorCast(self.any().readAllArrayListAligned(
133	alignment,
134	array_list,
135	max_append_size,
136	));
137	}
138
139	pub inline fn readAllAlloc(
140	self: Self,
141	allocator: Allocator,
142	max_size: usize,
143	) (Error \|\| Allocator.Error \|\| error{StreamTooLong})![]u8 {
144	return @errorCast(self.any().readAllAlloc(allocator, max_size));
145	}
146
147	pub inline fn streamUntilDelimiter(
148	self: Self,
149	writer: anytype,
150	delimiter: u8,
151	optional_max_size: ?usize,
152	) (NoEofError \|\| error{StreamTooLong} \|\| @TypeOf(writer).Error)!void {
153	return @errorCast(self.any().streamUntilDelimiter(
154	writer,
155	delimiter,
156	optional_max_size,
157	));
158	}
159
160	pub inline fn skipUntilDelimiterOrEof(self: Self, delimiter: u8) Error!void {
161	return @errorCast(self.any().skipUntilDelimiterOrEof(delimiter));
162	}
163
164	pub inline fn readByte(self: Self) NoEofError!u8 {
165	return @errorCast(self.any().readByte());
166	}
167
168	pub inline fn readByteSigned(self: Self) NoEofError!i8 {
169	return @errorCast(self.any().readByteSigned());
170	}
171
172	pub inline fn readBytesNoEof(
173	self: Self,
174	comptime num_bytes: usize,
175	) NoEofError![num_bytes]u8 {
176	return @errorCast(self.any().readBytesNoEof(num_bytes));
177	}
178
179	pub inline fn readInt(self: Self, comptime T: type, endian: std.builtin.Endian) NoEofError!T {
180	return @errorCast(self.any().readInt(T, endian));
181	}
182
183	pub inline fn readVarInt(
184	self: Self,
185	comptime ReturnType: type,
186	endian: std.builtin.Endian,
187	size: usize,
188	) NoEofError!ReturnType {
189	return @errorCast(self.any().readVarInt(ReturnType, endian, size));
190	}
191
192	pub const SkipBytesOptions = AnyReader.SkipBytesOptions;
193
194	pub inline fn skipBytes(
195	self: Self,
196	num_bytes: u64,
197	comptime options: SkipBytesOptions,
198	) NoEofError!void {
199	return @errorCast(self.any().skipBytes(num_bytes, options));
200	}
201
202	pub inline fn isBytes(self: Self, slice: []const u8) NoEofError!bool {
203	return @errorCast(self.any().isBytes(slice));
204	}
205
206	pub inline fn readStruct(self: Self, comptime T: type) NoEofError!T {
207	return @errorCast(self.any().readStruct(T));
208	}
209
210	pub inline fn readStructEndian(self: Self, comptime T: type, endian: std.builtin.Endian) NoEofError!T {
211	return @errorCast(self.any().readStructEndian(T, endian));
212	}
213
214	pub const ReadEnumError = NoEofError \|\| error{
215	/// An integer was read, but it did not match any of the tags in the supplied enum.
216	InvalidValue,
217	};
218
219	pub inline fn readEnum(
220	self: Self,
221	comptime Enum: type,
222	endian: std.builtin.Endian,
223	) ReadEnumError!Enum {
224	return @errorCast(self.any().readEnum(Enum, endian));
225	}
226
227	pub inline fn any(self: *const Self) AnyReader {
228	return .{
229	.context = @ptrCast(&self.context),
230	.readFn = typeErasedReadFn,
231	};
232	}
233
234	const Self = @This();
235
236	fn typeErasedReadFn(context: *const anyopaque, buffer: []u8) anyerror!usize {
237	const ptr: *const Context = @ptrCast(@alignCast(context));
238	return readFn(ptr.*, buffer);
239	}
240
241	/// Helper for bridging to the new `Reader` API while upgrading.
242	pub fn adaptToNewApi(self: *const Self, buffer: []u8) Adapter {
243	return .{
244	.derp_reader = self.*,
245	.new_interface = .{
246	.buffer = buffer,
247	.vtable = &.{ .stream = Adapter.stream },
248	.seek = 0,
249	.end = 0,
250	},
251	};
252	}
253
254	pub const Adapter = struct {
255	derp_reader: Self,
256	new_interface: Reader,
257	err: ?Error = null,
258
259	fn stream(r: Reader, w: Writer, limit: Limit) Reader.StreamError!usize {
260	const a: *@This() = @alignCast(@fieldParentPtr("new_interface", r));
261	const buf = limit.slice(try w.writableSliceGreedy(1));
262	const n = a.derp_reader.read(buf) catch \|err\| {
263	a.err = err;
264	return error.ReadFailed;
265	};
266	if (n == 0) return error.EndOfStream;
267	w.advance(n);
268	return n;
269	}
270	};
271	};
272	}
273
274	/// Deprecated in favor of `Reader`.
275	pub const AnyReader = @import("Io/DeprecatedReader.zig");
276	/// Deprecated in favor of `Reader`.
277	pub const FixedBufferStream = @import("Io/fixed_buffer_stream.zig").FixedBufferStream;
278	/// Deprecated in favor of `Reader`.
279	pub const fixedBufferStream = @import("Io/fixed_buffer_stream.zig").fixedBufferStream;
280
281	pub const tty = @import("Io/tty.zig");	85	pub const tty = @import("Io/tty.zig");
282		86
283	pub fn poll(	87	pub fn poll(
...	@@ -746,7 +550,6 @@ pub fn PollFiles(comptime StreamEnum: type) type {	...	@@ -746,7 +550,6 @@ pub fn PollFiles(comptime StreamEnum: type) type {
746	test {	550	test {
747	_ = Reader;	551	_ = Reader;
748	_ = Writer;	552	_ = Writer;
749	_ = FixedBufferStream;
750	_ = tty;	553	_ = tty;
751	_ = @import("Io/test.zig");	554	_ = @import("Io/test.zig");
752	}	555	}

lib/std/Io/DeprecatedReader.zig deleted-292

...	@@ -1,292 +0,0 @@
1	context: *const anyopaque,
2	readFn: const fn (context: const anyopaque, buffer: []u8) anyerror!usize,
3
4	pub const Error = anyerror;
5
6	/// Returns the number of bytes read. It may be less than buffer.len.
7	/// If the number of bytes read is 0, it means end of stream.
8	/// End of stream is not an error condition.
9	pub fn read(self: Self, buffer: []u8) anyerror!usize {
10	return self.readFn(self.context, buffer);
11	}
12
13	/// Returns the number of bytes read. If the number read is smaller than `buffer.len`, it
14	/// means the stream reached the end. Reaching the end of a stream is not an error
15	/// condition.
16	pub fn readAll(self: Self, buffer: []u8) anyerror!usize {
17	return readAtLeast(self, buffer, buffer.len);
18	}
19
20	/// Returns the number of bytes read, calling the underlying read
21	/// function the minimal number of times until the buffer has at least
22	/// `len` bytes filled. If the number read is less than `len` it means
23	/// the stream reached the end. Reaching the end of the stream is not
24	/// an error condition.
25	pub fn readAtLeast(self: Self, buffer: []u8, len: usize) anyerror!usize {
26	assert(len <= buffer.len);
27	var index: usize = 0;
28	while (index < len) {
29	const amt = try self.read(buffer[index..]);
30	if (amt == 0) break;
31	index += amt;
32	}
33	return index;
34	}
35
36	/// If the number read would be smaller than `buf.len`, `error.EndOfStream` is returned instead.
37	pub fn readNoEof(self: Self, buf: []u8) anyerror!void {
38	const amt_read = try self.readAll(buf);
39	if (amt_read < buf.len) return error.EndOfStream;
40	}
41
42	/// Appends to the `std.array_list.Managed` contents by reading from the stream
43	/// until end of stream is found.
44	/// If the number of bytes appended would exceed `max_append_size`,
45	/// `error.StreamTooLong` is returned
46	/// and the `std.array_list.Managed` has exactly `max_append_size` bytes appended.
47	pub fn readAllArrayList(
48	self: Self,
49	array_list: *std.array_list.Managed(u8),
50	max_append_size: usize,
51	) anyerror!void {
52	return self.readAllArrayListAligned(null, array_list, max_append_size);
53	}
54
55	pub fn readAllArrayListAligned(
56	self: Self,
57	comptime alignment: ?Alignment,
58	array_list: *std.array_list.AlignedManaged(u8, alignment),
59	max_append_size: usize,
60	) anyerror!void {
61	try array_list.ensureTotalCapacity(@min(max_append_size, 4096));
62	const original_len = array_list.items.len;
63	var start_index: usize = original_len;
64	while (true) {
65	array_list.expandToCapacity();
66	const dest_slice = array_list.items[start_index..];
67	const bytes_read = try self.readAll(dest_slice);
68	start_index += bytes_read;
69
70	if (start_index - original_len > max_append_size) {
71	array_list.shrinkAndFree(original_len + max_append_size);
72	return error.StreamTooLong;
73	}
74
75	if (bytes_read != dest_slice.len) {
76	array_list.shrinkAndFree(start_index);
77	return;
78	}
79
80	// This will trigger ArrayList to expand superlinearly at whatever its growth rate is.
81	try array_list.ensureTotalCapacity(start_index + 1);
82	}
83	}
84
85	/// Allocates enough memory to hold all the contents of the stream. If the allocated
86	/// memory would be greater than `max_size`, returns `error.StreamTooLong`.
87	/// Caller owns returned memory.
88	/// If this function returns an error, the contents from the stream read so far are lost.
89	pub fn readAllAlloc(self: Self, allocator: mem.Allocator, max_size: usize) anyerror![]u8 {
90	var array_list = std.array_list.Managed(u8).init(allocator);
91	defer array_list.deinit();
92	try self.readAllArrayList(&array_list, max_size);
93	return try array_list.toOwnedSlice();
94	}
95
96	/// Appends to the `writer` contents by reading from the stream until `delimiter` is found.
97	/// Does not write the delimiter itself.
98	/// If `optional_max_size` is not null and amount of written bytes exceeds `optional_max_size`,
99	/// returns `error.StreamTooLong` and finishes appending.
100	/// If `optional_max_size` is null, appending is unbounded.
101	pub fn streamUntilDelimiter(
102	self: Self,
103	writer: anytype,
104	delimiter: u8,
105	optional_max_size: ?usize,
106	) anyerror!void {
107	if (optional_max_size) \|max_size\| {
108	for (0..max_size) \|_\| {
109	const byte: u8 = try self.readByte();
110	if (byte == delimiter) return;
111	try writer.writeByte(byte);
112	}
113	return error.StreamTooLong;
114	} else {
115	while (true) {
116	const byte: u8 = try self.readByte();
117	if (byte == delimiter) return;
118	try writer.writeByte(byte);
119	}
120	// Can not throw `error.StreamTooLong` since there are no boundary.
121	}
122	}
123
124	/// Reads from the stream until specified byte is found, discarding all data,
125	/// including the delimiter.
126	/// If end-of-stream is found, this function succeeds.
127	pub fn skipUntilDelimiterOrEof(self: Self, delimiter: u8) anyerror!void {
128	while (true) {
129	const byte = self.readByte() catch \|err\| switch (err) {
130	error.EndOfStream => return,
131	else => \|e\| return e,
132	};
133	if (byte == delimiter) return;
134	}
135	}
136
137	/// Reads 1 byte from the stream or returns `error.EndOfStream`.
138	pub fn readByte(self: Self) anyerror!u8 {
139	var result: [1]u8 = undefined;
140	const amt_read = try self.read(result[0..]);
141	if (amt_read < 1) return error.EndOfStream;
142	return result[0];
143	}
144
145	/// Same as `readByte` except the returned byte is signed.
146	pub fn readByteSigned(self: Self) anyerror!i8 {
147	return @as(i8, @bitCast(try self.readByte()));
148	}
149
150	/// Reads exactly `num_bytes` bytes and returns as an array.
151	/// `num_bytes` must be comptime-known
152	pub fn readBytesNoEof(self: Self, comptime num_bytes: usize) anyerror![num_bytes]u8 {
153	var bytes: [num_bytes]u8 = undefined;
154	try self.readNoEof(&bytes);
155	return bytes;
156	}
157
158	pub inline fn readInt(self: Self, comptime T: type, endian: std.builtin.Endian) anyerror!T {
159	const bytes = try self.readBytesNoEof(@divExact(@typeInfo(T).int.bits, 8));
160	return mem.readInt(T, &bytes, endian);
161	}
162
163	pub fn readVarInt(
164	self: Self,
165	comptime ReturnType: type,
166	endian: std.builtin.Endian,
167	size: usize,
168	) anyerror!ReturnType {
169	assert(size <= @sizeOf(ReturnType));
170	var bytes_buf: [@sizeOf(ReturnType)]u8 = undefined;
171	const bytes = bytes_buf[0..size];
172	try self.readNoEof(bytes);
173	return mem.readVarInt(ReturnType, bytes, endian);
174	}
175
176	/// Optional parameters for `skipBytes`
177	pub const SkipBytesOptions = struct {
178	buf_size: usize = 512,
179	};
180
181	// `num_bytes` is a `u64` to match `off_t`
182	/// Reads `num_bytes` bytes from the stream and discards them
183	pub fn skipBytes(self: Self, num_bytes: u64, comptime options: SkipBytesOptions) anyerror!void {
184	var buf: [options.buf_size]u8 = undefined;
185	var remaining = num_bytes;
186
187	while (remaining > 0) {
188	const amt = @min(remaining, options.buf_size);
189	try self.readNoEof(buf[0..amt]);
190	remaining -= amt;
191	}
192	}
193
194	/// Reads `slice.len` bytes from the stream and returns if they are the same as the passed slice
195	pub fn isBytes(self: Self, slice: []const u8) anyerror!bool {
196	var i: usize = 0;
197	var matches = true;
198	while (i < slice.len) : (i += 1) {
199	if (slice[i] != try self.readByte()) {
200	matches = false;
201	}
202	}
203	return matches;
204	}
205
206	pub fn readStruct(self: Self, comptime T: type) anyerror!T {
207	// Only extern and packed structs have defined in-memory layout.
208	comptime assert(@typeInfo(T).@"struct".layout != .auto);
209	var res: [1]T = undefined;
210	try self.readNoEof(mem.sliceAsBytes(res[0..]));
211	return res[0];
212	}
213
214	pub fn readStructEndian(self: Self, comptime T: type, endian: std.builtin.Endian) anyerror!T {
215	var res = try self.readStruct(T);
216	if (native_endian != endian) {
217	mem.byteSwapAllFields(T, &res);
218	}
219	return res;
220	}
221
222	/// Reads an integer with the same size as the given enum's tag type. If the integer matches
223	/// an enum tag, casts the integer to the enum tag and returns it. Otherwise, returns an `error.InvalidValue`.
224	/// TODO optimization taking advantage of most fields being in order
225	pub fn readEnum(self: Self, comptime Enum: type, endian: std.builtin.Endian) anyerror!Enum {
226	const E = error{
227	/// An integer was read, but it did not match any of the tags in the supplied enum.
228	InvalidValue,
229	};
230	const type_info = @typeInfo(Enum).@"enum";
231	const tag = try self.readInt(type_info.tag_type, endian);
232
233	inline for (std.meta.fields(Enum)) \|field\| {
234	if (tag == field.value) {
235	return @field(Enum, field.name);
236	}
237	}
238
239	return E.InvalidValue;
240	}
241
242	/// Reads the stream until the end, ignoring all the data.
243	/// Returns the number of bytes discarded.
244	pub fn discard(self: Self) anyerror!u64 {
245	var trash: [4096]u8 = undefined;
246	var index: u64 = 0;
247	while (true) {
248	const n = try self.read(&trash);
249	if (n == 0) return index;
250	index += n;
251	}
252	}
253
254	/// Helper for bridging to the new `Reader` API while upgrading.
255	pub fn adaptToNewApi(self: *const Self, buffer: []u8) Adapter {
256	return .{
257	.derp_reader = self.*,
258	.new_interface = .{
259	.buffer = buffer,
260	.vtable = &.{ .stream = Adapter.stream },
261	.seek = 0,
262	.end = 0,
263	},
264	};
265	}
266
267	pub const Adapter = struct {
268	derp_reader: Self,
269	new_interface: std.io.Reader,
270	err: ?Error = null,
271
272	fn stream(r: std.io.Reader, w: std.io.Writer, limit: std.io.Limit) std.io.Reader.StreamError!usize {
273	const a: *@This() = @alignCast(@fieldParentPtr("new_interface", r));
274	const buf = limit.slice(try w.writableSliceGreedy(1));
275	const n = a.derp_reader.read(buf) catch \|err\| {
276	a.err = err;
277	return error.ReadFailed;
278	};
279	if (n == 0) return error.EndOfStream;
280	w.advance(n);
281	return n;
282	}
283	};
284
285	const std = @import("../std.zig");
286	const Self = @This();
287	const math = std.math;
288	const assert = std.debug.assert;
289	const mem = std.mem;
290	const testing = std.testing;
291	const native_endian = @import("builtin").target.cpu.arch.endian();
292	const Alignment = std.mem.Alignment;

lib/std/Io/Reader.zig+132-21

...	@@ -4,12 +4,12 @@ const builtin = @import("builtin");	...	@@ -4,12 +4,12 @@ const builtin = @import("builtin");
4	const native_endian = builtin.target.cpu.arch.endian();	4	const native_endian = builtin.target.cpu.arch.endian();
5		5
6	const std = @import("../std.zig");	6	const std = @import("../std.zig");
7	const Writer = std.io.Writer;	7	const Writer = std.Io.Writer;
		8	const Limit = std.Io.Limit;
8	const assert = std.debug.assert;	9	const assert = std.debug.assert;
9	const testing = std.testing;	10	const testing = std.testing;
10	const Allocator = std.mem.Allocator;	11	const Allocator = std.mem.Allocator;
11	const ArrayList = std.ArrayList;	12	const ArrayList = std.ArrayList;
12	const Limit = std.io.Limit;
13		13
14	pub const Limited = @import("Reader/Limited.zig");	14	pub const Limited = @import("Reader/Limited.zig");
15		15
...	@@ -292,6 +292,23 @@ pub fn allocRemaining(r: *Reader, gpa: Allocator, limit: Limit) LimitedAllocErro	...	@@ -292,6 +292,23 @@ pub fn allocRemaining(r: *Reader, gpa: Allocator, limit: Limit) LimitedAllocErro
292	return buffer.toOwnedSlice(gpa);	292	return buffer.toOwnedSlice(gpa);
293	}	293	}
294		294
		295	pub fn allocRemainingAlignedSentinel(
		296	r: *Reader,
		297	gpa: Allocator,
		298	limit: Limit,
		299	comptime alignment: std.mem.Alignment,
		300	comptime sentinel: ?u8,
		301	) LimitedAllocError!(if (sentinel) \|s\| [:s]align(alignment.toByteUnits()) u8 else []align(alignment.toByteUnits()) u8) {
		302	var buffer: std.array_list.Aligned(u8, alignment) = .empty;
		303	defer buffer.deinit(gpa);
		304	try appendRemainingAligned(r, gpa, alignment, &buffer, limit);
		305	if (sentinel) \|s\| {
		306	return buffer.toOwnedSliceSentinel(gpa, s);
		307	} else {
		308	return buffer.toOwnedSlice(gpa);
		309	}
		310	}
		311
295	/// Transfers all bytes from the current position to the end of the stream, up	312	/// Transfers all bytes from the current position to the end of the stream, up
296	/// to `limit`, appending them to `list`.	313	/// to `limit`, appending them to `list`.
297	///	314	///
...	@@ -308,15 +325,30 @@ pub fn appendRemaining(	...	@@ -308,15 +325,30 @@ pub fn appendRemaining(
308	list: *ArrayList(u8),	325	list: *ArrayList(u8),
309	limit: Limit,	326	limit: Limit,
310	) LimitedAllocError!void {	327	) LimitedAllocError!void {
311	var a: std.Io.Writer.Allocating = .initOwnedSlice(gpa, list.allocatedSlice());	328	return appendRemainingAligned(r, gpa, .of(u8), list, limit);
312	a.writer.end = list.items.len;	329	}
313	list.* = .empty;	330
314	defer {	331	/// Transfers all bytes from the current position to the end of the stream, up
315	list.* = .{	332	/// to `limit`, appending them to `list`.
316	.items = a.writer.buffer[0..a.writer.end],	333	///
317	.capacity = a.writer.buffer.len,	334	/// If `limit` is reached or exceeded, `error.StreamTooLong` is returned
318	};	335	/// instead. In such case, the next byte that would be read will be the first
319	}	336	/// one to exceed `limit`, and all preceeding bytes have been appended to
		337	/// `list`.
		338	///
		339	/// See also:
		340	/// * `appendRemaining`
		341	/// * `allocRemainingAligned`
		342	pub fn appendRemainingAligned(
		343	r: *Reader,
		344	gpa: Allocator,
		345	comptime alignment: std.mem.Alignment,
		346	list: *std.array_list.Aligned(u8, alignment),
		347	limit: Limit,
		348	) LimitedAllocError!void {
		349	var a = std.Io.Writer.Allocating.fromArrayListAligned(gpa, alignment, list);
		350	defer list.* = a.toArrayListAligned(alignment);
		351
320	var remaining = limit;	352	var remaining = limit;
321	while (remaining.nonzero()) {	353	while (remaining.nonzero()) {
322	const n = stream(r, &a.writer, remaining) catch \|err\| switch (err) {	354	const n = stream(r, &a.writer, remaining) catch \|err\| switch (err) {
...	@@ -1584,7 +1616,7 @@ test readVec {	...	@@ -1584,7 +1616,7 @@ test readVec {
1584	test "expected error.EndOfStream" {	1616	test "expected error.EndOfStream" {
1585	// Unit test inspired by https://github.com/ziglang/zig/issues/17733	1617	// Unit test inspired by https://github.com/ziglang/zig/issues/17733
1586	var buffer: [3]u8 = undefined;	1618	var buffer: [3]u8 = undefined;
1587	var r: std.io.Reader = .fixed(&buffer);	1619	var r: std.Io.Reader = .fixed(&buffer);
1588	r.end = 0; // capacity 3, but empty	1620	r.end = 0; // capacity 3, but empty
1589	try std.testing.expectError(error.EndOfStream, r.takeEnum(enum(u8) { a, b }, .little));	1621	try std.testing.expectError(error.EndOfStream, r.takeEnum(enum(u8) { a, b }, .little));
1590	try std.testing.expectError(error.EndOfStream, r.take(3));	1622	try std.testing.expectError(error.EndOfStream, r.take(3));
...	@@ -1639,15 +1671,6 @@ fn failingDiscard(r: *Reader, limit: Limit) Error!usize {	...	@@ -1639,15 +1671,6 @@ fn failingDiscard(r: *Reader, limit: Limit) Error!usize {
1639	return error.ReadFailed;	1671	return error.ReadFailed;
1640	}	1672	}
1641		1673
1642	pub fn adaptToOldInterface(r: *Reader) std.Io.AnyReader {
1643	return .{ .context = r, .readFn = derpRead };
1644	}
1645
1646	fn derpRead(context: *const anyopaque, buffer: []u8) anyerror!usize {
1647	const r: *Reader = @ptrCast(@alignCast(@constCast(context)));
1648	return r.readSliceShort(buffer);
1649	}
1650
1651	test "readAlloc when the backing reader provides one byte at a time" {	1674	test "readAlloc when the backing reader provides one byte at a time" {
1652	const str = "This is a test";	1675	const str = "This is a test";
1653	var tiny_buffer: [1]u8 = undefined;	1676	var tiny_buffer: [1]u8 = undefined;
...	@@ -1870,6 +1893,94 @@ pub fn writableVector(r: *Reader, buffer: [][]u8, data: []const []u8) Error!stru	...	@@ -1870,6 +1893,94 @@ pub fn writableVector(r: *Reader, buffer: [][]u8, data: []const []u8) Error!stru
1870	return .{ i, n };	1893	return .{ i, n };
1871	}	1894	}
1872		1895
		1896	test "deserialize signed LEB128" {
		1897	// Truncated
		1898	try testing.expectError(error.EndOfStream, testLeb128(i64, "\x80"));
		1899
		1900	// Overflow
		1901	try testing.expectError(error.Overflow, testLeb128(i8, "\x80\x80\x40"));
		1902	try testing.expectError(error.Overflow, testLeb128(i16, "\x80\x80\x80\x40"));
		1903	try testing.expectError(error.Overflow, testLeb128(i32, "\x80\x80\x80\x80\x40"));
		1904	try testing.expectError(error.Overflow, testLeb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x40"));
		1905	try testing.expectError(error.Overflow, testLeb128(i8, "\xff\x7e"));
		1906	try testing.expectError(error.Overflow, testLeb128(i32, "\x80\x80\x80\x80\x08"));
		1907	try testing.expectError(error.Overflow, testLeb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x01"));
		1908
		1909	// Decode SLEB128
		1910	try testing.expect((try testLeb128(i64, "\x00")) == 0);
		1911	try testing.expect((try testLeb128(i64, "\x01")) == 1);
		1912	try testing.expect((try testLeb128(i64, "\x3f")) == 63);
		1913	try testing.expect((try testLeb128(i64, "\x40")) == -64);
		1914	try testing.expect((try testLeb128(i64, "\x41")) == -63);
		1915	try testing.expect((try testLeb128(i64, "\x7f")) == -1);
		1916	try testing.expect((try testLeb128(i64, "\x80\x01")) == 128);
		1917	try testing.expect((try testLeb128(i64, "\x81\x01")) == 129);
		1918	try testing.expect((try testLeb128(i64, "\xff\x7e")) == -129);
		1919	try testing.expect((try testLeb128(i64, "\x80\x7f")) == -128);
		1920	try testing.expect((try testLeb128(i64, "\x81\x7f")) == -127);
		1921	try testing.expect((try testLeb128(i64, "\xc0\x00")) == 64);
		1922	try testing.expect((try testLeb128(i64, "\xc7\x9f\x7f")) == -12345);
		1923	try testing.expect((try testLeb128(i8, "\xff\x7f")) == -1);
		1924	try testing.expect((try testLeb128(i16, "\xff\xff\x7f")) == -1);
		1925	try testing.expect((try testLeb128(i32, "\xff\xff\xff\xff\x7f")) == -1);
		1926	try testing.expect((try testLeb128(i32, "\x80\x80\x80\x80\x78")) == -0x80000000);
		1927	try testing.expect((try testLeb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x7f")) == @as(i64, @bitCast(@as(u64, @intCast(0x8000000000000000)))));
		1928	try testing.expect((try testLeb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x40")) == -0x4000000000000000);
		1929	try testing.expect((try testLeb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x7f")) == -0x8000000000000000);
		1930
		1931	// Decode unnormalized SLEB128 with extra padding bytes.
		1932	try testing.expect((try testLeb128(i64, "\x80\x00")) == 0);
		1933	try testing.expect((try testLeb128(i64, "\x80\x80\x00")) == 0);
		1934	try testing.expect((try testLeb128(i64, "\xff\x00")) == 0x7f);
		1935	try testing.expect((try testLeb128(i64, "\xff\x80\x00")) == 0x7f);
		1936	try testing.expect((try testLeb128(i64, "\x80\x81\x00")) == 0x80);
		1937	try testing.expect((try testLeb128(i64, "\x80\x81\x80\x00")) == 0x80);
		1938	}
		1939
		1940	test "deserialize unsigned LEB128" {
		1941	// Truncated
		1942	try testing.expectError(error.EndOfStream, testLeb128(u64, "\x80"));
		1943	try testing.expectError(error.EndOfStream, testLeb128(u16, "\x80\x80\x84"));
		1944	try testing.expectError(error.EndOfStream, testLeb128(u32, "\x80\x80\x80\x80\x90"));
		1945
		1946	// Overflow
		1947	try testing.expectError(error.Overflow, testLeb128(u8, "\x80\x02"));
		1948	try testing.expectError(error.Overflow, testLeb128(u8, "\x80\x80\x40"));
		1949	try testing.expectError(error.Overflow, testLeb128(u16, "\x80\x80\x80\x40"));
		1950	try testing.expectError(error.Overflow, testLeb128(u32, "\x80\x80\x80\x80\x40"));
		1951	try testing.expectError(error.Overflow, testLeb128(u64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x40"));
		1952
		1953	// Decode ULEB128
		1954	try testing.expect((try testLeb128(u64, "\x00")) == 0);
		1955	try testing.expect((try testLeb128(u64, "\x01")) == 1);
		1956	try testing.expect((try testLeb128(u64, "\x3f")) == 63);
		1957	try testing.expect((try testLeb128(u64, "\x40")) == 64);
		1958	try testing.expect((try testLeb128(u64, "\x7f")) == 0x7f);
		1959	try testing.expect((try testLeb128(u64, "\x80\x01")) == 0x80);
		1960	try testing.expect((try testLeb128(u64, "\x81\x01")) == 0x81);
		1961	try testing.expect((try testLeb128(u64, "\x90\x01")) == 0x90);
		1962	try testing.expect((try testLeb128(u64, "\xff\x01")) == 0xff);
		1963	try testing.expect((try testLeb128(u64, "\x80\x02")) == 0x100);
		1964	try testing.expect((try testLeb128(u64, "\x81\x02")) == 0x101);
		1965	try testing.expect((try testLeb128(u64, "\x80\xc1\x80\x80\x10")) == 4294975616);
		1966	try testing.expect((try testLeb128(u64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x01")) == 0x8000000000000000);
		1967
		1968	// Decode ULEB128 with extra padding bytes
		1969	try testing.expect((try testLeb128(u64, "\x80\x00")) == 0);
		1970	try testing.expect((try testLeb128(u64, "\x80\x80\x00")) == 0);
		1971	try testing.expect((try testLeb128(u64, "\xff\x00")) == 0x7f);
		1972	try testing.expect((try testLeb128(u64, "\xff\x80\x00")) == 0x7f);
		1973	try testing.expect((try testLeb128(u64, "\x80\x81\x00")) == 0x80);
		1974	try testing.expect((try testLeb128(u64, "\x80\x81\x80\x00")) == 0x80);
		1975	}
		1976
		1977	fn testLeb128(comptime T: type, encoded: []const u8) !T {
		1978	var reader: std.Io.Reader = .fixed(encoded);
		1979	const result = try reader.takeLeb128(T);
		1980	try testing.expect(reader.seek == reader.end);
		1981	return result;
		1982	}
		1983
1873	test {	1984	test {
1874	_ = Limited;	1985	_ = Limited;
1875	}	1986	}

lib/std/Io/Reader/Limited.zig+3-3

...	@@ -1,9 +1,9 @@	...	@@ -1,9 +1,9 @@
1	const Limited = @This();	1	const Limited = @This();
2		2
3	const std = @import("../../std.zig");	3	const std = @import("../../std.zig");
4	const Reader = std.io.Reader;	4	const Reader = std.Io.Reader;
5	const Writer = std.io.Writer;	5	const Writer = std.Io.Writer;
6	const Limit = std.io.Limit;	6	const Limit = std.Io.Limit;
7		7
8	unlimited: *Reader,	8	unlimited: *Reader,
9	remaining: Limit,	9	remaining: Limit,

lib/std/Io/Writer.zig+123-47

...	@@ -2531,13 +2531,14 @@ pub fn Hashing(comptime Hasher: type) type {	...	@@ -2531,13 +2531,14 @@ pub fn Hashing(comptime Hasher: type) type {
2531	/// Maintains `Writer` state such that it writes to the unused capacity of an	2531	/// Maintains `Writer` state such that it writes to the unused capacity of an
2532	/// array list, filling it up completely before making a call through the	2532	/// array list, filling it up completely before making a call through the
2533	/// vtable, causing a resize. Consequently, the same, optimized, non-generic	2533	/// vtable, causing a resize. Consequently, the same, optimized, non-generic
2534	/// machine code that uses `std.Io.Reader`, such as formatted printing, takes	2534	/// machine code that uses `Writer`, such as formatted printing, takes
2535	/// the hot paths when using this API.	2535	/// the hot paths when using this API.
2536	///	2536	///
2537	/// When using this API, it is not necessary to call `flush`.	2537	/// When using this API, it is not necessary to call `flush`.
2538	pub const Allocating = struct {	2538	pub const Allocating = struct {
2539	allocator: Allocator,	2539	allocator: Allocator,
2540	writer: Writer,	2540	writer: Writer,
		2541	alignment: std.mem.Alignment,
2541		2542
2542	pub fn init(allocator: Allocator) Allocating {	2543	pub fn init(allocator: Allocator) Allocating {
2543	return .{	2544	return .{
...	@@ -2546,6 +2547,7 @@ pub const Allocating = struct {	...	@@ -2546,6 +2547,7 @@ pub const Allocating = struct {
2546	.buffer = &.{},	2547	.buffer = &.{},
2547	.vtable = &vtable,	2548	.vtable = &vtable,
2548	},	2549	},
		2550	.alignment = .of(u8),
2549	};	2551	};
2550	}	2552	}
2551		2553
...	@@ -2553,24 +2555,47 @@ pub const Allocating = struct {	...	@@ -2553,24 +2555,47 @@ pub const Allocating = struct {
2553	return .{	2555	return .{
2554	.allocator = allocator,	2556	.allocator = allocator,
2555	.writer = .{	2557	.writer = .{
2556	.buffer = try allocator.alloc(u8, capacity),	2558	.buffer = if (capacity == 0)
		2559	&.{}
		2560	else
		2561	(allocator.rawAlloc(capacity, .of(u8), @returnAddress()) orelse
		2562	return error.OutOfMemory)[0..capacity],
2557	.vtable = &vtable,	2563	.vtable = &vtable,
2558	},	2564	},
		2565	.alignment = .of(u8),
2559	};	2566	};
2560	}	2567	}
2561		2568
2562	pub fn initOwnedSlice(allocator: Allocator, slice: []u8) Allocating {	2569	pub fn initOwnedSlice(allocator: Allocator, slice: []u8) Allocating {
		2570	return initOwnedSliceAligned(allocator, .of(u8), slice);
		2571	}
		2572
		2573	pub fn initOwnedSliceAligned(
		2574	allocator: Allocator,
		2575	comptime alignment: std.mem.Alignment,
		2576	slice: []align(alignment.toByteUnits()) u8,
		2577	) Allocating {
2563	return .{	2578	return .{
2564	.allocator = allocator,	2579	.allocator = allocator,
2565	.writer = .{	2580	.writer = .{
2566	.buffer = slice,	2581	.buffer = slice,
2567	.vtable = &vtable,	2582	.vtable = &vtable,
2568	},	2583	},
		2584	.alignment = alignment,
2569	};	2585	};
2570	}	2586	}
2571		2587
2572	/// Replaces `array_list` with empty, taking ownership of the memory.	2588	/// Replaces `array_list` with empty, taking ownership of the memory.
2573	pub fn fromArrayList(allocator: Allocator, array_list: *ArrayList(u8)) Allocating {	2589	pub fn fromArrayList(allocator: Allocator, array_list: *ArrayList(u8)) Allocating {
		2590	return fromArrayListAligned(allocator, .of(u8), array_list);
		2591	}
		2592
		2593	/// Replaces `array_list` with empty, taking ownership of the memory.
		2594	pub fn fromArrayListAligned(
		2595	allocator: Allocator,
		2596	comptime alignment: std.mem.Alignment,
		2597	array_list: *std.array_list.Aligned(u8, alignment),
		2598	) Allocating {
2574	defer array_list.* = .empty;	2599	defer array_list.* = .empty;
2575	return .{	2600	return .{
2576	.allocator = allocator,	2601	.allocator = allocator,
...	@@ -2579,6 +2604,7 @@ pub const Allocating = struct {	...	@@ -2579,6 +2604,7 @@ pub const Allocating = struct {
2579	.buffer = array_list.allocatedSlice(),	2604	.buffer = array_list.allocatedSlice(),
2580	.end = array_list.items.len,	2605	.end = array_list.items.len,
2581	},	2606	},
		2607	.alignment = alignment,
2582	};	2608	};
2583	}	2609	}
2584		2610
...	@@ -2590,16 +2616,27 @@ pub const Allocating = struct {	...	@@ -2590,16 +2616,27 @@ pub const Allocating = struct {
2590	};	2616	};
2591		2617
2592	pub fn deinit(a: *Allocating) void {	2618	pub fn deinit(a: *Allocating) void {
2593	a.allocator.free(a.writer.buffer);	2619	if (a.writer.buffer.len == 0) return;
		2620	a.allocator.rawFree(a.writer.buffer, a.alignment, @returnAddress());
2594	a.* = undefined;	2621	a.* = undefined;
2595	}	2622	}
2596		2623
2597	/// Returns an array list that takes ownership of the allocated memory.	2624	/// Returns an array list that takes ownership of the allocated memory.
2598	/// Resets the `Allocating` to an empty state.	2625	/// Resets the `Allocating` to an empty state.
2599	pub fn toArrayList(a: *Allocating) ArrayList(u8) {	2626	pub fn toArrayList(a: *Allocating) ArrayList(u8) {
		2627	return toArrayListAligned(a, .of(u8));
		2628	}
		2629
		2630	/// Returns an array list that takes ownership of the allocated memory.
		2631	/// Resets the `Allocating` to an empty state.
		2632	pub fn toArrayListAligned(
		2633	a: *Allocating,
		2634	comptime alignment: std.mem.Alignment,
		2635	) std.array_list.Aligned(u8, alignment) {
		2636	assert(a.alignment == alignment); // Required for Allocator correctness.
2600	const w = &a.writer;	2637	const w = &a.writer;
2601	const result: ArrayList(u8) = .{	2638	const result: std.array_list.Aligned(u8, alignment) = .{
2602	.items = w.buffer[0..w.end],	2639	.items = @alignCast(w.buffer[0..w.end]),
2603	.capacity = w.buffer.len,	2640	.capacity = w.buffer.len,
2604	};	2641	};
2605	w.buffer = &.{};	2642	w.buffer = &.{};
...	@@ -2608,28 +2645,74 @@ pub const Allocating = struct {	...	@@ -2608,28 +2645,74 @@ pub const Allocating = struct {
2608	}	2645	}
2609		2646
2610	pub fn ensureUnusedCapacity(a: *Allocating, additional_count: usize) Allocator.Error!void {	2647	pub fn ensureUnusedCapacity(a: *Allocating, additional_count: usize) Allocator.Error!void {
2611	var list = a.toArrayList();	2648	const new_capacity = std.math.add(usize, a.writer.end, additional_count) catch return error.OutOfMemory;
2612	defer a.setArrayList(list);	2649	return ensureTotalCapacity(a, new_capacity);
2613	return list.ensureUnusedCapacity(a.allocator, additional_count);
2614	}	2650	}
2615		2651
2616	pub fn ensureTotalCapacity(a: *Allocating, new_capacity: usize) Allocator.Error!void {	2652	pub fn ensureTotalCapacity(a: *Allocating, new_capacity: usize) Allocator.Error!void {
2617	var list = a.toArrayList();	2653	// Protects growing unnecessarily since better_capacity will be larger.
2618	defer a.setArrayList(list);	2654	if (a.writer.buffer.len >= new_capacity) return;
2619	return list.ensureTotalCapacity(a.allocator, new_capacity);	2655	const better_capacity = ArrayList(u8).growCapacity(a.writer.buffer.len, new_capacity);
2620	}	2656	return ensureTotalCapacityPrecise(a, better_capacity);
		2657	}
		2658
		2659	pub fn ensureTotalCapacityPrecise(a: *Allocating, new_capacity: usize) Allocator.Error!void {
		2660	const old_memory = a.writer.buffer;
		2661	if (old_memory.len >= new_capacity) return;
		2662	assert(new_capacity != 0);
		2663	const alignment = a.alignment;
		2664	if (old_memory.len > 0) {
		2665	if (a.allocator.rawRemap(old_memory, alignment, new_capacity, @returnAddress())) \|new\| {
		2666	a.writer.buffer = new[0..new_capacity];
		2667	return;
		2668	}
		2669	}
		2670	const new_memory = (a.allocator.rawAlloc(new_capacity, alignment, @returnAddress()) orelse
		2671	return error.OutOfMemory)[0..new_capacity];
		2672	const saved = old_memory[0..a.writer.end];
		2673	@memcpy(new_memory[0..saved.len], saved);
		2674	if (old_memory.len != 0) a.allocator.rawFree(old_memory, alignment, @returnAddress());
		2675	a.writer.buffer = new_memory;
		2676	}
		2677
		2678	pub fn toOwnedSlice(a: *Allocating) Allocator.Error![]u8 {
		2679	const old_memory = a.writer.buffer;
		2680	const alignment = a.alignment;
		2681	const buffered_len = a.writer.end;
		2682
		2683	if (old_memory.len > 0) {
		2684	if (buffered_len == 0) {
		2685	a.allocator.rawFree(old_memory, alignment, @returnAddress());
		2686	a.writer.buffer = &.{};
		2687	a.writer.end = 0;
		2688	return old_memory[0..0];
		2689	} else if (a.allocator.rawRemap(old_memory, alignment, buffered_len, @returnAddress())) \|new\| {
		2690	a.writer.buffer = &.{};
		2691	a.writer.end = 0;
		2692	return new[0..buffered_len];
		2693	}
		2694	}
2621		2695
2622	pub fn toOwnedSlice(a: *Allocating) error{OutOfMemory}![]u8 {	2696	if (buffered_len == 0)
2623	var list = a.toArrayList();	2697	return a.writer.buffer[0..0];
2624	defer a.setArrayList(list);	2698
2625	return list.toOwnedSlice(a.allocator);	2699	const new_memory = (a.allocator.rawAlloc(buffered_len, alignment, @returnAddress()) orelse
		2700	return error.OutOfMemory)[0..buffered_len];
		2701	@memcpy(new_memory, old_memory[0..buffered_len]);
		2702	if (old_memory.len != 0) a.allocator.rawFree(old_memory, alignment, @returnAddress());
		2703	a.writer.buffer = &.{};
		2704	a.writer.end = 0;
		2705	return new_memory;
2626	}	2706	}
2627		2707
2628	pub fn toOwnedSliceSentinel(a: *Allocating, comptime sentinel: u8) error{OutOfMemory}![:sentinel]u8 {	2708	pub fn toOwnedSliceSentinel(a: *Allocating, comptime sentinel: u8) Allocator.Error![:sentinel]u8 {
2629	const gpa = a.allocator;	2709	// This addition can never overflow because `a.writer.buffer` can never occupy the whole address space.
2630	var list = @This().toArrayList(a);	2710	try ensureTotalCapacityPrecise(a, a.writer.end + 1);
2631	defer a.setArrayList(list);	2711	a.writer.buffer[a.writer.end] = sentinel;
2632	return list.toOwnedSliceSentinel(gpa, sentinel);	2712	a.writer.end += 1;
		2713	errdefer a.writer.end -= 1;
		2714	const result = try toOwnedSlice(a);
		2715	return result[0 .. result.len - 1 :sentinel];
2633	}	2716	}
2634		2717
2635	pub fn written(a: *Allocating) []u8 {	2718	pub fn written(a: *Allocating) []u8 {
...	@@ -2646,57 +2729,50 @@ pub const Allocating = struct {	...	@@ -2646,57 +2729,50 @@ pub const Allocating = struct {
2646		2729
2647	fn drain(w: *Writer, data: []const []const u8, splat: usize) Error!usize {	2730	fn drain(w: *Writer, data: []const []const u8, splat: usize) Error!usize {
2648	const a: *Allocating = @fieldParentPtr("writer", w);	2731	const a: *Allocating = @fieldParentPtr("writer", w);
2649	const gpa = a.allocator;
2650	const pattern = data[data.len - 1];	2732	const pattern = data[data.len - 1];
2651	const splat_len = pattern.len * splat;	2733	const splat_len = pattern.len * splat;
2652	var list = a.toArrayList();	2734	const start_len = a.writer.end;
2653	defer setArrayList(a, list);
2654	const start_len = list.items.len;
2655	assert(data.len != 0);	2735	assert(data.len != 0);
2656	for (data) \|bytes\| {	2736	for (data) \|bytes\| {
2657	list.ensureUnusedCapacity(gpa, bytes.len + splat_len + 1) catch return error.WriteFailed;	2737	a.ensureUnusedCapacity(bytes.len + splat_len + 1) catch return error.WriteFailed;
2658	list.appendSliceAssumeCapacity(bytes);	2738	@memcpy(a.writer.buffer[a.writer.end..][0..bytes.len], bytes);
		2739	a.writer.end += bytes.len;
2659	}	2740	}
2660	if (splat == 0) {	2741	if (splat == 0) {
2661	list.items.len -= pattern.len;	2742	a.writer.end -= pattern.len;
2662	} else switch (pattern.len) {	2743	} else switch (pattern.len) {
2663	0 => {},	2744	0 => {},
2664	1 => list.appendNTimesAssumeCapacity(pattern[0], splat - 1),	2745	1 => {
2665	else => for (0..splat - 1) \|_\| list.appendSliceAssumeCapacity(pattern),	2746	@memset(a.writer.buffer[a.writer.end..][0 .. splat - 1], pattern[0]);
		2747	a.writer.end += splat - 1;
		2748	},
		2749	else => for (0..splat - 1) \|_\| {
		2750	@memcpy(a.writer.buffer[a.writer.end..][0..pattern.len], pattern);
		2751	a.writer.end += pattern.len;
		2752	},
2666	}	2753	}
2667	return list.items.len - start_len;	2754	return a.writer.end - start_len;
2668	}	2755	}
2669		2756
2670	fn sendFile(w: Writer, file_reader: File.Reader, limit: Limit) FileError!usize {	2757	fn sendFile(w: Writer, file_reader: File.Reader, limit: Limit) FileError!usize {
2671	if (File.Handle == void) return error.Unimplemented;	2758	if (File.Handle == void) return error.Unimplemented;
2672	if (limit == .nothing) return 0;	2759	if (limit == .nothing) return 0;
2673	const a: *Allocating = @fieldParentPtr("writer", w);	2760	const a: *Allocating = @fieldParentPtr("writer", w);
2674	const gpa = a.allocator;
2675	var list = a.toArrayList();
2676	defer setArrayList(a, list);
2677	const pos = file_reader.logicalPos();	2761	const pos = file_reader.logicalPos();
2678	const additional = if (file_reader.getSize()) \|size\| size - pos else \|_\| std.atomic.cache_line;	2762	const additional = if (file_reader.getSize()) \|size\| size - pos else \|_\| std.atomic.cache_line;
2679	if (additional == 0) return error.EndOfStream;	2763	if (additional == 0) return error.EndOfStream;
2680	list.ensureUnusedCapacity(gpa, limit.minInt64(additional)) catch return error.WriteFailed;	2764	a.ensureUnusedCapacity(limit.minInt64(additional)) catch return error.WriteFailed;
2681	const dest = limit.slice(list.unusedCapacitySlice());	2765	const dest = limit.slice(a.writer.buffer[a.writer.end..]);
2682	const n = try file_reader.read(dest);	2766	const n = try file_reader.read(dest);
2683	list.items.len += n;	2767	a.writer.end += n;
2684	return n;	2768	return n;
2685	}	2769	}
2686		2770
2687	fn growingRebase(w: *Writer, preserve: usize, minimum_len: usize) Error!void {	2771	fn growingRebase(w: *Writer, preserve: usize, minimum_len: usize) Error!void {
2688	const a: *Allocating = @fieldParentPtr("writer", w);	2772	const a: *Allocating = @fieldParentPtr("writer", w);
2689	const gpa = a.allocator;
2690	var list = a.toArrayList();
2691	defer setArrayList(a, list);
2692	const total = std.math.add(usize, preserve, minimum_len) catch return error.WriteFailed;	2773	const total = std.math.add(usize, preserve, minimum_len) catch return error.WriteFailed;
2693	list.ensureTotalCapacity(gpa, total) catch return error.WriteFailed;	2774	a.ensureTotalCapacity(total) catch return error.WriteFailed;
2694	list.ensureUnusedCapacity(gpa, minimum_len) catch return error.WriteFailed;	2775	a.ensureUnusedCapacity(minimum_len) catch return error.WriteFailed;
2695	}
2696
2697	fn setArrayList(a: *Allocating, list: ArrayList(u8)) void {
2698	a.writer.buffer = list.allocatedSlice();
2699	a.writer.end = list.items.len;
2700	}	2776	}
2701		2777
2702	test Allocating {	2778	test Allocating {

lib/std/Io/fixed_buffer_stream.zig deleted-114

...	@@ -1,114 +0,0 @@
1	const std = @import("../std.zig");
2	const io = std.io;
3	const testing = std.testing;
4	const mem = std.mem;
5	const assert = std.debug.assert;
6
7	/// Deprecated in favor of `std.Io.Reader.fixed` and `std.Io.Writer.fixed`.
8	pub fn FixedBufferStream(comptime Buffer: type) type {
9	return struct {
10	/// `Buffer` is either a `[]u8` or `[]const u8`.
11	buffer: Buffer,
12	pos: usize,
13
14	pub const ReadError = error{};
15	pub const WriteError = error{NoSpaceLeft};
16	pub const SeekError = error{};
17	pub const GetSeekPosError = error{};
18
19	pub const Reader = io.GenericReader(*Self, ReadError, read);
20
21	const Self = @This();
22
23	pub fn reader(self: *Self) Reader {
24	return .{ .context = self };
25	}
26
27	pub fn read(self: *Self, dest: []u8) ReadError!usize {
28	const size = @min(dest.len, self.buffer.len - self.pos);
29	const end = self.pos + size;
30
31	@memcpy(dest[0..size], self.buffer[self.pos..end]);
32	self.pos = end;
33
34	return size;
35	}
36
37	pub fn seekTo(self: *Self, pos: u64) SeekError!void {
38	self.pos = @min(std.math.lossyCast(usize, pos), self.buffer.len);
39	}
40
41	pub fn seekBy(self: *Self, amt: i64) SeekError!void {
42	if (amt < 0) {
43	const abs_amt = @abs(amt);
44	const abs_amt_usize = std.math.cast(usize, abs_amt) orelse std.math.maxInt(usize);
45	if (abs_amt_usize > self.pos) {
46	self.pos = 0;
47	} else {
48	self.pos -= abs_amt_usize;
49	}
50	} else {
51	const amt_usize = std.math.cast(usize, amt) orelse std.math.maxInt(usize);
52	const new_pos = std.math.add(usize, self.pos, amt_usize) catch std.math.maxInt(usize);
53	self.pos = @min(self.buffer.len, new_pos);
54	}
55	}
56
57	pub fn getEndPos(self: *Self) GetSeekPosError!u64 {
58	return self.buffer.len;
59	}
60
61	pub fn getPos(self: *Self) GetSeekPosError!u64 {
62	return self.pos;
63	}
64
65	pub fn reset(self: *Self) void {
66	self.pos = 0;
67	}
68	};
69	}
70
71	pub fn fixedBufferStream(buffer: anytype) FixedBufferStream(Slice(@TypeOf(buffer))) {
72	return .{ .buffer = buffer, .pos = 0 };
73	}
74
75	fn Slice(comptime T: type) type {
76	switch (@typeInfo(T)) {
77	.pointer => \|ptr_info\| {
78	var new_ptr_info = ptr_info;
79	switch (ptr_info.size) {
80	.slice => {},
81	.one => switch (@typeInfo(ptr_info.child)) {
82	.array => \|info\| new_ptr_info.child = info.child,
83	else => @compileError("invalid type given to fixedBufferStream"),
84	},
85	else => @compileError("invalid type given to fixedBufferStream"),
86	}
87	new_ptr_info.size = .slice;
88	return @Type(.{ .pointer = new_ptr_info });
89	},
90	else => @compileError("invalid type given to fixedBufferStream"),
91	}
92	}
93
94	test "input" {
95	const bytes = [_]u8{ 1, 2, 3, 4, 5, 6, 7 };
96	var fbs = fixedBufferStream(&bytes);
97
98	var dest: [4]u8 = undefined;
99
100	var read = try fbs.reader().read(&dest);
101	try testing.expect(read == 4);
102	try testing.expect(mem.eql(u8, dest[0..4], bytes[0..4]));
103
104	read = try fbs.reader().read(&dest);
105	try testing.expect(read == 3);
106	try testing.expect(mem.eql(u8, dest[0..3], bytes[4..7]));
107
108	read = try fbs.reader().read(&dest);
109	try testing.expect(read == 0);
110
111	try fbs.seekTo((try fbs.getEndPos()) + 1);
112	read = try fbs.reader().read(&dest);
113	try testing.expect(read == 0);
114	}

lib/std/Io/test.zig-22

...	@@ -1,5 +1,4 @@	...	@@ -1,5 +1,4 @@
1	const std = @import("std");	1	const std = @import("std");
2	const io = std.io;
3	const DefaultPrng = std.Random.DefaultPrng;	2	const DefaultPrng = std.Random.DefaultPrng;
4	const expect = std.testing.expect;	3	const expect = std.testing.expect;
5	const expectEqual = std.testing.expectEqual;	4	const expectEqual = std.testing.expectEqual;
...	@@ -122,24 +121,3 @@ test "updateTimes" {	...	@@ -122,24 +121,3 @@ test "updateTimes" {
122	try expect(stat_new.atime < stat_old.atime);	121	try expect(stat_new.atime < stat_old.atime);
123	try expect(stat_new.mtime < stat_old.mtime);	122	try expect(stat_new.mtime < stat_old.mtime);
124	}	123	}
125
126	test "GenericReader methods can return error.EndOfStream" {
127	// https://github.com/ziglang/zig/issues/17733
128	var fbs = std.io.fixedBufferStream("");
129	try std.testing.expectError(
130	error.EndOfStream,
131	fbs.reader().readEnum(enum(u8) { a, b }, .little),
132	);
133	try std.testing.expectError(
134	error.EndOfStream,
135	fbs.reader().isBytes("foo"),
136	);
137	}
138
139	test "Adapted DeprecatedReader EndOfStream" {
140	var fbs: io.FixedBufferStream([]const u8) = .{ .buffer = &.{}, .pos = 0 };
141	const reader = fbs.reader();
142	var buf: [1]u8 = undefined;
143	var adapted = reader.adaptToNewApi(&buf);
144	try std.testing.expectError(error.EndOfStream, adapted.new_interface.takeByte());
145	}

lib/std/Io/tty.zig+2-2

...	@@ -76,9 +76,9 @@ pub const Config = union(enum) {	...	@@ -76,9 +76,9 @@ pub const Config = union(enum) {
76	reset_attributes: u16,	76	reset_attributes: u16,
77	};	77	};
78		78
79	pub const SetColorError = std.os.windows.SetConsoleTextAttributeError \|\| std.io.Writer.Error;	79	pub const SetColorError = std.os.windows.SetConsoleTextAttributeError \|\| std.Io.Writer.Error;
80		80
81	pub fn setColor(conf: Config, w: *std.io.Writer, color: Color) SetColorError!void {	81	pub fn setColor(conf: Config, w: *std.Io.Writer, color: Color) SetColorError!void {
82	nosuspend switch (conf) {	82	nosuspend switch (conf) {
83	.no_color => return,	83	.no_color => return,
84	.escape_codes => {	84	.escape_codes => {

lib/std/Progress.zig+1-1

...	@@ -9,7 +9,7 @@ const Progress = @This();	...	@@ -9,7 +9,7 @@ const Progress = @This();
9	const posix = std.posix;	9	const posix = std.posix;
10	const is_big_endian = builtin.cpu.arch.endian() == .big;	10	const is_big_endian = builtin.cpu.arch.endian() == .big;
11	const is_windows = builtin.os.tag == .windows;	11	const is_windows = builtin.os.tag == .windows;
12	const Writer = std.io.Writer;	12	const Writer = std.Io.Writer;
13		13
14	/// `null` if the current node (and its children) should	14	/// `null` if the current node (and its children) should
15	/// not print on update()	15	/// not print on update()

lib/std/SemanticVersion.zig+1-1

...	@@ -150,7 +150,7 @@ fn parseNum(text: []const u8) error{ InvalidVersion, Overflow }!usize {	...	@@ -150,7 +150,7 @@ fn parseNum(text: []const u8) error{ InvalidVersion, Overflow }!usize {
150	};	150	};
151	}	151	}
152		152
153	pub fn format(self: Version, w: *std.io.Writer) std.io.Writer.Error!void {	153	pub fn format(self: Version, w: *std.Io.Writer) std.Io.Writer.Error!void {
154	try w.print("{d}.{d}.{d}", .{ self.major, self.minor, self.patch });	154	try w.print("{d}.{d}.{d}", .{ self.major, self.minor, self.patch });
155	if (self.pre) \|pre\| try w.print("-{s}", .{pre});	155	if (self.pre) \|pre\| try w.print("-{s}", .{pre});
156	if (self.build) \|build\| try w.print("+{s}", .{build});	156	if (self.build) \|build\| try w.print("+{s}", .{build});

lib/std/Target.zig+1-1

...	@@ -311,7 +311,7 @@ pub const Os = struct {	...	@@ -311,7 +311,7 @@ pub const Os = struct {
311		311
312	/// This function is defined to serialize a Zig source code representation of this	312	/// This function is defined to serialize a Zig source code representation of this
313	/// type, that, when parsed, will deserialize into the same data.	313	/// type, that, when parsed, will deserialize into the same data.
314	pub fn format(wv: WindowsVersion, w: *std.io.Writer) std.io.Writer.Error!void {	314	pub fn format(wv: WindowsVersion, w: *std.Io.Writer) std.Io.Writer.Error!void {
315	if (std.enums.tagName(WindowsVersion, wv)) \|name\| {	315	if (std.enums.tagName(WindowsVersion, wv)) \|name\| {
316	var vecs: [2][]const u8 = .{ ".", name };	316	var vecs: [2][]const u8 = .{ ".", name };
317	return w.writeVecAll(&vecs);	317	return w.writeVecAll(&vecs);

lib/std/Thread.zig+4-2

...	@@ -280,8 +280,10 @@ pub fn getName(self: Thread, buffer_ptr: *[max_name_len:0]u8) GetNameError!?[]co	...	@@ -280,8 +280,10 @@ pub fn getName(self: Thread, buffer_ptr: *[max_name_len:0]u8) GetNameError!?[]co
280	const file = try std.fs.cwd().openFile(path, .{});	280	const file = try std.fs.cwd().openFile(path, .{});
281	defer file.close();	281	defer file.close();
282		282
283	const data_len = try file.deprecatedReader().readAll(buffer_ptr[0 .. max_name_len + 1]);	283	var file_reader = file.readerStreaming(&.{});
284		284	const data_len = file_reader.interface.readSliceShort(buffer_ptr[0 .. max_name_len + 1]) catch \|err\| switch (err) {
		285	error.ReadFailed => return file_reader.err.?,
		286	};
285	return if (data_len >= 1) buffer[0 .. data_len - 1] else null;	287	return if (data_len >= 1) buffer[0 .. data_len - 1] else null;
286	},	288	},
287	.windows => {	289	.windows => {

lib/std/array_list.zig+6-4

 @@ -405,6 +405,7 @@ pub fn AlignedManaged(comptime T: type, comptime alignment: ?mem.Alignment) type
                 return;
             }
+            // Protects growing unnecessarily since better_capacity will be larger.
             if (self.capacity >= new_capacity) return;
             const better_capacity = Aligned(T, alignment).growCapacity(self.capacity, new_capacity);
 @@ -664,9 +665,10 @@ pub fn Aligned(comptime T: type, comptime alignment: ?mem.Alignment) type {
         /// The caller owns the returned memory. ArrayList becomes empty.
         pub fn toOwnedSliceSentinel(self: *Self, gpa: Allocator, comptime sentinel: T) Allocator.Error!SentinelSlice(sentinel) {
-            // This addition can never overflow because `self.items` can never occupy the whole address space
+            // This addition can never overflow because `self.items` can never occupy the whole address space.
             try self.ensureTotalCapacityPrecise(gpa, self.items.len + 1);
             self.appendAssumeCapacity(sentinel);
+            errdefer self.items.len -= 1;
             const result = try self.toOwnedSlice(gpa);
             return result[0 .. result.len - 1 :sentinel];
         }
 @@ -1038,14 +1040,14 @@ pub fn Aligned(comptime T: type, comptime alignment: ?mem.Alignment) type {
         pub fn printAssumeCapacity(self: *Self, comptime fmt: []const u8, args: anytype) void {
             comptime assert(T == u8);
-            var w: std.io.Writer = .fixed(self.unusedCapacitySlice());
+            var w: std.Io.Writer = .fixed(self.unusedCapacitySlice());
             w.print(fmt, args) catch unreachable;
             self.items.len += w.end;
         }
         pub fn printBounded(self: *Self, comptime fmt: []const u8, args: anytype) error{OutOfMemory}!void {
             comptime assert(T == u8);
-            var w: std.io.Writer = .fixed(self.unusedCapacitySlice());
+            var w: std.Io.Writer = .fixed(self.unusedCapacitySlice());
             w.print(fmt, args) catch return error.OutOfMemory;
             self.items.len += w.end;
         }
 @@ -1361,7 +1363,7 @@ pub fn Aligned(comptime T: type, comptime alignment: ?mem.Alignment) type {
         /// Called when memory growth is necessary. Returns a capacity larger than
         /// minimum that grows super-linearly.
-        fn growCapacity(current: usize, minimum: usize) usize {
+        pub fn growCapacity(current: usize, minimum: usize) usize {
             var new = current;
             while (true) {
                 new +|= new / 2 + init_capacity;

lib/std/ascii.zig+1-1

...	@@ -444,7 +444,7 @@ pub const HexEscape = struct {	...	@@ -444,7 +444,7 @@ pub const HexEscape = struct {
444	pub const upper_charset = "0123456789ABCDEF";	444	pub const upper_charset = "0123456789ABCDEF";
445	pub const lower_charset = "0123456789abcdef";	445	pub const lower_charset = "0123456789abcdef";
446		446
447	pub fn format(se: HexEscape, w: *std.io.Writer) std.io.Writer.Error!void {	447	pub fn format(se: HexEscape, w: *std.Io.Writer) std.Io.Writer.Error!void {
448	const charset = se.charset;	448	const charset = se.charset;
449		449
450	var buf: [4]u8 = undefined;	450	var buf: [4]u8 = undefined;

lib/std/builtin.zig+2-2

...	@@ -38,7 +38,7 @@ pub const StackTrace = struct {	...	@@ -38,7 +38,7 @@ pub const StackTrace = struct {
38	index: usize,	38	index: usize,
39	instruction_addresses: []usize,	39	instruction_addresses: []usize,
40		40
41	pub fn format(self: StackTrace, writer: *std.io.Writer) std.io.Writer.Error!void {	41	pub fn format(self: StackTrace, writer: *std.Io.Writer) std.Io.Writer.Error!void {
42	// TODO: re-evaluate whether to use format() methods at all.	42	// TODO: re-evaluate whether to use format() methods at all.
43	// Until then, avoid an error when using GeneralPurposeAllocator with WebAssembly	43	// Until then, avoid an error when using GeneralPurposeAllocator with WebAssembly
44	// where it tries to call detectTTYConfig here.	44	// where it tries to call detectTTYConfig here.
...	@@ -47,7 +47,7 @@ pub const StackTrace = struct {	...	@@ -47,7 +47,7 @@ pub const StackTrace = struct {
47	const debug_info = std.debug.getSelfDebugInfo() catch \|err\| {	47	const debug_info = std.debug.getSelfDebugInfo() catch \|err\| {
48	return writer.print("\nUnable to print stack trace: Unable to open debug info: {s}\n", .{@errorName(err)});	48	return writer.print("\nUnable to print stack trace: Unable to open debug info: {s}\n", .{@errorName(err)});
49	};	49	};
50	const tty_config = std.io.tty.detectConfig(std.fs.File.stderr());	50	const tty_config = std.Io.tty.detectConfig(std.fs.File.stderr());
51	try writer.writeAll("\n");	51	try writer.writeAll("\n");
52	std.debug.writeStackTrace(self, writer, debug_info, tty_config) catch \|err\| {	52	std.debug.writeStackTrace(self, writer, debug_info, tty_config) catch \|err\| {
53	try writer.print("Unable to print stack trace: {s}\n", .{@errorName(err)});	53	try writer.print("Unable to print stack trace: {s}\n", .{@errorName(err)});

lib/std/coff.zig+15-20

 @@ -1087,14 +1087,11 @@ pub const Coff = struct {
         const pe_pointer_offset = 0x3C;
         const pe_magic = "PE\x00\x00";
-        var stream = std.io.fixedBufferStream(data);
+        var reader: std.Io.Reader = .fixed(data);
-        const reader = stream.reader();
+        reader.seek = pe_pointer_offset;
-        try stream.seekTo(pe_pointer_offset);
+        const coff_header_offset = try reader.takeInt(u32, .little);
-        const coff_header_offset = try reader.readInt(u32, .little);
+        reader.seek = coff_header_offset;
-        try stream.seekTo(coff_header_offset);
+        const is_image = mem.eql(u8, pe_magic, try reader.takeArray(4));
-        var buf: [4]u8 = undefined;
-        try reader.readNoEof(&buf);
-        const is_image = mem.eql(u8, pe_magic, &buf);
         var coff = @This(){
             .data = data,
 @@ -1123,16 +1120,15 @@ pub const Coff = struct {
         if (@intFromEnum(DirectoryEntry.DEBUG) >= data_dirs.len) return null;
         const debug_dir = data_dirs[@intFromEnum(DirectoryEntry.DEBUG)];
-        var stream = std.io.fixedBufferStream(self.data);
+        var reader: std.Io.Reader = .fixed(self.data);
-        const reader = stream.reader();
         if (self.is_loaded) {
-            try stream.seekTo(debug_dir.virtual_address);
+            reader.seek = debug_dir.virtual_address;
         } else {
             // Find what section the debug_dir is in, in order to convert the RVA to a file offset
             for (self.getSectionHeaders()) |*sect| {
                 if (debug_dir.virtual_address >= sect.virtual_address and debug_dir.virtual_address < sect.virtual_address + sect.virtual_size) {
-                    try stream.seekTo(sect.pointer_to_raw_data + (debug_dir.virtual_address - sect.virtual_address));
+                    reader.seek = sect.pointer_to_raw_data + (debug_dir.virtual_address - sect.virtual_address);
                     break;
                 }
             } else return error.InvalidDebugDirectory;
 @@ -1143,24 +1139,23 @@ pub const Coff = struct {
         const debug_dir_entry_count = debug_dir.size / @sizeOf(DebugDirectoryEntry);
         var i: u32 = 0;
         while (i < debug_dir_entry_count) : (i += 1) {
-            const debug_dir_entry = try reader.readStruct(DebugDirectoryEntry);
+            const debug_dir_entry = try reader.takeStruct(DebugDirectoryEntry, .little);
             if (debug_dir_entry.type == .CODEVIEW) {
                 const dir_offset = if (self.is_loaded) debug_dir_entry.address_of_raw_data else debug_dir_entry.pointer_to_raw_data;
-                try stream.seekTo(dir_offset);
+                reader.seek = dir_offset;
                 break;
             }
         } else return null;
-        var cv_signature: [4]u8 = undefined; // CodeView signature
+        const code_view_signature = try reader.takeArray(4);
-        try reader.readNoEof(cv_signature[0..]);
         // 'RSDS' indicates PDB70 format, used by lld.
-        if (!mem.eql(u8, &cv_signature, "RSDS"))
+        if (!mem.eql(u8, code_view_signature, "RSDS"))
             return error.InvalidPEMagic;
-        try reader.readNoEof(self.guid[0..]);
+        try reader.readSliceAll(self.guid[0..]);
-        self.age = try reader.readInt(u32, .little);
+        self.age = try reader.takeInt(u32, .little);
         // Finally read the null-terminated string.
-        const start = reader.context.pos;
+        const start = reader.seek;
         const len = std.mem.indexOfScalar(u8, self.data[start..], 0) orelse return null;
         return self.data[start .. start + len];
     }

lib/std/compress/flate/BlockWriter.zig+1-2

 @@ -1,9 +1,8 @@
 //! Accepts list of tokens, decides what is best block type to write. What block
 //! type will provide best compression. Writes header and body of the block.
 const std = @import("std");
-const io = std.io;
 const assert = std.debug.assert;
-const Writer = std.io.Writer;
+const Writer = std.Io.Writer;
 const BlockWriter = @This();
 const flate = @import("../flate.zig");

lib/std/compress/zstd/Decompress.zig+3-3

...	@@ -1,10 +1,10 @@	...	@@ -1,10 +1,10 @@
1	const Decompress = @This();	1	const Decompress = @This();
2	const std = @import("std");	2	const std = @import("std");
3	const assert = std.debug.assert;	3	const assert = std.debug.assert;
4	const Reader = std.io.Reader;	4	const Reader = std.Io.Reader;
5	const Limit = std.io.Limit;	5	const Limit = std.Io.Limit;
6	const zstd = @import("../zstd.zig");	6	const zstd = @import("../zstd.zig");
7	const Writer = std.io.Writer;	7	const Writer = std.Io.Writer;
8		8
9	input: *Reader,	9	input: *Reader,
10	reader: Reader,	10	reader: Reader,

lib/std/crypto/Certificate/Bundle/macos.zig+50-45

...	@@ -11,76 +11,81 @@ pub fn rescanMac(cb: *Bundle, gpa: Allocator) RescanMacError!void {	...	@@ -11,76 +11,81 @@ pub fn rescanMac(cb: *Bundle, gpa: Allocator) RescanMacError!void {
11	cb.bytes.clearRetainingCapacity();	11	cb.bytes.clearRetainingCapacity();
12	cb.map.clearRetainingCapacity();	12	cb.map.clearRetainingCapacity();
13		13
14	const keychainPaths = [2][]const u8{	14	const keychain_paths = [2][]const u8{
15	"/System/Library/Keychains/SystemRootCertificates.keychain",	15	"/System/Library/Keychains/SystemRootCertificates.keychain",
16	"/Library/Keychains/System.keychain",	16	"/Library/Keychains/System.keychain",
17	};	17	};
18		18
19	for (keychainPaths) \|keychainPath\| {	19	for (keychain_paths) \|keychain_path\| {
20	const file = try fs.openFileAbsolute(keychainPath, .{});	20	const bytes = std.fs.cwd().readFileAlloc(keychain_path, gpa, .limited(std.math.maxInt(u32))) catch \|err\| switch (err) {
21	defer file.close();	21	error.StreamTooLong => return error.FileTooBig,
22		22	else => \|e\| return e,
23	const bytes = try file.readToEndAlloc(gpa, std.math.maxInt(u32));	23	};
24	defer gpa.free(bytes);	24	defer gpa.free(bytes);
25		25
26	var stream = std.io.fixedBufferStream(bytes);	26	var reader: std.Io.Reader = .fixed(bytes);
27	const reader = stream.reader();	27	scanReader(cb, gpa, &reader) catch \|err\| switch (err) {
		28	error.ReadFailed => unreachable, // prebuffered
		29	else => \|e\| return e,
		30	};
		31	}
28		32
29	const db_header = try reader.readStructEndian(ApplDbHeader, .big);	33	cb.bytes.shrinkAndFree(gpa, cb.bytes.items.len);
30	assert(mem.eql(u8, &db_header.signature, "kych"));	34	}
31		35
32	try stream.seekTo(db_header.schema_offset);	36	fn scanReader(cb: Bundle, gpa: Allocator, reader: std.Io.Reader) !void {
		37	const db_header = try reader.takeStruct(ApplDbHeader, .big);
		38	assert(mem.eql(u8, &db_header.signature, "kych"));
33		39
34	const db_schema = try reader.readStructEndian(ApplDbSchema, .big);	40	reader.seek = db_header.schema_offset;
35		41
36	var table_list = try gpa.alloc(u32, db_schema.table_count);	42	const db_schema = try reader.takeStruct(ApplDbSchema, .big);
37	defer gpa.free(table_list);
38		43
39	var table_idx: u32 = 0;	44	var table_list = try gpa.alloc(u32, db_schema.table_count);
40	while (table_idx < table_list.len) : (table_idx += 1) {	45	defer gpa.free(table_list);
41	table_list[table_idx] = try reader.readInt(u32, .big);
42	}
43		46
44	const now_sec = std.time.timestamp();	47	var table_idx: u32 = 0;
		48	while (table_idx < table_list.len) : (table_idx += 1) {
		49	table_list[table_idx] = try reader.takeInt(u32, .big);
		50	}
45		51
46	for (table_list) \|table_offset\| {	52	const now_sec = std.time.timestamp();
47	try stream.seekTo(db_header.schema_offset + table_offset);
48		53
49	const table_header = try reader.readStructEndian(TableHeader, .big);	54	for (table_list) \|table_offset\| {
		55	reader.seek = db_header.schema_offset + table_offset;
50		56
51	if (@as(std.c.DB_RECORDTYPE, @enumFromInt(table_header.table_id)) != .X509_CERTIFICATE) {	57	const table_header = try reader.takeStruct(TableHeader, .big);
52	continue;
53	}
54		58
55	var record_list = try gpa.alloc(u32, table_header.record_count);	59	if (@as(std.c.DB_RECORDTYPE, @enumFromInt(table_header.table_id)) != .X509_CERTIFICATE) {
56	defer gpa.free(record_list);	60	continue;
		61	}
		62
		63	var record_list = try gpa.alloc(u32, table_header.record_count);
		64	defer gpa.free(record_list);
57		65
58	var record_idx: u32 = 0;	66	var record_idx: u32 = 0;
59	while (record_idx < record_list.len) : (record_idx += 1) {	67	while (record_idx < record_list.len) : (record_idx += 1) {
60	record_list[record_idx] = try reader.readInt(u32, .big);	68	record_list[record_idx] = try reader.takeInt(u32, .big);
61	}	69	}
62		70
63	for (record_list) \|record_offset\| {	71	for (record_list) \|record_offset\| {
64	// An offset of zero means that the record is not present.	72	// An offset of zero means that the record is not present.
65	// An offset that is not 4-byte-aligned is invalid.	73	// An offset that is not 4-byte-aligned is invalid.
66	if (record_offset == 0 or record_offset % 4 != 0) continue;	74	if (record_offset == 0 or record_offset % 4 != 0) continue;
67		75
68	try stream.seekTo(db_header.schema_offset + table_offset + record_offset);	76	reader.seek = db_header.schema_offset + table_offset + record_offset;
69		77
70	const cert_header = try reader.readStructEndian(X509CertHeader, .big);	78	const cert_header = try reader.takeStruct(X509CertHeader, .big);
71		79
72	if (cert_header.cert_size == 0) continue;	80	if (cert_header.cert_size == 0) continue;
73		81
74	const cert_start = @as(u32, @intCast(cb.bytes.items.len));	82	const cert_start: u32 = @intCast(cb.bytes.items.len);
75	const dest_buf = try cb.bytes.addManyAsSlice(gpa, cert_header.cert_size);	83	const dest_buf = try cb.bytes.addManyAsSlice(gpa, cert_header.cert_size);
76	try reader.readNoEof(dest_buf);	84	try reader.readSliceAll(dest_buf);
77		85
78	try cb.parseCert(gpa, cert_start, now_sec);	86	try cb.parseCert(gpa, cert_start, now_sec);
79	}
80	}	87	}
81	}	88	}
82
83	cb.bytes.shrinkAndFree(gpa, cb.bytes.items.len);
84	}	89	}
85		90
86	const ApplDbHeader = extern struct {	91	const ApplDbHeader = extern struct {

lib/std/crypto/codecs/asn1.zig+13-15

 @@ -69,15 +69,15 @@ pub const Tag = struct {
         return .{ .number = number, .constructed = constructed, .class = .universal };
     }
-    pub fn decode(reader: anytype) !Tag {
+    pub fn decode(reader: *std.Io.Reader) !Tag {
-        const tag1: FirstTag = @bitCast(try reader.readByte());
+        const tag1: FirstTag = @bitCast(try reader.takeByte());
         var number: u14 = tag1.number;
         if (tag1.number == 15) {
-            const tag2: NextTag = @bitCast(try reader.readByte());
+            const tag2: NextTag = @bitCast(try reader.takeByte());
             number = tag2.number;
             if (tag2.continues) {
-                const tag3: NextTag = @bitCast(try reader.readByte());
+                const tag3: NextTag = @bitCast(try reader.takeByte());
                 number = (number << 7) + tag3.number;
                 if (tag3.continues) return error.InvalidLength;
             }
 @@ -90,7 +90,7 @@ pub const Tag = struct {
         };
     }
-    pub fn encode(self: Tag, writer: anytype) @TypeOf(writer).Error!void {
+    pub fn encode(self: Tag, writer: *std.Io.Writer) @TypeOf(writer).Error!void {
         var tag1 = FirstTag{
             .number = undefined,
             .constructed = self.constructed,
 @@ -98,8 +98,7 @@ pub const Tag = struct {
         };
         var buffer: [3]u8 = undefined;
-        var stream = std.io.fixedBufferStream(&buffer);
+        var writer2: std.Io.Writer = .init(&buffer);
-        var writer2 = stream.writer();
         switch (@intFromEnum(self.number)) {
             0...std.math.maxInt(u5) => |n| {
 @@ -122,7 +121,7 @@ pub const Tag = struct {
             },
         }
-        _ = try writer.write(stream.getWritten());
+        _ = try writer.write(writer2.buffered());
     }
     const FirstTag = packed struct(u8) { number: u5, constructed: bool, class: Tag.Class };
 @@ -161,8 +160,8 @@ pub const Tag = struct {
 test Tag {
     const buf = [_]u8{0xa3};
-    var stream = std.io.fixedBufferStream(&buf);
+    var reader: std.Io.Reader = .fixed(&buf);
-    const t = Tag.decode(stream.reader());
+    const t = Tag.decode(&reader);
     try std.testing.expectEqual(Tag.init(@enumFromInt(3), true, .context_specific), t);
 }
 @@ -191,11 +190,10 @@ pub const Element = struct {
     /// - Ensures length is within `bytes`
     /// - Ensures length is less than `std.math.maxInt(Index)`
     pub fn decode(bytes: []const u8, index: Index) DecodeError!Element {
-        var stream = std.io.fixedBufferStream(bytes[index..]);
+        var reader: std.Io.Reader = .fixed(bytes[index..]);
-        var reader = stream.reader();
-        const tag = try Tag.decode(reader);
+        const tag = try Tag.decode(&reader);
-        const size_or_len_size = try reader.readByte();
+        const size_or_len_size = try reader.takeByte();
         var start = index + 2;
         var end = start + size_or_len_size;
 @@ -208,7 +206,7 @@ pub const Element = struct {
             start += len_size;
             if (len_size > @sizeOf(Index)) return error.InvalidLength;
-            const len = try reader.readVarInt(Index, .big, len_size);
+            const len = try reader.takeVarInt(Index, .big, len_size);
             if (len < 128) return error.InvalidLength; // should have used short form
             end = std.math.add(Index, start, len) catch return error.InvalidLength;

lib/std/crypto/codecs/asn1/Oid.zig+6-7

...	@@ -4,7 +4,7 @@	...	@@ -4,7 +4,7 @@
4	//! organizations, or policy documents.	4	//! organizations, or policy documents.
5	encoded: []const u8,	5	encoded: []const u8,
6		6
7	pub const InitError = std.fmt.ParseIntError \|\| error{MissingPrefix} \|\| std.io.FixedBufferStream(u8).WriteError;	7	pub const InitError = std.fmt.ParseIntError \|\| error{MissingPrefix} \|\| std.Io.Writer.Error;
8		8
9	pub fn fromDot(dot_notation: []const u8, out: []u8) InitError!Oid {	9	pub fn fromDot(dot_notation: []const u8, out: []u8) InitError!Oid {
10	var split = std.mem.splitScalar(u8, dot_notation, '.');	10	var split = std.mem.splitScalar(u8, dot_notation, '.');
...	@@ -14,8 +14,7 @@ pub fn fromDot(dot_notation: []const u8, out: []u8) InitError!Oid {	...	@@ -14,8 +14,7 @@ pub fn fromDot(dot_notation: []const u8, out: []u8) InitError!Oid {
14	const first = try std.fmt.parseInt(u8, first_str, 10);	14	const first = try std.fmt.parseInt(u8, first_str, 10);
15	const second = try std.fmt.parseInt(u8, second_str, 10);	15	const second = try std.fmt.parseInt(u8, second_str, 10);
16		16
17	var stream = std.io.fixedBufferStream(out);	17	var writer: std.Io.Writer = .fixed(out);
18	var writer = stream.writer();
19		18
20	try writer.writeByte(first * 40 + second);	19	try writer.writeByte(first * 40 + second);
21		20
...	@@ -37,7 +36,7 @@ pub fn fromDot(dot_notation: []const u8, out: []u8) InitError!Oid {	...	@@ -37,7 +36,7 @@ pub fn fromDot(dot_notation: []const u8, out: []u8) InitError!Oid {
37	i += 1;	36	i += 1;
38	}	37	}
39		38
40	return .{ .encoded = stream.getWritten() };	39	return .{ .encoded = writer.buffered() };
41	}	40	}
42		41
43	test fromDot {	42	test fromDot {
...	@@ -80,9 +79,9 @@ test toDot {	...	@@ -80,9 +79,9 @@ test toDot {
80	var buf: [256]u8 = undefined;	79	var buf: [256]u8 = undefined;
81		80
82	for (test_cases) \|t\| {	81	for (test_cases) \|t\| {
83	var stream = std.io.fixedBufferStream(&buf);	82	var stream: std.Io.Writer = .fixed(&buf);
84	try toDot(Oid{ .encoded = t.encoded }, stream.writer());	83	try toDot(Oid{ .encoded = t.encoded }, &stream);
85	try std.testing.expectEqualStrings(t.dot_notation, stream.getWritten());	84	try std.testing.expectEqualStrings(t.dot_notation, stream.written());
86	}	85	}
87	}	86	}
88		87

lib/std/crypto/ecdsa.zig+12-17

 @@ -2,7 +2,6 @@ const builtin = @import("builtin");
 const std = @import("std");
 const crypto = std.crypto;
 const fmt = std.fmt;
-const io = std.io;
 const mem = std.mem;
 const sha3 = crypto.hash.sha3;
 const testing = std.testing;
 @@ -135,8 +134,7 @@ pub fn Ecdsa(comptime Curve: type, comptime Hash: type) type {
             /// The maximum length of the DER encoding is der_encoded_length_max.
             /// The function returns a slice, that can be shorter than der_encoded_length_max.
             pub fn toDer(sig: Signature, buf: *[der_encoded_length_max]u8) []u8 {
-                var fb = io.fixedBufferStream(buf);
+                var w: std.Io.Writer = .fixed(buf);
-                const w = fb.writer();
                 const r_len = @as(u8, @intCast(sig.r.len + (sig.r[0] >> 7)));
                 const s_len = @as(u8, @intCast(sig.s.len + (sig.s[0] >> 7)));
                 const seq_len = @as(u8, @intCast(2 + r_len + 2 + s_len));
 @@ -151,24 +149,23 @@ pub fn Ecdsa(comptime Curve: type, comptime Hash: type) type {
                     w.writeByte(0x00) catch unreachable;
                 }
                 w.writeAll(&sig.s) catch unreachable;
-                return fb.getWritten();
+                return w.buffered();
             }
             // Read a DER-encoded integer.
-            fn readDerInt(out: []u8, reader: anytype) EncodingError!void {
+            fn readDerInt(out: []u8, reader: *std.Io.Reader) EncodingError!void {
-                var buf: [2]u8 = undefined;
+                const buf = reader.takeArray(2) catch return error.InvalidEncoding;
-                _ = reader.readNoEof(&buf) catch return error.InvalidEncoding;
                 if (buf[0] != 0x02) return error.InvalidEncoding;
-                var expected_len = @as(usize, buf[1]);
+                var expected_len: usize = buf[1];
                 if (expected_len == 0 or expected_len > 1 + out.len) return error.InvalidEncoding;
                 var has_top_bit = false;
                 if (expected_len == 1 + out.len) {
-                    if ((reader.readByte() catch return error.InvalidEncoding) != 0) return error.InvalidEncoding;
+                    if ((reader.takeByte() catch return error.InvalidEncoding) != 0) return error.InvalidEncoding;
                     expected_len -= 1;
                     has_top_bit = true;
                 }
                 const out_slice = out[out.len - expected_len ..];
-                reader.readNoEof(out_slice) catch return error.InvalidEncoding;
+                reader.readSliceAll(out_slice) catch return error.InvalidEncoding;
                 if (@intFromBool(has_top_bit) != out[0] >> 7) return error.InvalidEncoding;
             }
 @@ -176,16 +173,14 @@ pub fn Ecdsa(comptime Curve: type, comptime Hash: type) type {
             /// Returns InvalidEncoding if the DER encoding is invalid.
             pub fn fromDer(der: []const u8) EncodingError!Signature {
                 var sig: Signature = mem.zeroInit(Signature, .{});
-                var fb = io.fixedBufferStream(der);
+                var reader: std.Io.Reader = .fixed(der);
-                const reader = fb.reader();
+                const buf = reader.takeArray(2) catch return error.InvalidEncoding;
-                var buf: [2]u8 = undefined;
-                _ = reader.readNoEof(&buf) catch return error.InvalidEncoding;
                 if (buf[0] != 0x30 or @as(usize, buf[1]) + 2 != der.len) {
                     return error.InvalidEncoding;
                 }
-                try readDerInt(&sig.r, reader);
+                try readDerInt(&sig.r, &reader);
-                try readDerInt(&sig.s, reader);
+                try readDerInt(&sig.s, &reader);
-                if (fb.getPos() catch unreachable != der.len) return error.InvalidEncoding;
+                if (reader.seek != der.len) return error.InvalidEncoding;
                 return sig;
             }

lib/std/crypto/phc_encoding.zig-1

...	@@ -2,7 +2,6 @@	...	@@ -2,7 +2,6 @@
2		2
3	const std = @import("std");	3	const std = @import("std");
4	const fmt = std.fmt;	4	const fmt = std.fmt;
5	const io = std.io;
6	const mem = std.mem;	5	const mem = std.mem;
7	const meta = std.meta;	6	const meta = std.meta;
8	const Writer = std.Io.Writer;	7	const Writer = std.Io.Writer;

lib/std/crypto/scrypt.zig-1

...	@@ -5,7 +5,6 @@	...	@@ -5,7 +5,6 @@
5	const std = @import("std");	5	const std = @import("std");
6	const crypto = std.crypto;	6	const crypto = std.crypto;
7	const fmt = std.fmt;	7	const fmt = std.fmt;
8	const io = std.io;
9	const math = std.math;	8	const math = std.math;
10	const mem = std.mem;	9	const mem = std.mem;
11	const meta = std.meta;	10	const meta = std.meta;

lib/std/crypto/tls.zig+2-2

...	@@ -655,7 +655,7 @@ pub const Decoder = struct {	...	@@ -655,7 +655,7 @@ pub const Decoder = struct {
655	}	655	}
656		656
657	/// Use this function to increase `their_end`.	657	/// Use this function to increase `their_end`.
658	pub fn readAtLeast(d: Decoder, stream: std.io.Reader, their_amt: usize) !void {	658	pub fn readAtLeast(d: Decoder, stream: std.Io.Reader, their_amt: usize) !void {
659	assert(!d.disable_reads);	659	assert(!d.disable_reads);
660	const existing_amt = d.cap - d.idx;	660	const existing_amt = d.cap - d.idx;
661	d.their_end = d.idx + their_amt;	661	d.their_end = d.idx + their_amt;
...	@@ -672,7 +672,7 @@ pub const Decoder = struct {	...	@@ -672,7 +672,7 @@ pub const Decoder = struct {
672		672
673	/// Same as `readAtLeast` but also increases `our_end` by exactly `our_amt`.	673	/// Same as `readAtLeast` but also increases `our_end` by exactly `our_amt`.
674	/// Use when `our_amt` is calculated by us, not by them.	674	/// Use when `our_amt` is calculated by us, not by them.
675	pub fn readAtLeastOurAmt(d: Decoder, stream: std.io.Reader, our_amt: usize) !void {	675	pub fn readAtLeastOurAmt(d: Decoder, stream: std.Io.Reader, our_amt: usize) !void {
676	assert(!d.disable_reads);	676	assert(!d.disable_reads);
677	try readAtLeast(d, stream, our_amt);	677	try readAtLeast(d, stream, our_amt);
678	d.our_end = d.idx + our_amt;	678	d.our_end = d.idx + our_amt;

lib/std/debug.zig+19-19

...	@@ -2,7 +2,6 @@ const builtin = @import("builtin");	...	@@ -2,7 +2,6 @@ const builtin = @import("builtin");
2	const std = @import("std.zig");	2	const std = @import("std.zig");
3	const math = std.math;	3	const math = std.math;
4	const mem = std.mem;	4	const mem = std.mem;
5	const io = std.io;
6	const posix = std.posix;	5	const posix = std.posix;
7	const fs = std.fs;	6	const fs = std.fs;
8	const testing = std.testing;	7	const testing = std.testing;
...	@@ -12,7 +11,8 @@ const windows = std.os.windows;	...	@@ -12,7 +11,8 @@ const windows = std.os.windows;
12	const native_arch = builtin.cpu.arch;	11	const native_arch = builtin.cpu.arch;
13	const native_os = builtin.os.tag;	12	const native_os = builtin.os.tag;
14	const native_endian = native_arch.endian();	13	const native_endian = native_arch.endian();
15	const Writer = std.io.Writer;	14	const Writer = std.Io.Writer;
		15	const tty = std.Io.tty;
16		16
17	pub const Dwarf = @import("debug/Dwarf.zig");	17	pub const Dwarf = @import("debug/Dwarf.zig");
18	pub const Pdb = @import("debug/Pdb.zig");	18	pub const Pdb = @import("debug/Pdb.zig");
...	@@ -246,12 +246,12 @@ pub fn getSelfDebugInfo() !*SelfInfo {	...	@@ -246,12 +246,12 @@ pub fn getSelfDebugInfo() !*SelfInfo {
246	pub fn dumpHex(bytes: []const u8) void {	246	pub fn dumpHex(bytes: []const u8) void {
247	const bw = lockStderrWriter(&.{});	247	const bw = lockStderrWriter(&.{});
248	defer unlockStderrWriter();	248	defer unlockStderrWriter();
249	const ttyconf = std.io.tty.detectConfig(.stderr());	249	const ttyconf = tty.detectConfig(.stderr());
250	dumpHexFallible(bw, ttyconf, bytes) catch {};	250	dumpHexFallible(bw, ttyconf, bytes) catch {};
251	}	251	}
252		252
253	/// Prints a hexadecimal view of the bytes, returning any error that occurs.	253	/// Prints a hexadecimal view of the bytes, returning any error that occurs.
254	pub fn dumpHexFallible(bw: *Writer, ttyconf: std.io.tty.Config, bytes: []const u8) !void {	254	pub fn dumpHexFallible(bw: *Writer, ttyconf: tty.Config, bytes: []const u8) !void {
255	var chunks = mem.window(u8, bytes, 16, 16);	255	var chunks = mem.window(u8, bytes, 16, 16);
256	while (chunks.next()) \|window\| {	256	while (chunks.next()) \|window\| {
257	// 1. Print the address.	257	// 1. Print the address.
...	@@ -302,7 +302,7 @@ pub fn dumpHexFallible(bw: *Writer, ttyconf: std.io.tty.Config, bytes: []const u	...	@@ -302,7 +302,7 @@ pub fn dumpHexFallible(bw: *Writer, ttyconf: std.io.tty.Config, bytes: []const u
302		302
303	test dumpHexFallible {	303	test dumpHexFallible {
304	const bytes: []const u8 = &.{ 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x01, 0x12, 0x13 };	304	const bytes: []const u8 = &.{ 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x01, 0x12, 0x13 };
305	var aw: std.io.Writer.Allocating = .init(std.testing.allocator);	305	var aw: Writer.Allocating = .init(std.testing.allocator);
306	defer aw.deinit();	306	defer aw.deinit();
307		307
308	try dumpHexFallible(&aw.writer, .no_color, bytes);	308	try dumpHexFallible(&aw.writer, .no_color, bytes);
...	@@ -342,7 +342,7 @@ pub fn dumpCurrentStackTraceToWriter(start_addr: ?usize, writer: *Writer) !void	...	@@ -342,7 +342,7 @@ pub fn dumpCurrentStackTraceToWriter(start_addr: ?usize, writer: *Writer) !void
342	try writer.print("Unable to dump stack trace: Unable to open debug info: {s}\n", .{@errorName(err)});	342	try writer.print("Unable to dump stack trace: Unable to open debug info: {s}\n", .{@errorName(err)});
343	return;	343	return;
344	};	344	};
345	writeCurrentStackTrace(writer, debug_info, io.tty.detectConfig(.stderr()), start_addr) catch \|err\| {	345	writeCurrentStackTrace(writer, debug_info, tty.detectConfig(.stderr()), start_addr) catch \|err\| {
346	try writer.print("Unable to dump stack trace: {s}\n", .{@errorName(err)});	346	try writer.print("Unable to dump stack trace: {s}\n", .{@errorName(err)});
347	return;	347	return;
348	};	348	};
...	@@ -427,7 +427,7 @@ pub fn dumpStackTraceFromBase(context: ThreadContext, stderr: Writer) void {	...	@@ -427,7 +427,7 @@ pub fn dumpStackTraceFromBase(context: ThreadContext, stderr: Writer) void {
427	stderr.print("Unable to dump stack trace: Unable to open debug info: {s}\n", .{@errorName(err)}) catch return;	427	stderr.print("Unable to dump stack trace: Unable to open debug info: {s}\n", .{@errorName(err)}) catch return;
428	return;	428	return;
429	};	429	};
430	const tty_config = io.tty.detectConfig(.stderr());	430	const tty_config = tty.detectConfig(.stderr());
431	if (native_os == .windows) {	431	if (native_os == .windows) {
432	// On x86_64 and aarch64, the stack will be unwound using RtlVirtualUnwind using the context	432	// On x86_64 and aarch64, the stack will be unwound using RtlVirtualUnwind using the context
433	// provided by the exception handler. On x86, RtlVirtualUnwind doesn't exist. Instead, a new backtrace	433	// provided by the exception handler. On x86, RtlVirtualUnwind doesn't exist. Instead, a new backtrace
...	@@ -533,7 +533,7 @@ pub fn dumpStackTrace(stack_trace: std.builtin.StackTrace) void {	...	@@ -533,7 +533,7 @@ pub fn dumpStackTrace(stack_trace: std.builtin.StackTrace) void {
533	stderr.print("Unable to dump stack trace: Unable to open debug info: {s}\n", .{@errorName(err)}) catch return;	533	stderr.print("Unable to dump stack trace: Unable to open debug info: {s}\n", .{@errorName(err)}) catch return;
534	return;	534	return;
535	};	535	};
536	writeStackTrace(stack_trace, stderr, debug_info, io.tty.detectConfig(.stderr())) catch \|err\| {	536	writeStackTrace(stack_trace, stderr, debug_info, tty.detectConfig(.stderr())) catch \|err\| {
537	stderr.print("Unable to dump stack trace: {s}\n", .{@errorName(err)}) catch return;	537	stderr.print("Unable to dump stack trace: {s}\n", .{@errorName(err)}) catch return;
538	return;	538	return;
539	};	539	};
...	@@ -738,7 +738,7 @@ pub fn writeStackTrace(	...	@@ -738,7 +738,7 @@ pub fn writeStackTrace(
738	stack_trace: std.builtin.StackTrace,	738	stack_trace: std.builtin.StackTrace,
739	writer: *Writer,	739	writer: *Writer,
740	debug_info: *SelfInfo,	740	debug_info: *SelfInfo,
741	tty_config: io.tty.Config,	741	tty_config: tty.Config,
742	) !void {	742	) !void {
743	if (builtin.strip_debug_info) return error.MissingDebugInfo;	743	if (builtin.strip_debug_info) return error.MissingDebugInfo;
744	var frame_index: usize = 0;	744	var frame_index: usize = 0;
...	@@ -959,7 +959,7 @@ pub const StackIterator = struct {	...	@@ -959,7 +959,7 @@ pub const StackIterator = struct {
959	pub fn writeCurrentStackTrace(	959	pub fn writeCurrentStackTrace(
960	writer: *Writer,	960	writer: *Writer,
961	debug_info: *SelfInfo,	961	debug_info: *SelfInfo,
962	tty_config: io.tty.Config,	962	tty_config: tty.Config,
963	start_addr: ?usize,	963	start_addr: ?usize,
964	) !void {	964	) !void {
965	if (native_os == .windows) {	965	if (native_os == .windows) {
...	@@ -1047,7 +1047,7 @@ pub noinline fn walkStackWindows(addresses: []usize, existing_context: ?*const w	...	@@ -1047,7 +1047,7 @@ pub noinline fn walkStackWindows(addresses: []usize, existing_context: ?*const w
1047	pub fn writeStackTraceWindows(	1047	pub fn writeStackTraceWindows(
1048	writer: *Writer,	1048	writer: *Writer,
1049	debug_info: *SelfInfo,	1049	debug_info: *SelfInfo,
1050	tty_config: io.tty.Config,	1050	tty_config: tty.Config,
1051	context: *const windows.CONTEXT,	1051	context: *const windows.CONTEXT,
1052	start_addr: ?usize,	1052	start_addr: ?usize,
1053	) !void {	1053	) !void {
...	@@ -1065,7 +1065,7 @@ pub fn writeStackTraceWindows(	...	@@ -1065,7 +1065,7 @@ pub fn writeStackTraceWindows(
1065	}	1065	}
1066	}	1066	}
1067		1067
1068	fn printUnknownSource(debug_info: SelfInfo, writer: Writer, address: usize, tty_config: io.tty.Config) !void {	1068	fn printUnknownSource(debug_info: SelfInfo, writer: Writer, address: usize, tty_config: tty.Config) !void {
1069	const module_name = debug_info.getModuleNameForAddress(address);	1069	const module_name = debug_info.getModuleNameForAddress(address);
1070	return printLineInfo(	1070	return printLineInfo(
1071	writer,	1071	writer,
...	@@ -1078,14 +1078,14 @@ fn printUnknownSource(debug_info: SelfInfo, writer: Writer, address: usize, tt	...	@@ -1078,14 +1078,14 @@ fn printUnknownSource(debug_info: SelfInfo, writer: Writer, address: usize, tt
1078	);	1078	);
1079	}	1079	}
1080		1080
1081	fn printLastUnwindError(it: StackIterator, debug_info: SelfInfo, writer: *Writer, tty_config: io.tty.Config) void {	1081	fn printLastUnwindError(it: StackIterator, debug_info: SelfInfo, writer: *Writer, tty_config: tty.Config) void {
1082	if (!have_ucontext) return;	1082	if (!have_ucontext) return;
1083	if (it.getLastError()) \|unwind_error\| {	1083	if (it.getLastError()) \|unwind_error\| {
1084	printUnwindError(debug_info, writer, unwind_error.address, unwind_error.err, tty_config) catch {};	1084	printUnwindError(debug_info, writer, unwind_error.address, unwind_error.err, tty_config) catch {};
1085	}	1085	}
1086	}	1086	}
1087		1087
1088	fn printUnwindError(debug_info: SelfInfo, writer: Writer, address: usize, err: UnwindError, tty_config: io.tty.Config) !void {	1088	fn printUnwindError(debug_info: SelfInfo, writer: Writer, address: usize, err: UnwindError, tty_config: tty.Config) !void {
1089	const module_name = debug_info.getModuleNameForAddress(address) orelse "???";	1089	const module_name = debug_info.getModuleNameForAddress(address) orelse "???";
1090	try tty_config.setColor(writer, .dim);	1090	try tty_config.setColor(writer, .dim);
1091	if (err == error.MissingDebugInfo) {	1091	if (err == error.MissingDebugInfo) {
...	@@ -1096,7 +1096,7 @@ fn printUnwindError(debug_info: SelfInfo, writer: Writer, address: usize, err:	...	@@ -1096,7 +1096,7 @@ fn printUnwindError(debug_info: SelfInfo, writer: Writer, address: usize, err:
1096	try tty_config.setColor(writer, .reset);	1096	try tty_config.setColor(writer, .reset);
1097	}	1097	}
1098		1098
1099	pub fn printSourceAtAddress(debug_info: SelfInfo, writer: Writer, address: usize, tty_config: io.tty.Config) !void {	1099	pub fn printSourceAtAddress(debug_info: SelfInfo, writer: Writer, address: usize, tty_config: tty.Config) !void {
1100	const module = debug_info.getModuleForAddress(address) catch \|err\| switch (err) {	1100	const module = debug_info.getModuleForAddress(address) catch \|err\| switch (err) {
1101	error.MissingDebugInfo, error.InvalidDebugInfo => return printUnknownSource(debug_info, writer, address, tty_config),	1101	error.MissingDebugInfo, error.InvalidDebugInfo => return printUnknownSource(debug_info, writer, address, tty_config),
1102	else => return err,	1102	else => return err,
...	@@ -1125,7 +1125,7 @@ fn printLineInfo(	...	@@ -1125,7 +1125,7 @@ fn printLineInfo(
1125	address: usize,	1125	address: usize,
1126	symbol_name: []const u8,	1126	symbol_name: []const u8,
1127	compile_unit_name: []const u8,	1127	compile_unit_name: []const u8,
1128	tty_config: io.tty.Config,	1128	tty_config: tty.Config,
1129	comptime printLineFromFile: anytype,	1129	comptime printLineFromFile: anytype,
1130	) !void {	1130	) !void {
1131	nosuspend {	1131	nosuspend {
...	@@ -1597,10 +1597,10 @@ test "manage resources correctly" {	...	@@ -1597,10 +1597,10 @@ test "manage resources correctly" {
1597	// self-hosted debug info is still too buggy	1597	// self-hosted debug info is still too buggy
1598	if (builtin.zig_backend != .stage2_llvm) return error.SkipZigTest;	1598	if (builtin.zig_backend != .stage2_llvm) return error.SkipZigTest;
1599		1599
1600	var discarding: std.io.Writer.Discarding = .init(&.{});	1600	var discarding: Writer.Discarding = .init(&.{});
1601	var di = try SelfInfo.open(testing.allocator);	1601	var di = try SelfInfo.open(testing.allocator);
1602	defer di.deinit();	1602	defer di.deinit();
1603	try printSourceAtAddress(&di, &discarding.writer, showMyTrace(), io.tty.detectConfig(.stderr()));	1603	try printSourceAtAddress(&di, &discarding.writer, showMyTrace(), tty.detectConfig(.stderr()));
1604	}	1604	}
1605		1605
1606	noinline fn showMyTrace() usize {	1606	noinline fn showMyTrace() usize {
...	@@ -1666,7 +1666,7 @@ pub fn ConfigurableTrace(comptime size: usize, comptime stack_frame_count: usize	...	@@ -1666,7 +1666,7 @@ pub fn ConfigurableTrace(comptime size: usize, comptime stack_frame_count: usize
1666	pub fn dump(t: @This()) void {	1666	pub fn dump(t: @This()) void {
1667	if (!enabled) return;	1667	if (!enabled) return;
1668		1668
1669	const tty_config = io.tty.detectConfig(.stderr());	1669	const tty_config = tty.detectConfig(.stderr());
1670	const stderr = lockStderrWriter(&.{});	1670	const stderr = lockStderrWriter(&.{});
1671	defer unlockStderrWriter();	1671	defer unlockStderrWriter();
1672	const end = @min(t.index, size);	1672	const end = @min(t.index, size);

lib/std/debug/Dwarf/call_frame.zig+37-44

 @@ -51,15 +51,9 @@ const Opcode = enum(u8) {
     pub const hi_user = 0x3f;
 };
-fn readBlock(stream: *std.io.FixedBufferStream([]const u8)) ![]const u8 {
+fn readBlock(reader: *std.Io.Reader) ![]const u8 {
-    const reader = stream.reader();
+    const block_len = try reader.takeLeb128(usize);
-    const block_len = try leb.readUleb128(usize, reader);
+    return reader.take(block_len);
-    if (stream.pos + block_len > stream.buffer.len) return error.InvalidOperand;
-    const block = stream.buffer[stream.pos..][0..block_len];
-    reader.context.pos += block_len;
-    return block;
 }
 pub const Instruction = union(Opcode) {
 @@ -147,12 +141,11 @@ pub const Instruction = union(Opcode) {
     },
     pub fn read(
-        stream: *std.io.FixedBufferStream([]const u8),
+        reader: *std.Io.Reader,
         addr_size_bytes: u8,
         endian: std.builtin.Endian,
     ) !Instruction {
-        const reader = stream.reader();
+        switch (try reader.takeByte()) {
-        switch (try reader.readByte()) {
             Opcode.lo_inline...Opcode.hi_inline => |opcode| {
                 const e: Opcode = @enumFromInt(opcode & 0b11000000);
                 const value: u6 = @intCast(opcode & 0b111111);
 @@ -163,7 +156,7 @@ pub const Instruction = union(Opcode) {
                     .offset => .{
                         .offset = .{
                             .register = value,
-                            .offset = try leb.readUleb128(u64, reader),
+                            .offset = try reader.takeLeb128(u64),
                         },
                     },
                     .restore => .{
 @@ -183,111 +176,111 @@ pub const Instruction = union(Opcode) {
                     .set_loc => .{
                         .set_loc = .{
                             .address = switch (addr_size_bytes) {
-                                2 => try reader.readInt(u16, endian),
+                                2 => try reader.takeInt(u16, endian),
-                                4 => try reader.readInt(u32, endian),
+                                4 => try reader.takeInt(u32, endian),
-                                8 => try reader.readInt(u64, endian),
+                                8 => try reader.takeInt(u64, endian),
                                 else => return error.InvalidAddrSize,
                             },
                         },
                     },
                     .advance_loc1 => .{
-                        .advance_loc1 = .{ .delta = try reader.readByte() },
+                        .advance_loc1 = .{ .delta = try reader.takeByte() },
                     },
                     .advance_loc2 => .{
-                        .advance_loc2 = .{ .delta = try reader.readInt(u16, endian) },
+                        .advance_loc2 = .{ .delta = try reader.takeInt(u16, endian) },
                     },
                     .advance_loc4 => .{
-                        .advance_loc4 = .{ .delta = try reader.readInt(u32, endian) },
+                        .advance_loc4 = .{ .delta = try reader.takeInt(u32, endian) },
                     },
                     .offset_extended => .{
                         .offset_extended = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
-                            .offset = try leb.readUleb128(u64, reader),
+                            .offset = try reader.takeLeb128(u64),
                         },
                     },
                     .restore_extended => .{
                         .restore_extended = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
                         },
                     },
                     .undefined => .{
                         .undefined = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
                         },
                     },
                     .same_value => .{
                         .same_value = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
                         },
                     },
                     .register => .{
                         .register = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
-                            .target_register = try leb.readUleb128(u8, reader),
+                            .target_register = try reader.takeLeb128(u8),
                         },
                     },
                     .remember_state => .{ .remember_state = {} },
                     .restore_state => .{ .restore_state = {} },
                     .def_cfa => .{
                         .def_cfa = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
-                            .offset = try leb.readUleb128(u64, reader),
+                            .offset = try reader.takeLeb128(u64),
                         },
                     },
                     .def_cfa_register => .{
                         .def_cfa_register = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
                         },
                     },
                     .def_cfa_offset => .{
                         .def_cfa_offset = .{
-                            .offset = try leb.readUleb128(u64, reader),
+                            .offset = try reader.takeLeb128(u64),
                         },
                     },
                     .def_cfa_expression => .{
                         .def_cfa_expression = .{
-                            .block = try readBlock(stream),
+                            .block = try readBlock(reader),
                         },
                     },
                     .expression => .{
                         .expression = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
-                            .block = try readBlock(stream),
+                            .block = try readBlock(reader),
                         },
                     },
                     .offset_extended_sf => .{
                         .offset_extended_sf = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
-                            .offset = try leb.readIleb128(i64, reader),
+                            .offset = try reader.takeLeb128(i64),
                         },
                     },
                     .def_cfa_sf => .{
                         .def_cfa_sf = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
-                            .offset = try leb.readIleb128(i64, reader),
+                            .offset = try reader.takeLeb128(i64),
                         },
                     },
                     .def_cfa_offset_sf => .{
                         .def_cfa_offset_sf = .{
-                            .offset = try leb.readIleb128(i64, reader),
+                            .offset = try reader.takeLeb128(i64),
                         },
                     },
                     .val_offset => .{
                         .val_offset = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
-                            .offset = try leb.readUleb128(u64, reader),
+                            .offset = try reader.takeLeb128(u64),
                         },
                     },
                     .val_offset_sf => .{
                         .val_offset_sf = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
-                            .offset = try leb.readIleb128(i64, reader),
+                            .offset = try reader.takeLeb128(i64),
                         },
                     },
                     .val_expression => .{
                         .val_expression = .{
-                            .register = try leb.readUleb128(u8, reader),
+                            .register = try reader.takeLeb128(u8),
-                            .block = try readBlock(stream),
+                            .block = try readBlock(reader),
                         },
                     },
                 };

lib/std/debug/Dwarf/expression.zig+46-53

 @@ -62,7 +62,7 @@ pub const Error = error{
     InvalidTypeLength,
     TruncatedIntegralType,
-} || abi.RegBytesError || error{ EndOfStream, Overflow, OutOfMemory, DivisionByZero };
+} || abi.RegBytesError || error{ EndOfStream, Overflow, OutOfMemory, DivisionByZero, ReadFailed };
 /// A stack machine that can decode and run DWARF expressions.
 /// Expressions can be decoded for non-native address size and endianness,
 @@ -178,61 +178,60 @@ pub fn StackMachine(comptime options: Options) type {
             }
         }
-        pub fn readOperand(stream: *std.io.FixedBufferStream([]const u8), opcode: u8, context: Context) !?Operand {
+        pub fn readOperand(reader: *std.Io.Reader, opcode: u8, context: Context) !?Operand {
-            const reader = stream.reader();
             return switch (opcode) {
-                OP.addr => generic(try reader.readInt(addr_type, options.endian)),
+                OP.addr => generic(try reader.takeInt(addr_type, options.endian)),
                 OP.call_ref => switch (context.format) {
-                    .@"32" => generic(try reader.readInt(u32, options.endian)),
+                    .@"32" => generic(try reader.takeInt(u32, options.endian)),
-                    .@"64" => generic(try reader.readInt(u64, options.endian)),
+                    .@"64" => generic(try reader.takeInt(u64, options.endian)),
                 },
                 OP.const1u,
                 OP.pick,
-                => generic(try reader.readByte()),
+                => generic(try reader.takeByte()),
                 OP.deref_size,
                 OP.xderef_size,
-                => .{ .type_size = try reader.readByte() },
+                => .{ .type_size = try reader.takeByte() },
-                OP.const1s => generic(try reader.readByteSigned()),
+                OP.const1s => generic(try reader.takeByteSigned()),
                 OP.const2u,
                 OP.call2,
-                => generic(try reader.readInt(u16, options.endian)),
+                => generic(try reader.takeInt(u16, options.endian)),
-                OP.call4 => generic(try reader.readInt(u32, options.endian)),
+                OP.call4 => generic(try reader.takeInt(u32, options.endian)),
-                OP.const2s => generic(try reader.readInt(i16, options.endian)),
+                OP.const2s => generic(try reader.takeInt(i16, options.endian)),
                 OP.bra,
                 OP.skip,
-                => .{ .branch_offset = try reader.readInt(i16, options.endian) },
+                => .{ .branch_offset = try reader.takeInt(i16, options.endian) },
-                OP.const4u => generic(try reader.readInt(u32, options.endian)),
+                OP.const4u => generic(try reader.takeInt(u32, options.endian)),
-                OP.const4s => generic(try reader.readInt(i32, options.endian)),
+                OP.const4s => generic(try reader.takeInt(i32, options.endian)),
-                OP.const8u => generic(try reader.readInt(u64, options.endian)),
+                OP.const8u => generic(try reader.takeInt(u64, options.endian)),
-                OP.const8s => generic(try reader.readInt(i64, options.endian)),
+                OP.const8s => generic(try reader.takeInt(i64, options.endian)),
                 OP.constu,
                 OP.plus_uconst,
                 OP.addrx,
                 OP.constx,
                 OP.convert,
                 OP.reinterpret,
-                => generic(try leb.readUleb128(u64, reader)),
+                => generic(try reader.takeLeb128(u64)),
                 OP.consts,
                 OP.fbreg,
-                => generic(try leb.readIleb128(i64, reader)),
+                => generic(try reader.takeLeb128(i64)),
                 OP.lit0...OP.lit31 => |n| generic(n - OP.lit0),
                 OP.reg0...OP.reg31 => |n| .{ .register = n - OP.reg0 },
                 OP.breg0...OP.breg31 => |n| .{ .base_register = .{
                     .base_register = n - OP.breg0,
-                    .offset = try leb.readIleb128(i64, reader),
+                    .offset = try reader.takeLeb128(i64),
                 } },
-                OP.regx => .{ .register = try leb.readUleb128(u8, reader) },
+                OP.regx => .{ .register = try reader.takeLeb128(u8) },
                 OP.bregx => blk: {
-                    const base_register = try leb.readUleb128(u8, reader);
+                    const base_register = try reader.takeLeb128(u8);
-                    const offset = try leb.readIleb128(i64, reader);
+                    const offset = try reader.takeLeb128(i64);
                     break :blk .{ .base_register = .{
                         .base_register = base_register,
                         .offset = offset,
                     } };
                 },
                 OP.regval_type => blk: {
-                    const register = try leb.readUleb128(u8, reader);
+                    const register = try reader.takeLeb128(u8);
-                    const type_offset = try leb.readUleb128(addr_type, reader);
+                    const type_offset = try reader.takeLeb128(addr_type);
                     break :blk .{ .register_type = .{
                         .register = register,
                         .type_offset = type_offset,
 @@ -240,33 +239,27 @@ pub fn StackMachine(comptime options: Options) type {
                 },
                 OP.piece => .{
                     .composite_location = .{
-                        .size = try leb.readUleb128(u8, reader),
+                        .size = try reader.takeLeb128(u8),
                         .offset = 0,
                     },
                 },
                 OP.bit_piece => blk: {
-                    const size = try leb.readUleb128(u8, reader);
+                    const size = try reader.takeLeb128(u8);
-                    const offset = try leb.readIleb128(i64, reader);
+                    const offset = try reader.takeLeb128(i64);
                     break :blk .{ .composite_location = .{
                         .size = size,
                         .offset = offset,
                     } };
                 },
                 OP.implicit_value, OP.entry_value => blk: {
-                    const size = try leb.readUleb128(u8, reader);
+                    const size = try reader.takeLeb128(u8);
-                    if (stream.pos + size > stream.buffer.len) return error.InvalidExpression;
+                    const block = try reader.take(size);
-                    const block = stream.buffer[stream.pos..][0..size];
+                    break :blk .{ .block = block };
-                    stream.pos += size;
-                    break :blk .{
-                        .block = block,
-                    };
                 },
                 OP.const_type => blk: {
-                    const type_offset = try leb.readUleb128(addr_type, reader);
+                    const type_offset = try reader.takeLeb128(addr_type);
-                    const size = try reader.readByte();
+                    const size = try reader.takeByte();
-                    if (stream.pos + size > stream.buffer.len) return error.InvalidExpression;
+                    const value_bytes = try reader.take(size);
-                    const value_bytes = stream.buffer[stream.pos..][0..size];
-                    stream.pos += size;
                     break :blk .{ .const_type = .{
                         .type_offset = type_offset,
                         .value_bytes = value_bytes,
 @@ -276,8 +269,8 @@ pub fn StackMachine(comptime options: Options) type {
                 OP.xderef_type,
                 => .{
                     .deref_type = .{
-                        .size = try reader.readByte(),
+                        .size = try reader.takeByte(),
-                        .type_offset = try leb.readUleb128(addr_type, reader),
+                        .type_offset = try reader.takeLeb128(addr_type),
                     },
                 },
                 OP.lo_user...OP.hi_user => return error.UnimplementedUserOpcode,
 @@ -293,7 +286,7 @@ pub fn StackMachine(comptime options: Options) type {
             initial_value: ?usize,
         ) Error!?Value {
             if (initial_value) |i| try self.stack.append(allocator, .{ .generic = i });
-            var stream = std.io.fixedBufferStream(expression);
+            var stream: std.Io.Reader = .fixed(expression);
             while (try self.step(&stream, allocator, context)) {}
             if (self.stack.items.len == 0) return null;
             return self.stack.items[self.stack.items.len - 1];
 @@ -302,14 +295,14 @@ pub fn StackMachine(comptime options: Options) type {
         /// Reads an opcode and its operands from `stream`, then executes it
         pub fn step(
             self: *Self,
-            stream: *std.io.FixedBufferStream([]const u8),
+            stream: *std.Io.Reader,
             allocator: std.mem.Allocator,
             context: Context,
         ) Error!bool {
             if (@sizeOf(usize) != @sizeOf(addr_type) or options.endian != native_endian)
                 @compileError("Execution of non-native address sizes / endianness is not supported");
-            const opcode = try stream.reader().readByte();
+            const opcode = try stream.takeByte();
             if (options.call_frame_context and !isOpcodeValidInCFA(opcode)) return error.InvalidCFAOpcode;
             const operand = try readOperand(stream, opcode, context);
             switch (opcode) {
 @@ -663,11 +656,11 @@ pub fn StackMachine(comptime options: Options) type {
                     if (condition) {
                         const new_pos = std.math.cast(
                             usize,
-                            try std.math.add(isize, @as(isize, @intCast(stream.pos)), branch_offset),
+                            try std.math.add(isize, @as(isize, @intCast(stream.seek)), branch_offset),
                         ) orelse return error.InvalidExpression;
                         if (new_pos < 0 or new_pos > stream.buffer.len) return error.InvalidExpression;
-                        stream.pos = new_pos;
+                        stream.seek = new_pos;
                     }
                 },
                 OP.call2,
 @@ -746,7 +739,7 @@ pub fn StackMachine(comptime options: Options) type {
                     if (isOpcodeRegisterLocation(block[0])) {
                         if (context.thread_context == null) return error.IncompleteExpressionContext;
-                        var block_stream = std.io.fixedBufferStream(block);
+                        var block_stream: std.Io.Reader = .fixed(block);
                         const register = (try readOperand(&block_stream, block[0], context)).?.register;
                         const value = mem.readInt(usize, (try abi.regBytes(context.thread_context.?, register, context.reg_context))[0..@sizeOf(usize)], native_endian);
                         try self.stack.append(allocator, .{ .generic = value });
 @@ -769,7 +762,7 @@ pub fn StackMachine(comptime options: Options) type {
                 },
             }
-            return stream.pos < stream.buffer.len;
+            return stream.seek < stream.buffer.len;
         }
     };
 }
 @@ -858,7 +851,7 @@ pub fn Builder(comptime options: Options) type {
                     },
                     .signed => {
                         try writer.writeByte(OP.consts);
-                        try leb.writeIleb128(writer, value);
+                        try writer.writeLeb128(value);
                     },
                 },
             }
 @@ -892,19 +885,19 @@ pub fn Builder(comptime options: Options) type {
         // 2.5.1.2: Register Values
         pub fn writeFbreg(writer: *Writer, offset: anytype) !void {
             try writer.writeByte(OP.fbreg);
-            try leb.writeIleb128(writer, offset);
+            try writer.writeSleb128(offset);
         }
         pub fn writeBreg(writer: *Writer, register: u8, offset: anytype) !void {
             if (register > 31) return error.InvalidRegister;
             try writer.writeByte(OP.breg0 + register);
-            try leb.writeIleb128(writer, offset);
+            try writer.writeSleb128(offset);
         }
         pub fn writeBregx(writer: *Writer, register: anytype, offset: anytype) !void {
             try writer.writeByte(OP.bregx);
             try writer.writeUleb128(register);
-            try leb.writeIleb128(writer, offset);
+            try writer.writeSleb128(offset);
         }
         pub fn writeRegvalType(writer: *Writer, register: anytype, offset: anytype) !void {

lib/std/debug/SelfInfo.zig+4-7

 @@ -2017,15 +2017,12 @@ pub const VirtualMachine = struct {
         var prev_row: Row = self.current_row;
-        var cie_stream = std.io.fixedBufferStream(cie.initial_instructions);
+        var cie_stream: std.Io.Reader = .fixed(cie.initial_instructions);
-        var fde_stream = std.io.fixedBufferStream(fde.instructions);
+        var fde_stream: std.Io.Reader = .fixed(fde.instructions);
-        var streams = [_]*std.io.FixedBufferStream([]const u8){
+        const streams = [_]*std.Io.Reader{ &cie_stream, &fde_stream };
-            &cie_stream,
-            &fde_stream,
-        };
         for (&streams, 0..) |stream, i| {
-            while (stream.pos < stream.buffer.len) {
+            while (stream.seek < stream.buffer.len) {
                 const instruction = try std.debug.Dwarf.call_frame.Instruction.read(stream, addr_size_bytes, endian);
                 prev_row = try self.step(allocator, cie, i == 0, instruction);
                 if (pc < fde.pc_begin + self.current_row.offset) return prev_row;

lib/std/elf.zig+1-1

...	@@ -609,7 +609,7 @@ pub const ProgramHeaderBufferIterator = struct {	...	@@ -609,7 +609,7 @@ pub const ProgramHeaderBufferIterator = struct {
609	}	609	}
610	};	610	};
611		611
612	fn takePhdr(reader: *std.io.Reader, elf_header: Header) !?Elf64_Phdr {	612	fn takePhdr(reader: *std.Io.Reader, elf_header: Header) !?Elf64_Phdr {
613	if (elf_header.is_64) {	613	if (elf_header.is_64) {
614	const phdr = try reader.takeStruct(Elf64_Phdr, elf_header.endian);	614	const phdr = try reader.takeStruct(Elf64_Phdr, elf_header.endian);
615	return phdr;	615	return phdr;

lib/std/fmt.zig+1-2

...	@@ -3,7 +3,6 @@	...	@@ -3,7 +3,6 @@
3	const builtin = @import("builtin");	3	const builtin = @import("builtin");
4		4
5	const std = @import("std.zig");	5	const std = @import("std.zig");
6	const io = std.io;
7	const math = std.math;	6	const math = std.math;
8	const assert = std.debug.assert;	7	const assert = std.debug.assert;
9	const mem = std.mem;	8	const mem = std.mem;
...	@@ -12,7 +11,7 @@ const lossyCast = math.lossyCast;	...	@@ -12,7 +11,7 @@ const lossyCast = math.lossyCast;
12	const expectFmt = std.testing.expectFmt;	11	const expectFmt = std.testing.expectFmt;
13	const testing = std.testing;	12	const testing = std.testing;
14	const Allocator = std.mem.Allocator;	13	const Allocator = std.mem.Allocator;
15	const Writer = std.io.Writer;	14	const Writer = std.Io.Writer;
16		15
17	pub const float = @import("fmt/float.zig");	16	pub const float = @import("fmt/float.zig");
18		17

lib/std/fs/Dir.zig+48-30

...	@@ -1977,41 +1977,59 @@ pub fn readFile(self: Dir, file_path: []const u8, buffer: []u8) ![]u8 {	...	@@ -1977,41 +1977,59 @@ pub fn readFile(self: Dir, file_path: []const u8, buffer: []u8) ![]u8 {
1977	return buffer[0..end_index];	1977	return buffer[0..end_index];
1978	}	1978	}
1979		1979
1980	/// On success, caller owns returned buffer.	1980	pub const ReadFileAllocError = File.OpenError \|\| File.ReadError \|\| Allocator.Error \|\| error{
1981	/// If the file is larger than `max_bytes`, returns `error.FileTooBig`.	1981	/// File size reached or exceeded the provided limit.
1982	/// On Windows, `file_path` should be encoded as [WTF-8](https://simonsapin.github.io/wtf-8/).	1982	StreamTooLong,
1983	/// On WASI, `file_path` should be encoded as valid UTF-8.	1983	};
1984	/// On other platforms, `file_path` is an opaque sequence of bytes with no particular encoding.	1984
1985	pub fn readFileAlloc(self: Dir, allocator: mem.Allocator, file_path: []const u8, max_bytes: usize) ![]u8 {	1985	/// Reads all the bytes from the named file. On success, caller owns returned
1986	return self.readFileAllocOptions(allocator, file_path, max_bytes, null, .of(u8), null);	1986	/// buffer.
		1987	///
		1988	/// If the file size is already known, a better alternative is to initialize a
		1989	/// `File.Reader`.
		1990	///
		1991	/// If the file size cannot be obtained, an error is returned. If
		1992	/// this is a realistic possibility, a better alternative is to initialize a
		1993	/// `File.Reader` which handles this seamlessly.
		1994	pub fn readFileAlloc(
		1995	dir: Dir,
		1996	/// On Windows, should be encoded as [WTF-8](https://simonsapin.github.io/wtf-8/).
		1997	/// On WASI, should be encoded as valid UTF-8.
		1998	/// On other platforms, an opaque sequence of bytes with no particular encoding.
		1999	sub_path: []const u8,
		2000	/// Used to allocate the result.
		2001	gpa: Allocator,
		2002	/// If reached or exceeded, `error.StreamTooLong` is returned instead.
		2003	limit: std.Io.Limit,
		2004	) ReadFileAllocError![]u8 {
		2005	return readFileAllocOptions(dir, sub_path, gpa, limit, .of(u8), null);
1987	}	2006	}
1988		2007
1989	/// On success, caller owns returned buffer.	2008	/// Reads all the bytes from the named file. On success, caller owns returned
1990	/// If the file is larger than `max_bytes`, returns `error.FileTooBig`.	2009	/// buffer.
1991	/// If `size_hint` is specified the initial buffer size is calculated using	2010	///
1992	/// that value, otherwise the effective file size is used instead.	2011	/// If the file size is already known, a better alternative is to initialize a
1993	/// Allows specifying alignment and a sentinel value.	2012	/// `File.Reader`.
1994	/// On Windows, `file_path` should be encoded as [WTF-8](https://simonsapin.github.io/wtf-8/).
1995	/// On WASI, `file_path` should be encoded as valid UTF-8.
1996	/// On other platforms, `file_path` is an opaque sequence of bytes with no particular encoding.
1997	pub fn readFileAllocOptions(	2013	pub fn readFileAllocOptions(
1998	self: Dir,	2014	dir: Dir,
1999	allocator: mem.Allocator,	2015	/// On Windows, should be encoded as [WTF-8](https://simonsapin.github.io/wtf-8/).
2000	file_path: []const u8,	2016	/// On WASI, should be encoded as valid UTF-8.
2001	max_bytes: usize,	2017	/// On other platforms, an opaque sequence of bytes with no particular encoding.
2002	size_hint: ?usize,	2018	sub_path: []const u8,
		2019	/// Used to allocate the result.
		2020	gpa: Allocator,
		2021	/// If reached or exceeded, `error.StreamTooLong` is returned instead.
		2022	limit: std.Io.Limit,
2003	comptime alignment: std.mem.Alignment,	2023	comptime alignment: std.mem.Alignment,
2004	comptime optional_sentinel: ?u8,	2024	comptime sentinel: ?u8,
2005	) !(if (optional_sentinel) \|s\| [:s]align(alignment.toByteUnits()) u8 else []align(alignment.toByteUnits()) u8) {	2025	) ReadFileAllocError!(if (sentinel) \|s\| [:s]align(alignment.toByteUnits()) u8 else []align(alignment.toByteUnits()) u8) {
2006	var file = try self.openFile(file_path, .{});	2026	var file = try dir.openFile(sub_path, .{});
2007	defer file.close();	2027	defer file.close();
2008		2028	var file_reader = file.reader(&.{});
2009	// If the file size doesn't fit a usize it'll be certainly greater than	2029	return file_reader.interface.allocRemainingAlignedSentinel(gpa, limit, alignment, sentinel) catch \|err\| switch (err) {
2010	// `max_bytes`	2030	error.ReadFailed => return file_reader.err.?,
2011	const stat_size = size_hint orelse std.math.cast(usize, try file.getEndPos()) orelse	2031	error.OutOfMemory, error.StreamTooLong => \|e\| return e,
2012	return error.FileTooBig;	2032	};
2013
2014	return file.readToEndAllocOptions(allocator, max_bytes, stat_size, alignment, optional_sentinel);
2015	}	2033	}
2016		2034
2017	pub const DeleteTreeError = error{	2035	pub const DeleteTreeError = error{

lib/std/fs/File.zig-45

...	@@ -7,7 +7,6 @@ const File = @This();	...	@@ -7,7 +7,6 @@ const File = @This();
7	const std = @import("../std.zig");	7	const std = @import("../std.zig");
8	const Allocator = std.mem.Allocator;	8	const Allocator = std.mem.Allocator;
9	const posix = std.posix;	9	const posix = std.posix;
10	const io = std.io;
11	const math = std.math;	10	const math = std.math;
12	const assert = std.debug.assert;	11	const assert = std.debug.assert;
13	const linux = std.os.linux;	12	const linux = std.os.linux;
...	@@ -805,42 +804,6 @@ pub fn updateTimes(	...	@@ -805,42 +804,6 @@ pub fn updateTimes(
805	try posix.futimens(self.handle, &times);	804	try posix.futimens(self.handle, &times);
806	}	805	}
807		806
808	/// Deprecated in favor of `Reader`.
809	pub fn readToEndAlloc(self: File, allocator: Allocator, max_bytes: usize) ![]u8 {
810	return self.readToEndAllocOptions(allocator, max_bytes, null, .of(u8), null);
811	}
812
813	/// Deprecated in favor of `Reader`.
814	pub fn readToEndAllocOptions(
815	self: File,
816	allocator: Allocator,
817	max_bytes: usize,
818	size_hint: ?usize,
819	comptime alignment: Alignment,
820	comptime optional_sentinel: ?u8,
821	) !(if (optional_sentinel) \|s\| [:s]align(alignment.toByteUnits()) u8 else []align(alignment.toByteUnits()) u8) {
822	// If no size hint is provided fall back to the size=0 code path
823	const size = size_hint orelse 0;
824
825	// The file size returned by stat is used as hint to set the buffer
826	// size. If the reported size is zero, as it happens on Linux for files
827	// in /proc, a small buffer is allocated instead.
828	const initial_cap = @min((if (size > 0) size else 1024), max_bytes) + @intFromBool(optional_sentinel != null);
829	var array_list = try std.array_list.AlignedManaged(u8, alignment).initCapacity(allocator, initial_cap);
830	defer array_list.deinit();
831
832	self.deprecatedReader().readAllArrayListAligned(alignment, &array_list, max_bytes) catch \|err\| switch (err) {
833	error.StreamTooLong => return error.FileTooBig,
834	else => \|e\| return e,
835	};
836
837	if (optional_sentinel) \|sentinel\| {
838	return try array_list.toOwnedSliceSentinel(sentinel);
839	} else {
840	return try array_list.toOwnedSlice();
841	}
842	}
843
844	pub const ReadError = posix.ReadError;	807	pub const ReadError = posix.ReadError;
845	pub const PReadError = posix.PReadError;	808	pub const PReadError = posix.PReadError;
846		809
...	@@ -1089,14 +1052,6 @@ pub fn copyRangeAll(in: File, in_offset: u64, out: File, out_offset: u64, len: u	...	@@ -1089,14 +1052,6 @@ pub fn copyRangeAll(in: File, in_offset: u64, out: File, out_offset: u64, len: u
1089	return total_bytes_copied;	1052	return total_bytes_copied;
1090	}	1053	}
1091		1054
1092	/// Deprecated in favor of `Reader`.
1093	pub const DeprecatedReader = io.GenericReader(File, ReadError, read);
1094
1095	/// Deprecated in favor of `Reader`.
1096	pub fn deprecatedReader(file: File) DeprecatedReader {
1097	return .{ .context = file };
1098	}
1099
1100	/// Memoizes key information about a file handle such as:	1055	/// Memoizes key information about a file handle such as:
1101	/// * The size from calling stat, or the error that occurred therein.	1056	/// * The size from calling stat, or the error that occurred therein.
1102	/// * The current seek position.	1057	/// * The current seek position.

lib/std/fs/path.zig+1-1

...	@@ -150,7 +150,7 @@ pub fn fmtJoin(paths: []const []const u8) std.fmt.Formatter([]const []const u8,	...	@@ -150,7 +150,7 @@ pub fn fmtJoin(paths: []const []const u8) std.fmt.Formatter([]const []const u8,
150	return .{ .data = paths };	150	return .{ .data = paths };
151	}	151	}
152		152
153	fn formatJoin(paths: []const []const u8, w: *std.io.Writer) std.io.Writer.Error!void {	153	fn formatJoin(paths: []const []const u8, w: *std.Io.Writer) std.Io.Writer.Error!void {
154	const first_path_idx = for (paths, 0..) \|p, idx\| {	154	const first_path_idx = for (paths, 0..) \|p, idx\| {
155	if (p.len != 0) break idx;	155	if (p.len != 0) break idx;
156	} else return;	156	} else return;

lib/std/fs/test.zig+35-25

...	@@ -676,37 +676,47 @@ test "Dir.realpath smoke test" {	...	@@ -676,37 +676,47 @@ test "Dir.realpath smoke test" {
676	}.impl);	676	}.impl);
677	}	677	}
678		678
679	test "readAllAlloc" {	679	test "readFileAlloc" {
680	var tmp_dir = tmpDir(.{});	680	var tmp_dir = tmpDir(.{});
681	defer tmp_dir.cleanup();	681	defer tmp_dir.cleanup();
682		682
683	var file = try tmp_dir.dir.createFile("test_file", .{ .read = true });	683	var file = try tmp_dir.dir.createFile("test_file", .{ .read = true });
684	defer file.close();	684	defer file.close();
685		685
686	const buf1 = try file.readToEndAlloc(testing.allocator, 1024);	686	const buf1 = try tmp_dir.dir.readFileAlloc("test_file", testing.allocator, .limited(1024));
687	defer testing.allocator.free(buf1);	687	defer testing.allocator.free(buf1);
688	try testing.expectEqual(@as(usize, 0), buf1.len);	688	try testing.expectEqualStrings("", buf1);
689		689
690	const write_buf: []const u8 = "this is a test.\nthis is a test.\nthis is a test.\nthis is a test.\n";	690	const write_buf: []const u8 = "this is a test.\nthis is a test.\nthis is a test.\nthis is a test.\n";
691	try file.writeAll(write_buf);	691	try file.writeAll(write_buf);
692	try file.seekTo(0);	692
693		693	{
694	// max_bytes > file_size	694	// max_bytes > file_size
695	const buf2 = try file.readToEndAlloc(testing.allocator, 1024);	695	const buf2 = try tmp_dir.dir.readFileAlloc("test_file", testing.allocator, .limited(1024));
696	defer testing.allocator.free(buf2);	696	defer testing.allocator.free(buf2);
697	try testing.expectEqual(write_buf.len, buf2.len);	697	try testing.expectEqualStrings(write_buf, buf2);
698	try testing.expectEqualStrings(write_buf, buf2);	698	}
699	try file.seekTo(0);	699
700		700	{
701	// max_bytes == file_size	701	// max_bytes == file_size
702	const buf3 = try file.readToEndAlloc(testing.allocator, write_buf.len);	702	try testing.expectError(
703	defer testing.allocator.free(buf3);	703	error.StreamTooLong,
704	try testing.expectEqual(write_buf.len, buf3.len);	704	tmp_dir.dir.readFileAlloc("test_file", testing.allocator, .limited(write_buf.len)),
705	try testing.expectEqualStrings(write_buf, buf3);	705	);
706	try file.seekTo(0);	706	}
		707
		708	{
		709	// max_bytes == file_size + 1
		710	const buf2 = try tmp_dir.dir.readFileAlloc("test_file", testing.allocator, .limited(write_buf.len + 1));
		711	defer testing.allocator.free(buf2);
		712	try testing.expectEqualStrings(write_buf, buf2);
		713	}
707		714
708	// max_bytes < file_size	715	// max_bytes < file_size
709	try testing.expectError(error.FileTooBig, file.readToEndAlloc(testing.allocator, write_buf.len - 1));	716	try testing.expectError(
		717	error.StreamTooLong,
		718	tmp_dir.dir.readFileAlloc("test_file", testing.allocator, .limited(write_buf.len - 1)),
		719	);
710	}	720	}
711		721
712	test "Dir.statFile" {	722	test "Dir.statFile" {
...	@@ -778,16 +788,16 @@ test "file operations on directories" {	...	@@ -778,16 +788,16 @@ test "file operations on directories" {
778	switch (native_os) {	788	switch (native_os) {
779	.dragonfly, .netbsd => {	789	.dragonfly, .netbsd => {
780	// no error when reading a directory. See https://github.com/ziglang/zig/issues/5732	790	// no error when reading a directory. See https://github.com/ziglang/zig/issues/5732
781	const buf = try ctx.dir.readFileAlloc(testing.allocator, test_dir_name, std.math.maxInt(usize));	791	const buf = try ctx.dir.readFileAlloc(test_dir_name, testing.allocator, .unlimited);
782	testing.allocator.free(buf);	792	testing.allocator.free(buf);
783	},	793	},
784	.wasi => {	794	.wasi => {
785	// WASI return EBADF, which gets mapped to NotOpenForReading.	795	// WASI return EBADF, which gets mapped to NotOpenForReading.
786	// See https://github.com/bytecodealliance/wasmtime/issues/1935	796	// See https://github.com/bytecodealliance/wasmtime/issues/1935
787	try testing.expectError(error.NotOpenForReading, ctx.dir.readFileAlloc(testing.allocator, test_dir_name, std.math.maxInt(usize)));	797	try testing.expectError(error.NotOpenForReading, ctx.dir.readFileAlloc(test_dir_name, testing.allocator, .unlimited));
788	},	798	},
789	else => {	799	else => {
790	try testing.expectError(error.IsDir, ctx.dir.readFileAlloc(testing.allocator, test_dir_name, std.math.maxInt(usize)));	800	try testing.expectError(error.IsDir, ctx.dir.readFileAlloc(test_dir_name, testing.allocator, .unlimited));
791	},	801	},
792	}	802	}
793		803
...	@@ -1564,7 +1574,7 @@ test "copyFile" {	...	@@ -1564,7 +1574,7 @@ test "copyFile" {
1564	}	1574	}
1565		1575
1566	fn expectFileContents(dir: Dir, file_path: []const u8, data: []const u8) !void {	1576	fn expectFileContents(dir: Dir, file_path: []const u8, data: []const u8) !void {
1567	const contents = try dir.readFileAlloc(testing.allocator, file_path, 1000);	1577	const contents = try dir.readFileAlloc(file_path, testing.allocator, .limited(1000));
1568	defer testing.allocator.free(contents);	1578	defer testing.allocator.free(contents);
1569		1579
1570	try testing.expectEqualSlices(u8, data, contents);	1580	try testing.expectEqualSlices(u8, data, contents);
...	@@ -1587,7 +1597,7 @@ test "AtomicFile" {	...	@@ -1587,7 +1597,7 @@ test "AtomicFile" {
1587	try af.file_writer.interface.writeAll(test_content);	1597	try af.file_writer.interface.writeAll(test_content);
1588	try af.finish();	1598	try af.finish();
1589	}	1599	}
1590	const content = try ctx.dir.readFileAlloc(allocator, test_out_file, 9999);	1600	const content = try ctx.dir.readFileAlloc(test_out_file, allocator, .limited(9999));
1591	try testing.expectEqualStrings(test_content, content);	1601	try testing.expectEqualStrings(test_content, content);
1592		1602
1593	try ctx.dir.deleteFile(test_out_file);	1603	try ctx.dir.deleteFile(test_out_file);
...	@@ -2004,7 +2014,7 @@ test "invalid UTF-8/WTF-8 paths" {	...	@@ -2004,7 +2014,7 @@ test "invalid UTF-8/WTF-8 paths" {
2004	}	2014	}
2005		2015
2006	try testing.expectError(expected_err, ctx.dir.readFile(invalid_path, &[_]u8{}));	2016	try testing.expectError(expected_err, ctx.dir.readFile(invalid_path, &[_]u8{}));
2007	try testing.expectError(expected_err, ctx.dir.readFileAlloc(testing.allocator, invalid_path, 0));	2017	try testing.expectError(expected_err, ctx.dir.readFileAlloc(invalid_path, testing.allocator, .limited(0)));
2008		2018
2009	try testing.expectError(expected_err, ctx.dir.deleteTree(invalid_path));	2019	try testing.expectError(expected_err, ctx.dir.deleteTree(invalid_path));
2010	try testing.expectError(expected_err, ctx.dir.deleteTreeMinStackSize(invalid_path));	2020	try testing.expectError(expected_err, ctx.dir.deleteTreeMinStackSize(invalid_path));

lib/std/json.zig+2-2

...	@@ -1,7 +1,7 @@	...	@@ -1,7 +1,7 @@
1	//! JSON parsing and stringification conforming to RFC 8259. https://datatracker.ietf.org/doc/html/rfc8259	1	//! JSON parsing and stringification conforming to RFC 8259. https://datatracker.ietf.org/doc/html/rfc8259
2	//!	2	//!
3	//! The low-level `Scanner` API produces `Token`s from an input slice or successive slices of inputs,	3	//! The low-level `Scanner` API produces `Token`s from an input slice or successive slices of inputs,
4	//! The `Reader` API connects a `std.io.GenericReader` to a `Scanner`.	4	//! The `Reader` API connects a `std.Io.GenericReader` to a `Scanner`.
5	//!	5	//!
6	//! The high-level `parseFromSlice` and `parseFromTokenSource` deserialize a JSON document into a Zig type.	6	//! The high-level `parseFromSlice` and `parseFromTokenSource` deserialize a JSON document into a Zig type.
7	//! Parse into a dynamically-typed `Value` to load any JSON value for runtime inspection.	7	//! Parse into a dynamically-typed `Value` to load any JSON value for runtime inspection.
...	@@ -42,7 +42,7 @@ test Value {	...	@@ -42,7 +42,7 @@ test Value {
42	}	42	}
43		43
44	test Stringify {	44	test Stringify {
45	var out: std.io.Writer.Allocating = .init(testing.allocator);	45	var out: std.Io.Writer.Allocating = .init(testing.allocator);
46	var write_stream: Stringify = .{	46	var write_stream: Stringify = .{
47	.writer = &out.writer,	47	.writer = &out.writer,
48	.options = .{ .whitespace = .indent_2 },	48	.options = .{ .whitespace = .indent_2 },

lib/std/json/Stringify.zig+3-3

...	@@ -23,7 +23,7 @@ const Allocator = std.mem.Allocator;	...	@@ -23,7 +23,7 @@ const Allocator = std.mem.Allocator;
23	const ArrayList = std.ArrayList;	23	const ArrayList = std.ArrayList;
24	const BitStack = std.BitStack;	24	const BitStack = std.BitStack;
25	const Stringify = @This();	25	const Stringify = @This();
26	const Writer = std.io.Writer;	26	const Writer = std.Io.Writer;
27		27
28	const IndentationMode = enum(u1) {	28	const IndentationMode = enum(u1) {
29	object = 0,	29	object = 0,
...	@@ -576,7 +576,7 @@ pub fn value(v: anytype, options: Options, writer: *Writer) Error!void {	...	@@ -576,7 +576,7 @@ pub fn value(v: anytype, options: Options, writer: *Writer) Error!void {
576	}	576	}
577		577
578	test value {	578	test value {
579	var out: std.io.Writer.Allocating = .init(std.testing.allocator);	579	var out: Writer.Allocating = .init(std.testing.allocator);
580	const writer = &out.writer;	580	const writer = &out.writer;
581	defer out.deinit();	581	defer out.deinit();
582		582
...	@@ -616,7 +616,7 @@ test value {	...	@@ -616,7 +616,7 @@ test value {
616	///	616	///
617	/// Caller owns returned memory.	617	/// Caller owns returned memory.
618	pub fn valueAlloc(gpa: Allocator, v: anytype, options: Options) error{OutOfMemory}![]u8 {	618	pub fn valueAlloc(gpa: Allocator, v: anytype, options: Options) error{OutOfMemory}![]u8 {
619	var aw: std.io.Writer.Allocating = .init(gpa);	619	var aw: Writer.Allocating = .init(gpa);
620	defer aw.deinit();	620	defer aw.deinit();
621	value(v, options, &aw.writer) catch return error.OutOfMemory;	621	value(v, options, &aw.writer) catch return error.OutOfMemory;
622	return aw.toOwnedSlice();	622	return aw.toOwnedSlice();

lib/std/json/dynamic_test.zig+1-1

...	@@ -4,7 +4,7 @@ const mem = std.mem;	...	@@ -4,7 +4,7 @@ const mem = std.mem;
4	const testing = std.testing;	4	const testing = std.testing;
5	const ArenaAllocator = std.heap.ArenaAllocator;	5	const ArenaAllocator = std.heap.ArenaAllocator;
6	const Allocator = std.mem.Allocator;	6	const Allocator = std.mem.Allocator;
7	const Writer = std.io.Writer;	7	const Writer = std.Io.Writer;
8		8
9	const ObjectMap = @import("dynamic.zig").ObjectMap;	9	const ObjectMap = @import("dynamic.zig").ObjectMap;
10	const Array = @import("dynamic.zig").Array;	10	const Array = @import("dynamic.zig").Array;

lib/std/leb128.zig+22-251

...	@@ -2,120 +2,6 @@ const builtin = @import("builtin");	...	@@ -2,120 +2,6 @@ const builtin = @import("builtin");
2	const std = @import("std");	2	const std = @import("std");
3	const testing = std.testing;	3	const testing = std.testing;
4		4
5	/// Read a single unsigned LEB128 value from the given reader as type T,
6	/// or error.Overflow if the value cannot fit.
7	pub fn readUleb128(comptime T: type, reader: anytype) !T {
8	const U = if (@typeInfo(T).int.bits < 8) u8 else T;
9	const ShiftT = std.math.Log2Int(U);
10
11	const max_group = (@typeInfo(U).int.bits + 6) / 7;
12
13	var value: U = 0;
14	var group: ShiftT = 0;
15
16	while (group < max_group) : (group += 1) {
17	const byte = try reader.readByte();
18
19	const ov = @shlWithOverflow(@as(U, byte & 0x7f), group * 7);
20	if (ov[1] != 0) return error.Overflow;
21
22	value \|= ov[0];
23	if (byte & 0x80 == 0) break;
24	} else {
25	return error.Overflow;
26	}
27
28	// only applies in the case that we extended to u8
29	if (U != T) {
30	if (value > std.math.maxInt(T)) return error.Overflow;
31	}
32
33	return @as(T, @truncate(value));
34	}
35
36	/// Read a single signed LEB128 value from the given reader as type T,
37	/// or error.Overflow if the value cannot fit.
38	pub fn readIleb128(comptime T: type, reader: anytype) !T {
39	const S = if (@typeInfo(T).int.bits < 8) i8 else T;
40	const U = std.meta.Int(.unsigned, @typeInfo(S).int.bits);
41	const ShiftU = std.math.Log2Int(U);
42
43	const max_group = (@typeInfo(U).int.bits + 6) / 7;
44
45	var value = @as(U, 0);
46	var group = @as(ShiftU, 0);
47
48	while (group < max_group) : (group += 1) {
49	const byte = try reader.readByte();
50
51	const shift = group * 7;
52	const ov = @shlWithOverflow(@as(U, byte & 0x7f), shift);
53	if (ov[1] != 0) {
54	// Overflow is ok so long as the sign bit is set and this is the last byte
55	if (byte & 0x80 != 0) return error.Overflow;
56	if (@as(S, @bitCast(ov[0])) >= 0) return error.Overflow;
57
58	// and all the overflowed bits are 1
59	const remaining_shift = @as(u3, @intCast(@typeInfo(U).int.bits - @as(u16, shift)));
60	const remaining_bits = @as(i8, @bitCast(byte \| 0x80)) >> remaining_shift;
61	if (remaining_bits != -1) return error.Overflow;
62	} else {
63	// If we don't overflow and this is the last byte and the number being decoded
64	// is negative, check that the remaining bits are 1
65	if ((byte & 0x80 == 0) and (@as(S, @bitCast(ov[0])) < 0)) {
66	const remaining_shift = @as(u3, @intCast(@typeInfo(U).int.bits - @as(u16, shift)));
67	const remaining_bits = @as(i8, @bitCast(byte \| 0x80)) >> remaining_shift;
68	if (remaining_bits != -1) return error.Overflow;
69	}
70	}
71
72	value \|= ov[0];
73	if (byte & 0x80 == 0) {
74	const needs_sign_ext = group + 1 < max_group;
75	if (byte & 0x40 != 0 and needs_sign_ext) {
76	const ones = @as(S, -1);
77	value \|= @as(U, @bitCast(ones)) << (shift + 7);
78	}
79	break;
80	}
81	} else {
82	return error.Overflow;
83	}
84
85	const result = @as(S, @bitCast(value));
86	// Only applies if we extended to i8
87	if (S != T) {
88	if (result > std.math.maxInt(T) or result < std.math.minInt(T)) return error.Overflow;
89	}
90
91	return @as(T, @truncate(result));
92	}
93
94	/// Write a single signed integer as signed LEB128 to the given writer.
95	pub fn writeIleb128(writer: anytype, arg: anytype) !void {
96	const Arg = @TypeOf(arg);
97	const Int = switch (Arg) {
98	comptime_int => std.math.IntFittingRange(-@abs(arg), @abs(arg)),
99	else => Arg,
100	};
101	const Signed = if (@typeInfo(Int).int.bits < 8) i8 else Int;
102	const Unsigned = std.meta.Int(.unsigned, @typeInfo(Signed).int.bits);
103	var value: Signed = arg;
104
105	while (true) {
106	const unsigned: Unsigned = @bitCast(value);
107	const byte: u8 = @truncate(unsigned);
108	value >>= 6;
109	if (value == -1 or value == 0) {
110	try writer.writeByte(byte & 0x7F);
111	break;
112	} else {
113	value >>= 1;
114	try writer.writeByte(byte \| 0x80);
115	}
116	}
117	}
118
119	/// This is an "advanced" function. It allows one to use a fixed amount of memory to store a	5	/// This is an "advanced" function. It allows one to use a fixed amount of memory to store a
120	/// ULEB128. This defeats the entire purpose of using this data encoding; it will no longer use	6	/// ULEB128. This defeats the entire purpose of using this data encoding; it will no longer use
121	/// fewer bytes to store smaller numbers. The advantage of using a fixed width is that it makes	7	/// fewer bytes to store smaller numbers. The advantage of using a fixed width is that it makes
...	@@ -149,22 +35,26 @@ test writeUnsignedFixed {	...	@@ -149,22 +35,26 @@ test writeUnsignedFixed {
149	{	35	{
150	var buf: [4]u8 = undefined;	36	var buf: [4]u8 = undefined;
151	writeUnsignedFixed(4, &buf, 0);	37	writeUnsignedFixed(4, &buf, 0);
152	try testing.expect((try test_read_uleb128(u64, &buf)) == 0);	38	var reader: std.Io.Reader = .fixed(&buf);
		39	try testing.expectEqual(0, try reader.takeLeb128(u64));
153	}	40	}
154	{	41	{
155	var buf: [4]u8 = undefined;	42	var buf: [4]u8 = undefined;
156	writeUnsignedFixed(4, &buf, 1);	43	writeUnsignedFixed(4, &buf, 1);
157	try testing.expect((try test_read_uleb128(u64, &buf)) == 1);	44	var reader: std.Io.Reader = .fixed(&buf);
		45	try testing.expectEqual(1, try reader.takeLeb128(u64));
158	}	46	}
159	{	47	{
160	var buf: [4]u8 = undefined;	48	var buf: [4]u8 = undefined;
161	writeUnsignedFixed(4, &buf, 1000);	49	writeUnsignedFixed(4, &buf, 1000);
162	try testing.expect((try test_read_uleb128(u64, &buf)) == 1000);	50	var reader: std.Io.Reader = .fixed(&buf);
		51	try testing.expectEqual(1000, try reader.takeLeb128(u64));
163	}	52	}
164	{	53	{
165	var buf: [4]u8 = undefined;	54	var buf: [4]u8 = undefined;
166	writeUnsignedFixed(4, &buf, 10000000);	55	writeUnsignedFixed(4, &buf, 10000000);
167	try testing.expect((try test_read_uleb128(u64, &buf)) == 10000000);	56	var reader: std.Io.Reader = .fixed(&buf);
		57	try testing.expectEqual(10000000, try reader.takeLeb128(u64));
168	}	58	}
169	}	59	}
170		60
...	@@ -193,162 +83,43 @@ test writeSignedFixed {	...	@@ -193,162 +83,43 @@ test writeSignedFixed {
193	{	83	{
194	var buf: [4]u8 = undefined;	84	var buf: [4]u8 = undefined;
195	writeSignedFixed(4, &buf, 0);	85	writeSignedFixed(4, &buf, 0);
196	try testing.expect((try test_read_ileb128(i64, &buf)) == 0);	86	var reader: std.Io.Reader = .fixed(&buf);
		87	try testing.expectEqual(0, try reader.takeLeb128(i64));
197	}	88	}
198	{	89	{
199	var buf: [4]u8 = undefined;	90	var buf: [4]u8 = undefined;
200	writeSignedFixed(4, &buf, 1);	91	writeSignedFixed(4, &buf, 1);
201	try testing.expect((try test_read_ileb128(i64, &buf)) == 1);	92	var reader: std.Io.Reader = .fixed(&buf);
		93	try testing.expectEqual(1, try reader.takeLeb128(i64));
202	}	94	}
203	{	95	{
204	var buf: [4]u8 = undefined;	96	var buf: [4]u8 = undefined;
205	writeSignedFixed(4, &buf, -1);	97	writeSignedFixed(4, &buf, -1);
206	try testing.expect((try test_read_ileb128(i64, &buf)) == -1);	98	var reader: std.Io.Reader = .fixed(&buf);
		99	try testing.expectEqual(-1, try reader.takeLeb128(i64));
207	}	100	}
208	{	101	{
209	var buf: [4]u8 = undefined;	102	var buf: [4]u8 = undefined;
210	writeSignedFixed(4, &buf, 1000);	103	writeSignedFixed(4, &buf, 1000);
211	try testing.expect((try test_read_ileb128(i64, &buf)) == 1000);	104	var reader: std.Io.Reader = .fixed(&buf);
		105	try testing.expectEqual(1000, try reader.takeLeb128(i64));
212	}	106	}
213	{	107	{
214	var buf: [4]u8 = undefined;	108	var buf: [4]u8 = undefined;
215	writeSignedFixed(4, &buf, -1000);	109	writeSignedFixed(4, &buf, -1000);
216	try testing.expect((try test_read_ileb128(i64, &buf)) == -1000);	110	var reader: std.Io.Reader = .fixed(&buf);
		111	try testing.expectEqual(-1000, try reader.takeLeb128(i64));
217	}	112	}
218	{	113	{
219	var buf: [4]u8 = undefined;	114	var buf: [4]u8 = undefined;
220	writeSignedFixed(4, &buf, -10000000);	115	writeSignedFixed(4, &buf, -10000000);
221	try testing.expect((try test_read_ileb128(i64, &buf)) == -10000000);	116	var reader: std.Io.Reader = .fixed(&buf);
		117	try testing.expectEqual(-10000000, try reader.takeLeb128(i64));
222	}	118	}
223	{	119	{
224	var buf: [4]u8 = undefined;	120	var buf: [4]u8 = undefined;
225	writeSignedFixed(4, &buf, 10000000);	121	writeSignedFixed(4, &buf, 10000000);
226	try testing.expect((try test_read_ileb128(i64, &buf)) == 10000000);	122	var reader: std.Io.Reader = .fixed(&buf);
		123	try testing.expectEqual(10000000, try reader.takeLeb128(i64));
227	}	124	}
228	}	125	}
229
230	// tests
231	fn test_read_stream_ileb128(comptime T: type, encoded: []const u8) !T {
232	var reader = std.io.fixedBufferStream(encoded);
233	return try readIleb128(T, reader.reader());
234	}
235
236	fn test_read_stream_uleb128(comptime T: type, encoded: []const u8) !T {
237	var reader = std.io.fixedBufferStream(encoded);
238	return try readUleb128(T, reader.reader());
239	}
240
241	fn test_read_ileb128(comptime T: type, encoded: []const u8) !T {
242	var reader = std.io.fixedBufferStream(encoded);
243	const v1 = try readIleb128(T, reader.reader());
244	return v1;
245	}
246
247	fn test_read_uleb128(comptime T: type, encoded: []const u8) !T {
248	var reader = std.io.fixedBufferStream(encoded);
249	const v1 = try readUleb128(T, reader.reader());
250	return v1;
251	}
252
253	fn test_read_ileb128_seq(comptime T: type, comptime N: usize, encoded: []const u8) !void {
254	var reader = std.io.fixedBufferStream(encoded);
255	var i: usize = 0;
256	while (i < N) : (i += 1) {
257	_ = try readIleb128(T, reader.reader());
258	}
259	}
260
261	fn test_read_uleb128_seq(comptime T: type, comptime N: usize, encoded: []const u8) !void {
262	var reader = std.io.fixedBufferStream(encoded);
263	var i: usize = 0;
264	while (i < N) : (i += 1) {
265	_ = try readUleb128(T, reader.reader());
266	}
267	}
268
269	test "deserialize signed LEB128" {
270	// Truncated
271	try testing.expectError(error.EndOfStream, test_read_stream_ileb128(i64, "\x80"));
272
273	// Overflow
274	try testing.expectError(error.Overflow, test_read_ileb128(i8, "\x80\x80\x40"));
275	try testing.expectError(error.Overflow, test_read_ileb128(i16, "\x80\x80\x80\x40"));
276	try testing.expectError(error.Overflow, test_read_ileb128(i32, "\x80\x80\x80\x80\x40"));
277	try testing.expectError(error.Overflow, test_read_ileb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x40"));
278	try testing.expectError(error.Overflow, test_read_ileb128(i8, "\xff\x7e"));
279	try testing.expectError(error.Overflow, test_read_ileb128(i32, "\x80\x80\x80\x80\x08"));
280	try testing.expectError(error.Overflow, test_read_ileb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x01"));
281
282	// Decode SLEB128
283	try testing.expect((try test_read_ileb128(i64, "\x00")) == 0);
284	try testing.expect((try test_read_ileb128(i64, "\x01")) == 1);
285	try testing.expect((try test_read_ileb128(i64, "\x3f")) == 63);
286	try testing.expect((try test_read_ileb128(i64, "\x40")) == -64);
287	try testing.expect((try test_read_ileb128(i64, "\x41")) == -63);
288	try testing.expect((try test_read_ileb128(i64, "\x7f")) == -1);
289	try testing.expect((try test_read_ileb128(i64, "\x80\x01")) == 128);
290	try testing.expect((try test_read_ileb128(i64, "\x81\x01")) == 129);
291	try testing.expect((try test_read_ileb128(i64, "\xff\x7e")) == -129);
292	try testing.expect((try test_read_ileb128(i64, "\x80\x7f")) == -128);
293	try testing.expect((try test_read_ileb128(i64, "\x81\x7f")) == -127);
294	try testing.expect((try test_read_ileb128(i64, "\xc0\x00")) == 64);
295	try testing.expect((try test_read_ileb128(i64, "\xc7\x9f\x7f")) == -12345);
296	try testing.expect((try test_read_ileb128(i8, "\xff\x7f")) == -1);
297	try testing.expect((try test_read_ileb128(i16, "\xff\xff\x7f")) == -1);
298	try testing.expect((try test_read_ileb128(i32, "\xff\xff\xff\xff\x7f")) == -1);
299	try testing.expect((try test_read_ileb128(i32, "\x80\x80\x80\x80\x78")) == -0x80000000);
300	try testing.expect((try test_read_ileb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x7f")) == @as(i64, @bitCast(@as(u64, @intCast(0x8000000000000000)))));
301	try testing.expect((try test_read_ileb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x40")) == -0x4000000000000000);
302	try testing.expect((try test_read_ileb128(i64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x7f")) == -0x8000000000000000);
303
304	// Decode unnormalized SLEB128 with extra padding bytes.
305	try testing.expect((try test_read_ileb128(i64, "\x80\x00")) == 0);
306	try testing.expect((try test_read_ileb128(i64, "\x80\x80\x00")) == 0);
307	try testing.expect((try test_read_ileb128(i64, "\xff\x00")) == 0x7f);
308	try testing.expect((try test_read_ileb128(i64, "\xff\x80\x00")) == 0x7f);
309	try testing.expect((try test_read_ileb128(i64, "\x80\x81\x00")) == 0x80);
310	try testing.expect((try test_read_ileb128(i64, "\x80\x81\x80\x00")) == 0x80);
311
312	// Decode sequence of SLEB128 values
313	try test_read_ileb128_seq(i64, 4, "\x81\x01\x3f\x80\x7f\x80\x80\x80\x00");
314	}
315
316	test "deserialize unsigned LEB128" {
317	// Truncated
318	try testing.expectError(error.EndOfStream, test_read_stream_uleb128(u64, "\x80"));
319
320	// Overflow
321	try testing.expectError(error.Overflow, test_read_uleb128(u8, "\x80\x02"));
322	try testing.expectError(error.Overflow, test_read_uleb128(u8, "\x80\x80\x40"));
323	try testing.expectError(error.Overflow, test_read_uleb128(u16, "\x80\x80\x84"));
324	try testing.expectError(error.Overflow, test_read_uleb128(u16, "\x80\x80\x80\x40"));
325	try testing.expectError(error.Overflow, test_read_uleb128(u32, "\x80\x80\x80\x80\x90"));
326	try testing.expectError(error.Overflow, test_read_uleb128(u32, "\x80\x80\x80\x80\x40"));
327	try testing.expectError(error.Overflow, test_read_uleb128(u64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x40"));
328
329	// Decode ULEB128
330	try testing.expect((try test_read_uleb128(u64, "\x00")) == 0);
331	try testing.expect((try test_read_uleb128(u64, "\x01")) == 1);
332	try testing.expect((try test_read_uleb128(u64, "\x3f")) == 63);
333	try testing.expect((try test_read_uleb128(u64, "\x40")) == 64);
334	try testing.expect((try test_read_uleb128(u64, "\x7f")) == 0x7f);
335	try testing.expect((try test_read_uleb128(u64, "\x80\x01")) == 0x80);
336	try testing.expect((try test_read_uleb128(u64, "\x81\x01")) == 0x81);
337	try testing.expect((try test_read_uleb128(u64, "\x90\x01")) == 0x90);
338	try testing.expect((try test_read_uleb128(u64, "\xff\x01")) == 0xff);
339	try testing.expect((try test_read_uleb128(u64, "\x80\x02")) == 0x100);
340	try testing.expect((try test_read_uleb128(u64, "\x81\x02")) == 0x101);
341	try testing.expect((try test_read_uleb128(u64, "\x80\xc1\x80\x80\x10")) == 4294975616);
342	try testing.expect((try test_read_uleb128(u64, "\x80\x80\x80\x80\x80\x80\x80\x80\x80\x01")) == 0x8000000000000000);
343
344	// Decode ULEB128 with extra padding bytes
345	try testing.expect((try test_read_uleb128(u64, "\x80\x00")) == 0);
346	try testing.expect((try test_read_uleb128(u64, "\x80\x80\x00")) == 0);
347	try testing.expect((try test_read_uleb128(u64, "\xff\x00")) == 0x7f);
348	try testing.expect((try test_read_uleb128(u64, "\xff\x80\x00")) == 0x7f);
349	try testing.expect((try test_read_uleb128(u64, "\x80\x81\x00")) == 0x80);
350	try testing.expect((try test_read_uleb128(u64, "\x80\x81\x80\x00")) == 0x80);
351
352	// Decode sequence of ULEB128 values
353	try test_read_uleb128_seq(u64, 4, "\x81\x01\x3f\x80\x7f\x80\x80\x80\x00");
354	}

lib/std/macho.zig-1

...	@@ -1,7 +1,6 @@	...	@@ -1,7 +1,6 @@
1	const std = @import("std");	1	const std = @import("std");
2	const builtin = @import("builtin");	2	const builtin = @import("builtin");
3	const assert = std.debug.assert;	3	const assert = std.debug.assert;
4	const io = std.io;
5	const mem = std.mem;	4	const mem = std.mem;
6	const meta = std.meta;	5	const meta = std.meta;
7	const testing = std.testing;	6	const testing = std.testing;

lib/std/math/big/int.zig+5-5

lib/std/os/uefi.zig+1-1

...	@@ -106,7 +106,7 @@ pub const Guid = extern struct {	...	@@ -106,7 +106,7 @@ pub const Guid = extern struct {
106	node: [6]u8,	106	node: [6]u8,
107		107
108	/// Format GUID into hexadecimal lowercase xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx format	108	/// Format GUID into hexadecimal lowercase xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx format
109	pub fn format(self: Guid, writer: *std.io.Writer) std.io.Writer.Error!void {	109	pub fn format(self: Guid, writer: *std.Io.Writer) std.Io.Writer.Error!void {
110	const time_low = @byteSwap(self.time_low);	110	const time_low = @byteSwap(self.time_low);
111	const time_mid = @byteSwap(self.time_mid);	111	const time_mid = @byteSwap(self.time_mid);
112	const time_high_and_version = @byteSwap(self.time_high_and_version);	112	const time_high_and_version = @byteSwap(self.time_high_and_version);

lib/std/os/uefi/protocol/file.zig-1

...	@@ -1,6 +1,5 @@	...	@@ -1,6 +1,5 @@
1	const std = @import("std");	1	const std = @import("std");
2	const uefi = std.os.uefi;	2	const uefi = std.os.uefi;
3	const io = std.io;
4	const Guid = uefi.Guid;	3	const Guid = uefi.Guid;
5	const Time = uefi.Time;	4	const Time = uefi.Time;
6	const Status = uefi.Status;	5	const Status = uefi.Status;

lib/std/os/uefi/tables.zig+1-1

...	@@ -90,7 +90,7 @@ pub const MemoryType = enum(u32) {	...	@@ -90,7 +90,7 @@ pub const MemoryType = enum(u32) {
90	return @truncate(as_int - vendor_start);	90	return @truncate(as_int - vendor_start);
91	}	91	}
92		92
93	pub fn format(self: MemoryType, w: *std.io.Writer) std.io.Writer.Error!void {	93	pub fn format(self: MemoryType, w: *std.Io.Writer) std.Io.Writer.Error!void {
94	if (self.toOem()) \|oemval\|	94	if (self.toOem()) \|oemval\|
95	try w.print("OEM({X})", .{oemval})	95	try w.print("OEM({X})", .{oemval})
96	else if (self.toVendor()) \|vendorval\|	96	else if (self.toVendor()) \|vendorval\|

lib/std/pdb.zig-1

...	@@ -8,7 +8,6 @@	...	@@ -8,7 +8,6 @@
8	//! documentation and/or contributors.	8	//! documentation and/or contributors.
9		9
10	const std = @import("std.zig");	10	const std = @import("std.zig");
11	const io = std.io;
12	const math = std.math;	11	const math = std.math;
13	const mem = std.mem;	12	const mem = std.mem;
14	const coff = std.coff;	13	const coff = std.coff;

lib/std/posix.zig+2-2

...	@@ -671,8 +671,8 @@ fn getRandomBytesDevURandom(buf: []u8) !void {	...	@@ -671,8 +671,8 @@ fn getRandomBytesDevURandom(buf: []u8) !void {
671	}	671	}
672		672
673	const file: fs.File = .{ .handle = fd };	673	const file: fs.File = .{ .handle = fd };
674	const stream = file.deprecatedReader();	674	var file_reader = file.readerStreaming(&.{});
675	stream.readNoEof(buf) catch return error.Unexpected;	675	file_reader.readSliceAll(buf) catch return error.Unexpected;
676	}	676	}
677		677
678	/// Causes abnormal process termination.	678	/// Causes abnormal process termination.

lib/std/posix/test.zig+4-7

 @@ -4,7 +4,6 @@ const testing = std.testing;
 const expect = testing.expect;
 const expectEqual = testing.expectEqual;
 const expectError = testing.expectError;
-const io = std.io;
 const fs = std.fs;
 const mem = std.mem;
 const elf = std.elf;
 @@ -706,12 +705,11 @@ test "mmap" {
         );
         defer posix.munmap(data);
-        var mem_stream = io.fixedBufferStream(data);
+        var stream: std.Io.Reader = .fixed(data);
-        const stream = mem_stream.reader();
         var i: usize = 0;
         while (i < alloc_size / @sizeOf(u32)) : (i += 1) {
-            try testing.expectEqual(i, try stream.readInt(u32, .little));
+            try testing.expectEqual(i, try stream.takeInt(u32, .little));
         }
     }
 @@ -730,12 +728,11 @@ test "mmap" {
         );
         defer posix.munmap(data);
-        var mem_stream = io.fixedBufferStream(data);
+        var stream: std.Io.Reader = .fixed(data);
-        const stream = mem_stream.reader();
         var i: usize = alloc_size / 2 / @sizeOf(u32);
         while (i < alloc_size / @sizeOf(u32)) : (i += 1) {
-            try testing.expectEqual(i, try stream.readInt(u32, .little));
+            try testing.expectEqual(i, try stream.takeInt(u32, .little));
         }
     }
 }

lib/std/process.zig+93-88

...	@@ -1552,103 +1552,108 @@ pub fn getUserInfo(name: []const u8) !UserInfo {	...	@@ -1552,103 +1552,108 @@ pub fn getUserInfo(name: []const u8) !UserInfo {
1552	pub fn posixGetUserInfo(name: []const u8) !UserInfo {	1552	pub fn posixGetUserInfo(name: []const u8) !UserInfo {
1553	const file = try std.fs.openFileAbsolute("/etc/passwd", .{});	1553	const file = try std.fs.openFileAbsolute("/etc/passwd", .{});
1554	defer file.close();	1554	defer file.close();
		1555	var buffer: [4096]u8 = undefined;
		1556	var file_reader = file.reader(&buffer);
		1557	return posixGetUserInfoPasswdStream(name, &file_reader.interface) catch \|err\| switch (err) {
		1558	error.ReadFailed => return file_reader.err.?,
		1559	error.EndOfStream => return error.UserNotFound,
		1560	error.CorruptPasswordFile => return error.CorruptPasswordFile,
		1561	};
		1562	}
1555		1563
1556	const reader = file.deprecatedReader();	1564	fn posixGetUserInfoPasswdStream(name: []const u8, reader: *std.Io.Reader) !UserInfo {
1557
1558	const State = enum {	1565	const State = enum {
1559	Start,	1566	start,
1560	WaitForNextLine,	1567	wait_for_next_line,
1561	SkipPassword,	1568	skip_password,
1562	ReadUserId,	1569	read_user_id,
1563	ReadGroupId,	1570	read_group_id,
1564	};	1571	};
1565		1572
1566	var buf: [std.heap.page_size_min]u8 = undefined;
1567	var name_index: usize = 0;	1573	var name_index: usize = 0;
1568	var state = State.Start;
1569	var uid: posix.uid_t = 0;	1574	var uid: posix.uid_t = 0;
1570	var gid: posix.gid_t = 0;	1575	var gid: posix.gid_t = 0;
1571		1576
1572	while (true) {	1577	sw: switch (State.start) {
1573	const amt_read = try reader.read(buf[0..]);	1578	.start => switch (try reader.takeByte()) {
1574	for (buf[0..amt_read]) \|byte\| {	1579	':' => {
1575	switch (state) {	1580	if (name_index == name.len) {
1576	.Start => switch (byte) {	1581	continue :sw .skip_password;
1577	':' => {	1582	} else {
1578	state = if (name_index == name.len) State.SkipPassword else State.WaitForNextLine;	1583	continue :sw .wait_for_next_line;
1579	},	1584	}
1580	'\n' => return error.CorruptPasswordFile,	1585	},
1581	else => {	1586	'\n' => return error.CorruptPasswordFile,
1582	if (name_index == name.len or name[name_index] != byte) {	1587	else => \|byte\| {
1583	state = .WaitForNextLine;	1588	if (name_index == name.len or name[name_index] != byte) {
1584	}	1589	continue :sw .wait_for_next_line;
1585	name_index += 1;	1590	}
1586	},	1591	name_index += 1;
1587	},	1592	continue :sw .start;
1588	.WaitForNextLine => switch (byte) {	1593	},
1589	'\n' => {	1594	},
1590	name_index = 0;	1595	.wait_for_next_line => switch (try reader.takeByte()) {
1591	state = .Start;	1596	'\n' => {
1592	},	1597	name_index = 0;
1593	else => continue,	1598	continue :sw .start;
1594	},	1599	},
1595	.SkipPassword => switch (byte) {	1600	else => continue :sw .wait_for_next_line,
1596	'\n' => return error.CorruptPasswordFile,	1601	},
1597	':' => {	1602	.skip_password => switch (try reader.takeByte()) {
1598	state = .ReadUserId;	1603	'\n' => return error.CorruptPasswordFile,
1599	},	1604	':' => {
1600	else => continue,	1605	continue :sw .read_user_id;
1601	},	1606	},
1602	.ReadUserId => switch (byte) {	1607	else => continue :sw .skip_password,
1603	':' => {	1608	},
1604	state = .ReadGroupId;	1609	.read_user_id => switch (try reader.takeByte()) {
1605	},	1610	':' => {
1606	'\n' => return error.CorruptPasswordFile,	1611	continue :sw .read_group_id;
1607	else => {	1612	},
1608	const digit = switch (byte) {	1613	'\n' => return error.CorruptPasswordFile,
1609	'0'...'9' => byte - '0',	1614	else => \|byte\| {
1610	else => return error.CorruptPasswordFile,	1615	const digit = switch (byte) {
1611	};	1616	'0'...'9' => byte - '0',
1612	{	1617	else => return error.CorruptPasswordFile,
1613	const ov = @mulWithOverflow(uid, 10);	1618	};
1614	if (ov[1] != 0) return error.CorruptPasswordFile;	1619	{
1615	uid = ov[0];	1620	const ov = @mulWithOverflow(uid, 10);
1616	}	1621	if (ov[1] != 0) return error.CorruptPasswordFile;
1617	{	1622	uid = ov[0];
1618	const ov = @addWithOverflow(uid, digit);	1623	}
1619	if (ov[1] != 0) return error.CorruptPasswordFile;	1624	{
1620	uid = ov[0];	1625	const ov = @addWithOverflow(uid, digit);
1621	}	1626	if (ov[1] != 0) return error.CorruptPasswordFile;
1622	},	1627	uid = ov[0];
1623	},	1628	}
1624	.ReadGroupId => switch (byte) {	1629	continue :sw .read_user_id;
1625	'\n', ':' => {	1630	},
1626	return UserInfo{	1631	},
1627	.uid = uid,	1632	.read_group_id => switch (try reader.takeByte()) {
1628	.gid = gid,	1633	'\n', ':' => return .{
1629	};	1634	.uid = uid,
1630	},	1635	.gid = gid,
1631	else => {	1636	},
1632	const digit = switch (byte) {	1637	else => \|byte\| {
1633	'0'...'9' => byte - '0',	1638	const digit = switch (byte) {
1634	else => return error.CorruptPasswordFile,	1639	'0'...'9' => byte - '0',
1635	};	1640	else => return error.CorruptPasswordFile,
1636	{	1641	};
1637	const ov = @mulWithOverflow(gid, 10);	1642	{
1638	if (ov[1] != 0) return error.CorruptPasswordFile;	1643	const ov = @mulWithOverflow(gid, 10);
1639	gid = ov[0];	1644	if (ov[1] != 0) return error.CorruptPasswordFile;
1640	}	1645	gid = ov[0];
1641	{	1646	}
1642	const ov = @addWithOverflow(gid, digit);	1647	{
1643	if (ov[1] != 0) return error.CorruptPasswordFile;	1648	const ov = @addWithOverflow(gid, digit);
1644	gid = ov[0];	1649	if (ov[1] != 0) return error.CorruptPasswordFile;
1645	}	1650	gid = ov[0];
1646	},	1651	}
1647	},	1652	continue :sw .read_group_id;
1648	}	1653	},
1649	}	1654	},
1650	if (amt_read < buf.len) return error.UserNotFound;
1651	}	1655	}
		1656	comptime unreachable;
1652	}	1657	}
1653		1658
1654	pub fn getBaseAddress() usize {	1659	pub fn getBaseAddress() usize {

lib/std/std.zig-2

...	@@ -78,8 +78,6 @@ pub const hash = @import("hash.zig");	...	@@ -78,8 +78,6 @@ pub const hash = @import("hash.zig");
78	pub const hash_map = @import("hash_map.zig");	78	pub const hash_map = @import("hash_map.zig");
79	pub const heap = @import("heap.zig");	79	pub const heap = @import("heap.zig");
80	pub const http = @import("http.zig");	80	pub const http = @import("http.zig");
81	/// Deprecated
82	pub const io = Io;
83	pub const json = @import("json.zig");	81	pub const json = @import("json.zig");
84	pub const leb = @import("leb128.zig");	82	pub const leb = @import("leb128.zig");
85	pub const log = @import("log.zig");	83	pub const log = @import("log.zig");

lib/std/tar/test.zig+5-5

lib/std/testing.zig+8-8

...	@@ -358,7 +358,7 @@ test expectApproxEqRel {	...	@@ -358,7 +358,7 @@ test expectApproxEqRel {
358	/// This function is intended to be used only in tests. When the two slices are not	358	/// This function is intended to be used only in tests. When the two slices are not
359	/// equal, prints diagnostics to stderr to show exactly how they are not equal (with	359	/// equal, prints diagnostics to stderr to show exactly how they are not equal (with
360	/// the differences highlighted in red), then returns a test failure error.	360	/// the differences highlighted in red), then returns a test failure error.
361	/// The colorized output is optional and controlled by the return of `std.io.tty.detectConfig()`.	361	/// The colorized output is optional and controlled by the return of `std.Io.tty.detectConfig()`.
362	/// If your inputs are UTF-8 encoded strings, consider calling `expectEqualStrings` instead.	362	/// If your inputs are UTF-8 encoded strings, consider calling `expectEqualStrings` instead.
363	pub fn expectEqualSlices(comptime T: type, expected: []const T, actual: []const T) !void {	363	pub fn expectEqualSlices(comptime T: type, expected: []const T, actual: []const T) !void {
364	const diff_index: usize = diff_index: {	364	const diff_index: usize = diff_index: {
...	@@ -381,7 +381,7 @@ fn failEqualSlices(	...	@@ -381,7 +381,7 @@ fn failEqualSlices(
381	expected: []const T,	381	expected: []const T,
382	actual: []const T,	382	actual: []const T,
383	diff_index: usize,	383	diff_index: usize,
384	w: *std.io.Writer,	384	w: *std.Io.Writer,
385	) !void {	385	) !void {
386	try w.print("slices differ. first difference occurs at index {d} (0x{X})\n", .{ diff_index, diff_index });	386	try w.print("slices differ. first difference occurs at index {d} (0x{X})\n", .{ diff_index, diff_index });
387		387
...	@@ -401,7 +401,7 @@ fn failEqualSlices(	...	@@ -401,7 +401,7 @@ fn failEqualSlices(
401	const actual_window = actual[window_start..@min(actual.len, window_start + max_window_size)];	401	const actual_window = actual[window_start..@min(actual.len, window_start + max_window_size)];
402	const actual_truncated = window_start + actual_window.len < actual.len;	402	const actual_truncated = window_start + actual_window.len < actual.len;
403		403
404	const ttyconf = std.io.tty.detectConfig(.stderr());	404	const ttyconf = std.Io.tty.detectConfig(.stderr());
405	var differ = if (T == u8) BytesDiffer{	405	var differ = if (T == u8) BytesDiffer{
406	.expected = expected_window,	406	.expected = expected_window,
407	.actual = actual_window,	407	.actual = actual_window,
...	@@ -467,11 +467,11 @@ fn SliceDiffer(comptime T: type) type {	...	@@ -467,11 +467,11 @@ fn SliceDiffer(comptime T: type) type {
467	start_index: usize,	467	start_index: usize,
468	expected: []const T,	468	expected: []const T,
469	actual: []const T,	469	actual: []const T,
470	ttyconf: std.io.tty.Config,	470	ttyconf: std.Io.tty.Config,
471		471
472	const Self = @This();	472	const Self = @This();
473		473
474	pub fn write(self: Self, writer: *std.io.Writer) !void {	474	pub fn write(self: Self, writer: *std.Io.Writer) !void {
475	for (self.expected, 0..) \|value, i\| {	475	for (self.expected, 0..) \|value, i\| {
476	const full_index = self.start_index + i;	476	const full_index = self.start_index + i;
477	const diff = if (i < self.actual.len) !std.meta.eql(self.actual[i], value) else true;	477	const diff = if (i < self.actual.len) !std.meta.eql(self.actual[i], value) else true;
...	@@ -490,9 +490,9 @@ fn SliceDiffer(comptime T: type) type {	...	@@ -490,9 +490,9 @@ fn SliceDiffer(comptime T: type) type {
490	const BytesDiffer = struct {	490	const BytesDiffer = struct {
491	expected: []const u8,	491	expected: []const u8,
492	actual: []const u8,	492	actual: []const u8,
493	ttyconf: std.io.tty.Config,	493	ttyconf: std.Io.tty.Config,
494		494
495	pub fn write(self: BytesDiffer, writer: *std.io.Writer) !void {	495	pub fn write(self: BytesDiffer, writer: *std.Io.Writer) !void {
496	var expected_iterator = std.mem.window(u8, self.expected, 16, 16);	496	var expected_iterator = std.mem.window(u8, self.expected, 16, 16);
497	var row: usize = 0;	497	var row: usize = 0;
498	while (expected_iterator.next()) \|chunk\| {	498	while (expected_iterator.next()) \|chunk\| {
...	@@ -538,7 +538,7 @@ const BytesDiffer = struct {	...	@@ -538,7 +538,7 @@ const BytesDiffer = struct {
538	}	538	}
539	}	539	}
540		540
541	fn writeDiff(self: BytesDiffer, writer: *std.io.Writer, comptime fmt: []const u8, args: anytype, diff: bool) !void {	541	fn writeDiff(self: BytesDiffer, writer: *std.Io.Writer, comptime fmt: []const u8, args: anytype, diff: bool) !void {
542	if (diff) try self.ttyconf.setColor(writer, .red);	542	if (diff) try self.ttyconf.setColor(writer, .red);
543	try writer.print(fmt, args);	543	try writer.print(fmt, args);
544	if (diff) try self.ttyconf.setColor(writer, .reset);	544	if (diff) try self.ttyconf.setColor(writer, .reset);

lib/std/unicode.zig+2-2

...	@@ -804,7 +804,7 @@ fn testDecode(bytes: []const u8) !u21 {	...	@@ -804,7 +804,7 @@ fn testDecode(bytes: []const u8) !u21 {
804	/// Ill-formed UTF-8 byte sequences are replaced by the replacement character (U+FFFD)	804	/// Ill-formed UTF-8 byte sequences are replaced by the replacement character (U+FFFD)
805	/// according to "U+FFFD Substitution of Maximal Subparts" from Chapter 3 of	805	/// according to "U+FFFD Substitution of Maximal Subparts" from Chapter 3 of
806	/// the Unicode standard, and as specified by https://encoding.spec.whatwg.org/#utf-8-decoder	806	/// the Unicode standard, and as specified by https://encoding.spec.whatwg.org/#utf-8-decoder
807	fn formatUtf8(utf8: []const u8, writer: *std.io.Writer) std.io.Writer.Error!void {	807	fn formatUtf8(utf8: []const u8, writer: *std.Io.Writer) std.Io.Writer.Error!void {
808	var buf: [300]u8 = undefined; // just an arbitrary size	808	var buf: [300]u8 = undefined; // just an arbitrary size
809	var u8len: usize = 0;	809	var u8len: usize = 0;
810		810
...	@@ -1464,7 +1464,7 @@ test calcWtf16LeLen {	...	@@ -1464,7 +1464,7 @@ test calcWtf16LeLen {
1464		1464
1465	/// Print the given `utf16le` string, encoded as UTF-8 bytes.	1465	/// Print the given `utf16le` string, encoded as UTF-8 bytes.
1466	/// Unpaired surrogates are replaced by the replacement character (U+FFFD).	1466	/// Unpaired surrogates are replaced by the replacement character (U+FFFD).
1467	fn formatUtf16Le(utf16le: []const u16, writer: *std.io.Writer) std.io.Writer.Error!void {	1467	fn formatUtf16Le(utf16le: []const u16, writer: *std.Io.Writer) std.Io.Writer.Error!void {
1468	var buf: [300]u8 = undefined; // just an arbitrary size	1468	var buf: [300]u8 = undefined; // just an arbitrary size
1469	var it = Utf16LeIterator.init(utf16le);	1469	var it = Utf16LeIterator.init(utf16le);
1470	var u8len: usize = 0;	1470	var u8len: usize = 0;

lib/std/zig.zig+3-3

...	@@ -51,9 +51,9 @@ pub const Color = enum {	...	@@ -51,9 +51,9 @@ pub const Color = enum {
51	/// Assume stderr is a terminal.	51	/// Assume stderr is a terminal.
52	on,	52	on,
53		53
54	pub fn get_tty_conf(color: Color) std.io.tty.Config {	54	pub fn get_tty_conf(color: Color) std.Io.tty.Config {
55	return switch (color) {	55	return switch (color) {
56	.auto => std.io.tty.detectConfig(std.fs.File.stderr()),	56	.auto => std.Io.tty.detectConfig(std.fs.File.stderr()),
57	.on => .escape_codes,	57	.on => .escape_codes,
58	.off => .no_color,	58	.off => .no_color,
59	};	59	};
...	@@ -322,7 +322,7 @@ pub const BuildId = union(enum) {	...	@@ -322,7 +322,7 @@ pub const BuildId = union(enum) {
322	try std.testing.expectError(error.InvalidBuildIdStyle, parse("yaddaxxx"));	322	try std.testing.expectError(error.InvalidBuildIdStyle, parse("yaddaxxx"));
323	}	323	}
324		324
325	pub fn format(id: BuildId, writer: *std.io.Writer) std.io.Writer.Error!void {	325	pub fn format(id: BuildId, writer: *std.Io.Writer) std.Io.Writer.Error!void {
326	switch (id) {	326	switch (id) {
327	.none, .fast, .uuid, .sha1, .md5 => {	327	.none, .fast, .uuid, .sha1, .md5 => {
328	try writer.writeAll(@tagName(id));	328	try writer.writeAll(@tagName(id));

lib/std/zig/Ast.zig+1-1

...	@@ -204,7 +204,7 @@ pub fn parse(gpa: Allocator, source: [:0]const u8, mode: Mode) Allocator.Error!A	...	@@ -204,7 +204,7 @@ pub fn parse(gpa: Allocator, source: [:0]const u8, mode: Mode) Allocator.Error!A
204	/// `gpa` is used for allocating the resulting formatted source code.	204	/// `gpa` is used for allocating the resulting formatted source code.
205	/// Caller owns the returned slice of bytes, allocated with `gpa`.	205	/// Caller owns the returned slice of bytes, allocated with `gpa`.
206	pub fn renderAlloc(tree: Ast, gpa: Allocator) error{OutOfMemory}![]u8 {	206	pub fn renderAlloc(tree: Ast, gpa: Allocator) error{OutOfMemory}![]u8 {
207	var aw: std.io.Writer.Allocating = .init(gpa);	207	var aw: std.Io.Writer.Allocating = .init(gpa);
208	defer aw.deinit();	208	defer aw.deinit();
209	render(tree, gpa, &aw.writer, .{}) catch \|err\| switch (err) {	209	render(tree, gpa, &aw.writer, .{}) catch \|err\| switch (err) {
210	error.WriteFailed, error.OutOfMemory => return error.OutOfMemory,	210	error.WriteFailed, error.OutOfMemory => return error.OutOfMemory,

lib/std/zig/Ast/Render.zig+2-2

...	@@ -6,7 +6,7 @@ const meta = std.meta;	...	@@ -6,7 +6,7 @@ const meta = std.meta;
6	const Ast = std.zig.Ast;	6	const Ast = std.zig.Ast;
7	const Token = std.zig.Token;	7	const Token = std.zig.Token;
8	const primitives = std.zig.primitives;	8	const primitives = std.zig.primitives;
9	const Writer = std.io.Writer;	9	const Writer = std.Io.Writer;
10		10
11	const Render = @This();	11	const Render = @This();
12		12
...	@@ -2169,7 +2169,7 @@ fn renderArrayInit(	...	@@ -2169,7 +2169,7 @@ fn renderArrayInit(
2169		2169
2170	const section_exprs = row_exprs[0..section_end];	2170	const section_exprs = row_exprs[0..section_end];
2171		2171
2172	var sub_expr_buffer: std.io.Writer.Allocating = .init(gpa);	2172	var sub_expr_buffer: Writer.Allocating = .init(gpa);
2173	defer sub_expr_buffer.deinit();	2173	defer sub_expr_buffer.deinit();
2174		2174
2175	const sub_expr_buffer_starts = try gpa.alloc(usize, section_exprs.len + 1);	2175	const sub_expr_buffer_starts = try gpa.alloc(usize, section_exprs.len + 1);

lib/std/zig/AstGen.zig+2-2

...	@@ -11339,7 +11339,7 @@ fn parseStrLit(	...	@@ -11339,7 +11339,7 @@ fn parseStrLit(
11339	) InnerError!void {	11339	) InnerError!void {
11340	const raw_string = bytes[offset..];	11340	const raw_string = bytes[offset..];
11341	const result = r: {	11341	const result = r: {
11342	var aw: std.io.Writer.Allocating = .fromArrayList(astgen.gpa, buf);	11342	var aw: std.Io.Writer.Allocating = .fromArrayList(astgen.gpa, buf);
11343	defer buf.* = aw.toArrayList();	11343	defer buf.* = aw.toArrayList();
11344	break :r std.zig.string_literal.parseWrite(&aw.writer, raw_string) catch \|err\| switch (err) {	11344	break :r std.zig.string_literal.parseWrite(&aw.writer, raw_string) catch \|err\| switch (err) {
11345	error.WriteFailed => return error.OutOfMemory,	11345	error.WriteFailed => return error.OutOfMemory,
...	@@ -13785,7 +13785,7 @@ fn lowerAstErrors(astgen: *AstGen) error{OutOfMemory}!void {	...	@@ -13785,7 +13785,7 @@ fn lowerAstErrors(astgen: *AstGen) error{OutOfMemory}!void {
13785	const tree = astgen.tree;	13785	const tree = astgen.tree;
13786	assert(tree.errors.len > 0);	13786	assert(tree.errors.len > 0);
13787		13787
13788	var msg: std.io.Writer.Allocating = .init(gpa);	13788	var msg: std.Io.Writer.Allocating = .init(gpa);
13789	defer msg.deinit();	13789	defer msg.deinit();
13790	const msg_w = &msg.writer;	13790	const msg_w = &msg.writer;
13791		13791

lib/std/zig/ErrorBundle.zig+7-7

lib/std/zig/LibCInstallation.zig+1-1

...	@@ -43,7 +43,7 @@ pub fn parse(	...	@@ -43,7 +43,7 @@ pub fn parse(
43	}	43	}
44	}	44	}
45		45
46	const contents = try std.fs.cwd().readFileAlloc(allocator, libc_file, std.math.maxInt(usize));	46	const contents = try std.fs.cwd().readFileAlloc(libc_file, allocator, .limited(std.math.maxInt(usize)));
47	defer allocator.free(contents);	47	defer allocator.free(contents);
48		48
49	var it = std.mem.tokenizeScalar(u8, contents, '\n');	49	var it = std.mem.tokenizeScalar(u8, contents, '\n');

lib/std/zig/WindowsSdk.zig+1-1

...	@@ -766,7 +766,7 @@ const MsvcLibDir = struct {	...	@@ -766,7 +766,7 @@ const MsvcLibDir = struct {
766	writer.writeByte(std.fs.path.sep) catch unreachable;	766	writer.writeByte(std.fs.path.sep) catch unreachable;
767	writer.writeAll("state.json") catch unreachable;	767	writer.writeAll("state.json") catch unreachable;
768		768
769	const json_contents = instances_dir.readFileAlloc(allocator, writer.buffered(), std.math.maxInt(usize)) catch continue;	769	const json_contents = instances_dir.readFileAlloc(writer.buffered(), allocator, .limited(std.math.maxInt(usize))) catch continue;
770	defer allocator.free(json_contents);	770	defer allocator.free(json_contents);
771		771
772	var parsed = std.json.parseFromSlice(std.json.Value, allocator, json_contents, .{}) catch continue;	772	var parsed = std.json.parseFromSlice(std.json.Value, allocator, json_contents, .{}) catch continue;

lib/std/zig/ZonGen.zig+4-4

lib/std/zig/llvm/Builder.zig+1-1

...	@@ -7,7 +7,7 @@ const builtin = @import("builtin");	...	@@ -7,7 +7,7 @@ const builtin = @import("builtin");
7	const DW = std.dwarf;	7	const DW = std.dwarf;
8	const ir = @import("ir.zig");	8	const ir = @import("ir.zig");
9	const log = std.log.scoped(.llvm);	9	const log = std.log.scoped(.llvm);
10	const Writer = std.io.Writer;	10	const Writer = std.Io.Writer;
11		11
12	gpa: Allocator,	12	gpa: Allocator,
13	strip: bool,	13	strip: bool,

lib/std/zig/parser_test.zig-1

...	@@ -1,7 +1,6 @@	...	@@ -1,7 +1,6 @@
1	const std = @import("std");	1	const std = @import("std");
2	const mem = std.mem;	2	const mem = std.mem;
3	const print = std.debug.print;	3	const print = std.debug.print;
4	const io = std.io;
5	const maxInt = std.math.maxInt;	4	const maxInt = std.math.maxInt;
6		5
7	test "zig fmt: remove extra whitespace at start and end of file with comment between" {	6	test "zig fmt: remove extra whitespace at start and end of file with comment between" {

lib/std/zig/string_literal.zig+3-3

lib/std/zip.zig+2-2

...	@@ -195,12 +195,12 @@ pub const Decompress = struct {	...	@@ -195,12 +195,12 @@ pub const Decompress = struct {
195	};	195	};
196	}	196	}
197		197
198	fn streamStore(r: Reader, w: Writer, limit: std.io.Limit) Reader.StreamError!usize {	198	fn streamStore(r: Reader, w: Writer, limit: std.Io.Limit) Reader.StreamError!usize {
199	const d: *Decompress = @fieldParentPtr("interface", r);	199	const d: *Decompress = @fieldParentPtr("interface", r);
200	return d.store.read(w, limit);	200	return d.store.read(w, limit);
201	}	201	}
202		202
203	fn streamDeflate(r: Reader, w: Writer, limit: std.io.Limit) Reader.StreamError!usize {	203	fn streamDeflate(r: Reader, w: Writer, limit: std.Io.Limit) Reader.StreamError!usize {
204	const d: *Decompress = @fieldParentPtr("interface", r);	204	const d: *Decompress = @fieldParentPtr("interface", r);
205	return flate.Decompress.read(&d.inflate, w, limit);	205	return flate.Decompress.read(&d.inflate, w, limit);
206	}	206	}

lib/ubsan_rt.zig+1-1

...	@@ -119,7 +119,7 @@ const Value = extern struct {	...	@@ -119,7 +119,7 @@ const Value = extern struct {
119	}	119	}
120	}	120	}
121		121
122	pub fn format(value: Value, writer: *std.io.Writer) std.io.Writer.Error!void {	122	pub fn format(value: Value, writer: *std.Io.Writer) std.Io.Writer.Error!void {
123	// Work around x86_64 backend limitation.	123	// Work around x86_64 backend limitation.
124	if (builtin.zig_backend == .stage2_x86_64 and builtin.os.tag == .windows) {	124	if (builtin.zig_backend == .stage2_x86_64 and builtin.os.tag == .windows) {
125	try writer.writeAll("(unknown)");	125	try writer.writeAll("(unknown)");

src/Air.zig+1-1

...	@@ -961,7 +961,7 @@ pub const Inst = struct {	...	@@ -961,7 +961,7 @@ pub const Inst = struct {
961	return index.unwrap().target;	961	return index.unwrap().target;
962	}	962	}
963		963
964	pub fn format(index: Index, w: *std.io.Writer) std.io.Writer.Error!void {	964	pub fn format(index: Index, w: *std.Io.Writer) std.Io.Writer.Error!void {
965	try w.writeByte('%');	965	try w.writeByte('%');
966	switch (index.unwrap()) {	966	switch (index.unwrap()) {
967	.ref => {},	967	.ref => {},

src/Air/Liveness.zig+3-2

...	@@ -10,6 +10,7 @@ const log = std.log.scoped(.liveness);	...	@@ -10,6 +10,7 @@ const log = std.log.scoped(.liveness);
10	const assert = std.debug.assert;	10	const assert = std.debug.assert;
11	const Allocator = std.mem.Allocator;	11	const Allocator = std.mem.Allocator;
12	const Log2Int = std.math.Log2Int;	12	const Log2Int = std.math.Log2Int;
		13	const Writer = std.Io.Writer;
13		14
14	const Liveness = @This();	15	const Liveness = @This();
15	const trace = @import("../tracy.zig").trace;	16	const trace = @import("../tracy.zig").trace;
...	@@ -2037,7 +2038,7 @@ fn fmtInstSet(set: *const std.AutoHashMapUnmanaged(Air.Inst.Index, void)) FmtIns	...	@@ -2037,7 +2038,7 @@ fn fmtInstSet(set: *const std.AutoHashMapUnmanaged(Air.Inst.Index, void)) FmtIns
2037	const FmtInstSet = struct {	2038	const FmtInstSet = struct {
2038	set: *const std.AutoHashMapUnmanaged(Air.Inst.Index, void),	2039	set: *const std.AutoHashMapUnmanaged(Air.Inst.Index, void),
2039		2040
2040	pub fn format(val: FmtInstSet, w: *std.io.Writer) std.io.Writer.Error!void {	2041	pub fn format(val: FmtInstSet, w: *Writer) Writer.Error!void {
2041	if (val.set.count() == 0) {	2042	if (val.set.count() == 0) {
2042	try w.writeAll("[no instructions]");	2043	try w.writeAll("[no instructions]");
2043	return;	2044	return;
...	@@ -2057,7 +2058,7 @@ fn fmtInstList(list: []const Air.Inst.Index) FmtInstList {	...	@@ -2057,7 +2058,7 @@ fn fmtInstList(list: []const Air.Inst.Index) FmtInstList {
2057	const FmtInstList = struct {	2058	const FmtInstList = struct {
2058	list: []const Air.Inst.Index,	2059	list: []const Air.Inst.Index,
2059		2060
2060	pub fn format(val: FmtInstList, w: *std.io.Writer) std.io.Writer.Error!void {	2061	pub fn format(val: FmtInstList, w: *Writer) Writer.Error!void {
2061	if (val.list.len == 0) {	2062	if (val.list.len == 0) {
2062	try w.writeAll("[no instructions]");	2063	try w.writeAll("[no instructions]");
2063	return;	2064	return;

src/Air/print.zig+48-48

src/Compilation.zig+5-5

src/InternPool.zig+15-15

 @@ -1,6 +1,20 @@
 //! All interned objects have both a value and a type.
 //! This data structure is self-contained.
+const builtin = @import("builtin");
+const std = @import("std");
+const Allocator = std.mem.Allocator;
+const assert = std.debug.assert;
+const BigIntConst = std.math.big.int.Const;
+const BigIntMutable = std.math.big.int.Mutable;
+const Cache = std.Build.Cache;
+const Limb = std.math.big.Limb;
+const Hash = std.hash.Wyhash;
+const InternPool = @This();
+const Zcu = @import("Zcu.zig");
+const Zir = std.zig.Zir;
 /// One item per thread, indexed by `tid`, which is dense and unique per thread.
 locals: []Local,
 /// Length must be a power of two and represents the number of simultaneous
 @@ -1606,20 +1620,6 @@ fn getIndexMask(ip: *const InternPool, comptime BackingInt: type) u32 {
 const FieldMap = std.ArrayHashMapUnmanaged(void, void, std.array_hash_map.AutoContext(void), false);
-const builtin = @import("builtin");
-const std = @import("std");
-const Allocator = std.mem.Allocator;
-const assert = std.debug.assert;
-const BigIntConst = std.math.big.int.Const;
-const BigIntMutable = std.math.big.int.Mutable;
-const Cache = std.Build.Cache;
-const Limb = std.math.big.Limb;
-const Hash = std.hash.Wyhash;
-const InternPool = @This();
-const Zcu = @import("Zcu.zig");
-const Zir = std.zig.Zir;
 /// An index into `maps` which might be `none`.
 pub const OptionalMapIndex = enum(u32) {
     none = std.math.maxInt(u32),
 @@ -1895,7 +1895,7 @@ pub const NullTerminatedString = enum(u32) {
         ip: *const InternPool,
         id: bool,
     };
-    fn format(data: FormatData, writer: *std.io.Writer) std.io.Writer.Error!void {
+    fn format(data: FormatData, writer: *std.Io.Writer) std.Io.Writer.Error!void {
         const slice = data.string.toSlice(data.ip);
         if (!data.id) {
             try writer.writeAll(slice);

src/Package/Fetch.zig+4-5

...	@@ -655,10 +655,9 @@ fn loadManifest(f: *Fetch, pkg_root: Cache.Path) RunError!void {	...	@@ -655,10 +655,9 @@ fn loadManifest(f: *Fetch, pkg_root: Cache.Path) RunError!void {
655	const eb = &f.error_bundle;	655	const eb = &f.error_bundle;
656	const arena = f.arena.allocator();	656	const arena = f.arena.allocator();
657	const manifest_bytes = pkg_root.root_dir.handle.readFileAllocOptions(	657	const manifest_bytes = pkg_root.root_dir.handle.readFileAllocOptions(
658	arena,
659	try fs.path.join(arena, &.{ pkg_root.sub_path, Manifest.basename }),	658	try fs.path.join(arena, &.{ pkg_root.sub_path, Manifest.basename }),
660	Manifest.max_bytes,	659	arena,
661	null,	660	.limited(Manifest.max_bytes),
662	.@"1",	661	.@"1",
663	0,	662	0,
664	) catch \|err\| switch (err) {	663	) catch \|err\| switch (err) {
...	@@ -2020,7 +2019,7 @@ const UnpackResult = struct {	...	@@ -2020,7 +2019,7 @@ const UnpackResult = struct {
2020	// output errors to string	2019	// output errors to string
2021	var errors = try fetch.error_bundle.toOwnedBundle("");	2020	var errors = try fetch.error_bundle.toOwnedBundle("");
2022	defer errors.deinit(gpa);	2021	defer errors.deinit(gpa);
2023	var aw: std.io.Writer.Allocating = .init(gpa);	2022	var aw: std.Io.Writer.Allocating = .init(gpa);
2024	defer aw.deinit();	2023	defer aw.deinit();
2025	try errors.renderToWriter(.{ .ttyconf = .no_color }, &aw.writer);	2024	try errors.renderToWriter(.{ .ttyconf = .no_color }, &aw.writer);
2026	try std.testing.expectEqualStrings(	2025	try std.testing.expectEqualStrings(
...	@@ -2329,7 +2328,7 @@ const TestFetchBuilder = struct {	...	@@ -2329,7 +2328,7 @@ const TestFetchBuilder = struct {
2329	if (notes_len > 0) {	2328	if (notes_len > 0) {
2330	try std.testing.expectEqual(notes_len, em.notes_len);	2329	try std.testing.expectEqual(notes_len, em.notes_len);
2331	}	2330	}
2332	var aw: std.io.Writer.Allocating = .init(std.testing.allocator);	2331	var aw: std.Io.Writer.Allocating = .init(std.testing.allocator);
2333	defer aw.deinit();	2332	defer aw.deinit();
2334	try errors.renderToWriter(.{ .ttyconf = .no_color }, &aw.writer);	2333	try errors.renderToWriter(.{ .ttyconf = .no_color }, &aw.writer);
2335	try std.testing.expectEqualStrings(msg, aw.written());	2334	try std.testing.expectEqualStrings(msg, aw.written());

src/Package/Fetch/git.zig+3-3

src/Package/Manifest.zig+1-1

...	@@ -472,7 +472,7 @@ const Parse = struct {	...	@@ -472,7 +472,7 @@ const Parse = struct {
472	) InnerError!void {	472	) InnerError!void {
473	const raw_string = bytes[offset..];	473	const raw_string = bytes[offset..];
474	const result = r: {	474	const result = r: {
475	var aw: std.io.Writer.Allocating = .fromArrayList(p.gpa, buf);	475	var aw: std.Io.Writer.Allocating = .fromArrayList(p.gpa, buf);
476	defer buf.* = aw.toArrayList();	476	defer buf.* = aw.toArrayList();
477	break :r std.zig.string_literal.parseWrite(&aw.writer, raw_string) catch \|err\| switch (err) {	477	break :r std.zig.string_literal.parseWrite(&aw.writer, raw_string) catch \|err\| switch (err) {
478	error.WriteFailed => return error.OutOfMemory,	478	error.WriteFailed => return error.OutOfMemory,

src/Sema.zig+5-5

...	@@ -3080,7 +3080,7 @@ pub fn createTypeName(	...	@@ -3080,7 +3080,7 @@ pub fn createTypeName(
3080	const fn_info = sema.code.getFnInfo(ip.funcZirBodyInst(sema.func_index).resolve(ip) orelse return error.AnalysisFail);	3080	const fn_info = sema.code.getFnInfo(ip.funcZirBodyInst(sema.func_index).resolve(ip) orelse return error.AnalysisFail);
3081	const zir_tags = sema.code.instructions.items(.tag);	3081	const zir_tags = sema.code.instructions.items(.tag);
3082		3082
3083	var aw: std.io.Writer.Allocating = .init(gpa);	3083	var aw: std.Io.Writer.Allocating = .init(gpa);
3084	defer aw.deinit();	3084	defer aw.deinit();
3085	const w = &aw.writer;	3085	const w = &aw.writer;
3086	w.print("{f}(", .{block.type_name_ctx.fmt(ip)}) catch return error.OutOfMemory;	3086	w.print("{f}(", .{block.type_name_ctx.fmt(ip)}) catch return error.OutOfMemory;
...	@@ -5508,7 +5508,7 @@ fn zirCompileLog(	...	@@ -5508,7 +5508,7 @@ fn zirCompileLog(
5508	const zcu = pt.zcu;	5508	const zcu = pt.zcu;
5509	const gpa = zcu.gpa;	5509	const gpa = zcu.gpa;
5510		5510
5511	var aw: std.io.Writer.Allocating = .init(gpa);	5511	var aw: std.Io.Writer.Allocating = .init(gpa);
5512	defer aw.deinit();	5512	defer aw.deinit();
5513	const writer = &aw.writer;	5513	const writer = &aw.writer;
5514		5514
...	@@ -9080,7 +9080,7 @@ fn callConvSupportsVarArgs(cc: std.builtin.CallingConvention.Tag) bool {	...	@@ -9080,7 +9080,7 @@ fn callConvSupportsVarArgs(cc: std.builtin.CallingConvention.Tag) bool {
9080	fn checkCallConvSupportsVarArgs(sema: Sema, block: Block, src: LazySrcLoc, cc: std.builtin.CallingConvention.Tag) CompileError!void {	9080	fn checkCallConvSupportsVarArgs(sema: Sema, block: Block, src: LazySrcLoc, cc: std.builtin.CallingConvention.Tag) CompileError!void {
9081	const CallingConventionsSupportingVarArgsList = struct {	9081	const CallingConventionsSupportingVarArgsList = struct {
9082	arch: std.Target.Cpu.Arch,	9082	arch: std.Target.Cpu.Arch,
9083	pub fn format(ctx: @This(), w: *std.io.Writer) std.io.Writer.Error!void {	9083	pub fn format(ctx: @This(), w: *std.Io.Writer) std.Io.Writer.Error!void {
9084	var first = true;	9084	var first = true;
9085	for (calling_conventions_supporting_var_args) \|cc_inner\| {	9085	for (calling_conventions_supporting_var_args) \|cc_inner\| {
9086	for (std.Target.Cpu.Arch.fromCallingConvention(cc_inner)) \|supported_arch\| {	9086	for (std.Target.Cpu.Arch.fromCallingConvention(cc_inner)) \|supported_arch\| {
...	@@ -9521,7 +9521,7 @@ fn finishFunc(	...	@@ -9521,7 +9521,7 @@ fn finishFunc(
9521	.bad_arch => \|allowed_archs\| {	9521	.bad_arch => \|allowed_archs\| {
9522	const ArchListFormatter = struct {	9522	const ArchListFormatter = struct {
9523	archs: []const std.Target.Cpu.Arch,	9523	archs: []const std.Target.Cpu.Arch,
9524	pub fn format(formatter: @This(), w: *std.io.Writer) std.io.Writer.Error!void {	9524	pub fn format(formatter: @This(), w: *std.Io.Writer) std.Io.Writer.Error!void {
9525	for (formatter.archs, 0..) \|arch, i\| {	9525	for (formatter.archs, 0..) \|arch, i\| {
9526	if (i != 0)	9526	if (i != 0)
9527	try w.writeAll(", ");	9527	try w.writeAll(", ");
...	@@ -36962,7 +36962,7 @@ fn notePathToComptimeAllocPtr(	...	@@ -36962,7 +36962,7 @@ fn notePathToComptimeAllocPtr(
36962	error.AnalysisFail => unreachable,	36962	error.AnalysisFail => unreachable,
36963	};	36963	};
36964		36964
36965	var second_path_aw: std.io.Writer.Allocating = .init(arena);	36965	var second_path_aw: std.Io.Writer.Allocating = .init(arena);
36966	defer second_path_aw.deinit();	36966	defer second_path_aw.deinit();
36967	const inter_name = try std.fmt.allocPrint(arena, "v{d}", .{intermediate_value_count});	36967	const inter_name = try std.fmt.allocPrint(arena, "v{d}", .{intermediate_value_count});
36968	const deriv_start = @import("print_value.zig").printPtrDerivation(	36968	const deriv_start = @import("print_value.zig").printPtrDerivation(

src/Type.zig+4-4

...	@@ -121,7 +121,7 @@ pub fn eql(a: Type, b: Type, zcu: *const Zcu) bool {	...	@@ -121,7 +121,7 @@ pub fn eql(a: Type, b: Type, zcu: *const Zcu) bool {
121	return a.toIntern() == b.toIntern();	121	return a.toIntern() == b.toIntern();
122	}	122	}
123		123
124	pub fn format(ty: Type, writer: *std.io.Writer) !void {	124	pub fn format(ty: Type, writer: *std.Io.Writer) !void {
125	_ = ty;	125	_ = ty;
126	_ = writer;	126	_ = writer;
127	@compileError("do not format types directly; use either ty.fmtDebug() or ty.fmt()");	127	@compileError("do not format types directly; use either ty.fmtDebug() or ty.fmt()");
...	@@ -140,7 +140,7 @@ const Format = struct {	...	@@ -140,7 +140,7 @@ const Format = struct {
140	ty: Type,	140	ty: Type,
141	pt: Zcu.PerThread,	141	pt: Zcu.PerThread,
142		142
143	fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	143	fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
144	return print(f.ty, writer, f.pt);	144	return print(f.ty, writer, f.pt);
145	}	145	}
146	};	146	};
...	@@ -151,13 +151,13 @@ pub fn fmtDebug(ty: Type) std.fmt.Formatter(Type, dump) {	...	@@ -151,13 +151,13 @@ pub fn fmtDebug(ty: Type) std.fmt.Formatter(Type, dump) {
151		151
152	/// This is a debug function. In order to print types in a meaningful way	152	/// This is a debug function. In order to print types in a meaningful way
153	/// we also need access to the module.	153	/// we also need access to the module.
154	pub fn dump(start_type: Type, writer: *std.io.Writer) std.io.Writer.Error!void {	154	pub fn dump(start_type: Type, writer: *std.Io.Writer) std.Io.Writer.Error!void {
155	return writer.print("{any}", .{start_type.ip_index});	155	return writer.print("{any}", .{start_type.ip_index});
156	}	156	}
157		157
158	/// Prints a name suitable for `@typeName`.	158	/// Prints a name suitable for `@typeName`.
159	/// TODO: take an `opt_sema` to pass to `fmtValue` when printing sentinels.	159	/// TODO: take an `opt_sema` to pass to `fmtValue` when printing sentinels.
160	pub fn print(ty: Type, writer: *std.io.Writer, pt: Zcu.PerThread) std.io.Writer.Error!void {	160	pub fn print(ty: Type, writer: *std.Io.Writer, pt: Zcu.PerThread) std.Io.Writer.Error!void {
161	const zcu = pt.zcu;	161	const zcu = pt.zcu;
162	const ip = &zcu.intern_pool;	162	const ip = &zcu.intern_pool;
163	switch (ip.indexToKey(ty.toIntern())) {	163	switch (ip.indexToKey(ty.toIntern())) {

src/Value.zig+2-2

...	@@ -15,7 +15,7 @@ const Value = @This();	...	@@ -15,7 +15,7 @@ const Value = @This();
15		15
16	ip_index: InternPool.Index,	16	ip_index: InternPool.Index,
17		17
18	pub fn format(val: Value, writer: *std.io.Writer) !void {	18	pub fn format(val: Value, writer: *std.Io.Writer) !void {
19	_ = val;	19	_ = val;
20	_ = writer;	20	_ = writer;
21	@compileError("do not use format values directly; use either fmtDebug or fmtValue");	21	@compileError("do not use format values directly; use either fmtDebug or fmtValue");
...	@@ -23,7 +23,7 @@ pub fn format(val: Value, writer: *std.io.Writer) !void {	...	@@ -23,7 +23,7 @@ pub fn format(val: Value, writer: *std.io.Writer) !void {
23		23
24	/// This is a debug function. In order to print values in a meaningful way	24	/// This is a debug function. In order to print values in a meaningful way
25	/// we also need access to the type.	25	/// we also need access to the type.
26	pub fn dump(start_val: Value, w: std.io.Writer) std.io.Writer.Error!void {	26	pub fn dump(start_val: Value, w: std.Io.Writer) std.Io.Writer.Error!void {
27	try w.print("(interned: {})", .{start_val.toIntern()});	27	try w.print("(interned: {})", .{start_val.toIntern()});
28	}	28	}
29		29

src/Zcu.zig+5-5

...	@@ -15,7 +15,7 @@ const BigIntConst = std.math.big.int.Const;	...	@@ -15,7 +15,7 @@ const BigIntConst = std.math.big.int.Const;
15	const BigIntMutable = std.math.big.int.Mutable;	15	const BigIntMutable = std.math.big.int.Mutable;
16	const Target = std.Target;	16	const Target = std.Target;
17	const Ast = std.zig.Ast;	17	const Ast = std.zig.Ast;
18	const Writer = std.io.Writer;	18	const Writer = std.Io.Writer;
19		19
20	const Zcu = @This();	20	const Zcu = @This();
21	const Compilation = @import("Compilation.zig");	21	const Compilation = @import("Compilation.zig");
...	@@ -2872,7 +2872,7 @@ pub fn loadZirCache(gpa: Allocator, cache_file: std.fs.File) !Zir {	...	@@ -2872,7 +2872,7 @@ pub fn loadZirCache(gpa: Allocator, cache_file: std.fs.File) !Zir {
2872	};	2872	};
2873	}	2873	}
2874		2874
2875	pub fn loadZirCacheBody(gpa: Allocator, header: Zir.Header, cache_br: *std.io.Reader) !Zir {	2875	pub fn loadZirCacheBody(gpa: Allocator, header: Zir.Header, cache_br: *std.Io.Reader) !Zir {
2876	var instructions: std.MultiArrayList(Zir.Inst) = .{};	2876	var instructions: std.MultiArrayList(Zir.Inst) = .{};
2877	errdefer instructions.deinit(gpa);	2877	errdefer instructions.deinit(gpa);
2878		2878
...	@@ -2989,7 +2989,7 @@ pub fn saveZoirCache(cache_file: std.fs.File, stat: std.fs.File.Stat, zoir: Zoir	...	@@ -2989,7 +2989,7 @@ pub fn saveZoirCache(cache_file: std.fs.File, stat: std.fs.File.Stat, zoir: Zoir
2989	};	2989	};
2990	}	2990	}
2991		2991
2992	pub fn loadZoirCacheBody(gpa: Allocator, header: Zoir.Header, cache_br: *std.io.Reader) !Zoir {	2992	pub fn loadZoirCacheBody(gpa: Allocator, header: Zoir.Header, cache_br: *std.Io.Reader) !Zoir {
2993	var zoir: Zoir = .{	2993	var zoir: Zoir = .{
2994	.nodes = .empty,	2994	.nodes = .empty,
2995	.extra = &.{},	2995	.extra = &.{},
...	@@ -4318,7 +4318,7 @@ const FormatAnalUnit = struct {	...	@@ -4318,7 +4318,7 @@ const FormatAnalUnit = struct {
4318	zcu: *Zcu,	4318	zcu: *Zcu,
4319	};	4319	};
4320		4320
4321	fn formatAnalUnit(data: FormatAnalUnit, writer: *std.io.Writer) std.io.Writer.Error!void {	4321	fn formatAnalUnit(data: FormatAnalUnit, writer: *std.Io.Writer) std.Io.Writer.Error!void {
4322	const zcu = data.zcu;	4322	const zcu = data.zcu;
4323	const ip = &zcu.intern_pool;	4323	const ip = &zcu.intern_pool;
4324	switch (data.unit.unwrap()) {	4324	switch (data.unit.unwrap()) {
...	@@ -4344,7 +4344,7 @@ fn formatAnalUnit(data: FormatAnalUnit, writer: *std.io.Writer) std.io.Writer.Er	...	@@ -4344,7 +4344,7 @@ fn formatAnalUnit(data: FormatAnalUnit, writer: *std.io.Writer) std.io.Writer.Er
4344		4344
4345	const FormatDependee = struct { dependee: InternPool.Dependee, zcu: *Zcu };	4345	const FormatDependee = struct { dependee: InternPool.Dependee, zcu: *Zcu };
4346		4346
4347	fn formatDependee(data: FormatDependee, writer: *std.io.Writer) std.io.Writer.Error!void {	4347	fn formatDependee(data: FormatDependee, writer: *std.Io.Writer) std.Io.Writer.Error!void {
4348	const zcu = data.zcu;	4348	const zcu = data.zcu;
4349	const ip = &zcu.intern_pool;	4349	const ip = &zcu.intern_pool;
4350	switch (data.dependee) {	4350	switch (data.dependee) {

src/arch/riscv64/CodeGen.zig+5-5

src/arch/riscv64/Mir.zig+1-1

...	@@ -92,7 +92,7 @@ pub const Inst = struct {	...	@@ -92,7 +92,7 @@ pub const Inst = struct {
92	},	92	},
93	};	93	};
94		94
95	pub fn format(inst: Inst, writer: *std.io.Writer) std.io.Writer.Error!void {	95	pub fn format(inst: Inst, writer: *std.Io.Writer) std.Io.Writer.Error!void {
96	try writer.print("Tag: {s}, Data: {s}", .{ @tagName(inst.tag), @tagName(inst.data) });	96	try writer.print("Tag: {s}, Data: {s}", .{ @tagName(inst.tag), @tagName(inst.data) });
97	}	97	}
98	};	98	};

src/arch/x86_64/CodeGen.zig+2-2

...	@@ -6,7 +6,7 @@ const log = std.log.scoped(.codegen);	...	@@ -6,7 +6,7 @@ const log = std.log.scoped(.codegen);
6	const tracking_log = std.log.scoped(.tracking);	6	const tracking_log = std.log.scoped(.tracking);
7	const verbose_tracking_log = std.log.scoped(.verbose_tracking);	7	const verbose_tracking_log = std.log.scoped(.verbose_tracking);
8	const wip_mir_log = std.log.scoped(.wip_mir);	8	const wip_mir_log = std.log.scoped(.wip_mir);
9	const Writer = std.io.Writer;	9	const Writer = std.Io.Writer;
10		10
11	const Air = @import("../../Air.zig");	11	const Air = @import("../../Air.zig");
12	const Allocator = std.mem.Allocator;	12	const Allocator = std.mem.Allocator;
...	@@ -1102,7 +1102,7 @@ const FormatAirData = struct {	...	@@ -1102,7 +1102,7 @@ const FormatAirData = struct {
1102	self: *CodeGen,	1102	self: *CodeGen,
1103	inst: Air.Inst.Index,	1103	inst: Air.Inst.Index,
1104	};	1104	};
1105	fn formatAir(data: FormatAirData, w: *std.io.Writer) Writer.Error!void {	1105	fn formatAir(data: FormatAirData, w: *Writer) Writer.Error!void {
1106	data.self.air.writeInst(w, data.inst, data.self.pt, data.self.liveness);	1106	data.self.air.writeInst(w, data.inst, data.self.pt, data.self.liveness);
1107	}	1107	}
1108	fn fmtAir(self: *CodeGen, inst: Air.Inst.Index) std.fmt.Formatter(FormatAirData, formatAir) {	1108	fn fmtAir(self: *CodeGen, inst: Air.Inst.Index) std.fmt.Formatter(FormatAirData, formatAir) {

src/arch/x86_64/Disassembler.zig+9-11

...	@@ -287,13 +287,12 @@ const Prefixes = struct {	...	@@ -287,13 +287,12 @@ const Prefixes = struct {
287		287
288	fn parsePrefixes(dis: *Disassembler) !Prefixes {	288	fn parsePrefixes(dis: *Disassembler) !Prefixes {
289	const rex_prefix_mask: u4 = 0b0100;	289	const rex_prefix_mask: u4 = 0b0100;
290	var stream = std.io.fixedBufferStream(dis.code[dis.pos..]);	290	var reader: std.Io.Reader = .fixed(dis.code[dis.pos..]);
291	const reader = stream.reader();
292		291
293	var res: Prefixes = .{};	292	var res: Prefixes = .{};
294		293
295	while (true) {	294	while (true) {
296	const next_byte = try reader.readByte();	295	const next_byte = try reader.takeByte();
297	dis.pos += 1;	296	dis.pos += 1;
298		297
299	switch (next_byte) {	298	switch (next_byte) {
...	@@ -341,12 +340,11 @@ fn parseEncoding(dis: *Disassembler, prefixes: Prefixes) !?Encoding {	...	@@ -341,12 +340,11 @@ fn parseEncoding(dis: *Disassembler, prefixes: Prefixes) !?Encoding {
341	const o_mask: u8 = 0b1111_1000;	340	const o_mask: u8 = 0b1111_1000;
342		341
343	var opcode: [3]u8 = .{ 0, 0, 0 };	342	var opcode: [3]u8 = .{ 0, 0, 0 };
344	var stream = std.io.fixedBufferStream(dis.code[dis.pos..]);	343	var reader: std.Io.Reader = .fixed(dis.code[dis.pos..]);
345	const reader = stream.reader();
346		344
347	comptime var opc_count = 0;	345	comptime var opc_count = 0;
348	inline while (opc_count < 3) : (opc_count += 1) {	346	inline while (opc_count < 3) : (opc_count += 1) {
349	const byte = try reader.readByte();	347	const byte = try reader.takeByte();
350	opcode[opc_count] = byte;	348	opcode[opc_count] = byte;
351	dis.pos += 1;	349	dis.pos += 1;
352		350
...	@@ -410,11 +408,11 @@ fn parseImm(dis: *Disassembler, kind: Encoding.Op) !Immediate {	...	@@ -410,11 +408,11 @@ fn parseImm(dis: *Disassembler, kind: Encoding.Op) !Immediate {
410	}	408	}
411		409
412	fn parseOffset(dis: *Disassembler) !u64 {	410	fn parseOffset(dis: *Disassembler) !u64 {
413	var stream = std.io.fixedBufferStream(dis.code[dis.pos..]);	411	var reader: std.Io.Reader = .fixed(dis.code);
414	const reader = stream.reader();	412	reader.seek = dis.pos;
415	const offset = try reader.readInt(u64, .little);	413	defer dis.pos = reader.seek;
416	dis.pos += 8;	414
417	return offset;	415	return reader.takeInt(u64, .little);
418	}	416	}
419		417
420	const ModRm = packed struct {	418	const ModRm = packed struct {

src/arch/x86_64/Emit.zig+1-1

...	@@ -698,7 +698,7 @@ fn encodeInst(emit: *Emit, lowered_inst: Instruction, reloc_info: []const RelocI	...	@@ -698,7 +698,7 @@ fn encodeInst(emit: *Emit, lowered_inst: Instruction, reloc_info: []const RelocI
698	const gpa = comp.gpa;	698	const gpa = comp.gpa;
699	const start_offset: u32 = @intCast(emit.code.items.len);	699	const start_offset: u32 = @intCast(emit.code.items.len);
700	{	700	{
701	var aw: std.io.Writer.Allocating = .fromArrayList(gpa, emit.code);	701	var aw: std.Io.Writer.Allocating = .fromArrayList(gpa, emit.code);
702	defer emit.code.* = aw.toArrayList();	702	defer emit.code.* = aw.toArrayList();
703	lowered_inst.encode(&aw.writer, .{}) catch \|err\| switch (err) {	703	lowered_inst.encode(&aw.writer, .{}) catch \|err\| switch (err) {
704	error.WriteFailed => return error.OutOfMemory,	704	error.WriteFailed => return error.OutOfMemory,

src/arch/x86_64/Encoding.zig+2-2

...	@@ -158,7 +158,7 @@ pub fn modRmExt(encoding: Encoding) u3 {	...	@@ -158,7 +158,7 @@ pub fn modRmExt(encoding: Encoding) u3 {
158	};	158	};
159	}	159	}
160		160
161	pub fn format(encoding: Encoding, writer: *std.io.Writer) std.io.Writer.Error!void {	161	pub fn format(encoding: Encoding, writer: *std.Io.Writer) std.Io.Writer.Error!void {
162	var opc = encoding.opcode();	162	var opc = encoding.opcode();
163	if (encoding.data.mode.isVex()) {	163	if (encoding.data.mode.isVex()) {
164	try writer.writeAll("VEX.");	164	try writer.writeAll("VEX.");
...	@@ -1016,7 +1016,7 @@ fn estimateInstructionLength(prefix: Prefix, encoding: Encoding, ops: []const Op	...	@@ -1016,7 +1016,7 @@ fn estimateInstructionLength(prefix: Prefix, encoding: Encoding, ops: []const Op
1016	// By using a buffer with maximum length of encoded instruction, we can use	1016	// By using a buffer with maximum length of encoded instruction, we can use
1017	// the `end` field of the Writer for the count.	1017	// the `end` field of the Writer for the count.
1018	var buf: [16]u8 = undefined;	1018	var buf: [16]u8 = undefined;
1019	var trash: std.io.Writer.Discarding = .init(&buf);	1019	var trash: std.Io.Writer.Discarding = .init(&buf);
1020	inst.encode(&trash.writer, .{	1020	inst.encode(&trash.writer, .{
1021	.allow_frame_locs = true,	1021	.allow_frame_locs = true,
1022	.allow_symbols = true,	1022	.allow_symbols = true,

src/arch/x86_64/bits.zig+2-2

...	@@ -827,7 +827,7 @@ pub const Memory = struct {	...	@@ -827,7 +827,7 @@ pub const Memory = struct {
827	};	827	};
828	}	828	}
829		829
830	pub fn format(s: Size, writer: *std.io.Writer) std.io.Writer.Error!void {	830	pub fn format(s: Size, writer: *std.Io.Writer) std.Io.Writer.Error!void {
831	if (s == .none) return;	831	if (s == .none) return;
832	try writer.writeAll(@tagName(s));	832	try writer.writeAll(@tagName(s));
833	switch (s) {	833	switch (s) {
...	@@ -892,7 +892,7 @@ pub const Immediate = union(enum) {	...	@@ -892,7 +892,7 @@ pub const Immediate = union(enum) {
892	return .{ .signed = x };	892	return .{ .signed = x };
893	}	893	}
894		894
895	pub fn format(imm: Immediate, writer: *std.io.Writer) std.io.Writer.Error!void {	895	pub fn format(imm: Immediate, writer: *std.Io.Writer) std.Io.Writer.Error!void {
896	switch (imm) {	896	switch (imm) {
897	inline else => \|int\| try writer.print("{d}", .{int}),	897	inline else => \|int\| try writer.print("{d}", .{int}),
898	.nav => \|nav_off\| try writer.print("Nav({d}) + {d}", .{ @intFromEnum(nav_off.nav), nav_off.off }),	898	.nav => \|nav_off\| try writer.print("Nav({d}) + {d}", .{ @intFromEnum(nav_off.nav), nav_off.off }),

src/arch/x86_64/encoder.zig+1-1

...	@@ -3,7 +3,7 @@ const assert = std.debug.assert;	...	@@ -3,7 +3,7 @@ const assert = std.debug.assert;
3	const log = std.log.scoped(.x86_64_encoder);	3	const log = std.log.scoped(.x86_64_encoder);
4	const math = std.math;	4	const math = std.math;
5	const testing = std.testing;	5	const testing = std.testing;
6	const Writer = std.io.Writer;	6	const Writer = std.Io.Writer;
7		7
8	const bits = @import("bits.zig");	8	const bits = @import("bits.zig");
9	const Encoding = @import("Encoding.zig");	9	const Encoding = @import("Encoding.zig");

src/codegen/c.zig+10-10

...	@@ -4,7 +4,7 @@ const assert = std.debug.assert;	...	@@ -4,7 +4,7 @@ const assert = std.debug.assert;
4	const mem = std.mem;	4	const mem = std.mem;
5	const log = std.log.scoped(.c);	5	const log = std.log.scoped(.c);
6	const Allocator = mem.Allocator;	6	const Allocator = mem.Allocator;
7	const Writer = std.io.Writer;	7	const Writer = std.Io.Writer;
8		8
9	const dev = @import("../dev.zig");	9	const dev = @import("../dev.zig");
10	const link = @import("../link.zig");	10	const link = @import("../link.zig");
...	@@ -345,15 +345,15 @@ fn isReservedIdent(ident: []const u8) bool {	...	@@ -345,15 +345,15 @@ fn isReservedIdent(ident: []const u8) bool {
345	} else return reserved_idents.has(ident);	345	} else return reserved_idents.has(ident);
346	}	346	}
347		347
348	fn formatIdentSolo(ident: []const u8, w: *std.io.Writer) std.io.Writer.Error!void {	348	fn formatIdentSolo(ident: []const u8, w: *Writer) Writer.Error!void {
349	return formatIdentOptions(ident, w, true);	349	return formatIdentOptions(ident, w, true);
350	}	350	}
351		351
352	fn formatIdentUnsolo(ident: []const u8, w: *std.io.Writer) std.io.Writer.Error!void {	352	fn formatIdentUnsolo(ident: []const u8, w: *Writer) Writer.Error!void {
353	return formatIdentOptions(ident, w, false);	353	return formatIdentOptions(ident, w, false);
354	}	354	}
355		355
356	fn formatIdentOptions(ident: []const u8, w: *std.io.Writer, solo: bool) std.io.Writer.Error!void {	356	fn formatIdentOptions(ident: []const u8, w: *Writer, solo: bool) Writer.Error!void {
357	if (solo and isReservedIdent(ident)) {	357	if (solo and isReservedIdent(ident)) {
358	try w.writeAll("zig_e_");	358	try w.writeAll("zig_e_");
359	}	359	}
...	@@ -384,7 +384,7 @@ const CTypePoolStringFormatData = struct {	...	@@ -384,7 +384,7 @@ const CTypePoolStringFormatData = struct {
384	ctype_pool: *const CType.Pool,	384	ctype_pool: *const CType.Pool,
385	solo: bool,	385	solo: bool,
386	};	386	};
387	fn formatCTypePoolString(data: CTypePoolStringFormatData, w: *std.io.Writer) std.io.Writer.Error!void {	387	fn formatCTypePoolString(data: CTypePoolStringFormatData, w: *Writer) Writer.Error!void {
388	if (data.ctype_pool_string.toSlice(data.ctype_pool)) \|slice\|	388	if (data.ctype_pool_string.toSlice(data.ctype_pool)) \|slice\|
389	try formatIdentOptions(slice, w, data.solo)	389	try formatIdentOptions(slice, w, data.solo)
390	else	390	else
...	@@ -711,8 +711,8 @@ pub const Function = struct {	...	@@ -711,8 +711,8 @@ pub const Function = struct {
711	/// It is not available when generating .h file.	711	/// It is not available when generating .h file.
712	pub const Object = struct {	712	pub const Object = struct {
713	dg: DeclGen,	713	dg: DeclGen,
714	code_header: std.io.Writer.Allocating,	714	code_header: Writer.Allocating,
715	code: std.io.Writer.Allocating,	715	code: Writer.Allocating,
716	indent_counter: usize,	716	indent_counter: usize,
717		717
718	const indent_width = 1;	718	const indent_width = 1;
...	@@ -748,7 +748,7 @@ pub const DeclGen = struct {	...	@@ -748,7 +748,7 @@ pub const DeclGen = struct {
748	pass: Pass,	748	pass: Pass,
749	is_naked_fn: bool,	749	is_naked_fn: bool,
750	expected_block: ?u32,	750	expected_block: ?u32,
751	fwd_decl: std.io.Writer.Allocating,	751	fwd_decl: Writer.Allocating,
752	error_msg: ?*Zcu.ErrorMsg,	752	error_msg: ?*Zcu.ErrorMsg,
753	ctype_pool: CType.Pool,	753	ctype_pool: CType.Pool,
754	scratch: std.ArrayListUnmanaged(u32),	754	scratch: std.ArrayListUnmanaged(u32),
...	@@ -8287,7 +8287,7 @@ const FormatStringContext = struct {	...	@@ -8287,7 +8287,7 @@ const FormatStringContext = struct {
8287	sentinel: ?u8,	8287	sentinel: ?u8,
8288	};	8288	};
8289		8289
8290	fn formatStringLiteral(data: FormatStringContext, w: *std.io.Writer) std.io.Writer.Error!void {	8290	fn formatStringLiteral(data: FormatStringContext, w: *Writer) Writer.Error!void {
8291	var literal: StringLiteral = .init(w, data.str.len + @intFromBool(data.sentinel != null));	8291	var literal: StringLiteral = .init(w, data.str.len + @intFromBool(data.sentinel != null));
8292	try literal.start();	8292	try literal.start();
8293	for (data.str) \|c\| try literal.writeChar(c);	8293	for (data.str) \|c\| try literal.writeChar(c);
...	@@ -8314,7 +8314,7 @@ const FormatIntLiteralContext = struct {	...	@@ -8314,7 +8314,7 @@ const FormatIntLiteralContext = struct {
8314	base: u8,	8314	base: u8,
8315	case: std.fmt.Case,	8315	case: std.fmt.Case,
8316	};	8316	};
8317	fn formatIntLiteral(data: FormatIntLiteralContext, w: *std.io.Writer) std.io.Writer.Error!void {	8317	fn formatIntLiteral(data: FormatIntLiteralContext, w: *Writer) Writer.Error!void {
8318	const pt = data.dg.pt;	8318	const pt = data.dg.pt;
8319	const zcu = pt.zcu;	8319	const zcu = pt.zcu;
8320	const target = &data.dg.mod.resolved_target.result;	8320	const target = &data.dg.mod.resolved_target.result;

src/codegen/c/Type.zig+1-1

...	@@ -3396,7 +3396,7 @@ pub const AlignAs = packed struct {	...	@@ -3396,7 +3396,7 @@ pub const AlignAs = packed struct {
3396		3396
3397	const std = @import("std");	3397	const std = @import("std");
3398	const assert = std.debug.assert;	3398	const assert = std.debug.assert;
3399	const Writer = std.io.Writer;	3399	const Writer = std.Io.Writer;
3400		3400
3401	const CType = @This();	3401	const CType = @This();
3402	const InternPool = @import("../../InternPool.zig");	3402	const InternPool = @import("../../InternPool.zig");

src/codegen/llvm.zig+1-1

...	@@ -2684,7 +2684,7 @@ pub const Object = struct {	...	@@ -2684,7 +2684,7 @@ pub const Object = struct {
2684	}	2684	}
2685		2685
2686	fn allocTypeName(o: *Object, pt: Zcu.PerThread, ty: Type) Allocator.Error![:0]const u8 {	2686	fn allocTypeName(o: *Object, pt: Zcu.PerThread, ty: Type) Allocator.Error![:0]const u8 {
2687	var aw: std.io.Writer.Allocating = .init(o.gpa);	2687	var aw: std.Io.Writer.Allocating = .init(o.gpa);
2688	defer aw.deinit();	2688	defer aw.deinit();
2689	ty.print(&aw.writer, pt) catch \|err\| switch (err) {	2689	ty.print(&aw.writer, pt) catch \|err\| switch (err) {
2690	error.WriteFailed => return error.OutOfMemory,	2690	error.WriteFailed => return error.OutOfMemory,

src/codegen/spirv/CodeGen.zig+1-1

...	@@ -1211,7 +1211,7 @@ fn constantNavRef(cg: *CodeGen, ty: Type, nav_index: InternPool.Nav.Index) !Id {	...	@@ -1211,7 +1211,7 @@ fn constantNavRef(cg: *CodeGen, ty: Type, nav_index: InternPool.Nav.Index) !Id {
1211	// Turn a Zig type's name into a cache reference.	1211	// Turn a Zig type's name into a cache reference.
1212	fn resolveTypeName(cg: *CodeGen, ty: Type) ![]const u8 {	1212	fn resolveTypeName(cg: *CodeGen, ty: Type) ![]const u8 {
1213	const gpa = cg.module.gpa;	1213	const gpa = cg.module.gpa;
1214	var aw: std.io.Writer.Allocating = .init(gpa);	1214	var aw: std.Io.Writer.Allocating = .init(gpa);
1215	defer aw.deinit();	1215	defer aw.deinit();
1216	ty.print(&aw.writer, cg.pt) catch \|err\| switch (err) {	1216	ty.print(&aw.writer, cg.pt) catch \|err\| switch (err) {
1217	error.WriteFailed => return error.OutOfMemory,	1217	error.WriteFailed => return error.OutOfMemory,

src/codegen/spirv/spec.zig+1-1

...	@@ -18,7 +18,7 @@ pub const Id = enum(Word) {	...	@@ -18,7 +18,7 @@ pub const Id = enum(Word) {
18	none,	18	none,
19	_,	19	_,
20		20
21	pub fn format(self: Id, writer: *std.io.Writer) std.io.Writer.Error!void {	21	pub fn format(self: Id, writer: *std.Io.Writer) std.Io.Writer.Error!void {
22	switch (self) {	22	switch (self) {
23	.none => try writer.writeAll("(none)"),	23	.none => try writer.writeAll("(none)"),
24	else => try writer.print("%{d}", .{@intFromEnum(self)}),	24	else => try writer.print("%{d}", .{@intFromEnum(self)}),

src/crash_report.zig-1

...	@@ -2,7 +2,6 @@ const std = @import("std");	...	@@ -2,7 +2,6 @@ const std = @import("std");
2	const builtin = @import("builtin");	2	const builtin = @import("builtin");
3	const build_options = @import("build_options");	3	const build_options = @import("build_options");
4	const debug = std.debug;	4	const debug = std.debug;
5	const io = std.io;
6	const print_zir = @import("print_zir.zig");	5	const print_zir = @import("print_zir.zig");
7	const windows = std.os.windows;	6	const windows = std.os.windows;
8	const posix = std.posix;	7	const posix = std.posix;

src/libs/mingw.zig+1-1

...	@@ -325,7 +325,7 @@ pub fn buildImportLib(comp: *Compilation, lib_name: []const u8) !void {	...	@@ -325,7 +325,7 @@ pub fn buildImportLib(comp: *Compilation, lib_name: []const u8) !void {
325		325
326	for (aro_comp.diagnostics.list.items) \|diagnostic\| {	326	for (aro_comp.diagnostics.list.items) \|diagnostic\| {
327	if (diagnostic.kind == .@"fatal error" or diagnostic.kind == .@"error") {	327	if (diagnostic.kind == .@"fatal error" or diagnostic.kind == .@"error") {
328	aro.Diagnostics.render(&aro_comp, std.io.tty.detectConfig(std.fs.File.stderr()));	328	aro.Diagnostics.render(&aro_comp, std.Io.tty.detectConfig(std.fs.File.stderr()));
329	return error.AroPreprocessorFailed;	329	return error.AroPreprocessorFailed;
330	}	330	}
331	}	331	}

src/link/C.zig+4-4

src/link/Coff.zig+1-1

...	@@ -3039,7 +3039,7 @@ const ImportTable = struct {	...	@@ -3039,7 +3039,7 @@ const ImportTable = struct {
3039	itab: ImportTable,	3039	itab: ImportTable,
3040	ctx: Context,	3040	ctx: Context,
3041		3041
3042	fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	3042	fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
3043	const lib_name = f.ctx.coff.temp_strtab.getAssumeExists(f.ctx.name_off);	3043	const lib_name = f.ctx.coff.temp_strtab.getAssumeExists(f.ctx.name_off);
3044	const base_vaddr = getBaseAddress(f.ctx);	3044	const base_vaddr = getBaseAddress(f.ctx);
3045	try writer.print("IAT({s}.dll) @{x}:", .{ lib_name, base_vaddr });	3045	try writer.print("IAT({s}.dll) @{x}:", .{ lib_name, base_vaddr });

src/link/Elf.zig+5-5

src/link/Elf/Archive.zig+2-2

...	@@ -204,7 +204,7 @@ pub const ArSymtab = struct {	...	@@ -204,7 +204,7 @@ pub const ArSymtab = struct {
204	ar: ArSymtab,	204	ar: ArSymtab,
205	elf_file: *Elf,	205	elf_file: *Elf,
206		206
207	fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	207	fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
208	const ar = f.ar;	208	const ar = f.ar;
209	const elf_file = f.elf_file;	209	const elf_file = f.elf_file;
210	for (ar.symtab.items, 0..) \|entry, i\| {	210	for (ar.symtab.items, 0..) \|entry, i\| {
...	@@ -259,7 +259,7 @@ pub const ArStrtab = struct {	...	@@ -259,7 +259,7 @@ pub const ArStrtab = struct {
259	try writer.writeAll(ar.buffer.items);	259	try writer.writeAll(ar.buffer.items);
260	}	260	}
261		261
262	pub fn format(ar: ArStrtab, writer: *std.io.Writer) std.io.Writer.Error!void {	262	pub fn format(ar: ArStrtab, writer: *std.Io.Writer) std.Io.Writer.Error!void {
263	try writer.print("{f}", .{std.ascii.hexEscape(ar.buffer.items, .lower)});	263	try writer.print("{f}", .{std.ascii.hexEscape(ar.buffer.items, .lower)});
264	}	264	}
265	};	265	};

src/link/Elf/AtomList.zig+1-1

...	@@ -170,7 +170,7 @@ const Format = struct {	...	@@ -170,7 +170,7 @@ const Format = struct {
170	atom_list: AtomList,	170	atom_list: AtomList,
171	elf_file: *Elf,	171	elf_file: *Elf,
172		172
173	fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	173	fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
174	const list = f.atom_list;	174	const list = f.atom_list;
175	try writer.print("list : @{x} : shdr({d}) : align({x}) : size({x})", .{	175	try writer.print("list : @{x} : shdr({d}) : align({x}) : size({x})", .{
176	list.address(f.elf_file),	176	list.address(f.elf_file),

src/link/Elf/LinkerDefined.zig+1-1

...	@@ -448,7 +448,7 @@ const Format = struct {	...	@@ -448,7 +448,7 @@ const Format = struct {
448	self: *LinkerDefined,	448	self: *LinkerDefined,
449	elf_file: *Elf,	449	elf_file: *Elf,
450		450
451	fn symtab(ctx: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	451	fn symtab(ctx: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
452	const self = ctx.self;	452	const self = ctx.self;
453	const elf_file = ctx.elf_file;	453	const elf_file = ctx.elf_file;
454	try writer.writeAll(" globals\n");	454	try writer.writeAll(" globals\n");

src/link/Elf/Merge.zig+2-2

...	@@ -168,7 +168,7 @@ pub const Section = struct {	...	@@ -168,7 +168,7 @@ pub const Section = struct {
168	msec: Section,	168	msec: Section,
169	elf_file: *Elf,	169	elf_file: *Elf,
170		170
171	pub fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	171	pub fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
172	const msec = f.msec;	172	const msec = f.msec;
173	const elf_file = f.elf_file;	173	const elf_file = f.elf_file;
174	try writer.print("{s} : @{x} : size({x}) : align({x}) : entsize({x}) : type({x}) : flags({x})\n", .{	174	try writer.print("{s} : @{x} : size({x}) : align({x}) : entsize({x}) : type({x}) : flags({x})\n", .{
...	@@ -222,7 +222,7 @@ pub const Subsection = struct {	...	@@ -222,7 +222,7 @@ pub const Subsection = struct {
222	msub: Subsection,	222	msub: Subsection,
223	elf_file: *Elf,	223	elf_file: *Elf,
224		224
225	pub fn default(ctx: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	225	pub fn default(ctx: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
226	const msub = ctx.msub;	226	const msub = ctx.msub;
227	const elf_file = ctx.elf_file;	227	const elf_file = ctx.elf_file;
228	try writer.print("@{x} : align({x}) : size({x})", .{	228	try writer.print("@{x} : align({x}) : size({x})", .{

src/link/Elf/Object.zig+6-6

...	@@ -1442,7 +1442,7 @@ const Format = struct {	...	@@ -1442,7 +1442,7 @@ const Format = struct {
1442	object: *Object,	1442	object: *Object,
1443	elf_file: *Elf,	1443	elf_file: *Elf,
1444		1444
1445	fn symtab(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	1445	fn symtab(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
1446	const object = f.object;	1446	const object = f.object;
1447	const elf_file = f.elf_file;	1447	const elf_file = f.elf_file;
1448	try writer.writeAll(" locals\n");	1448	try writer.writeAll(" locals\n");
...	@@ -1461,7 +1461,7 @@ const Format = struct {	...	@@ -1461,7 +1461,7 @@ const Format = struct {
1461	}	1461	}
1462	}	1462	}
1463		1463
1464	fn atoms(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	1464	fn atoms(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
1465	const object = f.object;	1465	const object = f.object;
1466	try writer.writeAll(" atoms\n");	1466	try writer.writeAll(" atoms\n");
1467	for (object.atoms_indexes.items) \|atom_index\| {	1467	for (object.atoms_indexes.items) \|atom_index\| {
...	@@ -1470,7 +1470,7 @@ const Format = struct {	...	@@ -1470,7 +1470,7 @@ const Format = struct {
1470	}	1470	}
1471	}	1471	}
1472		1472
1473	fn cies(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	1473	fn cies(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
1474	const object = f.object;	1474	const object = f.object;
1475	try writer.writeAll(" cies\n");	1475	try writer.writeAll(" cies\n");
1476	for (object.cies.items, 0..) \|cie, i\| {	1476	for (object.cies.items, 0..) \|cie, i\| {
...	@@ -1478,7 +1478,7 @@ const Format = struct {	...	@@ -1478,7 +1478,7 @@ const Format = struct {
1478	}	1478	}
1479	}	1479	}
1480		1480
1481	fn fdes(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	1481	fn fdes(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
1482	const object = f.object;	1482	const object = f.object;
1483	try writer.writeAll(" fdes\n");	1483	try writer.writeAll(" fdes\n");
1484	for (object.fdes.items, 0..) \|fde, i\| {	1484	for (object.fdes.items, 0..) \|fde, i\| {
...	@@ -1486,7 +1486,7 @@ const Format = struct {	...	@@ -1486,7 +1486,7 @@ const Format = struct {
1486	}	1486	}
1487	}	1487	}
1488		1488
1489	fn groups(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	1489	fn groups(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
1490	const object = f.object;	1490	const object = f.object;
1491	const elf_file = f.elf_file;	1491	const elf_file = f.elf_file;
1492	try writer.writeAll(" groups\n");	1492	try writer.writeAll(" groups\n");
...	@@ -1536,7 +1536,7 @@ pub fn fmtPath(self: Object) std.fmt.Formatter(Object, formatPath) {	...	@@ -1536,7 +1536,7 @@ pub fn fmtPath(self: Object) std.fmt.Formatter(Object, formatPath) {
1536	return .{ .data = self };	1536	return .{ .data = self };
1537	}	1537	}
1538		1538
1539	fn formatPath(object: Object, writer: *std.io.Writer) std.io.Writer.Error!void {	1539	fn formatPath(object: Object, writer: *std.Io.Writer) std.Io.Writer.Error!void {
1540	if (object.archive) \|ar\| {	1540	if (object.archive) \|ar\| {
1541	try writer.print("{f}({f})", .{ ar.path, object.path });	1541	try writer.print("{f}({f})", .{ ar.path, object.path });
1542	} else {	1542	} else {

src/link/Elf/SharedObject.zig+1-1

...	@@ -520,7 +520,7 @@ const Format = struct {	...	@@ -520,7 +520,7 @@ const Format = struct {
520	shared: SharedObject,	520	shared: SharedObject,
521	elf_file: *Elf,	521	elf_file: *Elf,
522		522
523	fn symtab(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	523	fn symtab(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
524	const shared = f.shared;	524	const shared = f.shared;
525	const elf_file = f.elf_file;	525	const elf_file = f.elf_file;
526	try writer.writeAll(" globals\n");	526	try writer.writeAll(" globals\n");

src/link/Elf/Symbol.zig+2-2

...	@@ -320,7 +320,7 @@ const Format = struct {	...	@@ -320,7 +320,7 @@ const Format = struct {
320	symbol: Symbol,	320	symbol: Symbol,
321	elf_file: *Elf,	321	elf_file: *Elf,
322		322
323	fn name(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	323	fn name(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
324	const elf_file = f.elf_file;	324	const elf_file = f.elf_file;
325	const symbol = f.symbol;	325	const symbol = f.symbol;
326	try writer.writeAll(symbol.name(elf_file));	326	try writer.writeAll(symbol.name(elf_file));
...	@@ -335,7 +335,7 @@ const Format = struct {	...	@@ -335,7 +335,7 @@ const Format = struct {
335	}	335	}
336	}	336	}
337		337
338	fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	338	fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
339	const symbol = f.symbol;	339	const symbol = f.symbol;
340	const elf_file = f.elf_file;	340	const elf_file = f.elf_file;
341	try writer.print("%{d} : {f} : @{x}", .{	341	try writer.print("%{d} : {f} : @{x}", .{

src/link/Elf/Thunk.zig+1-1

...	@@ -76,7 +76,7 @@ const Format = struct {	...	@@ -76,7 +76,7 @@ const Format = struct {
76	thunk: Thunk,	76	thunk: Thunk,
77	elf_file: *Elf,	77	elf_file: *Elf,
78		78
79	fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	79	fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
80	const thunk = f.thunk;	80	const thunk = f.thunk;
81	const elf_file = f.elf_file;	81	const elf_file = f.elf_file;
82	try writer.print("@{x} : size({x})\n", .{ thunk.value, thunk.size(elf_file) });	82	try writer.print("@{x} : size({x})\n", .{ thunk.value, thunk.size(elf_file) });

src/link/Elf/ZigObject.zig+2-2

...	@@ -2201,7 +2201,7 @@ const Format = struct {	...	@@ -2201,7 +2201,7 @@ const Format = struct {
2201	self: *ZigObject,	2201	self: *ZigObject,
2202	elf_file: *Elf,	2202	elf_file: *Elf,
2203		2203
2204	fn symtab(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	2204	fn symtab(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
2205	const self = f.self;	2205	const self = f.self;
2206	const elf_file = f.elf_file;	2206	const elf_file = f.elf_file;
2207	try writer.writeAll(" locals\n");	2207	try writer.writeAll(" locals\n");
...	@@ -2216,7 +2216,7 @@ const Format = struct {	...	@@ -2216,7 +2216,7 @@ const Format = struct {
2216	}	2216	}
2217	}	2217	}
2218		2218
2219	fn atoms(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	2219	fn atoms(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
2220	try writer.writeAll(" atoms\n");	2220	try writer.writeAll(" atoms\n");
2221	for (f.self.atoms_indexes.items) \|atom_index\| {	2221	for (f.self.atoms_indexes.items) \|atom_index\| {
2222	const atom_ptr = f.self.atom(atom_index) orelse continue;	2222	const atom_ptr = f.self.atom(atom_index) orelse continue;

src/link/Elf/eh_frame.zig+6-7

 @@ -58,7 +58,7 @@ pub const Fde = struct {
         fde: Fde,
         elf_file: *Elf,
-        fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {
+        fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
             const fde = f.fde;
             const elf_file = f.elf_file;
             const base_addr = fde.address(elf_file);
 @@ -141,7 +141,7 @@ pub const Cie = struct {
         cie: Cie,
         elf_file: *Elf,
-        fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {
+        fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
             const cie = f.cie;
             const elf_file = f.elf_file;
             const base_addr = cie.address(elf_file);
 @@ -167,15 +167,14 @@ pub const Iterator = struct {
     pub fn next(it: *Iterator) !?Record {
         if (it.pos >= it.data.len) return null;
-        var stream = std.io.fixedBufferStream(it.data[it.pos..]);
+        var reader: std.Io.Reader = .fixed(it.data[it.pos..]);
-        const reader = stream.reader();
-        const size = try reader.readInt(u32, .little);
+        const size = try reader.takeInt(u32, .little);
         if (size == 0) return null;
         if (size == 0xFFFFFFFF) @panic("TODO");
-        const id = try reader.readInt(u32, .little);
+        const id = try reader.takeInt(u32, .little);
-        const record = Record{
+        const record: Record = .{
             .tag = if (id == 0) .cie else .fde,
             .offset = it.pos,
             .size = size,

src/link/Elf/file.zig+1-1

...	@@ -14,7 +14,7 @@ pub const File = union(enum) {	...	@@ -14,7 +14,7 @@ pub const File = union(enum) {
14	return .{ .data = file };	14	return .{ .data = file };
15	}	15	}
16		16
17	fn formatPath(file: File, writer: *std.io.Writer) std.io.Writer.Error!void {	17	fn formatPath(file: File, writer: *std.Io.Writer) std.Io.Writer.Error!void {
18	switch (file) {	18	switch (file) {
19	.zig_object => \|zo\| try writer.writeAll(zo.basename),	19	.zig_object => \|zo\| try writer.writeAll(zo.basename),
20	.linker_defined => try writer.writeAll("(linker defined)"),	20	.linker_defined => try writer.writeAll("(linker defined)"),

src/link/Elf/gc.zig+1-1

...	@@ -169,7 +169,7 @@ const Level = struct {	...	@@ -169,7 +169,7 @@ const Level = struct {
169	self.value += 1;	169	self.value += 1;
170	}	170	}
171		171
172	pub fn format(self: const @This(), w: std.io.Writer) std.io.Writer.Error!void {	172	pub fn format(self: const @This(), w: std.Io.Writer) std.Io.Writer.Error!void {
173	try w.splatByteAll(' ', self.value);	173	try w.splatByteAll(' ', self.value);
174	}	174	}
175	};	175	};

src/link/Elf/relocation.zig+1-1

...	@@ -160,7 +160,7 @@ pub fn fmtRelocType(r_type: u32, cpu_arch: std.Target.Cpu.Arch) std.fmt.Formatte	...	@@ -160,7 +160,7 @@ pub fn fmtRelocType(r_type: u32, cpu_arch: std.Target.Cpu.Arch) std.fmt.Formatte
160	} };	160	} };
161	}	161	}
162		162
163	fn formatRelocType(ctx: FormatRelocTypeCtx, writer: *std.io.Writer) std.io.Writer.Error!void {	163	fn formatRelocType(ctx: FormatRelocTypeCtx, writer: *std.Io.Writer) std.Io.Writer.Error!void {
164	const r_type = ctx.r_type;	164	const r_type = ctx.r_type;
165	switch (ctx.cpu_arch) {	165	switch (ctx.cpu_arch) {
166	.x86_64 => try writer.print("R_X86_64_{s}", .{@tagName(@as(elf.R_X86_64, @enumFromInt(r_type)))}),	166	.x86_64 => try writer.print("R_X86_64_{s}", .{@tagName(@as(elf.R_X86_64, @enumFromInt(r_type)))}),

src/link/Elf/synthetic_sections.zig+2-2

...	@@ -605,7 +605,7 @@ pub const GotSection = struct {	...	@@ -605,7 +605,7 @@ pub const GotSection = struct {
605	got: GotSection,	605	got: GotSection,
606	elf_file: *Elf,	606	elf_file: *Elf,
607		607
608	pub fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	608	pub fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
609	const got = f.got;	609	const got = f.got;
610	const elf_file = f.elf_file;	610	const elf_file = f.elf_file;
611	try writer.writeAll("GOT\n");	611	try writer.writeAll("GOT\n");
...	@@ -741,7 +741,7 @@ pub const PltSection = struct {	...	@@ -741,7 +741,7 @@ pub const PltSection = struct {
741	plt: PltSection,	741	plt: PltSection,
742	elf_file: *Elf,	742	elf_file: *Elf,
743		743
744	pub fn default(f: Format, writer: *std.io.Writer) std.io.Writer.Error!void {	744	pub fn default(f: Format, writer: *std.Io.Writer) std.Io.Writer.Error!void {
745	const plt = f.plt;	745	const plt = f.plt;
746	const elf_file = f.elf_file;	746	const elf_file = f.elf_file;
747	try writer.writeAll("PLT\n");	747	try writer.writeAll("PLT\n");

src/link/Lld.zig+4-2

...	@@ -1650,7 +1650,8 @@ fn spawnLld(	...	@@ -1650,7 +1650,8 @@ fn spawnLld(
1650	child.stderr_behavior = .Pipe;	1650	child.stderr_behavior = .Pipe;
1651		1651
1652	child.spawn() catch \|err\| break :term err;	1652	child.spawn() catch \|err\| break :term err;
1653	stderr = try child.stderr.?.deprecatedReader().readAllAlloc(comp.gpa, std.math.maxInt(usize));	1653	var stderr_reader = child.stderr.?.readerStreaming(&.{});
		1654	stderr = try stderr_reader.interface.allocRemaining(comp.gpa, .unlimited);
1654	break :term child.wait();	1655	break :term child.wait();
1655	}) catch \|first_err\| term: {	1656	}) catch \|first_err\| term: {
1656	const err = switch (first_err) {	1657	const err = switch (first_err) {
...	@@ -1699,7 +1700,8 @@ fn spawnLld(	...	@@ -1699,7 +1700,8 @@ fn spawnLld(
1699	rsp_child.stderr_behavior = .Pipe;	1700	rsp_child.stderr_behavior = .Pipe;
1700		1701
1701	rsp_child.spawn() catch \|err\| break :err err;	1702	rsp_child.spawn() catch \|err\| break :err err;
1702	stderr = try rsp_child.stderr.?.deprecatedReader().readAllAlloc(comp.gpa, std.math.maxInt(usize));	1703	var stderr_reader = rsp_child.stderr.?.readerStreaming(&.{});
		1704	stderr = try stderr_reader.interface.allocRemaining(comp.gpa, .unlimited);
1703	break :term rsp_child.wait() catch \|err\| break :err err;	1705	break :term rsp_child.wait() catch \|err\| break :err err;
1704	}	1706	}
1705	},	1707	},

src/link/MachO.zig+1-1

...	@@ -4361,7 +4361,7 @@ fn inferSdkVersion(comp: *Compilation, sdk_layout: SdkLayout) ?std.SemanticVersi	...	@@ -4361,7 +4361,7 @@ fn inferSdkVersion(comp: *Compilation, sdk_layout: SdkLayout) ?std.SemanticVersi
4361	// The file/property is also available with vendored libc.	4361	// The file/property is also available with vendored libc.
4362	fn readSdkVersionFromSettings(arena: Allocator, dir: []const u8) ![]const u8 {	4362	fn readSdkVersionFromSettings(arena: Allocator, dir: []const u8) ![]const u8 {
4363	const sdk_path = try fs.path.join(arena, &.{ dir, "SDKSettings.json" });	4363	const sdk_path = try fs.path.join(arena, &.{ dir, "SDKSettings.json" });
4364	const contents = try fs.cwd().readFileAlloc(arena, sdk_path, std.math.maxInt(u16));	4364	const contents = try fs.cwd().readFileAlloc(sdk_path, arena, .limited(std.math.maxInt(u16)));
4365	const parsed = try std.json.parseFromSlice(std.json.Value, arena, contents, .{});	4365	const parsed = try std.json.parseFromSlice(std.json.Value, arena, contents, .{});
4366	if (parsed.value.object.get("MinimalDisplayName")) \|ver\| return ver.string;	4366	if (parsed.value.object.get("MinimalDisplayName")) \|ver\| return ver.string;
4367	return error.SdkVersionFailure;	4367	return error.SdkVersionFailure;

src/link/MachO/CodeSignature.zig+1-3

 @@ -245,9 +245,7 @@ pub fn deinit(self: *CodeSignature, allocator: Allocator) void {
 }
 pub fn addEntitlements(self: *CodeSignature, allocator: Allocator, path: []const u8) !void {
-    const file = try fs.cwd().openFile(path, .{});
+    const inner = try fs.cwd().readFileAlloc(path, allocator, .limited(std.math.maxInt(u32)));
-    defer file.close();
-    const inner = try file.readToEndAlloc(allocator, std.math.maxInt(u32));
     self.entitlements = .{ .inner = inner };
 }

src/link/MachO/Dylib.zig+1-1

...	@@ -914,7 +914,7 @@ const math = std.math;	...	@@ -914,7 +914,7 @@ const math = std.math;
914	const mem = std.mem;	914	const mem = std.mem;
915	const Allocator = mem.Allocator;	915	const Allocator = mem.Allocator;
916	const Path = std.Build.Cache.Path;	916	const Path = std.Build.Cache.Path;
917	const Writer = std.io.Writer;	917	const Writer = std.Io.Writer;
918		918
919	const Dylib = @This();	919	const Dylib = @This();
920	const File = @import("file.zig").File;	920	const File = @import("file.zig").File;

src/link/MachO/InternalObject.zig+1-1

...	@@ -894,7 +894,7 @@ const macho = std.macho;	...	@@ -894,7 +894,7 @@ const macho = std.macho;
894	const mem = std.mem;	894	const mem = std.mem;
895	const std = @import("std");	895	const std = @import("std");
896	const trace = @import("../../tracy.zig").trace;	896	const trace = @import("../../tracy.zig").trace;
897	const Writer = std.io.Writer;	897	const Writer = std.Io.Writer;
898		898
899	const Allocator = std.mem.Allocator;	899	const Allocator = std.mem.Allocator;
900	const Atom = @import("Atom.zig");	900	const Atom = @import("Atom.zig");

src/link/MachO/Object.zig+1-1

...	@@ -3094,7 +3094,7 @@ const math = std.math;	...	@@ -3094,7 +3094,7 @@ const math = std.math;
3094	const mem = std.mem;	3094	const mem = std.mem;
3095	const Path = std.Build.Cache.Path;	3095	const Path = std.Build.Cache.Path;
3096	const Allocator = std.mem.Allocator;	3096	const Allocator = std.mem.Allocator;
3097	const Writer = std.io.Writer;	3097	const Writer = std.Io.Writer;
3098		3098
3099	const eh_frame = @import("eh_frame.zig");	3099	const eh_frame = @import("eh_frame.zig");
3100	const trace = @import("../../tracy.zig").trace;	3100	const trace = @import("../../tracy.zig").trace;

src/link/MachO/Relocation.zig+1-1

...	@@ -162,7 +162,7 @@ const std = @import("std");	...	@@ -162,7 +162,7 @@ const std = @import("std");
162	const assert = std.debug.assert;	162	const assert = std.debug.assert;
163	const macho = std.macho;	163	const macho = std.macho;
164	const math = std.math;	164	const math = std.math;
165	const Writer = std.io.Writer;	165	const Writer = std.Io.Writer;
166		166
167	const Atom = @import("Atom.zig");	167	const Atom = @import("Atom.zig");
168	const MachO = @import("../MachO.zig");	168	const MachO = @import("../MachO.zig");

src/link/MachO/Symbol.zig+1-1

...	@@ -417,7 +417,7 @@ pub const Index = u32;	...	@@ -417,7 +417,7 @@ pub const Index = u32;
417	const assert = std.debug.assert;	417	const assert = std.debug.assert;
418	const macho = std.macho;	418	const macho = std.macho;
419	const std = @import("std");	419	const std = @import("std");
420	const Writer = std.io.Writer;	420	const Writer = std.Io.Writer;
421		421
422	const Atom = @import("Atom.zig");	422	const Atom = @import("Atom.zig");
423	const File = @import("file.zig").File;	423	const File = @import("file.zig").File;

src/link/MachO/Thunk.zig+1-1

...	@@ -97,7 +97,7 @@ const math = std.math;	...	@@ -97,7 +97,7 @@ const math = std.math;
97	const mem = std.mem;	97	const mem = std.mem;
98	const std = @import("std");	98	const std = @import("std");
99	const trace = @import("../../tracy.zig").trace;	99	const trace = @import("../../tracy.zig").trace;
100	const Writer = std.io.Writer;	100	const Writer = std.Io.Writer;
101		101
102	const Allocator = mem.Allocator;	102	const Allocator = mem.Allocator;
103	const Atom = @import("Atom.zig");	103	const Atom = @import("Atom.zig");

src/link/MachO/ZigObject.zig+1-1

...	@@ -1785,7 +1785,7 @@ const mem = std.mem;	...	@@ -1785,7 +1785,7 @@ const mem = std.mem;
1785	const target_util = @import("../../target.zig");	1785	const target_util = @import("../../target.zig");
1786	const trace = @import("../../tracy.zig").trace;	1786	const trace = @import("../../tracy.zig").trace;
1787	const std = @import("std");	1787	const std = @import("std");
1788	const Writer = std.io.Writer;	1788	const Writer = std.Io.Writer;
1789		1789
1790	const Allocator = std.mem.Allocator;	1790	const Allocator = std.mem.Allocator;
1791	const Archive = @import("Archive.zig");	1791	const Archive = @import("Archive.zig");

src/link/MachO/dead_strip.zig+1-1

...	@@ -212,7 +212,7 @@ const mem = std.mem;	...	@@ -212,7 +212,7 @@ const mem = std.mem;
212	const trace = @import("../../tracy.zig").trace;	212	const trace = @import("../../tracy.zig").trace;
213	const track_live_log = std.log.scoped(.dead_strip_track_live);	213	const track_live_log = std.log.scoped(.dead_strip_track_live);
214	const std = @import("std");	214	const std = @import("std");
215	const Writer = std.io.Writer;	215	const Writer = std.Io.Writer;
216		216
217	const Allocator = mem.Allocator;	217	const Allocator = mem.Allocator;
218	const Atom = @import("Atom.zig");	218	const Atom = @import("Atom.zig");

src/link/MachO/dyld_info/Rebase.zig+1-1

...	@@ -656,7 +656,7 @@ const macho = std.macho;	...	@@ -656,7 +656,7 @@ const macho = std.macho;
656	const mem = std.mem;	656	const mem = std.mem;
657	const testing = std.testing;	657	const testing = std.testing;
658	const Allocator = mem.Allocator;	658	const Allocator = mem.Allocator;
659	const Writer = std.io.Writer;	659	const Writer = std.Io.Writer;
660		660
661	const trace = @import("../../../tracy.zig").trace;	661	const trace = @import("../../../tracy.zig").trace;
662	const File = @import("../file.zig").File;	662	const File = @import("../file.zig").File;

src/link/MachO/dyld_info/bind.zig+1-1

...	@@ -647,7 +647,7 @@ fn setDylibOrdinal(ordinal: i16, writer: *std.Io.Writer) !void {	...	@@ -647,7 +647,7 @@ fn setDylibOrdinal(ordinal: i16, writer: *std.Io.Writer) !void {
647	fn setAddend(addend: i64, writer: *std.Io.Writer) !void {	647	fn setAddend(addend: i64, writer: *std.Io.Writer) !void {
648	log.debug(">>> set addend: {x}", .{addend});	648	log.debug(">>> set addend: {x}", .{addend});
649	try writer.writeByte(macho.BIND_OPCODE_SET_ADDEND_SLEB);	649	try writer.writeByte(macho.BIND_OPCODE_SET_ADDEND_SLEB);
650	try std.leb.writeIleb128(writer, addend);	650	try writer.writeSleb128(addend);
651	}	651	}
652		652
653	fn doBind(writer: *std.Io.Writer) !void {	653	fn doBind(writer: *std.Io.Writer) !void {

src/link/MachO/eh_frame.zig+4-5

 @@ -248,13 +248,12 @@ pub const Iterator = struct {
     pub fn next(it: *Iterator) !?Record {
         if (it.pos >= it.data.len) return null;
-        var stream = std.io.fixedBufferStream(it.data[it.pos..]);
+        var reader: std.Io.Reader = .fixed(it.data[it.pos..]);
-        const reader = stream.reader();
-        const size = try reader.readInt(u32, .little);
+        const size = try reader.takeInt(u32, .little);
         if (size == 0xFFFFFFFF) @panic("DWARF CFI is 32bit on macOS");
-        const id = try reader.readInt(u32, .little);
+        const id = try reader.takeInt(u32, .little);
         const record = Record{
             .tag = if (id == 0) .cie else .fde,
             .offset = it.pos,
 @@ -502,7 +501,7 @@ const math = std.math;
 const mem = std.mem;
 const std = @import("std");
 const trace = @import("../../tracy.zig").trace;
-const Writer = std.io.Writer;
+const Writer = std.Io.Writer;
 const Allocator = std.mem.Allocator;
 const Atom = @import("Atom.zig");

src/link/MachO/file.zig+1-1

...	@@ -364,7 +364,7 @@ const log = std.log.scoped(.link);	...	@@ -364,7 +364,7 @@ const log = std.log.scoped(.link);
364	const macho = std.macho;	364	const macho = std.macho;
365	const Allocator = std.mem.Allocator;	365	const Allocator = std.mem.Allocator;
366	const Path = std.Build.Cache.Path;	366	const Path = std.Build.Cache.Path;
367	const Writer = std.io.Writer;	367	const Writer = std.Io.Writer;
368		368
369	const trace = @import("../../tracy.zig").trace;	369	const trace = @import("../../tracy.zig").trace;
370	const Archive = @import("Archive.zig");	370	const Archive = @import("Archive.zig");

src/link/MachO/relocatable.zig+1-1

...	@@ -780,7 +780,7 @@ const macho = std.macho;	...	@@ -780,7 +780,7 @@ const macho = std.macho;
780	const math = std.math;	780	const math = std.math;
781	const mem = std.mem;	781	const mem = std.mem;
782	const state_log = std.log.scoped(.link_state);	782	const state_log = std.log.scoped(.link_state);
783	const Writer = std.io.Writer;	783	const Writer = std.Io.Writer;
784		784
785	const Archive = @import("Archive.zig");	785	const Archive = @import("Archive.zig");
786	const Atom = @import("Atom.zig");	786	const Atom = @import("Atom.zig");

src/link/SpirV.zig+1-1

...	@@ -249,7 +249,7 @@ pub fn flush(	...	@@ -249,7 +249,7 @@ pub fn flush(
249	// We need to export the list of error names somewhere so that we can pretty-print them in the	249	// We need to export the list of error names somewhere so that we can pretty-print them in the
250	// executor. This is not really an important thing though, so we can just dump it in any old	250	// executor. This is not really an important thing though, so we can just dump it in any old
251	// nonsemantic instruction. For now, just put it in OpSourceExtension with a special name.	251	// nonsemantic instruction. For now, just put it in OpSourceExtension with a special name.
252	var error_info: std.io.Writer.Allocating = .init(linker.module.gpa);	252	var error_info: std.Io.Writer.Allocating = .init(linker.module.gpa);
253	defer error_info.deinit();	253	defer error_info.deinit();
254		254
255	error_info.writer.writeAll("zig_errors:") catch return error.OutOfMemory;	255	error_info.writer.writeAll("zig_errors:") catch return error.OutOfMemory;

src/link/Wasm.zig+2-2

...	@@ -2126,7 +2126,7 @@ pub const FunctionType = extern struct {	...	@@ -2126,7 +2126,7 @@ pub const FunctionType = extern struct {
2126	wasm: *const Wasm,	2126	wasm: *const Wasm,
2127	ft: FunctionType,	2127	ft: FunctionType,
2128		2128
2129	pub fn format(self: Formatter, writer: *std.io.Writer) std.io.Writer.Error!void {	2129	pub fn format(self: Formatter, writer: *std.Io.Writer) std.Io.Writer.Error!void {
2130	const params = self.ft.params.slice(self.wasm);	2130	const params = self.ft.params.slice(self.wasm);
2131	const returns = self.ft.returns.slice(self.wasm);	2131	const returns = self.ft.returns.slice(self.wasm);
2132		2132
...	@@ -2905,7 +2905,7 @@ pub const Feature = packed struct(u8) {	...	@@ -2905,7 +2905,7 @@ pub const Feature = packed struct(u8) {
2905	@"=",	2905	@"=",
2906	};	2906	};
2907		2907
2908	pub fn format(feature: Feature, writer: *std.io.Writer) std.io.Writer.Error!void {	2908	pub fn format(feature: Feature, writer: *std.Io.Writer) std.Io.Writer.Error!void {
2909	try writer.print("{s} {s}", .{ @tagName(feature.prefix), @tagName(feature.tag) });	2909	try writer.print("{s} {s}", .{ @tagName(feature.prefix), @tagName(feature.tag) });
2910	}	2910	}
2911		2911

src/link/Wasm/Object.zig+3-6

 @@ -1460,13 +1460,10 @@ fn parseFeatures(
 }
 fn readLeb(comptime T: type, bytes: []const u8, pos: usize) struct { T, usize } {
-    var fbr = std.io.fixedBufferStream(bytes[pos..]);
+    var reader: std.Io.Reader = .fixed(bytes[pos..]);
     return .{
-        switch (@typeInfo(T).int.signedness) {
+        reader.takeLeb128(T) catch unreachable,
-            .signed => std.leb.readIleb128(T, fbr.reader()) catch unreachable,
+        pos + reader.seek,
-            .unsigned => std.leb.readUleb128(T, fbr.reader()) catch unreachable,
-        },
-        pos + fbr.pos,
     };
 }

src/link/table_section.zig+1-1

...	@@ -39,7 +39,7 @@ pub fn TableSection(comptime Entry: type) type {	...	@@ -39,7 +39,7 @@ pub fn TableSection(comptime Entry: type) type {
39	return self.entries.items.len;	39	return self.entries.items.len;
40	}	40	}
41		41
42	pub fn format(self: Self, writer: *std.io.Writer) std.io.Writer.Error!void {	42	pub fn format(self: Self, writer: *std.Io.Writer) std.Io.Writer.Error!void {
43	try writer.writeAll("TableSection:\n");	43	try writer.writeAll("TableSection:\n");
44	for (self.entries.items, 0..) \|entry, i\| {	44	for (self.entries.items, 0..) \|entry, i\| {
45	try writer.print(" {d} => {}\n", .{ i, entry });	45	try writer.print(" {d} => {}\n", .{ i, entry });

src/link/tapi/parse.zig+5-5

src/main.zig+7-8

...	@@ -1,7 +1,6 @@	...	@@ -1,7 +1,6 @@
1	const std = @import("std");	1	const std = @import("std");
2	const builtin = @import("builtin");	2	const builtin = @import("builtin");
3	const assert = std.debug.assert;	3	const assert = std.debug.assert;
4	const io = std.io;
5	const fs = std.fs;	4	const fs = std.fs;
6	const mem = std.mem;	5	const mem = std.mem;
7	const process = std.process;	6	const process = std.process;
...	@@ -5444,7 +5443,7 @@ fn cmdBuild(gpa: Allocator, arena: Allocator, args: []const []const u8) !void {	...	@@ -5444,7 +5443,7 @@ fn cmdBuild(gpa: Allocator, arena: Allocator, args: []const []const u8) !void {
5444	// that are missing.	5443	// that are missing.
5445	const s = fs.path.sep_str;	5444	const s = fs.path.sep_str;
5446	const tmp_sub_path = "tmp" ++ s ++ results_tmp_file_nonce;	5445	const tmp_sub_path = "tmp" ++ s ++ results_tmp_file_nonce;
5447	const stdout = dirs.local_cache.handle.readFileAlloc(arena, tmp_sub_path, 50 * 1024 * 1024) catch \|err\| {	5446	const stdout = dirs.local_cache.handle.readFileAlloc(tmp_sub_path, arena, .limited(50 * 1024 * 1024)) catch \|err\| {
5448	fatal("unable to read results of configure phase from '{f}{s}': {s}", .{	5447	fatal("unable to read results of configure phase from '{f}{s}': {s}", .{
5449	dirs.local_cache, tmp_sub_path, @errorName(err),	5448	dirs.local_cache, tmp_sub_path, @errorName(err),
5450	});	5449	});
...	@@ -5694,7 +5693,8 @@ fn jitCmd(	...	@@ -5694,7 +5693,8 @@ fn jitCmd(
5694	try child.spawn();	5693	try child.spawn();
5695		5694
5696	if (options.capture) \|ptr\| {	5695	if (options.capture) \|ptr\| {
5697	ptr.* = try child.stdout.?.readToEndAlloc(arena, std.math.maxInt(u32));	5696	var stdout_reader = child.stdout.?.readerStreaming(&.{});
		5697	ptr.* = try stdout_reader.interface.allocRemaining(arena, .limited(std.math.maxInt(u32)));
5698	}	5698	}
5699		5699
5700	const term = try child.wait();	5700	const term = try child.wait();
...	@@ -5827,7 +5827,7 @@ const ArgIteratorResponseFile = process.ArgIteratorGeneral(.{ .comments = true,	...	@@ -5827,7 +5827,7 @@ const ArgIteratorResponseFile = process.ArgIteratorGeneral(.{ .comments = true,
5827	/// Initialize the arguments from a Response File. "*.rsp"	5827	/// Initialize the arguments from a Response File. "*.rsp"
5828	fn initArgIteratorResponseFile(allocator: Allocator, resp_file_path: []const u8) !ArgIteratorResponseFile {	5828	fn initArgIteratorResponseFile(allocator: Allocator, resp_file_path: []const u8) !ArgIteratorResponseFile {
5829	const max_bytes = 10 * 1024 * 1024; // 10 MiB of command line arguments is a reasonable limit	5829	const max_bytes = 10 * 1024 * 1024; // 10 MiB of command line arguments is a reasonable limit
5830	const cmd_line = try fs.cwd().readFileAlloc(allocator, resp_file_path, max_bytes);	5830	const cmd_line = try fs.cwd().readFileAlloc(resp_file_path, allocator, .limited(max_bytes));
5831	errdefer allocator.free(cmd_line);	5831	errdefer allocator.free(cmd_line);
5832		5832
5833	return ArgIteratorResponseFile.initTakeOwnership(allocator, cmd_line);	5833	return ArgIteratorResponseFile.initTakeOwnership(allocator, cmd_line);
...	@@ -7351,10 +7351,9 @@ fn loadManifest(	...	@@ -7351,10 +7351,9 @@ fn loadManifest(
7351	) !struct { Package.Manifest, Ast } {	7351	) !struct { Package.Manifest, Ast } {
7352	const manifest_bytes = while (true) {	7352	const manifest_bytes = while (true) {
7353	break options.dir.readFileAllocOptions(	7353	break options.dir.readFileAllocOptions(
7354	arena,
7355	Package.Manifest.basename,	7354	Package.Manifest.basename,
7356	Package.Manifest.max_bytes,	7355	arena,
7357	null,	7356	.limited(Package.Manifest.max_bytes),
7358	.@"1",	7357	.@"1",
7359	0,	7358	0,
7360	) catch \|err\| switch (err) {	7359	) catch \|err\| switch (err) {
...	@@ -7436,7 +7435,7 @@ const Templates = struct {	...	@@ -7436,7 +7435,7 @@ const Templates = struct {
7436	}	7435	}
7437		7436
7438	const max_bytes = 10 * 1024 * 1024;	7437	const max_bytes = 10 * 1024 * 1024;
7439	const contents = templates.dir.readFileAlloc(arena, template_path, max_bytes) catch \|err\| {	7438	const contents = templates.dir.readFileAlloc(template_path, arena, .limited(max_bytes)) catch \|err\| {
7440	fatal("unable to read template file '{s}': {s}", .{ template_path, @errorName(err) });	7439	fatal("unable to read template file '{s}': {s}", .{ template_path, @errorName(err) });
7441	};	7440	};
7442	templates.buffer.clearRetainingCapacity();	7441	templates.buffer.clearRetainingCapacity();

src/print_targets.zig+2-3

...	@@ -1,6 +1,5 @@	...	@@ -1,6 +1,5 @@
1	const std = @import("std");	1	const std = @import("std");
2	const fs = std.fs;	2	const fs = std.fs;
3	const io = std.io;
4	const mem = std.mem;	3	const mem = std.mem;
5	const meta = std.meta;	4	const meta = std.meta;
6	const fatal = std.process.fatal;	5	const fatal = std.process.fatal;
...	@@ -25,9 +24,9 @@ pub fn cmdTargets(	...	@@ -25,9 +24,9 @@ pub fn cmdTargets(
25	defer allocator.free(zig_lib_directory.path.?);	24	defer allocator.free(zig_lib_directory.path.?);
26		25
27	const abilists_contents = zig_lib_directory.handle.readFileAlloc(	26	const abilists_contents = zig_lib_directory.handle.readFileAlloc(
28	allocator,
29	glibc.abilists_path,	27	glibc.abilists_path,
30	glibc.abilists_max_size,	28	allocator,
		29	.limited(glibc.abilists_max_size),
31	) catch \|err\| switch (err) {	30	) catch \|err\| switch (err) {
32	error.OutOfMemory => return error.OutOfMemory,	31	error.OutOfMemory => return error.OutOfMemory,
33	else => fatal("unable to read " ++ glibc.abilists_path ++ ": {s}", .{@errorName(err)}),	32	else => fatal("unable to read " ++ glibc.abilists_path ++ ": {s}", .{@errorName(err)}),

src/print_value.zig+10-9

...	@@ -9,6 +9,7 @@ const Sema = @import("Sema.zig");	...	@@ -9,6 +9,7 @@ const Sema = @import("Sema.zig");
9	const InternPool = @import("InternPool.zig");	9	const InternPool = @import("InternPool.zig");
10	const Allocator = std.mem.Allocator;	10	const Allocator = std.mem.Allocator;
11	const Target = std.Target;	11	const Target = std.Target;
		12	const Writer = std.Io.Writer;
12		13
13	const max_aggregate_items = 100;	14	const max_aggregate_items = 100;
14	const max_string_len = 256;	15	const max_string_len = 256;
...	@@ -20,7 +21,7 @@ pub const FormatContext = struct {	...	@@ -20,7 +21,7 @@ pub const FormatContext = struct {
20	depth: u8,	21	depth: u8,
21	};	22	};
22		23
23	pub fn formatSema(ctx: FormatContext, writer: *std.io.Writer) std.io.Writer.Error!void {	24	pub fn formatSema(ctx: FormatContext, writer: *Writer) Writer.Error!void {
24	const sema = ctx.opt_sema.?;	25	const sema = ctx.opt_sema.?;
25	return print(ctx.val, writer, ctx.depth, ctx.pt, sema) catch \|err\| switch (err) {	26	return print(ctx.val, writer, ctx.depth, ctx.pt, sema) catch \|err\| switch (err) {
26	error.OutOfMemory => @panic("OOM"), // We're not allowed to return this from a format function	27	error.OutOfMemory => @panic("OOM"), // We're not allowed to return this from a format function
...	@@ -30,7 +31,7 @@ pub fn formatSema(ctx: FormatContext, writer: *std.io.Writer) std.io.Writer.Erro	...	@@ -30,7 +31,7 @@ pub fn formatSema(ctx: FormatContext, writer: *std.io.Writer) std.io.Writer.Erro
30	};	31	};
31	}	32	}
32		33
33	pub fn format(ctx: FormatContext, writer: *std.io.Writer) std.io.Writer.Error!void {	34	pub fn format(ctx: FormatContext, writer: *Writer) Writer.Error!void {
34	std.debug.assert(ctx.opt_sema == null);	35	std.debug.assert(ctx.opt_sema == null);
35	return print(ctx.val, writer, ctx.depth, ctx.pt, null) catch \|err\| switch (err) {	36	return print(ctx.val, writer, ctx.depth, ctx.pt, null) catch \|err\| switch (err) {
36	error.OutOfMemory => @panic("OOM"), // We're not allowed to return this from a format function	37	error.OutOfMemory => @panic("OOM"), // We're not allowed to return this from a format function
...	@@ -41,11 +42,11 @@ pub fn format(ctx: FormatContext, writer: *std.io.Writer) std.io.Writer.Error!vo	...	@@ -41,11 +42,11 @@ pub fn format(ctx: FormatContext, writer: *std.io.Writer) std.io.Writer.Error!vo
41		42
42	pub fn print(	43	pub fn print(
43	val: Value,	44	val: Value,
44	writer: *std.io.Writer,	45	writer: *Writer,
45	level: u8,	46	level: u8,
46	pt: Zcu.PerThread,	47	pt: Zcu.PerThread,
47	opt_sema: ?*Sema,	48	opt_sema: ?*Sema,
48	) (std.io.Writer.Error \|\| Zcu.CompileError)!void {	49	) (Writer.Error \|\| Zcu.CompileError)!void {
49	const zcu = pt.zcu;	50	const zcu = pt.zcu;
50	const ip = &zcu.intern_pool;	51	const ip = &zcu.intern_pool;
51	switch (ip.indexToKey(val.toIntern())) {	52	switch (ip.indexToKey(val.toIntern())) {
...	@@ -184,11 +185,11 @@ fn printAggregate(	...	@@ -184,11 +185,11 @@ fn printAggregate(
184	val: Value,	185	val: Value,
185	aggregate: InternPool.Key.Aggregate,	186	aggregate: InternPool.Key.Aggregate,
186	is_ref: bool,	187	is_ref: bool,
187	writer: *std.io.Writer,	188	writer: *Writer,
188	level: u8,	189	level: u8,
189	pt: Zcu.PerThread,	190	pt: Zcu.PerThread,
190	opt_sema: ?*Sema,	191	opt_sema: ?*Sema,
191	) (std.io.Writer.Error \|\| Zcu.CompileError)!void {	192	) (Writer.Error \|\| Zcu.CompileError)!void {
192	if (level == 0) {	193	if (level == 0) {
193	if (is_ref) try writer.writeByte('&');	194	if (is_ref) try writer.writeByte('&');
194	return writer.writeAll(".{ ... }");	195	return writer.writeAll(".{ ... }");
...	@@ -270,11 +271,11 @@ fn printPtr(	...	@@ -270,11 +271,11 @@ fn printPtr(
270	ptr_val: Value,	271	ptr_val: Value,
271	/// Whether to print `derivation` as an lvalue or rvalue. If `null`, the more concise option is chosen.	272	/// Whether to print `derivation` as an lvalue or rvalue. If `null`, the more concise option is chosen.
272	want_kind: ?PrintPtrKind,	273	want_kind: ?PrintPtrKind,
273	writer: *std.io.Writer,	274	writer: *Writer,
274	level: u8,	275	level: u8,
275	pt: Zcu.PerThread,	276	pt: Zcu.PerThread,
276	opt_sema: ?*Sema,	277	opt_sema: ?*Sema,
277	) (std.io.Writer.Error \|\| Zcu.CompileError)!void {	278	) (Writer.Error \|\| Zcu.CompileError)!void {
278	const ptr = switch (pt.zcu.intern_pool.indexToKey(ptr_val.toIntern())) {	279	const ptr = switch (pt.zcu.intern_pool.indexToKey(ptr_val.toIntern())) {
279	.undef => return writer.writeAll("undefined"),	280	.undef => return writer.writeAll("undefined"),
280	.ptr => \|ptr\| ptr,	281	.ptr => \|ptr\| ptr,
...	@@ -316,7 +317,7 @@ const PrintPtrKind = enum { lvalue, rvalue };	...	@@ -316,7 +317,7 @@ const PrintPtrKind = enum { lvalue, rvalue };
316	/// Returns the root derivation, which may be ignored.	317	/// Returns the root derivation, which may be ignored.
317	pub fn printPtrDerivation(	318	pub fn printPtrDerivation(
318	derivation: Value.PointerDeriveStep,	319	derivation: Value.PointerDeriveStep,
319	writer: *std.io.Writer,	320	writer: *Writer,
320	pt: Zcu.PerThread,	321	pt: Zcu.PerThread,
321	/// Whether to print `derivation` as an lvalue or rvalue. If `null`, the more concise option is chosen.	322	/// Whether to print `derivation` as an lvalue or rvalue. If `null`, the more concise option is chosen.
322	/// If this is `.rvalue`, the result may look like `&foo`, so it's not necessarily valid to treat it as	323	/// If this is `.rvalue`, the result may look like `&foo`, so it's not necessarily valid to treat it as

src/print_zir.zig+106-106

src/print_zoir.zig+1-1

...	@@ -113,4 +113,4 @@ const std = @import("std");	...	@@ -113,4 +113,4 @@ const std = @import("std");
113	const assert = std.debug.assert;	113	const assert = std.debug.assert;
114	const Allocator = std.mem.Allocator;	114	const Allocator = std.mem.Allocator;
115	const Zoir = std.zig.Zoir;	115	const Zoir = std.zig.Zoir;
116	const Writer = std.io.Writer;	116	const Writer = std.Io.Writer;

test/src/Cases.zig+1-1

...	@@ -386,7 +386,7 @@ fn addFromDirInner(	...	@@ -386,7 +386,7 @@ fn addFromDirInner(
386	current_file.* = filename;	386	current_file.* = filename;
387		387
388	const max_file_size = 10 * 1024 * 1024;	388	const max_file_size = 10 * 1024 * 1024;
389	const src = try iterable_dir.readFileAllocOptions(ctx.arena, filename, max_file_size, null, .@"1", 0);	389	const src = try iterable_dir.readFileAllocOptions(filename, ctx.arena, .limited(max_file_size), .@"1", 0);
390		390
391	// Parse the manifest	391	// Parse the manifest
392	var manifest = try TestManifest.parse(ctx.arena, src);	392	var manifest = try TestManifest.parse(ctx.arena, src);

test/src/check-stack-trace.zig+1-1

...	@@ -13,7 +13,7 @@ pub fn main() !void {	...	@@ -13,7 +13,7 @@ pub fn main() !void {
13	const input_path = args[1];	13	const input_path = args[1];
14	const optimize_mode_text = args[2];	14	const optimize_mode_text = args[2];
15		15
16	const input_bytes = try std.fs.cwd().readFileAlloc(arena, input_path, 5 * 1024 * 1024);	16	const input_bytes = try std.fs.cwd().readFileAlloc(input_path, arena, .limited(5 * 1024 * 1024));
17	const optimize_mode = std.meta.stringToEnum(std.builtin.OptimizeMode, optimize_mode_text).?;	17	const optimize_mode = std.meta.stringToEnum(std.builtin.OptimizeMode, optimize_mode_text).?;
18		18
19	var stderr = input_bytes;	19	var stderr = input_bytes;

test/standalone/child_process/main.zig+2-1

...	@@ -32,7 +32,8 @@ pub fn main() !void {	...	@@ -32,7 +32,8 @@ pub fn main() !void {
32		32
33	const hello_stdout = "hello from stdout";	33	const hello_stdout = "hello from stdout";
34	var buf: [hello_stdout.len]u8 = undefined;	34	var buf: [hello_stdout.len]u8 = undefined;
35	const n = try child.stdout.?.deprecatedReader().readAll(&buf);	35	var stdout_reader = child.stdout.?.readerStreaming(&.{});
		36	const n = try stdout_reader.interface.readSliceShort(&buf);
36	if (!std.mem.eql(u8, buf[0..n], hello_stdout)) {	37	if (!std.mem.eql(u8, buf[0..n], hello_stdout)) {
37	testError("child stdout: '{s}'; want '{s}'", .{ buf[0..n], hello_stdout });	38	testError("child stdout: '{s}'; want '{s}'", .{ buf[0..n], hello_stdout });
38	}	39	}

test/standalone/cmakedefine/check.zig+2-2

...	@@ -9,8 +9,8 @@ pub fn main() !void {	...	@@ -9,8 +9,8 @@ pub fn main() !void {
9	const actual_path = args[1];	9	const actual_path = args[1];
10	const expected_path = args[2];	10	const expected_path = args[2];
11		11
12	const actual = try std.fs.cwd().readFileAlloc(arena, actual_path, 1024 * 1024);	12	const actual = try std.fs.cwd().readFileAlloc(actual_path, arena, .limited(1024 * 1024));
13	const expected = try std.fs.cwd().readFileAlloc(arena, expected_path, 1024 * 1024);	13	const expected = try std.fs.cwd().readFileAlloc(expected_path, arena, .limited(1024 * 1024));
14		14
15	// The actual output starts with a comment which we should strip out before comparing.	15	// The actual output starts with a comment which we should strip out before comparing.
16	const comment_str = "/* This file was generated by ConfigHeader using the Zig Build System. */\n";	16	const comment_str = "/* This file was generated by ConfigHeader using the Zig Build System. */\n";

test/standalone/entry_point/check_differ.zig+2-2

...	@@ -6,8 +6,8 @@ pub fn main() !void {	...	@@ -6,8 +6,8 @@ pub fn main() !void {
6	const args = try std.process.argsAlloc(arena);	6	const args = try std.process.argsAlloc(arena);
7	if (args.len != 3) return error.BadUsage; // usage: 'check_differ <path a> <path b>'	7	if (args.len != 3) return error.BadUsage; // usage: 'check_differ <path a> <path b>'
8		8
9	const contents_1 = try std.fs.cwd().readFileAlloc(arena, args[1], 1024 * 1024 * 64); // 64 MiB ought to be plenty	9	const contents_1 = try std.fs.cwd().readFileAlloc(args[1], arena, .limited(1024 * 1024 * 64)); // 64 MiB ought to be plenty
10	const contents_2 = try std.fs.cwd().readFileAlloc(arena, args[2], 1024 * 1024 * 64); // 64 MiB ought to be plenty	10	const contents_2 = try std.fs.cwd().readFileAlloc(args[2], arena, .limited(1024 * 1024 * 64)); // 64 MiB ought to be plenty
11		11
12	if (std.mem.eql(u8, contents_1, contents_2)) {	12	if (std.mem.eql(u8, contents_1, contents_2)) {
13	return error.FilesMatch;	13	return error.FilesMatch;

test/standalone/simple/cat/main.zig+1-2

...	@@ -1,5 +1,4 @@	...	@@ -1,5 +1,4 @@
1	const std = @import("std");	1	const std = @import("std");
2	const io = std.io;
3	const fs = std.fs;	2	const fs = std.fs;
4	const mem = std.mem;	3	const mem = std.mem;
5	const warn = std.log.warn;	4	const warn = std.log.warn;
...	@@ -16,7 +15,7 @@ pub fn main() !void {	...	@@ -16,7 +15,7 @@ pub fn main() !void {
16	var catted_anything = false;	15	var catted_anything = false;
17	var stdout_writer = std.fs.File.stdout().writerStreaming(&.{});	16	var stdout_writer = std.fs.File.stdout().writerStreaming(&.{});
18	const stdout = &stdout_writer.interface;	17	const stdout = &stdout_writer.interface;
19	var stdin_reader = std.fs.File.stdin().reader(&.{});	18	var stdin_reader = std.fs.File.stdin().readerStreaming(&.{});
20		19
21	const cwd = fs.cwd();	20	const cwd = fs.cwd();
22		21

tools/docgen.zig+4-5

 @@ -77,7 +77,8 @@ pub fn main() !void {
     var code_dir = try fs.cwd().openDir(code_dir_path, .{});
     defer code_dir.close();
-    const input_file_bytes = try in_file.deprecatedReader().readAllAlloc(arena, max_doc_file_size);
+    var in_file_reader = in_file.reader(&.{});
+    const input_file_bytes = try in_file_reader.interface.allocRemaining(arena, .limited(max_doc_file_size));
     var tokenizer = Tokenizer.init(input_path, input_file_bytes);
     var toc = try genToc(arena, &tokenizer);
 @@ -1039,10 +1040,8 @@ fn genHtml(
                 });
                 defer allocator.free(out_basename);
-                const contents = code_dir.readFileAlloc(allocator, out_basename, std.math.maxInt(u32)) catch |err| {
+                const contents = code_dir.readFileAlloc(out_basename, allocator, .limited(std.math.maxInt(u32))) catch |err| {
-                    return parseError(tokenizer, code.token, "unable to open '{s}': {s}", .{
+                    return parseError(tokenizer, code.token, "unable to open '{s}': {t}", .{ out_basename, err });
-                        out_basename, @errorName(err),
-                    });
                 };
                 defer allocator.free(contents);

tools/doctest.zig+1-1

...	@@ -70,7 +70,7 @@ pub fn main() !void {	...	@@ -70,7 +70,7 @@ pub fn main() !void {
70	const zig_path = opt_zig orelse fatal("missing zig compiler path (--zig)", .{});	70	const zig_path = opt_zig orelse fatal("missing zig compiler path (--zig)", .{});
71	const cache_root = opt_cache_root orelse fatal("missing cache root path (--cache-root)", .{});	71	const cache_root = opt_cache_root orelse fatal("missing cache root path (--cache-root)", .{});
72		72
73	const source_bytes = try fs.cwd().readFileAlloc(arena, input_path, std.math.maxInt(u32));	73	const source_bytes = try fs.cwd().readFileAlloc(input_path, arena, .limited(std.math.maxInt(u32)));
74	const code = try parseManifest(arena, source_bytes);	74	const code = try parseManifest(arena, source_bytes);
75	const source = stripManifest(source_bytes);	75	const source = stripManifest(source_bytes);
76		76

tools/dump-cov.zig+2-3

 @@ -38,10 +38,9 @@ pub fn main() !void {
     defer debug_info.deinit(gpa);
     const cov_bytes = cov_path.root_dir.handle.readFileAllocOptions(
-        arena,
         cov_path.sub_path,
-        1 << 30,
+        arena,
-        null,
+        .limited(1 << 30),
         .of(SeenPcsHeader),
         null,
     ) catch |err| {

tools/fetch_them_macos_headers.zig+3-3

...	@@ -1,6 +1,5 @@	...	@@ -1,6 +1,5 @@
1	const std = @import("std");	1	const std = @import("std");
2	const fs = std.fs;	2	const fs = std.fs;
3	const io = std.io;
4	const mem = std.mem;	3	const mem = std.mem;
5	const process = std.process;	4	const process = std.process;
6	const assert = std.debug.assert;	5	const assert = std.debug.assert;
...	@@ -93,7 +92,7 @@ pub fn main() anyerror!void {	...	@@ -93,7 +92,7 @@ pub fn main() anyerror!void {
93		92
94	var sdk_dir = try std.fs.cwd().openDir(sysroot_path, .{});	93	var sdk_dir = try std.fs.cwd().openDir(sysroot_path, .{});
95	defer sdk_dir.close();	94	defer sdk_dir.close();
96	const sdk_info = try sdk_dir.readFileAlloc(allocator, "SDKSettings.json", std.math.maxInt(u32));	95	const sdk_info = try sdk_dir.readFileAlloc("SDKSettings.json", allocator, .limited(std.math.maxInt(u32)));
97		96
98	const parsed_json = try std.json.parseFromSlice(struct {	97	const parsed_json = try std.json.parseFromSlice(struct {
99	DefaultProperties: struct { MACOSX_DEPLOYMENT_TARGET: []const u8 },	98	DefaultProperties: struct { MACOSX_DEPLOYMENT_TARGET: []const u8 },
...	@@ -198,7 +197,8 @@ fn fetchTarget(	...	@@ -198,7 +197,8 @@ fn fetchTarget(
198	var dirs = std.StringHashMap(fs.Dir).init(arena);	197	var dirs = std.StringHashMap(fs.Dir).init(arena);
199	try dirs.putNoClobber(".", dest_dir);	198	try dirs.putNoClobber(".", dest_dir);
200		199
201	const headers_list_str = try headers_list_file.deprecatedReader().readAllAlloc(arena, std.math.maxInt(usize));	200	var headers_list_file_reader = headers_list_file.reader(&.{});
		201	const headers_list_str = try headers_list_file_reader.interface.allocRemaining(arena, .unlimited);
202	const prefix = "/usr/include";	202	const prefix = "/usr/include";
203		203
204	var it = mem.splitScalar(u8, headers_list_str, '\n');	204	var it = mem.splitScalar(u8, headers_list_str, '\n');

tools/gen_spirv_spec.zig+15-15

...	@@ -136,7 +136,7 @@ fn readExtRegistry(exts: *std.array_list.Managed(Extension), dir: std.fs.Dir, su	...	@@ -136,7 +136,7 @@ fn readExtRegistry(exts: *std.array_list.Managed(Extension), dir: std.fs.Dir, su
136	}	136	}
137		137
138	fn readRegistry(comptime RegistryType: type, dir: std.fs.Dir, path: []const u8) !RegistryType {	138	fn readRegistry(comptime RegistryType: type, dir: std.fs.Dir, path: []const u8) !RegistryType {
139	const spec = try dir.readFileAlloc(allocator, path, std.math.maxInt(usize));	139	const spec = try dir.readFileAlloc(path, allocator, .unlimited);
140	// Required for json parsing.	140	// Required for json parsing.
141	// TODO: ALI	141	// TODO: ALI
142	@setEvalBranchQuota(10000);	142	@setEvalBranchQuota(10000);
...	@@ -189,7 +189,7 @@ fn tagPriorityScore(tag: []const u8) usize {	...	@@ -189,7 +189,7 @@ fn tagPriorityScore(tag: []const u8) usize {
189	}	189	}
190		190
191	fn render(	191	fn render(
192	writer: *std.io.Writer,	192	writer: *std.Io.Writer,
193	registry: CoreRegistry,	193	registry: CoreRegistry,
194	extensions: []const Extension,	194	extensions: []const Extension,
195	) !void {	195	) !void {
...	@@ -214,7 +214,7 @@ fn render(	...	@@ -214,7 +214,7 @@ fn render(
214	\\ none,	214	\\ none,
215	\\ _,	215	\\ _,
216	\\	216	\\
217	\\ pub fn format(self: Id, writer: *std.io.Writer) std.io.Writer.Error!void {	217	\\ pub fn format(self: Id, writer: *std.Io.Writer) std.Io.Writer.Error!void {
218	\\ switch (self) {	218	\\ switch (self) {
219	\\ .none => try writer.writeAll("(none)"),	219	\\ .none => try writer.writeAll("(none)"),
220	\\ else => try writer.print("%{d}", .{@intFromEnum(self)}),	220	\\ else => try writer.print("%{d}", .{@intFromEnum(self)}),
...	@@ -327,7 +327,7 @@ fn render(	...	@@ -327,7 +327,7 @@ fn render(
327	}	327	}
328		328
329	fn renderInstructionSet(	329	fn renderInstructionSet(
330	writer: *std.io.Writer,	330	writer: *std.Io.Writer,
331	core: CoreRegistry,	331	core: CoreRegistry,
332	extensions: []const Extension,	332	extensions: []const Extension,
333	all_operand_kinds: OperandKindMap,	333	all_operand_kinds: OperandKindMap,
...	@@ -362,7 +362,7 @@ fn renderInstructionSet(	...	@@ -362,7 +362,7 @@ fn renderInstructionSet(
362	}	362	}
363		363
364	fn renderInstructionsCase(	364	fn renderInstructionsCase(
365	writer: *std.io.Writer,	365	writer: *std.Io.Writer,
366	set_name: []const u8,	366	set_name: []const u8,
367	instructions: []const Instruction,	367	instructions: []const Instruction,
368	all_operand_kinds: OperandKindMap,	368	all_operand_kinds: OperandKindMap,
...	@@ -409,7 +409,7 @@ fn renderInstructionsCase(	...	@@ -409,7 +409,7 @@ fn renderInstructionsCase(
409	);	409	);
410	}	410	}
411		411
412	fn renderClass(writer: *std.io.Writer, instructions: []const Instruction) !void {	412	fn renderClass(writer: *std.Io.Writer, instructions: []const Instruction) !void {
413	var class_map = std.StringArrayHashMap(void).init(allocator);	413	var class_map = std.StringArrayHashMap(void).init(allocator);
414		414
415	for (instructions) \|inst\| {	415	for (instructions) \|inst\| {
...	@@ -427,7 +427,7 @@ fn renderClass(writer: *std.io.Writer, instructions: []const Instruction) !void	...	@@ -427,7 +427,7 @@ fn renderClass(writer: *std.io.Writer, instructions: []const Instruction) !void
427	const Formatter = struct {	427	const Formatter = struct {
428	data: []const u8,	428	data: []const u8,
429		429
430	fn format(f: Formatter, writer: *std.Io.Writer) std.io.Writer.Error!void {	430	fn format(f: Formatter, writer: *std.Io.Writer) std.Io.Writer.Error!void {
431	var id_buf: [128]u8 = undefined;	431	var id_buf: [128]u8 = undefined;
432	var fw: std.Io.Writer = .fixed(&id_buf);	432	var fw: std.Io.Writer = .fixed(&id_buf);
433	for (f.data, 0..) \|c, i\| {	433	for (f.data, 0..) \|c, i\| {
...	@@ -457,7 +457,7 @@ fn formatId(identifier: []const u8) std.fmt.Alt(Formatter, Formatter.format) {	...	@@ -457,7 +457,7 @@ fn formatId(identifier: []const u8) std.fmt.Alt(Formatter, Formatter.format) {
457	return .{ .data = .{ .data = identifier } };	457	return .{ .data = .{ .data = identifier } };
458	}	458	}
459		459
460	fn renderOperandKind(writer: *std.io.Writer, operands: []const OperandKind) !void {	460	fn renderOperandKind(writer: *std.Io.Writer, operands: []const OperandKind) !void {
461	try writer.writeAll(	461	try writer.writeAll(
462	\\pub const OperandKind = enum {	462	\\pub const OperandKind = enum {
463	\\ opcode,	463	\\ opcode,
...	@@ -513,7 +513,7 @@ fn renderOperandKind(writer: *std.io.Writer, operands: []const OperandKind) !voi	...	@@ -513,7 +513,7 @@ fn renderOperandKind(writer: *std.io.Writer, operands: []const OperandKind) !voi
513	try writer.writeAll("};\n}\n};\n");	513	try writer.writeAll("};\n}\n};\n");
514	}	514	}
515		515
516	fn renderEnumerant(writer: *std.io.Writer, enumerant: Enumerant) !void {	516	fn renderEnumerant(writer: *std.Io.Writer, enumerant: Enumerant) !void {
517	try writer.print(".{{.name = \"{s}\", .value = ", .{enumerant.enumerant});	517	try writer.print(".{{.name = \"{s}\", .value = ", .{enumerant.enumerant});
518	switch (enumerant.value) {	518	switch (enumerant.value) {
519	.bitflag => \|flag\| try writer.writeAll(flag),	519	.bitflag => \|flag\| try writer.writeAll(flag),
...	@@ -530,7 +530,7 @@ fn renderEnumerant(writer: *std.io.Writer, enumerant: Enumerant) !void {	...	@@ -530,7 +530,7 @@ fn renderEnumerant(writer: *std.io.Writer, enumerant: Enumerant) !void {
530	}	530	}
531		531
532	fn renderOpcodes(	532	fn renderOpcodes(
533	writer: *std.io.Writer,	533	writer: *std.Io.Writer,
534	opcode_type_name: []const u8,	534	opcode_type_name: []const u8,
535	want_operands: bool,	535	want_operands: bool,
536	instructions: []const Instruction,	536	instructions: []const Instruction,
...	@@ -629,7 +629,7 @@ fn renderOpcodes(	...	@@ -629,7 +629,7 @@ fn renderOpcodes(
629	}	629	}
630		630
631	fn renderOperandKinds(	631	fn renderOperandKinds(
632	writer: *std.io.Writer,	632	writer: *std.Io.Writer,
633	kinds: []const OperandKind,	633	kinds: []const OperandKind,
634	extended_structs: ExtendedStructSet,	634	extended_structs: ExtendedStructSet,
635	) !void {	635	) !void {
...	@@ -643,7 +643,7 @@ fn renderOperandKinds(	...	@@ -643,7 +643,7 @@ fn renderOperandKinds(
643	}	643	}
644		644
645	fn renderValueEnum(	645	fn renderValueEnum(
646	writer: *std.io.Writer,	646	writer: *std.Io.Writer,
647	enumeration: OperandKind,	647	enumeration: OperandKind,
648	extended_structs: ExtendedStructSet,	648	extended_structs: ExtendedStructSet,
649	) !void {	649	) !void {
...	@@ -721,7 +721,7 @@ fn renderValueEnum(	...	@@ -721,7 +721,7 @@ fn renderValueEnum(
721	}	721	}
722		722
723	fn renderBitEnum(	723	fn renderBitEnum(
724	writer: *std.io.Writer,	724	writer: *std.Io.Writer,
725	enumeration: OperandKind,	725	enumeration: OperandKind,
726	extended_structs: ExtendedStructSet,	726	extended_structs: ExtendedStructSet,
727	) !void {	727	) !void {
...	@@ -804,7 +804,7 @@ fn renderBitEnum(	...	@@ -804,7 +804,7 @@ fn renderBitEnum(
804	}	804	}
805		805
806	fn renderOperand(	806	fn renderOperand(
807	writer: *std.io.Writer,	807	writer: *std.Io.Writer,
808	kind: enum {	808	kind: enum {
809	@"union",	809	@"union",
810	instruction,	810	instruction,
...	@@ -888,7 +888,7 @@ fn renderOperand(	...	@@ -888,7 +888,7 @@ fn renderOperand(
888	try writer.writeAll(",\n");	888	try writer.writeAll(",\n");
889	}	889	}
890		890
891	fn renderFieldName(writer: *std.io.Writer, operands: []const Operand, field_index: usize) !void {	891	fn renderFieldName(writer: *std.Io.Writer, operands: []const Operand, field_index: usize) !void {
892	const operand = operands[field_index];	892	const operand = operands[field_index];
893		893
894	derive_from_kind: {	894	derive_from_kind: {

tools/gen_stubs.zig+2-3

 @@ -299,10 +299,9 @@ pub fn main() !void {
         // Read the ELF header.
         const elf_bytes = build_all_dir.readFileAllocOptions(
-            arena,
             libc_so_path,
-            100 * 1024 * 1024,
+            arena,
-            1 * 1024 * 1024,
+            .limited(100 * 1024 * 1024),
             .of(elf.Elf64_Ehdr),
             null,
         ) catch |err| {

tools/generate_JSONTestSuite.zig+1-1

...	@@ -32,7 +32,7 @@ pub fn main() !void {	...	@@ -32,7 +32,7 @@ pub fn main() !void {
32	}).lessThan);	32	}).lessThan);
33		33
34	for (names.items) \|name\| {	34	for (names.items) \|name\| {
35	const contents = try std.fs.cwd().readFileAlloc(allocator, name, 250001);	35	const contents = try std.fs.cwd().readFileAlloc(name, allocator, .limited(250001));
36	try output.writeAll("test ");	36	try output.writeAll("test ");
37	try writeString(output, name);	37	try writeString(output, name);
38	try output.writeAll(" {\n try ");	38	try output.writeAll(" {\n try ");

tools/generate_linux_syscalls.zig+1-1

...	@@ -248,7 +248,7 @@ pub fn main() !void {	...	@@ -248,7 +248,7 @@ pub fn main() !void {
248	try Io.Writer.flush(stdout);	248	try Io.Writer.flush(stdout);
249	}	249	}
250		250
251	fn usage(w: *std.io.Writer, arg0: []const u8) std.io.Writer.Error!void {	251	fn usage(w: *std.Io.Writer, arg0: []const u8) std.Io.Writer.Error!void {
252	try w.print(	252	try w.print(
253	\\Usage: {s} /path/to/zig /path/to/linux	253	\\Usage: {s} /path/to/zig /path/to/linux
254	\\Alternative Usage: zig run /path/to/git/zig/tools/generate_linux_syscalls.zig -- /path/to/zig /path/to/linux	254	\\Alternative Usage: zig run /path/to/git/zig/tools/generate_linux_syscalls.zig -- /path/to/zig /path/to/linux

tools/incr-check.zig+2-2

...	@@ -52,7 +52,7 @@ pub fn main() !void {	...	@@ -52,7 +52,7 @@ pub fn main() !void {
52	const zig_exe = opt_zig_exe orelse fatal("missing path to zig\n{s}", .{usage});	52	const zig_exe = opt_zig_exe orelse fatal("missing path to zig\n{s}", .{usage});
53	const input_file_name = opt_input_file_name orelse fatal("missing input file\n{s}", .{usage});	53	const input_file_name = opt_input_file_name orelse fatal("missing input file\n{s}", .{usage});
54		54
55	const input_file_bytes = try std.fs.cwd().readFileAlloc(arena, input_file_name, std.math.maxInt(u32));	55	const input_file_bytes = try std.fs.cwd().readFileAlloc(input_file_name, arena, .limited(std.math.maxInt(u32)));
56	const case = try Case.parse(arena, input_file_bytes);	56	const case = try Case.parse(arena, input_file_bytes);
57		57
58	// Check now: if there are any targets using the `cbe` backend, we need the lib dir.	58	// Check now: if there are any targets using the `cbe` backend, we need the lib dir.
...	@@ -226,7 +226,7 @@ const Eval = struct {	...	@@ -226,7 +226,7 @@ const Eval = struct {
226	cc_child_args: *std.ArrayListUnmanaged([]const u8),	226	cc_child_args: *std.ArrayListUnmanaged([]const u8),
227		227
228	const StreamEnum = enum { stdout, stderr };	228	const StreamEnum = enum { stdout, stderr };
229	const Poller = std.io.Poller(StreamEnum);	229	const Poller = std.Io.Poller(StreamEnum);
230		230
231	/// Currently this function assumes the previous updates have already been written.	231	/// Currently this function assumes the previous updates have already been written.
232	fn write(eval: *Eval, update: Case.Update) void {	232	fn write(eval: *Eval, update: Case.Update) void {

tools/migrate_langref.zig+2-2

...	@@ -1,6 +1,5 @@	...	@@ -1,6 +1,5 @@
1	const std = @import("std");	1	const std = @import("std");
2	const builtin = @import("builtin");	2	const builtin = @import("builtin");
3	const io = std.io;
4	const fs = std.fs;	3	const fs = std.fs;
5	const print = std.debug.print;	4	const print = std.debug.print;
6	const mem = std.mem;	5	const mem = std.mem;
...	@@ -29,7 +28,8 @@ pub fn main() !void {	...	@@ -29,7 +28,8 @@ pub fn main() !void {
29	var out_dir = try fs.cwd().openDir(fs.path.dirname(output_file).?, .{});	28	var out_dir = try fs.cwd().openDir(fs.path.dirname(output_file).?, .{});
30	defer out_dir.close();	29	defer out_dir.close();
31		30
32	const input_file_bytes = try in_file.deprecatedReader().readAllAlloc(arena, std.math.maxInt(u32));	31	var in_file_reader = in_file.reader(&.{});
		32	const input_file_bytes = try in_file_reader.interface.allocRemaining(arena, .unlimited);
33		33
34	var tokenizer = Tokenizer.init(input_file, input_file_bytes);	34	var tokenizer = Tokenizer.init(input_file, input_file_bytes);
35		35

tools/process_headers.zig+1-1

...	@@ -254,7 +254,7 @@ pub fn main() !void {	...	@@ -254,7 +254,7 @@ pub fn main() !void {
254	.file, .sym_link => {	254	.file, .sym_link => {
255	const rel_path = try std.fs.path.relative(allocator, target_include_dir, full_path);	255	const rel_path = try std.fs.path.relative(allocator, target_include_dir, full_path);
256	const max_size = 2 * 1024 * 1024 * 1024;	256	const max_size = 2 * 1024 * 1024 * 1024;
257	const raw_bytes = try std.fs.cwd().readFileAlloc(allocator, full_path, max_size);	257	const raw_bytes = try std.fs.cwd().readFileAlloc(full_path, allocator, .limited(max_size));
258	const trimmed = std.mem.trim(u8, raw_bytes, " \r\n\t");	258	const trimmed = std.mem.trim(u8, raw_bytes, " \r\n\t");
259	total_bytes += raw_bytes.len;	259	total_bytes += raw_bytes.len;
260	const hash = try allocator.alloc(u8, 32);	260	const hash = try allocator.alloc(u8, 32);

tools/update-linux-headers.zig+1-1

...	@@ -206,7 +206,7 @@ pub fn main() !void {	...	@@ -206,7 +206,7 @@ pub fn main() !void {
206	.file => {	206	.file => {
207	const rel_path = try std.fs.path.relative(arena, target_include_dir, full_path);	207	const rel_path = try std.fs.path.relative(arena, target_include_dir, full_path);
208	const max_size = 2 * 1024 * 1024 * 1024;	208	const max_size = 2 * 1024 * 1024 * 1024;
209	const raw_bytes = try std.fs.cwd().readFileAlloc(arena, full_path, max_size);	209	const raw_bytes = try std.fs.cwd().readFileAlloc(full_path, arena, .limited(max_size));
210	const trimmed = std.mem.trim(u8, raw_bytes, " \r\n\t");	210	const trimmed = std.mem.trim(u8, raw_bytes, " \r\n\t");
211	total_bytes += raw_bytes.len;	211	total_bytes += raw_bytes.len;
212	const hash = try arena.alloc(u8, 32);	212	const hash = try arena.alloc(u8, 32);

tools/update_clang_options.zig+1-1

...	@@ -965,7 +965,7 @@ fn printUsageAndExit(arg0: []const u8) noreturn {	...	@@ -965,7 +965,7 @@ fn printUsageAndExit(arg0: []const u8) noreturn {
965	std.process.exit(1);	965	std.process.exit(1);
966	}	966	}
967		967
968	fn printUsage(w: *std.io.Writer, arg0: []const u8) std.io.Writer.Error!void {	968	fn printUsage(w: *std.Io.Writer, arg0: []const u8) std.Io.Writer.Error!void {
969	try w.print(	969	try w.print(
970	\\Usage: {s} /path/to/llvm-tblgen /path/to/git/llvm/llvm-project	970	\\Usage: {s} /path/to/llvm-tblgen /path/to/git/llvm/llvm-project
971	\\Alternative Usage: zig run /path/to/git/zig/tools/update_clang_options.zig -- /path/to/llvm-tblgen /path/to/git/llvm/llvm-project	971	\\Alternative Usage: zig run /path/to/git/zig/tools/update_clang_options.zig -- /path/to/llvm-tblgen /path/to/git/llvm/llvm-project

tools/update_crc_catalog.zig+1-1

...	@@ -194,7 +194,7 @@ fn printUsageAndExit(arg0: []const u8) noreturn {	...	@@ -194,7 +194,7 @@ fn printUsageAndExit(arg0: []const u8) noreturn {
194	std.process.exit(1);	194	std.process.exit(1);
195	}	195	}
196		196
197	fn printUsage(w: *std.io.Writer, arg0: []const u8) std.io.Writer.Error!void {	197	fn printUsage(w: *std.Io.Writer, arg0: []const u8) std.Io.Writer.Error!void {
198	return w.print(	198	return w.print(
199	\\Usage: {s} /path/git/zig	199	\\Usage: {s} /path/git/zig
200	\\	200	\\

tools/update_glibc.zig+4-4

 @@ -116,9 +116,9 @@ pub fn main() !void {
         const max_file_size = 10 * 1024 * 1024;
         const generic_glibc_contents = generic_glibc_dir.readFileAlloc(
-            arena,
             entry.path,
-            max_file_size,
+            arena,
+            .limited(max_file_size),
         ) catch |err| switch (err) {
             error.FileNotFound => continue,
             else => |e| fatal("unable to load '{s}/include/{s}': {s}", .{
 @@ -126,9 +126,9 @@ pub fn main() !void {
             }),
         };
         const glibc_include_contents = include_dir.readFileAlloc(
-            arena,
             entry.path,
-            max_file_size,
+            arena,
+            .limited(max_file_size),
         ) catch |err| {
             fatal("unable to load '{s}/include/{s}': {s}", .{
                 dest_dir_path, entry.path, @errorName(err),

author	Andrew Kelley <andrew@ziglang.org> 2025-08-30 12:43:52-07:00
committer	GitHub <noreply@github.com> 2025-08-30 12:43:52-07:00
log	b7104231af68c26b850325748a64f15119a2dd69
tree	c83483ec36ae96af5cf429cf8129336fa09ef256
parent	151314346d7c4ed4da13a0a0146e1016c9ca5dd7
parent	31a0c2a36a09fd3cd82f061b090fc12c3239dfb1
signature	Signed by PGP key B5690EEEBB952194

...	@@ -374,21 +374,21 @@ pub fn deinit(ir: *Ir, gpa: std.mem.Allocator) void {	...	@@ -374,21 +374,21 @@ pub fn deinit(ir: *Ir, gpa: std.mem.Allocator) void {
374	ir.* = undefined;	374	ir.* = undefined;
375	}	375	}
376		376
377	const TYPE = std.io.tty.Color.bright_magenta;	377	const TYPE = std.Io.tty.Color.bright_magenta;
378	const INST = std.io.tty.Color.bright_cyan;	378	const INST = std.Io.tty.Color.bright_cyan;
379	const REF = std.io.tty.Color.bright_blue;	379	const REF = std.Io.tty.Color.bright_blue;
380	const LITERAL = std.io.tty.Color.bright_green;	380	const LITERAL = std.Io.tty.Color.bright_green;
381	const ATTRIBUTE = std.io.tty.Color.bright_yellow;	381	const ATTRIBUTE = std.Io.tty.Color.bright_yellow;
382		382
383	const RefMap = std.AutoArrayHashMap(Ref, void);	383	const RefMap = std.AutoArrayHashMap(Ref, void);
384		384
385	pub fn dump(ir: *const Ir, gpa: Allocator, config: std.io.tty.Config, w: anytype) !void {	385	pub fn dump(ir: *const Ir, gpa: Allocator, config: std.Io.tty.Config, w: anytype) !void {
386	for (ir.decls.keys(), ir.decls.values()) \|name, *decl\| {	386	for (ir.decls.keys(), ir.decls.values()) \|name, *decl\| {
387	try ir.dumpDecl(decl, gpa, name, config, w);	387	try ir.dumpDecl(decl, gpa, name, config, w);
388	}	388	}
389	}	389	}
390		390
391	fn dumpDecl(ir: const Ir, decl: const Decl, gpa: Allocator, name: []const u8, config: std.io.tty.Config, w: anytype) !void {	391	fn dumpDecl(ir: const Ir, decl: const Decl, gpa: Allocator, name: []const u8, config: std.Io.tty.Config, w: anytype) !void {
392	const tags = decl.instructions.items(.tag);	392	const tags = decl.instructions.items(.tag);
393	const data = decl.instructions.items(.data);	393	const data = decl.instructions.items(.data);
394		394
...	@@ -609,7 +609,7 @@ fn dumpDecl(ir: const Ir, decl: const Decl, gpa: Allocator, name: []const u8,	...	@@ -609,7 +609,7 @@ fn dumpDecl(ir: const Ir, decl: const Decl, gpa: Allocator, name: []const u8,
609	try w.writeAll("}\n\n");	609	try w.writeAll("}\n\n");
610	}	610	}
611		611
612	fn writeType(ir: Ir, ty_ref: Interner.Ref, config: std.io.tty.Config, w: anytype) !void {	612	fn writeType(ir: Ir, ty_ref: Interner.Ref, config: std.Io.tty.Config, w: anytype) !void {
613	const ty = ir.interner.get(ty_ref);	613	const ty = ir.interner.get(ty_ref);
614	try config.setColor(w, TYPE);	614	try config.setColor(w, TYPE);
615	switch (ty) {	615	switch (ty) {
...	@@ -639,7 +639,7 @@ fn writeType(ir: Ir, ty_ref: Interner.Ref, config: std.io.tty.Config, w: anytype	...	@@ -639,7 +639,7 @@ fn writeType(ir: Ir, ty_ref: Interner.Ref, config: std.io.tty.Config, w: anytype
639	}	639	}
640	}	640	}
641		641
642	fn writeValue(ir: Ir, val: Interner.Ref, config: std.io.tty.Config, w: anytype) !void {	642	fn writeValue(ir: Ir, val: Interner.Ref, config: std.Io.tty.Config, w: anytype) !void {
643	try config.setColor(w, LITERAL);	643	try config.setColor(w, LITERAL);
644	const key = ir.interner.get(val);	644	const key = ir.interner.get(val);
645	switch (key) {	645	switch (key) {
...	@@ -655,7 +655,7 @@ fn writeValue(ir: Ir, val: Interner.Ref, config: std.io.tty.Config, w: anytype)	...	@@ -655,7 +655,7 @@ fn writeValue(ir: Ir, val: Interner.Ref, config: std.io.tty.Config, w: anytype)
655	}	655	}
656	}	656	}
657		657
658	fn writeRef(ir: Ir, decl: const Decl, ref_map: RefMap, ref: Ref, config: std.io.tty.Config, w: anytype) !void {	658	fn writeRef(ir: Ir, decl: const Decl, ref_map: RefMap, ref: Ref, config: std.Io.tty.Config, w: anytype) !void {
659	assert(ref != .none);	659	assert(ref != .none);
660	const index = @intFromEnum(ref);	660	const index = @intFromEnum(ref);
661	const ty_ref = decl.instructions.items(.ty)[index];	661	const ty_ref = decl.instructions.items(.ty)[index];
...	@@ -678,7 +678,7 @@ fn writeRef(ir: Ir, decl: const Decl, ref_map: RefMap, ref: Ref, config: std.i	...	@@ -678,7 +678,7 @@ fn writeRef(ir: Ir, decl: const Decl, ref_map: RefMap, ref: Ref, config: std.i
678	try w.print(" %{d}", .{ref_index});	678	try w.print(" %{d}", .{ref_index});
679	}	679	}
680		680
681	fn writeNewRef(ir: Ir, decl: const Decl, ref_map: RefMap, ref: Ref, config: std.io.tty.Config, w: anytype) !void {	681	fn writeNewRef(ir: Ir, decl: const Decl, ref_map: RefMap, ref: Ref, config: std.Io.tty.Config, w: anytype) !void {
682	try ref_map.put(ref, {});	682	try ref_map.put(ref, {});
683	try w.writeAll(" ");	683	try w.writeAll(" ");
684	try ir.writeRef(decl, ref_map, ref, config, w);	684	try ir.writeRef(decl, ref_map, ref, config, w);
...	@@ -687,7 +687,7 @@ fn writeNewRef(ir: Ir, decl: const Decl, ref_map: RefMap, ref: Ref, config: st	...	@@ -687,7 +687,7 @@ fn writeNewRef(ir: Ir, decl: const Decl, ref_map: RefMap, ref: Ref, config: st
687	try config.setColor(w, INST);	687	try config.setColor(w, INST);
688	}	688	}
689		689
690	fn writeLabel(decl: const Decl, label_map: RefMap, ref: Ref, config: std.io.tty.Config, w: anytype) !void {	690	fn writeLabel(decl: const Decl, label_map: RefMap, ref: Ref, config: std.Io.tty.Config, w: anytype) !void {
691	assert(ref != .none);	691	assert(ref != .none);
692	const index = @intFromEnum(ref);	692	const index = @intFromEnum(ref);
693	const label = decl.instructions.items(.data)[index].label;	693	const label = decl.instructions.items(.data)[index].label;

...	@@ -124,13 +124,13 @@ pub const Diagnostics = struct {	...	@@ -124,13 +124,13 @@ pub const Diagnostics = struct {
124	try self.errors.append(self.allocator, error_details);	124	try self.errors.append(self.allocator, error_details);
125	}	125	}
126		126
127	pub fn renderToStdErr(self: *Diagnostics, args: []const []const u8, config: std.io.tty.Config) void {	127	pub fn renderToStdErr(self: *Diagnostics, args: []const []const u8, config: std.Io.tty.Config) void {
128	const stderr = std.debug.lockStderrWriter(&.{});	128	const stderr = std.debug.lockStderrWriter(&.{});
129	defer std.debug.unlockStderrWriter();	129	defer std.debug.unlockStderrWriter();
130	self.renderToWriter(args, stderr, config) catch return;	130	self.renderToWriter(args, stderr, config) catch return;
131	}	131	}
132		132
133	pub fn renderToWriter(self: Diagnostics, args: []const []const u8, writer: std.io.Writer, config: std.io.tty.Config) !void {	133	pub fn renderToWriter(self: Diagnostics, args: []const []const u8, writer: std.Io.Writer, config: std.Io.tty.Config) !void {
134	for (self.errors.items) \|err_details\| {	134	for (self.errors.items) \|err_details\| {
135	try renderErrorMessage(writer, config, err_details, args);	135	try renderErrorMessage(writer, config, err_details, args);
136	}	136	}
...	@@ -1343,7 +1343,7 @@ test parsePercent {	...	@@ -1343,7 +1343,7 @@ test parsePercent {
1343	try std.testing.expectError(error.InvalidFormat, parsePercent("~1"));	1343	try std.testing.expectError(error.InvalidFormat, parsePercent("~1"));
1344	}	1344	}
1345		1345
1346	pub fn renderErrorMessage(writer: *std.io.Writer, config: std.io.tty.Config, err_details: Diagnostics.ErrorDetails, args: []const []const u8) !void {	1346	pub fn renderErrorMessage(writer: *std.Io.Writer, config: std.Io.tty.Config, err_details: Diagnostics.ErrorDetails, args: []const []const u8) !void {
1347	try config.setColor(writer, .dim);	1347	try config.setColor(writer, .dim);
1348	try writer.writeAll("<cli>");	1348	try writer.writeAll("<cli>");
1349	try config.setColor(writer, .reset);	1349	try config.setColor(writer, .reset);
...	@@ -1470,7 +1470,7 @@ fn testParseOutput(args: []const []const u8, expected_output: []const u8) !?Opti	...	@@ -1470,7 +1470,7 @@ fn testParseOutput(args: []const []const u8, expected_output: []const u8) !?Opti
1470	var diagnostics = Diagnostics.init(std.testing.allocator);	1470	var diagnostics = Diagnostics.init(std.testing.allocator);
1471	defer diagnostics.deinit();	1471	defer diagnostics.deinit();
1472		1472
1473	var output: std.io.Writer.Allocating = .init(std.testing.allocator);	1473	var output: std.Io.Writer.Allocating = .init(std.testing.allocator);
1474	defer output.deinit();	1474	defer output.deinit();
1475		1475
1476	var options = parse(std.testing.allocator, args, &diagnostics) catch \|err\| switch (err) {	1476	var options = parse(std.testing.allocator, args, &diagnostics) catch \|err\| switch (err) {

...	@@ -61,7 +61,7 @@ pub const Diagnostics = struct {	...	@@ -61,7 +61,7 @@ pub const Diagnostics = struct {
61	return @intCast(index);	61	return @intCast(index);
62	}	62	}
63		63
64	pub fn renderToStdErr(self: *Diagnostics, cwd: std.fs.Dir, source: []const u8, tty_config: std.io.tty.Config, source_mappings: ?SourceMappings) void {	64	pub fn renderToStdErr(self: *Diagnostics, cwd: std.fs.Dir, source: []const u8, tty_config: std.Io.tty.Config, source_mappings: ?SourceMappings) void {
65	const stderr = std.debug.lockStderrWriter(&.{});	65	const stderr = std.debug.lockStderrWriter(&.{});
66	defer std.debug.unlockStderrWriter();	66	defer std.debug.unlockStderrWriter();
67	for (self.errors.items) \|err_details\| {	67	for (self.errors.items) \|err_details\| {
...	@@ -70,7 +70,7 @@ pub const Diagnostics = struct {	...	@@ -70,7 +70,7 @@ pub const Diagnostics = struct {
70	}	70	}
71		71
72	pub fn renderToStdErrDetectTTY(self: *Diagnostics, cwd: std.fs.Dir, source: []const u8, source_mappings: ?SourceMappings) void {	72	pub fn renderToStdErrDetectTTY(self: *Diagnostics, cwd: std.fs.Dir, source: []const u8, source_mappings: ?SourceMappings) void {
73	const tty_config = std.io.tty.detectConfig(std.fs.File.stderr());	73	const tty_config = std.Io.tty.detectConfig(std.fs.File.stderr());
74	return self.renderToStdErr(cwd, source, tty_config, source_mappings);	74	return self.renderToStdErr(cwd, source, tty_config, source_mappings);
75	}	75	}
76		76
...	@@ -409,7 +409,7 @@ pub const ErrorDetails = struct {	...	@@ -409,7 +409,7 @@ pub const ErrorDetails = struct {
409	failed_to_open_cwd,	409	failed_to_open_cwd,
410	};	410	};
411		411
412	fn formatToken(ctx: TokenFormatContext, writer: *std.io.Writer) std.io.Writer.Error!void {	412	fn formatToken(ctx: TokenFormatContext, writer: *std.Io.Writer) std.Io.Writer.Error!void {
413	switch (ctx.token.id) {	413	switch (ctx.token.id) {
414	.eof => return writer.writeAll(ctx.token.id.nameForErrorDisplay()),	414	.eof => return writer.writeAll(ctx.token.id.nameForErrorDisplay()),
415	else => {},	415	else => {},
...	@@ -894,7 +894,7 @@ fn cellCount(code_page: SupportedCodePage, source: []const u8, start_index: usiz	...	@@ -894,7 +894,7 @@ fn cellCount(code_page: SupportedCodePage, source: []const u8, start_index: usiz
894		894
895	const truncated_str = "<...truncated...>";	895	const truncated_str = "<...truncated...>";
896		896
897	pub fn renderErrorMessage(writer: *std.io.Writer, tty_config: std.io.tty.Config, cwd: std.fs.Dir, err_details: ErrorDetails, source: []const u8, strings: []const []const u8, source_mappings: ?SourceMappings) !void {	897	pub fn renderErrorMessage(writer: *std.Io.Writer, tty_config: std.Io.tty.Config, cwd: std.fs.Dir, err_details: ErrorDetails, source: []const u8, strings: []const []const u8, source_mappings: ?SourceMappings) !void {
898	if (err_details.type == .hint) return;	898	if (err_details.type == .hint) return;
899		899
900	const source_line_start = err_details.token.getLineStartForErrorDisplay(source);	900	const source_line_start = err_details.token.getLineStartForErrorDisplay(source);

...	@@ -164,7 +164,7 @@ pub const Language = packed struct(u16) {	...	@@ -164,7 +164,7 @@ pub const Language = packed struct(u16) {
164	return @bitCast(self);	164	return @bitCast(self);
165	}	165	}
166		166
167	pub fn format(language: Language, w: *std.io.Writer) std.io.Writer.Error!void {	167	pub fn format(language: Language, w: *std.Io.Writer) std.Io.Writer.Error!void {
168	const language_id = language.asInt();	168	const language_id = language.asInt();
169	const language_name = language_name: {	169	const language_name = language_name: {
170	if (std.enums.fromInt(lang.LanguageId, language_id)) \|lang_enum_val\| {	170	if (std.enums.fromInt(lang.LanguageId, language_id)) \|lang_enum_val\| {
...	@@ -439,7 +439,7 @@ pub const NameOrOrdinal = union(enum) {	...	@@ -439,7 +439,7 @@ pub const NameOrOrdinal = union(enum) {
439	}	439	}
440	}	440	}
441		441
442	pub fn format(self: NameOrOrdinal, w: *std.io.Writer) !void {	442	pub fn format(self: NameOrOrdinal, w: *std.Io.Writer) !void {
443	switch (self) {	443	switch (self) {
444	.name => \|name\| {	444	.name => \|name\| {
445	try w.print("{f}", .{std.unicode.fmtUtf16Le(name)});	445	try w.print("{f}", .{std.unicode.fmtUtf16Le(name)});
...	@@ -450,7 +450,7 @@ pub const NameOrOrdinal = union(enum) {	...	@@ -450,7 +450,7 @@ pub const NameOrOrdinal = union(enum) {
450	}	450	}
451	}	451	}
452		452
453	fn formatResourceType(self: NameOrOrdinal, w: *std.io.Writer) std.io.Writer.Error!void {	453	fn formatResourceType(self: NameOrOrdinal, w: *std.Io.Writer) std.Io.Writer.Error!void {
454	switch (self) {	454	switch (self) {
455	.name => \|name\| {	455	.name => \|name\| {
456	try w.print("{f}", .{std.unicode.fmtUtf16Le(name)});	456	try w.print("{f}", .{std.unicode.fmtUtf16Le(name)});

...	@@ -286,7 +286,7 @@ pub const HashHelper = struct {	...	@@ -286,7 +286,7 @@ pub const HashHelper = struct {
286		286
287	pub fn binToHex(bin_digest: BinDigest) HexDigest {	287	pub fn binToHex(bin_digest: BinDigest) HexDigest {
288	var out_digest: HexDigest = undefined;	288	var out_digest: HexDigest = undefined;
289	var w: std.io.Writer = .fixed(&out_digest);	289	var w: std.Io.Writer = .fixed(&out_digest);
290	w.printHex(&bin_digest, .lower) catch unreachable;	290	w.printHex(&bin_digest, .lower) catch unreachable;
291	return out_digest;	291	return out_digest;
292	}	292	}
...	@@ -664,7 +664,7 @@ pub const Manifest = struct {	...	@@ -664,7 +664,7 @@ pub const Manifest = struct {
664	const input_file_count = self.files.entries.len;	664	const input_file_count = self.files.entries.len;
665	var tiny_buffer: [1]u8 = undefined; // allows allocRemaining to detect limit exceeded	665	var tiny_buffer: [1]u8 = undefined; // allows allocRemaining to detect limit exceeded
666	var manifest_reader = self.manifest_file.?.reader(&tiny_buffer); // Reads positionally from zero.	666	var manifest_reader = self.manifest_file.?.reader(&tiny_buffer); // Reads positionally from zero.
667	const limit: std.io.Limit = .limited(manifest_file_size_max);	667	const limit: std.Io.Limit = .limited(manifest_file_size_max);
668	const file_contents = manifest_reader.interface.allocRemaining(gpa, limit) catch \|err\| switch (err) {	668	const file_contents = manifest_reader.interface.allocRemaining(gpa, limit) catch \|err\| switch (err) {
669	error.OutOfMemory => return error.OutOfMemory,	669	error.OutOfMemory => return error.OutOfMemory,
670	error.StreamTooLong => return error.OutOfMemory,	670	error.StreamTooLong => return error.OutOfMemory,
...	@@ -1056,7 +1056,7 @@ pub const Manifest = struct {	...	@@ -1056,7 +1056,7 @@ pub const Manifest = struct {
1056		1056
1057	fn addDepFileMaybePost(self: *Manifest, dir: fs.Dir, dep_file_basename: []const u8) !void {	1057	fn addDepFileMaybePost(self: *Manifest, dir: fs.Dir, dep_file_basename: []const u8) !void {
1058	const gpa = self.cache.gpa;	1058	const gpa = self.cache.gpa;
1059	const dep_file_contents = try dir.readFileAlloc(gpa, dep_file_basename, manifest_file_size_max);	1059	const dep_file_contents = try dir.readFileAlloc(dep_file_basename, gpa, .limited(manifest_file_size_max));
1060	defer gpa.free(dep_file_contents);	1060	defer gpa.free(dep_file_contents);
1061		1061
1062	var error_buf: std.ArrayListUnmanaged(u8) = .empty;	1062	var error_buf: std.ArrayListUnmanaged(u8) = .empty;

...	@@ -151,7 +151,7 @@ pub fn fmtEscapeString(path: Path) std.fmt.Formatter(Path, formatEscapeString) {	...	@@ -151,7 +151,7 @@ pub fn fmtEscapeString(path: Path) std.fmt.Formatter(Path, formatEscapeString) {
151	return .{ .data = path };	151	return .{ .data = path };
152	}	152	}
153		153
154	pub fn formatEscapeString(path: Path, writer: *std.io.Writer) std.io.Writer.Error!void {	154	pub fn formatEscapeString(path: Path, writer: *std.Io.Writer) std.Io.Writer.Error!void {
155	if (path.root_dir.path) \|p\| {	155	if (path.root_dir.path) \|p\| {
156	try std.zig.stringEscape(p, writer);	156	try std.zig.stringEscape(p, writer);
157	if (path.sub_path.len > 0) try std.zig.stringEscape(fs.path.sep_str, writer);	157	if (path.sub_path.len > 0) try std.zig.stringEscape(fs.path.sep_str, writer);
...	@@ -167,7 +167,7 @@ pub fn fmtEscapeChar(path: Path) std.fmt.Formatter(Path, formatEscapeChar) {	...	@@ -167,7 +167,7 @@ pub fn fmtEscapeChar(path: Path) std.fmt.Formatter(Path, formatEscapeChar) {
167	}	167	}
168		168
169	/// Deprecated, use double quoted escape to print paths.	169	/// Deprecated, use double quoted escape to print paths.
170	pub fn formatEscapeChar(path: Path, writer: *std.io.Writer) std.io.Writer.Error!void {	170	pub fn formatEscapeChar(path: Path, writer: *std.Io.Writer) std.Io.Writer.Error!void {
171	if (path.root_dir.path) \|p\| {	171	if (path.root_dir.path) \|p\| {
172	for (p) \|byte\| try std.zig.charEscape(byte, writer);	172	for (p) \|byte\| try std.zig.charEscape(byte, writer);
173	if (path.sub_path.len > 0) try writer.writeByte(fs.path.sep);	173	if (path.sub_path.len > 0) try writer.writeByte(fs.path.sep);
...	@@ -177,7 +177,7 @@ pub fn formatEscapeChar(path: Path, writer: *std.io.Writer) std.io.Writer.Error!	...	@@ -177,7 +177,7 @@ pub fn formatEscapeChar(path: Path, writer: *std.io.Writer) std.io.Writer.Error!
177	}	177	}
178	}	178	}
179		179
180	pub fn format(self: Path, writer: *std.io.Writer) std.io.Writer.Error!void {	180	pub fn format(self: Path, writer: *std.Io.Writer) std.Io.Writer.Error!void {
181	if (std.fs.path.isAbsolute(self.sub_path)) {	181	if (std.fs.path.isAbsolute(self.sub_path)) {
182	try writer.writeAll(self.sub_path);	182	try writer.writeAll(self.sub_path);
183	return;	183	return;

...	@@ -3,7 +3,7 @@ thread_pool: *std.Thread.Pool,	...	@@ -3,7 +3,7 @@ thread_pool: *std.Thread.Pool,
3	graph: *const Build.Graph,	3	graph: *const Build.Graph,
4	all_steps: []const *Build.Step,	4	all_steps: []const *Build.Step,
5	listen_address: std.net.Address,	5	listen_address: std.net.Address,
6	ttyconf: std.io.tty.Config,	6	ttyconf: std.Io.tty.Config,
7	root_prog_node: std.Progress.Node,	7	root_prog_node: std.Progress.Node,
8	watch: bool,	8	watch: bool,
9		9
...	@@ -53,7 +53,7 @@ pub const Options = struct {	...	@@ -53,7 +53,7 @@ pub const Options = struct {
53	thread_pool: *std.Thread.Pool,	53	thread_pool: *std.Thread.Pool,
54	graph: *const std.Build.Graph,	54	graph: *const std.Build.Graph,
55	all_steps: []const *Build.Step,	55	all_steps: []const *Build.Step,
56	ttyconf: std.io.tty.Config,	56	ttyconf: std.Io.tty.Config,
57	root_prog_node: std.Progress.Node,	57	root_prog_node: std.Progress.Node,
58	watch: bool,	58	watch: bool,
59	listen_address: std.net.Address,	59	listen_address: std.net.Address,
...	@@ -446,7 +446,7 @@ pub fn serveFile(	...	@@ -446,7 +446,7 @@ pub fn serveFile(
446	// The desired API is actually sendfile, which will require enhancing http.Server.	446	// The desired API is actually sendfile, which will require enhancing http.Server.
447	// We load the file with every request so that the user can make changes to the file	447	// We load the file with every request so that the user can make changes to the file
448	// and refresh the HTML page without restarting this server.	448	// and refresh the HTML page without restarting this server.
449	const file_contents = path.root_dir.handle.readFileAlloc(gpa, path.sub_path, 10 * 1024 * 1024) catch \|err\| {	449	const file_contents = path.root_dir.handle.readFileAlloc(path.sub_path, gpa, .limited(10 * 1024 * 1024)) catch \|err\| {
450	log.err("failed to read '{f}': {s}", .{ path, @errorName(err) });	450	log.err("failed to read '{f}': {s}", .{ path, @errorName(err) });
451	return error.AlreadyReported;	451	return error.AlreadyReported;
452	};	452	};
...	@@ -557,7 +557,7 @@ fn buildClientWasm(ws: *WebServer, arena: Allocator, optimize: std.builtin.Optim	...	@@ -557,7 +557,7 @@ fn buildClientWasm(ws: *WebServer, arena: Allocator, optimize: std.builtin.Optim
557	child.stderr_behavior = .Pipe;	557	child.stderr_behavior = .Pipe;
558	try child.spawn();	558	try child.spawn();
559		559
560	var poller = std.io.poll(gpa, enum { stdout, stderr }, .{	560	var poller = std.Io.poll(gpa, enum { stdout, stderr }, .{
561	.stdout = child.stdout.?,	561	.stdout = child.stdout.?,
562	.stderr = child.stderr.?,	562	.stderr = child.stderr.?,
563	});	563	});

...	@@ -2029,11 +2029,11 @@ pub const Mutable = struct {	...	@@ -2029,11 +2029,11 @@ pub const Mutable = struct {
2029	r.len = llnormalize(r.limbs[0..length]);	2029	r.len = llnormalize(r.limbs[0..length]);
2030	}	2030	}
2031		2031
2032	pub fn format(self: Mutable, w: *std.io.Writer) std.io.Writer.Error!void {	2032	pub fn format(self: Mutable, w: *std.Io.Writer) std.Io.Writer.Error!void {
2033	return formatNumber(self, w, .{});	2033	return formatNumber(self, w, .{});
2034	}	2034	}
2035		2035
2036	pub fn formatNumber(self: Const, w: *std.io.Writer, n: std.fmt.Number) std.io.Writer.Error!void {	2036	pub fn formatNumber(self: Const, w: *std.Io.Writer, n: std.fmt.Number) std.Io.Writer.Error!void {
2037	return self.toConst().formatNumber(w, n);	2037	return self.toConst().formatNumber(w, n);
2038	}	2038	}
2039	};	2039	};
...	@@ -2326,7 +2326,7 @@ pub const Const = struct {	...	@@ -2326,7 +2326,7 @@ pub const Const = struct {
2326	/// this function will fail to print the string, printing "(BigInt)" instead of a number.	2326	/// this function will fail to print the string, printing "(BigInt)" instead of a number.
2327	/// This is because the rendering algorithm requires reversing a string, which requires O(N) memory.	2327	/// This is because the rendering algorithm requires reversing a string, which requires O(N) memory.
2328	/// See `toString` and `toStringAlloc` for a way to print big integers without failure.	2328	/// See `toString` and `toStringAlloc` for a way to print big integers without failure.
2329	pub fn formatNumber(self: Const, w: *std.io.Writer, number: std.fmt.Number) std.io.Writer.Error!void {	2329	pub fn formatNumber(self: Const, w: *std.Io.Writer, number: std.fmt.Number) std.Io.Writer.Error!void {
2330	const available_len = 64;	2330	const available_len = 64;
2331	if (self.limbs.len > available_len)	2331	if (self.limbs.len > available_len)
2332	return w.writeAll("(BigInt)");	2332	return w.writeAll("(BigInt)");
...	@@ -2907,7 +2907,7 @@ pub const Managed = struct {	...	@@ -2907,7 +2907,7 @@ pub const Managed = struct {
2907	}	2907	}
2908		2908
2909	/// To allow `std.fmt.format` to work with `Managed`.	2909	/// To allow `std.fmt.format` to work with `Managed`.
2910	pub fn format(self: Managed, w: *std.io.Writer) std.io.Writer.Error!void {	2910	pub fn format(self: Managed, w: *std.Io.Writer) std.Io.Writer.Error!void {
2911	return formatNumber(self, w, .{});	2911	return formatNumber(self, w, .{});
2912	}	2912	}
2913		2913
...	@@ -2915,7 +2915,7 @@ pub const Managed = struct {	...	@@ -2915,7 +2915,7 @@ pub const Managed = struct {
2915	/// this function will fail to print the string, printing "(BigInt)" instead of a number.	2915	/// this function will fail to print the string, printing "(BigInt)" instead of a number.
2916	/// This is because the rendering algorithm requires reversing a string, which requires O(N) memory.	2916	/// This is because the rendering algorithm requires reversing a string, which requires O(N) memory.
2917	/// See `toString` and `toStringAlloc` for a way to print big integers without failure.	2917	/// See `toString` and `toStringAlloc` for a way to print big integers without failure.
2918	pub fn formatNumber(self: Managed, w: *std.io.Writer, n: std.fmt.Number) std.io.Writer.Error!void {	2918	pub fn formatNumber(self: Managed, w: *std.Io.Writer, n: std.fmt.Number) std.Io.Writer.Error!void {
2919	return self.toConst().formatNumber(w, n);	2919	return self.toConst().formatNumber(w, n);
2920	}	2920	}
2921		2921

...	@@ -336,7 +336,7 @@ fn testCase(case: Case) !void {	...	@@ -336,7 +336,7 @@ fn testCase(case: Case) !void {
336	var file_name_buffer: [std.fs.max_path_bytes]u8 = undefined;	336	var file_name_buffer: [std.fs.max_path_bytes]u8 = undefined;
337	var link_name_buffer: [std.fs.max_path_bytes]u8 = undefined;	337	var link_name_buffer: [std.fs.max_path_bytes]u8 = undefined;
338		338
339	var br: std.io.Reader = .fixed(case.data);	339	var br: std.Io.Reader = .fixed(case.data);
340	var it: tar.Iterator = .init(&br, .{	340	var it: tar.Iterator = .init(&br, .{
341	.file_name_buffer = &file_name_buffer,	341	.file_name_buffer = &file_name_buffer,
342	.link_name_buffer = &link_name_buffer,	342	.link_name_buffer = &link_name_buffer,
...	@@ -387,7 +387,7 @@ fn testLongNameCase(case: Case) !void {	...	@@ -387,7 +387,7 @@ fn testLongNameCase(case: Case) !void {
387	var min_file_name_buffer: [256]u8 = undefined;	387	var min_file_name_buffer: [256]u8 = undefined;
388	var min_link_name_buffer: [100]u8 = undefined;	388	var min_link_name_buffer: [100]u8 = undefined;
389		389
390	var br: std.io.Reader = .fixed(case.data);	390	var br: std.Io.Reader = .fixed(case.data);
391	var iter: tar.Iterator = .init(&br, .{	391	var iter: tar.Iterator = .init(&br, .{
392	.file_name_buffer = &min_file_name_buffer,	392	.file_name_buffer = &min_file_name_buffer,
393	.link_name_buffer = &min_link_name_buffer,	393	.link_name_buffer = &min_link_name_buffer,
...	@@ -407,7 +407,7 @@ test "insufficient buffer in Header name filed" {	...	@@ -407,7 +407,7 @@ test "insufficient buffer in Header name filed" {
407	var min_file_name_buffer: [9]u8 = undefined;	407	var min_file_name_buffer: [9]u8 = undefined;
408	var min_link_name_buffer: [100]u8 = undefined;	408	var min_link_name_buffer: [100]u8 = undefined;
409		409
410	var br: std.io.Reader = .fixed(gnu_case.data);	410	var br: std.Io.Reader = .fixed(gnu_case.data);
411	var iter: tar.Iterator = .init(&br, .{	411	var iter: tar.Iterator = .init(&br, .{
412	.file_name_buffer = &min_file_name_buffer,	412	.file_name_buffer = &min_file_name_buffer,
413	.link_name_buffer = &min_link_name_buffer,	413	.link_name_buffer = &min_link_name_buffer,
...	@@ -462,7 +462,7 @@ test "should not overwrite existing file" {	...	@@ -462,7 +462,7 @@ test "should not overwrite existing file" {
462	// This ensures that file is not overwritten.	462	// This ensures that file is not overwritten.
463	//	463	//
464	const data = @embedFile("testdata/overwrite_file.tar");	464	const data = @embedFile("testdata/overwrite_file.tar");
465	var r: std.io.Reader = .fixed(data);	465	var r: std.Io.Reader = .fixed(data);
466		466
467	// Unpack with strip_components = 1 should fail	467	// Unpack with strip_components = 1 should fail
468	var root = std.testing.tmpDir(.{});	468	var root = std.testing.tmpDir(.{});
...	@@ -490,7 +490,7 @@ test "case sensitivity" {	...	@@ -490,7 +490,7 @@ test "case sensitivity" {
490	// 18089/alacritty/Darkermatrix.yml	490	// 18089/alacritty/Darkermatrix.yml
491	//	491	//
492	const data = @embedFile("testdata/18089.tar");	492	const data = @embedFile("testdata/18089.tar");
493	var r: std.io.Reader = .fixed(data);	493	var r: std.Io.Reader = .fixed(data);
494		494
495	var root = std.testing.tmpDir(.{});	495	var root = std.testing.tmpDir(.{});
496	defer root.cleanup();	496	defer root.cleanup();

...	@@ -11,7 +11,7 @@ const std = @import("std");	...	@@ -11,7 +11,7 @@ const std = @import("std");
11	const ErrorBundle = @This();	11	const ErrorBundle = @This();
12	const Allocator = std.mem.Allocator;	12	const Allocator = std.mem.Allocator;
13	const assert = std.debug.assert;	13	const assert = std.debug.assert;
14	const Writer = std.io.Writer;	14	const Writer = std.Io.Writer;
15		15
16	string_bytes: []const u8,	16	string_bytes: []const u8,
17	/// The first thing in this array is an `ErrorMessageList`.	17	/// The first thing in this array is an `ErrorMessageList`.
...	@@ -156,7 +156,7 @@ pub fn nullTerminatedString(eb: ErrorBundle, index: String) [:0]const u8 {	...	@@ -156,7 +156,7 @@ pub fn nullTerminatedString(eb: ErrorBundle, index: String) [:0]const u8 {
156	}	156	}
157		157
158	pub const RenderOptions = struct {	158	pub const RenderOptions = struct {
159	ttyconf: std.io.tty.Config,	159	ttyconf: std.Io.tty.Config,
160	include_reference_trace: bool = true,	160	include_reference_trace: bool = true,
161	include_source_line: bool = true,	161	include_source_line: bool = true,
162	include_log_text: bool = true,	162	include_log_text: bool = true,
...	@@ -190,14 +190,14 @@ fn renderErrorMessageToWriter(	...	@@ -190,14 +190,14 @@ fn renderErrorMessageToWriter(
190	err_msg_index: MessageIndex,	190	err_msg_index: MessageIndex,
191	w: *Writer,	191	w: *Writer,
192	kind: []const u8,	192	kind: []const u8,
193	color: std.io.tty.Color,	193	color: std.Io.tty.Color,
194	indent: usize,	194	indent: usize,
195	) (Writer.Error \|\| std.posix.UnexpectedError)!void {	195	) (Writer.Error \|\| std.posix.UnexpectedError)!void {
196	const ttyconf = options.ttyconf;	196	const ttyconf = options.ttyconf;
197	const err_msg = eb.getErrorMessage(err_msg_index);	197	const err_msg = eb.getErrorMessage(err_msg_index);
198	if (err_msg.src_loc != .none) {	198	if (err_msg.src_loc != .none) {
199	const src = eb.extraData(SourceLocation, @intFromEnum(err_msg.src_loc));	199	const src = eb.extraData(SourceLocation, @intFromEnum(err_msg.src_loc));
200	var prefix: std.io.Writer.Discarding = .init(&.{});	200	var prefix: Writer.Discarding = .init(&.{});
201	try w.splatByteAll(' ', indent);	201	try w.splatByteAll(' ', indent);
202	prefix.count += indent;	202	prefix.count += indent;
203	try ttyconf.setColor(w, .bold);	203	try ttyconf.setColor(w, .bold);
...	@@ -794,9 +794,9 @@ pub const Wip = struct {	...	@@ -794,9 +794,9 @@ pub const Wip = struct {
794	};	794	};
795	defer bundle.deinit(std.testing.allocator);	795	defer bundle.deinit(std.testing.allocator);
796		796
797	const ttyconf: std.io.tty.Config = .no_color;	797	const ttyconf: std.Io.tty.Config = .no_color;
798		798
799	var bundle_buf: std.io.Writer.Allocating = .init(std.testing.allocator);	799	var bundle_buf: Writer.Allocating = .init(std.testing.allocator);
800	const bundle_bw = &bundle_buf.interface;	800	const bundle_bw = &bundle_buf.interface;
801	defer bundle_buf.deinit();	801	defer bundle_buf.deinit();
802	try bundle.renderToWriter(.{ .ttyconf = ttyconf }, bundle_bw);	802	try bundle.renderToWriter(.{ .ttyconf = ttyconf }, bundle_bw);
...	@@ -812,7 +812,7 @@ pub const Wip = struct {	...	@@ -812,7 +812,7 @@ pub const Wip = struct {
812	};	812	};
813	defer copy.deinit(std.testing.allocator);	813	defer copy.deinit(std.testing.allocator);
814		814
815	var copy_buf: std.io.Writer.Allocating = .init(std.testing.allocator);	815	var copy_buf: Writer.Allocating = .init(std.testing.allocator);
816	const copy_bw = &copy_buf.interface;	816	const copy_bw = &copy_buf.interface;
817	defer copy_buf.deinit();	817	defer copy_buf.deinit();
818	try copy.renderToWriter(.{ .ttyconf = ttyconf }, copy_bw);	818	try copy.renderToWriter(.{ .ttyconf = ttyconf }, copy_bw);

...	@@ -9,7 +9,7 @@ const StringIndexContext = std.hash_map.StringIndexContext;	...	@@ -9,7 +9,7 @@ const StringIndexContext = std.hash_map.StringIndexContext;
9	const ZonGen = @This();	9	const ZonGen = @This();
10	const Zoir = @import("Zoir.zig");	10	const Zoir = @import("Zoir.zig");
11	const Ast = @import("Ast.zig");	11	const Ast = @import("Ast.zig");
12	const Writer = std.io.Writer;	12	const Writer = std.Io.Writer;
13		13
14	gpa: Allocator,	14	gpa: Allocator,
15	tree: Ast,	15	tree: Ast,
...	@@ -472,7 +472,7 @@ fn appendIdentStr(zg: *ZonGen, ident_token: Ast.TokenIndex) error{ OutOfMemory,	...	@@ -472,7 +472,7 @@ fn appendIdentStr(zg: *ZonGen, ident_token: Ast.TokenIndex) error{ OutOfMemory,
472	const raw_string = zg.tree.tokenSlice(ident_token)[offset..];	472	const raw_string = zg.tree.tokenSlice(ident_token)[offset..];
473	try zg.string_bytes.ensureUnusedCapacity(gpa, raw_string.len);	473	try zg.string_bytes.ensureUnusedCapacity(gpa, raw_string.len);
474	const result = r: {	474	const result = r: {
475	var aw: std.io.Writer.Allocating = .fromArrayList(gpa, &zg.string_bytes);	475	var aw: Writer.Allocating = .fromArrayList(gpa, &zg.string_bytes);
476	defer zg.string_bytes = aw.toArrayList();	476	defer zg.string_bytes = aw.toArrayList();
477	break :r std.zig.string_literal.parseWrite(&aw.writer, raw_string) catch \|err\| switch (err) {	477	break :r std.zig.string_literal.parseWrite(&aw.writer, raw_string) catch \|err\| switch (err) {
478	error.WriteFailed => return error.OutOfMemory,	478	error.WriteFailed => return error.OutOfMemory,
...	@@ -570,7 +570,7 @@ fn strLitAsString(zg: *ZonGen, str_node: Ast.Node.Index) error{ OutOfMemory, Bad	...	@@ -570,7 +570,7 @@ fn strLitAsString(zg: *ZonGen, str_node: Ast.Node.Index) error{ OutOfMemory, Bad
570	const size_hint = strLitSizeHint(zg.tree, str_node);	570	const size_hint = strLitSizeHint(zg.tree, str_node);
571	try string_bytes.ensureUnusedCapacity(gpa, size_hint);	571	try string_bytes.ensureUnusedCapacity(gpa, size_hint);
572	const result = r: {	572	const result = r: {
573	var aw: std.io.Writer.Allocating = .fromArrayList(gpa, &zg.string_bytes);	573	var aw: Writer.Allocating = .fromArrayList(gpa, &zg.string_bytes);
574	defer zg.string_bytes = aw.toArrayList();	574	defer zg.string_bytes = aw.toArrayList();
575	break :r parseStrLit(zg.tree, str_node, &aw.writer) catch \|err\| switch (err) {	575	break :r parseStrLit(zg.tree, str_node, &aw.writer) catch \|err\| switch (err) {
576	error.WriteFailed => return error.OutOfMemory,	576	error.WriteFailed => return error.OutOfMemory,
...	@@ -885,7 +885,7 @@ fn lowerAstErrors(zg: *ZonGen) Allocator.Error!void {	...	@@ -885,7 +885,7 @@ fn lowerAstErrors(zg: *ZonGen) Allocator.Error!void {
885	const tree = zg.tree;	885	const tree = zg.tree;
886	assert(tree.errors.len > 0);	886	assert(tree.errors.len > 0);
887		887
888	var msg: std.io.Writer.Allocating = .init(gpa);	888	var msg: Writer.Allocating = .init(gpa);
889	defer msg.deinit();	889	defer msg.deinit();
890	const msg_bw = &msg.writer;	890	const msg_bw = &msg.writer;
891		891

...	@@ -12,7 +12,7 @@ const ThreadPool = std.Thread.Pool;	...	@@ -12,7 +12,7 @@ const ThreadPool = std.Thread.Pool;
12	const WaitGroup = std.Thread.WaitGroup;	12	const WaitGroup = std.Thread.WaitGroup;
13	const ErrorBundle = std.zig.ErrorBundle;	13	const ErrorBundle = std.zig.ErrorBundle;
14	const fatal = std.process.fatal;	14	const fatal = std.process.fatal;
15	const Writer = std.io.Writer;	15	const Writer = std.Io.Writer;
16		16
17	const Value = @import("Value.zig");	17	const Value = @import("Value.zig");
18	const Type = @import("Type.zig");	18	const Type = @import("Type.zig");
...	@@ -468,7 +468,7 @@ pub const Path = struct {	...	@@ -468,7 +468,7 @@ pub const Path = struct {
468	const Formatter = struct {	468	const Formatter = struct {
469	p: Path,	469	p: Path,
470	comp: *Compilation,	470	comp: *Compilation,
471	pub fn format(f: Formatter, w: *std.io.Writer) std.io.Writer.Error!void {	471	pub fn format(f: Formatter, w: *Writer) Writer.Error!void {
472	const root_path: []const u8 = switch (f.p.root) {	472	const root_path: []const u8 = switch (f.p.root) {
473	.zig_lib => f.comp.dirs.zig_lib.path orelse ".",	473	.zig_lib => f.comp.dirs.zig_lib.path orelse ".",
474	.global_cache => f.comp.dirs.global_cache.path orelse ".",	474	.global_cache => f.comp.dirs.global_cache.path orelse ".",
...	@@ -1883,7 +1883,7 @@ pub const CreateDiagnostic = union(enum) {	...	@@ -1883,7 +1883,7 @@ pub const CreateDiagnostic = union(enum) {
1883	sub: []const u8,	1883	sub: []const u8,
1884	err: (fs.Dir.MakeError \|\| fs.Dir.OpenError \|\| fs.Dir.StatFileError),	1884	err: (fs.Dir.MakeError \|\| fs.Dir.OpenError \|\| fs.Dir.StatFileError),
1885	};	1885	};
1886	pub fn format(diag: CreateDiagnostic, w: *std.Io.Writer) std.Io.Writer.Error!void {	1886	pub fn format(diag: CreateDiagnostic, w: *Writer) Writer.Error!void {
1887	switch (diag) {	1887	switch (diag) {
1888	.export_table_import_table_conflict => try w.writeAll("'--import-table' and '--export-table' cannot be used together"),	1888	.export_table_import_table_conflict => try w.writeAll("'--import-table' and '--export-table' cannot be used together"),
1889	.emit_h_without_zcu => try w.writeAll("cannot emit C header with no Zig source files"),	1889	.emit_h_without_zcu => try w.writeAll("cannot emit C header with no Zig source files"),
...	@@ -6457,7 +6457,7 @@ fn updateWin32Resource(comp: Compilation, win32_resource: Win32Resource, win32	...	@@ -6457,7 +6457,7 @@ fn updateWin32Resource(comp: Compilation, win32_resource: Win32Resource, win32
6457		6457
6458	// In .rc files, a " within a quoted string is escaped as ""	6458	// In .rc files, a " within a quoted string is escaped as ""
6459	const fmtRcEscape = struct {	6459	const fmtRcEscape = struct {
6460	fn formatRcEscape(bytes: []const u8, writer: *std.io.Writer) std.io.Writer.Error!void {	6460	fn formatRcEscape(bytes: []const u8, writer: *Writer) Writer.Error!void {
6461	for (bytes) \|byte\| switch (byte) {	6461	for (bytes) \|byte\| switch (byte) {
6462	'"' => try writer.writeAll("\"\""),	6462	'"' => try writer.writeAll("\"\""),
6463	'\\' => try writer.writeAll("\\\\"),	6463	'\\' => try writer.writeAll("\\\\"),
...	@@ -6576,7 +6576,7 @@ fn updateWin32Resource(comp: Compilation, win32_resource: Win32Resource, win32	...	@@ -6576,7 +6576,7 @@ fn updateWin32Resource(comp: Compilation, win32_resource: Win32Resource, win32
6576	// Read depfile and update cache manifest	6576	// Read depfile and update cache manifest
6577	{	6577	{
6578	const dep_basename = fs.path.basename(out_dep_path);	6578	const dep_basename = fs.path.basename(out_dep_path);
6579	const dep_file_contents = try zig_cache_tmp_dir.readFileAlloc(arena, dep_basename, 50 * 1024 * 1024);	6579	const dep_file_contents = try zig_cache_tmp_dir.readFileAlloc(dep_basename, arena, .limited(50 * 1024 * 1024));
6580	defer arena.free(dep_file_contents);	6580	defer arena.free(dep_file_contents);
6581		6581
6582	const value = try std.json.parseFromSliceLeaky(std.json.Value, arena, dep_file_contents, .{});	6582	const value = try std.json.parseFromSliceLeaky(std.json.Value, arena, dep_file_contents, .{});

...	@@ -146,7 +146,7 @@ pub const Oid = union(Format) {	...	@@ -146,7 +146,7 @@ pub const Oid = union(Format) {
146	} else error.InvalidOid;	146	} else error.InvalidOid;
147	}	147	}
148		148
149	pub fn format(oid: Oid, writer: *std.io.Writer) std.io.Writer.Error!void {	149	pub fn format(oid: Oid, writer: *std.Io.Writer) std.Io.Writer.Error!void {
150	try writer.print("{x}", .{oid.slice()});	150	try writer.print("{x}", .{oid.slice()});
151	}	151	}
152		152
...	@@ -1599,7 +1599,7 @@ fn runRepositoryTest(comptime format: Oid.Format, head_commit: []const u8) !void	...	@@ -1599,7 +1599,7 @@ fn runRepositoryTest(comptime format: Oid.Format, head_commit: []const u8) !void
1599	const max_file_size = 8192;	1599	const max_file_size = 8192;
1600		1600
1601	if (!skip_checksums) {	1601	if (!skip_checksums) {
1602	const index_file_data = try git_dir.dir.readFileAlloc(testing.allocator, "testrepo.idx", max_file_size);	1602	const index_file_data = try git_dir.dir.readFileAlloc("testrepo.idx", testing.allocator, .limited(max_file_size));
1603	defer testing.allocator.free(index_file_data);	1603	defer testing.allocator.free(index_file_data);
1604	// testrepo.idx is generated by Git. The index created by this file should	1604	// testrepo.idx is generated by Git. The index created by this file should
1605	// match it exactly. Running `git verify-pack -v testrepo.pack` can verify	1605	// match it exactly. Running `git verify-pack -v testrepo.pack` can verify
...	@@ -1675,7 +1675,7 @@ fn runRepositoryTest(comptime format: Oid.Format, head_commit: []const u8) !void	...	@@ -1675,7 +1675,7 @@ fn runRepositoryTest(comptime format: Oid.Format, head_commit: []const u8) !void
1675	\\revision 19	1675	\\revision 19
1676	\\	1676	\\
1677	;	1677	;
1678	const actual_file_contents = try worktree.dir.readFileAlloc(testing.allocator, "file", max_file_size);	1678	const actual_file_contents = try worktree.dir.readFileAlloc("file", testing.allocator, .limited(max_file_size));
1679	defer testing.allocator.free(actual_file_contents);	1679	defer testing.allocator.free(actual_file_contents);
1680	try testing.expectEqualStrings(expected_file_contents, actual_file_contents);	1680	try testing.expectEqualStrings(expected_file_contents, actual_file_contents);
1681	}	1681	}

...	@@ -566,7 +566,7 @@ const InstTracking = struct {	...	@@ -566,7 +566,7 @@ const InstTracking = struct {
566	}	566	}
567	}	567	}
568		568
569	pub fn format(inst_tracking: InstTracking, writer: *std.io.Writer) std.io.Writer.Error!void {	569	pub fn format(inst_tracking: InstTracking, writer: *std.Io.Writer) std.Io.Writer.Error!void {
570	if (!std.meta.eql(inst_tracking.long, inst_tracking.short)) try writer.print("\|{}\| ", .{inst_tracking.long});	570	if (!std.meta.eql(inst_tracking.long, inst_tracking.short)) try writer.print("\|{}\| ", .{inst_tracking.long});
571	try writer.print("{}", .{inst_tracking.short});	571	try writer.print("{}", .{inst_tracking.short});
572	}	572	}
...	@@ -932,7 +932,7 @@ const FormatWipMirData = struct {	...	@@ -932,7 +932,7 @@ const FormatWipMirData = struct {
932	func: *Func,	932	func: *Func,
933	inst: Mir.Inst.Index,	933	inst: Mir.Inst.Index,
934	};	934	};
935	fn formatWipMir(data: FormatWipMirData, writer: *std.io.Writer) std.io.Writer.Error!void {	935	fn formatWipMir(data: FormatWipMirData, writer: *std.Io.Writer) std.Io.Writer.Error!void {
936	const pt = data.func.pt;	936	const pt = data.func.pt;
937	const comp = pt.zcu.comp;	937	const comp = pt.zcu.comp;
938	var lower: Lower = .{	938	var lower: Lower = .{
...	@@ -980,7 +980,7 @@ const FormatNavData = struct {	...	@@ -980,7 +980,7 @@ const FormatNavData = struct {
980	ip: *const InternPool,	980	ip: *const InternPool,
981	nav_index: InternPool.Nav.Index,	981	nav_index: InternPool.Nav.Index,
982	};	982	};
983	fn formatNav(data: FormatNavData, writer: *std.io.Writer) std.io.Writer.Error!void {	983	fn formatNav(data: FormatNavData, writer: *std.Io.Writer) std.Io.Writer.Error!void {
984	try writer.print("{f}", .{data.ip.getNav(data.nav_index).fqn.fmt(data.ip)});	984	try writer.print("{f}", .{data.ip.getNav(data.nav_index).fqn.fmt(data.ip)});
985	}	985	}
986	fn fmtNav(nav_index: InternPool.Nav.Index, ip: *const InternPool) std.fmt.Formatter(FormatNavData, formatNav) {	986	fn fmtNav(nav_index: InternPool.Nav.Index, ip: *const InternPool) std.fmt.Formatter(FormatNavData, formatNav) {
...	@@ -994,7 +994,7 @@ const FormatAirData = struct {	...	@@ -994,7 +994,7 @@ const FormatAirData = struct {
994	func: *Func,	994	func: *Func,
995	inst: Air.Inst.Index,	995	inst: Air.Inst.Index,
996	};	996	};
997	fn formatAir(data: FormatAirData, writer: *std.io.Writer) std.io.Writer.Error!void {	997	fn formatAir(data: FormatAirData, writer: *std.Io.Writer) std.Io.Writer.Error!void {
998	// Not acceptable implementation because it ignores `writer`:	998	// Not acceptable implementation because it ignores `writer`:
999	//data.func.air.dumpInst(data.inst, data.func.pt, data.func.liveness);	999	//data.func.air.dumpInst(data.inst, data.func.pt, data.func.liveness);
1000	_ = data;	1000	_ = data;
...	@@ -1008,7 +1008,7 @@ fn fmtAir(func: *Func, inst: Air.Inst.Index) std.fmt.Formatter(FormatAirData, fo	...	@@ -1008,7 +1008,7 @@ fn fmtAir(func: *Func, inst: Air.Inst.Index) std.fmt.Formatter(FormatAirData, fo
1008	const FormatTrackingData = struct {	1008	const FormatTrackingData = struct {
1009	func: *Func,	1009	func: *Func,
1010	};	1010	};
1011	fn formatTracking(data: FormatTrackingData, writer: *std.io.Writer) std.io.Writer.Error!void {	1011	fn formatTracking(data: FormatTrackingData, writer: *std.Io.Writer) std.Io.Writer.Error!void {
1012	var it = data.func.inst_tracking.iterator();	1012	var it = data.func.inst_tracking.iterator();
1013	while (it.next()) \|entry\| try writer.print("\n%{d} = {f}", .{ entry.key_ptr., entry.value_ptr. });	1013	while (it.next()) \|entry\| try writer.print("\n%{d} = {f}", .{ entry.key_ptr., entry.value_ptr. });
1014	}	1014	}

...	@@ -348,7 +348,7 @@ pub fn updateLineNumber(self: *C, pt: Zcu.PerThread, ti_id: InternPool.TrackedIn	...	@@ -348,7 +348,7 @@ pub fn updateLineNumber(self: *C, pt: Zcu.PerThread, ti_id: InternPool.TrackedIn
348	_ = ti_id;	348	_ = ti_id;
349	}	349	}
350		350
351	fn abiDefines(w: std.io.Writer, target: const std.Target) !void {	351	fn abiDefines(w: std.Io.Writer, target: const std.Target) !void {
352	switch (target.abi) {	352	switch (target.abi) {
353	.msvc, .itanium => try w.writeAll("#define ZIG_TARGET_ABI_MSVC\n"),	353	.msvc, .itanium => try w.writeAll("#define ZIG_TARGET_ABI_MSVC\n"),
354	else => {},	354	else => {},
...	@@ -400,7 +400,7 @@ pub fn flush(self: *C, arena: Allocator, tid: Zcu.PerThread.Id, prog_node: std.P	...	@@ -400,7 +400,7 @@ pub fn flush(self: *C, arena: Allocator, tid: Zcu.PerThread.Id, prog_node: std.P
400	};	400	};
401	defer f.deinit(gpa);	401	defer f.deinit(gpa);
402		402
403	var abi_defines_aw: std.io.Writer.Allocating = .init(gpa);	403	var abi_defines_aw: std.Io.Writer.Allocating = .init(gpa);
404	defer abi_defines_aw.deinit();	404	defer abi_defines_aw.deinit();
405	abiDefines(&abi_defines_aw.writer, zcu.getTarget()) catch \|err\| switch (err) {	405	abiDefines(&abi_defines_aw.writer, zcu.getTarget()) catch \|err\| switch (err) {
406	error.WriteFailed => return error.OutOfMemory,	406	error.WriteFailed => return error.OutOfMemory,
...	@@ -415,7 +415,7 @@ pub fn flush(self: *C, arena: Allocator, tid: Zcu.PerThread.Id, prog_node: std.P	...	@@ -415,7 +415,7 @@ pub fn flush(self: *C, arena: Allocator, tid: Zcu.PerThread.Id, prog_node: std.P
415	const ctypes_index = f.all_buffers.items.len;	415	const ctypes_index = f.all_buffers.items.len;
416	f.all_buffers.items.len += 1;	416	f.all_buffers.items.len += 1;
417		417
418	var asm_aw: std.io.Writer.Allocating = .init(gpa);	418	var asm_aw: std.Io.Writer.Allocating = .init(gpa);
419	defer asm_aw.deinit();	419	defer asm_aw.deinit();
420	codegen.genGlobalAsm(zcu, &asm_aw.writer) catch \|err\| switch (err) {	420	codegen.genGlobalAsm(zcu, &asm_aw.writer) catch \|err\| switch (err) {
421	error.WriteFailed => return error.OutOfMemory,	421	error.WriteFailed => return error.OutOfMemory,
...	@@ -582,7 +582,7 @@ fn flushCTypes(	...	@@ -582,7 +582,7 @@ fn flushCTypes(
582	try global_from_decl_map.ensureTotalCapacity(gpa, decl_ctype_pool.items.len);	582	try global_from_decl_map.ensureTotalCapacity(gpa, decl_ctype_pool.items.len);
583	defer global_from_decl_map.clearRetainingCapacity();	583	defer global_from_decl_map.clearRetainingCapacity();
584		584
585	var ctypes_aw: std.io.Writer.Allocating = .fromArrayList(gpa, &f.ctypes);	585	var ctypes_aw: std.Io.Writer.Allocating = .fromArrayList(gpa, &f.ctypes);
586	const ctypes_bw = &ctypes_aw.writer;	586	const ctypes_bw = &ctypes_aw.writer;
587	defer f.ctypes = ctypes_aw.toArrayList();	587	defer f.ctypes = ctypes_aw.toArrayList();
588		588

...	@@ -3869,7 +3869,7 @@ fn fmtShdr(self: *Elf, shdr: elf.Elf64_Shdr) std.fmt.Formatter(FormatShdr, forma	...	@@ -3869,7 +3869,7 @@ fn fmtShdr(self: *Elf, shdr: elf.Elf64_Shdr) std.fmt.Formatter(FormatShdr, forma
3869	} };	3869	} };
3870	}	3870	}
3871		3871
3872	fn formatShdr(ctx: FormatShdr, writer: *std.io.Writer) std.io.Writer.Error!void {	3872	fn formatShdr(ctx: FormatShdr, writer: *std.Io.Writer) std.Io.Writer.Error!void {
3873	const shdr = ctx.shdr;	3873	const shdr = ctx.shdr;
3874	try writer.print("{s} : @{x} ({x}) : align({x}) : size({x}) : entsize({x}) : flags({f})", .{	3874	try writer.print("{s} : @{x} ({x}) : align({x}) : size({x}) : entsize({x}) : flags({f})", .{
3875	ctx.elf_file.getShString(shdr.sh_name), shdr.sh_offset,	3875	ctx.elf_file.getShString(shdr.sh_name), shdr.sh_offset,
...	@@ -3883,7 +3883,7 @@ pub fn fmtShdrFlags(sh_flags: u64) std.fmt.Formatter(u64, formatShdrFlags) {	...	@@ -3883,7 +3883,7 @@ pub fn fmtShdrFlags(sh_flags: u64) std.fmt.Formatter(u64, formatShdrFlags) {
3883	return .{ .data = sh_flags };	3883	return .{ .data = sh_flags };
3884	}	3884	}
3885		3885
3886	fn formatShdrFlags(sh_flags: u64, writer: *std.io.Writer) std.io.Writer.Error!void {	3886	fn formatShdrFlags(sh_flags: u64, writer: *std.Io.Writer) std.Io.Writer.Error!void {
3887	if (elf.SHF_WRITE & sh_flags != 0) {	3887	if (elf.SHF_WRITE & sh_flags != 0) {
3888	try writer.writeAll("W");	3888	try writer.writeAll("W");
3889	}	3889	}
...	@@ -3940,7 +3940,7 @@ fn fmtPhdr(self: *Elf, phdr: elf.Elf64_Phdr) std.fmt.Formatter(FormatPhdr, forma	...	@@ -3940,7 +3940,7 @@ fn fmtPhdr(self: *Elf, phdr: elf.Elf64_Phdr) std.fmt.Formatter(FormatPhdr, forma
3940	} };	3940	} };
3941	}	3941	}
3942		3942
3943	fn formatPhdr(ctx: FormatPhdr, writer: *std.io.Writer) std.io.Writer.Error!void {	3943	fn formatPhdr(ctx: FormatPhdr, writer: *std.Io.Writer) std.Io.Writer.Error!void {
3944	const phdr = ctx.phdr;	3944	const phdr = ctx.phdr;
3945	const write = phdr.p_flags & elf.PF_W != 0;	3945	const write = phdr.p_flags & elf.PF_W != 0;
3946	const read = phdr.p_flags & elf.PF_R != 0;	3946	const read = phdr.p_flags & elf.PF_R != 0;
...	@@ -3971,7 +3971,7 @@ pub fn dumpState(self: Elf) std.fmt.Formatter(Elf, fmtDumpState) {	...	@@ -3971,7 +3971,7 @@ pub fn dumpState(self: Elf) std.fmt.Formatter(Elf, fmtDumpState) {
3971	return .{ .data = self };	3971	return .{ .data = self };
3972	}	3972	}
3973		3973
3974	fn fmtDumpState(self: Elf, writer: std.io.Writer) std.io.Writer.Error!void {	3974	fn fmtDumpState(self: Elf, writer: std.Io.Writer) std.Io.Writer.Error!void {
3975	const shared_objects = self.shared_objects.values();	3975	const shared_objects = self.shared_objects.values();
3976		3976
3977	if (self.zigObjectPtr()) \|zig_object\| {	3977	if (self.zigObjectPtr()) \|zig_object\| {
...	@@ -4189,7 +4189,7 @@ pub const Ref = struct {	...	@@ -4189,7 +4189,7 @@ pub const Ref = struct {
4189	return ref.index == other.index and ref.file == other.file;	4189	return ref.index == other.index and ref.file == other.file;
4190	}	4190	}
4191		4191
4192	pub fn format(ref: Ref, writer: *std.io.Writer) std.io.Writer.Error!void {	4192	pub fn format(ref: Ref, writer: *std.Io.Writer) std.Io.Writer.Error!void {
4193	try writer.print("ref({d},{d})", .{ ref.index, ref.file });	4193	try writer.print("ref({d},{d})", .{ ref.index, ref.file });
4194	}	4194	}
4195	};	4195	};

...	@@ -57,7 +57,7 @@ pub const Node = struct {	...	@@ -57,7 +57,7 @@ pub const Node = struct {
57	}	57	}
58	}	58	}
59		59
60	pub fn format(self: const Node, writer: std.io.Writer) std.io.Writer.Error!void {	60	pub fn format(self: const Node, writer: std.Io.Writer) std.Io.Writer.Error!void {
61	switch (self.tag) {	61	switch (self.tag) {
62	inline else => \|tag\| return @as(*tag.Type(), @fieldParentPtr("base", self)).format(writer),	62	inline else => \|tag\| return @as(*tag.Type(), @fieldParentPtr("base", self)).format(writer),
63	}	63	}
...	@@ -81,7 +81,7 @@ pub const Node = struct {	...	@@ -81,7 +81,7 @@ pub const Node = struct {
81	}	81	}
82	}	82	}
83		83
84	pub fn format(self: const Doc, writer: std.io.Writer) std.io.Writer.Error!void {	84	pub fn format(self: const Doc, writer: std.Io.Writer) std.Io.Writer.Error!void {
85	if (self.directive) \|id\| {	85	if (self.directive) \|id\| {
86	try writer.print("{{ ", .{});	86	try writer.print("{{ ", .{});
87	const directive = self.base.tree.getRaw(id, id);	87	const directive = self.base.tree.getRaw(id, id);
...	@@ -121,7 +121,7 @@ pub const Node = struct {	...	@@ -121,7 +121,7 @@ pub const Node = struct {
121	self.values.deinit(allocator);	121	self.values.deinit(allocator);
122	}	122	}
123		123
124	pub fn format(self: const Map, writer: std.io.Writer) std.io.Writer.Error!void {	124	pub fn format(self: const Map, writer: std.Io.Writer) std.Io.Writer.Error!void {
125	try std.fmt.format(writer, "{{ ", .{});	125	try std.fmt.format(writer, "{{ ", .{});
126	for (self.values.items) \|entry\| {	126	for (self.values.items) \|entry\| {
127	const key = self.base.tree.getRaw(entry.key, entry.key);	127	const key = self.base.tree.getRaw(entry.key, entry.key);
...	@@ -153,7 +153,7 @@ pub const Node = struct {	...	@@ -153,7 +153,7 @@ pub const Node = struct {
153	self.values.deinit(allocator);	153	self.values.deinit(allocator);
154	}	154	}
155		155
156	pub fn format(self: const List, writer: std.io.Writer) std.io.Writer.Error!void {	156	pub fn format(self: const List, writer: std.Io.Writer) std.Io.Writer.Error!void {
157	try std.fmt.format(writer, "[ ", .{});	157	try std.fmt.format(writer, "[ ", .{});
158	for (self.values.items) \|node\| {	158	for (self.values.items) \|node\| {
159	try std.fmt.format(writer, "{}, ", .{node});	159	try std.fmt.format(writer, "{}, ", .{node});
...	@@ -177,7 +177,7 @@ pub const Node = struct {	...	@@ -177,7 +177,7 @@ pub const Node = struct {
177	self.string_value.deinit(allocator);	177	self.string_value.deinit(allocator);
178	}	178	}
179		179
180	pub fn format(self: const Value, writer: std.io.Writer) std.io.Writer.Error!void {	180	pub fn format(self: const Value, writer: std.Io.Writer) std.Io.Writer.Error!void {
181	const raw = self.base.tree.getRaw(self.base.start, self.base.end);	181	const raw = self.base.tree.getRaw(self.base.start, self.base.end);
182	return std.fmt.format(writer, "{s}", .{raw});	182	return std.fmt.format(writer, "{s}", .{raw});
183	}	183	}

Merge pull request #25077 from ziglang/GenericReader