authorgravatar for xavierb@gmail.comXavier Bouchoux <xavierb@gmail.com> 2023-10-08 11:35:33+02:00
committergravatar for xavierb@gmail.comXavier Bouchoux <xavierb@gmail.com> 2023-10-08 11:37:49+02:00
log703fe0f121df9df44721250528e508762e161780
tree0489c33ab216fb2b0817168e70b455cbc8d77176
parent40528b8a9348fc615cc36a85eebd8cc6ee184333

test: add a pair of cases from bug reports

2 files changed, 57 insertions(+), 0 deletions(-)

test/behavior/packed-struct.zig+29
......@@ -1036,3 +1036,32 @@ test "modify nested packed struct aligned field" {
10361036 try std.testing.expectEqual(@as(u8, 1), opts.pretty_print.indent);
10371037 try std.testing.expect(!opts.baz);
10381038}
1039
1040test "assigning packed struct inside another packed struct" {
1041 // Originally reported at https://github.com/ziglang/zig/issues/9674
1042
1043 const S = struct {
1044 const Inner = packed struct {
1045 bits: u3,
1046 more_bits: u6,
1047 };
1048
1049 const Outer = packed struct {
1050 padding: u5,
1051 inner: Inner,
1052 };
1053 fn t(inner: Inner) void {
1054 r.inner = inner;
1055 }
1056
1057 var mem: Outer = undefined;
1058 var r: *volatile Outer = &mem;
1059 };
1060
1061 const val = S.Inner{ .bits = 1, .more_bits = 11 };
1062 S.mem.padding = 0;
1063 S.t(val);
1064
1065 try expectEqual(val, S.mem.inner);
1066 try expect(S.mem.padding == 0);
1067}
test/behavior/packed-union.zig+28
......@@ -85,3 +85,31 @@ test "flags in packed union at offset" {
8585 try expectEqual(false, test_bits.adv_flags.adv.flags.enable_1);
8686 try expectEqual(false, test_bits.adv_flags.adv.flags.enable_2);
8787}
88
89test "packed union in packed struct" {
90 // Originally reported at https://github.com/ziglang/zig/issues/16581
91
92 const ReadRequest = packed struct { key: i32 };
93 const RequestType = enum {
94 read,
95 insert,
96 };
97 const RequestUnion = packed union {
98 read: ReadRequest,
99 };
100
101 const Request = packed struct {
102 active_type: RequestType,
103 request: RequestUnion,
104 const Self = @This();
105
106 fn init(read: ReadRequest) Self {
107 return .{
108 .active_type = .read,
109 .request = RequestUnion{ .read = read },
110 };
111 }
112 };
113
114 try std.testing.expectEqual(RequestType.read, Request.init(.{ .key = 3 }).active_type);
115}