Commit 65092d6e4c33043fcd7025a1e8190dbeac943882 | zig

author	GasInfinity <me@gasinfinity.dev> 2026-01-10 14:20:22+01:00
committer	Alex Rønne Petersen <alex@alexrp.com> 2026-01-13 05:58:41+01:00
log	65092d6e4c33043fcd7025a1e8190dbeac943882
tree	6d7650cb2f3f46c7fc51a2121873b522a6e33815
parent	8e69ab8a31809f1e7e6fe8de67faa36b63219270

fix(libzigc): properly handle EOF in `ctype`

* EOF is defined as a negative integer, thus it doesn't fit in an `u8`!

1 files changed, 15 insertions(+), 15 deletions(-)

lib
- c
  - ctype.zig

lib/c/ctype.zig+15-15

...	...	@@ -55,10 +55,10 @@ comptime {
55	55	}
56	56	}
57	57
58		// NOTE: If the input is not representable as an unsigned char or is not EOF the behaviour is undefined.
	58	// NOTE: If the input is not representable as an unsigned char or is not EOF (which is a negative integer value) the behaviour is undefined.
59	59
60	60	fn isalnum(c: c_int) callconv(.c) c_int {
61		return @intFromBool(std.ascii.isAlphanumeric(@intCast(c)));
	61	return @intFromBool(std.ascii.isAlphanumeric(@truncate(@as(c_uint, @bitCast(c))))); // @truncate instead of @intCast as we have to handle EOF
62	62	}
63	63
64	64	fn __isalnum_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -67,7 +67,7 @@ fn __isalnum_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
67	67	}
68	68
69	69	fn isalpha(c: c_int) callconv(.c) c_int {
70		return @intFromBool(std.ascii.isAlphabetic(@intCast(c)));
	70	return @intFromBool(std.ascii.isAlphabetic(@truncate(@as(c_uint, @bitCast(c)))));
71	71	}
72	72
73	73	fn __isalpha_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -85,7 +85,7 @@ fn __isblank_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
85	85	}
86	86
87	87	fn iscntrl(c: c_int) callconv(.c) c_int {
88		return @intFromBool(std.ascii.isControl(@intCast(c)));
	88	return @intFromBool(std.ascii.isControl(@truncate(@as(c_uint, @bitCast(c)))));
89	89	}
90	90
91	91	fn __iscntrl_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -94,7 +94,7 @@ fn __iscntrl_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
94	94	}
95	95
96	96	fn isdigit(c: c_int) callconv(.c) c_int {
97		return @intFromBool(std.ascii.isDigit(@intCast(c)));
	97	return @intFromBool(std.ascii.isDigit(@truncate(@as(c_uint, @bitCast(c)))));
98	98	}
99	99
100	100	fn __isdigit_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -103,7 +103,7 @@ fn __isdigit_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
103	103	}
104	104
105	105	fn isgraph(c: c_int) callconv(.c) c_int {
106		return @intFromBool(std.ascii.isGraphical(@intCast(c)));
	106	return @intFromBool(std.ascii.isGraphical(@truncate(@as(c_uint, @bitCast(c)))));
107	107	}
108	108
109	109	fn __isgraph_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -112,7 +112,7 @@ fn __isgraph_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
112	112	}
113	113
114	114	fn islower(c: c_int) callconv(.c) c_int {
115		return @intFromBool(std.ascii.isLower(@intCast(c)));
	115	return @intFromBool(std.ascii.isLower(@truncate(@as(c_uint, @bitCast(c)))));
116	116	}
117	117
118	118	fn __islower_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -121,7 +121,7 @@ fn __islower_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
121	121	}
122	122
123	123	fn isprint(c: c_int) callconv(.c) c_int {
124		return @intFromBool(std.ascii.isPrint(@intCast(c)));
	124	return @intFromBool(std.ascii.isPrint(@truncate(@as(c_uint, @bitCast(c)))));
125	125	}
126	126
127	127	fn __isprint_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -130,7 +130,7 @@ fn __isprint_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
130	130	}
131	131
132	132	fn ispunct(c: c_int) callconv(.c) c_int {
133		return @intFromBool(std.ascii.isPunctuation(@intCast(c)));
	133	return @intFromBool(std.ascii.isPunctuation(@truncate(@as(c_uint, @bitCast(c)))));
134	134	}
135	135
136	136	fn __ispunct_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -139,7 +139,7 @@ fn __ispunct_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
139	139	}
140	140
141	141	fn isspace(c: c_int) callconv(.c) c_int {
142		return @intFromBool(std.ascii.isWhitespace(@intCast(c)));
	142	return @intFromBool(std.ascii.isWhitespace(@truncate(@as(c_uint, @bitCast(c)))));
143	143	}
144	144
145	145	fn __isspace_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -148,7 +148,7 @@ fn __isspace_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
148	148	}
149	149
150	150	fn isupper(c: c_int) callconv(.c) c_int {
151		return @intFromBool(std.ascii.isUpper(@intCast(c)));
	151	return @intFromBool(std.ascii.isUpper(@truncate(@as(c_uint, @bitCast(c)))));
152	152	}
153	153
154	154	fn __isupper_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -157,7 +157,7 @@ fn __isupper_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
157	157	}
158	158
159	159	fn isxdigit(c: c_int) callconv(.c) c_int {
160		return @intFromBool(std.ascii.isHex(@intCast(c)));
	160	return @intFromBool(std.ascii.isHex(@truncate(@as(c_uint, @bitCast(c)))));
161	161	}
162	162
163	163	fn __isxdigit_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -166,7 +166,7 @@ fn __isxdigit_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
166	166	}
167	167
168	168	fn tolower(c: c_int) callconv(.c) c_int {
169		return std.ascii.toLower(@intCast(c));
	169	return std.ascii.toLower(@truncate(@as(c_uint, @bitCast(c))));
170	170	}
171	171
172	172	fn __tolower_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -175,7 +175,7 @@ fn __tolower_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
175	175	}
176	176
177	177	fn toupper(c: c_int) callconv(.c) c_int {
178		return std.ascii.toUpper(@intCast(c));
	178	return std.ascii.toUpper(@truncate(@as(c_uint, @bitCast(c))));
179	179	}
180	180
181	181	fn __toupper_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
...	...	@@ -184,7 +184,7 @@ fn __toupper_l(c: c_int, locale: *anyopaque) callconv(.c) c_int {
184	184	}
185	185
186	186	fn isascii(c: c_int) callconv(.c) c_int {
187		return @intFromBool(std.ascii.isAscii(@intCast(c)));
	187	return @intFromBool(std.ascii.isAscii(@truncate(@as(c_uint, @bitCast(c)))));
188	188	}
189	189
190	190	fn toascii(c: c_int) callconv(.c) c_int {