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| author | wm4 <wm4@nowhere> | 2014-07-01 23:10:38 +0200 |
|---|---|---|
| committer | wm4 <wm4@nowhere> | 2014-07-01 23:11:08 +0200 |
| commit | 9a210ca2d50e02bf045866bbb2f44a33a3c48cd9 (patch) | |
| tree | 9f685c66c9d3b2e968416c7f60d30ea56ab1f9bb /video/out/gl_common.c | |
| parent | 0208ad4f3b4d2331b8242bb6fb12a9a4475ccae6 (diff) | |
| download | mpv-9a210ca2d50e02bf045866bbb2f44a33a3c48cd9.tar.bz2 mpv-9a210ca2d50e02bf045866bbb2f44a33a3c48cd9.tar.xz | |
Audit and replace all ctype.h uses
Something like "char *s = ...; isdigit(s[0]);" triggers undefined
behavior, because char can be signed, and thus s[0] can be a negative
value. The is*() functions require unsigned char _or_ EOF. EOF is a
special value outside of unsigned char range, thus the argument to the
is*() functions can't be a char.
This undefined behavior can actually trigger crashes if the
implementation of these functions e.g. uses lookup tables, which are
then indexed with out-of-range values.
Replace all <ctype.h> uses with our own custom mp_is*() functions added
with misc/ctype.h. As a bonus, these functions are locale-independent.
(Although currently, we _require_ C locale for other reasons.)
Diffstat (limited to 'video/out/gl_common.c')
| -rw-r--r-- | video/out/gl_common.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/video/out/gl_common.c b/video/out/gl_common.c index 131a35daaf..f9af3f32af 100644 --- a/video/out/gl_common.c +++ b/video/out/gl_common.c @@ -36,7 +36,6 @@ #include <stdlib.h> #include <stdio.h> #include <string.h> -#include <ctype.h> #include <stdbool.h> #include <math.h> #include <assert.h> |