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| author | Anton Khirnov <anton@khirnov.net> | 2013-02-13 21:36:25 +0100 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2013-02-23 14:40:30 +0100 |
| commit | 48fd461977f77f02668111769865e3740908e82a (patch) | |
| tree | 0de5e7da9bd6250076320f5376d8a85784876bfc /libavutil | |
| parent | 612b28194b4c1fb55c8620a8cddf77ea6e81b9bf (diff) | |
| download | ffmpeg-48fd461977f77f02668111769865e3740908e82a.tar.gz | |
av_memcpy_backptr: avoid an infinite loop for back = 0
CC:libav-stable@libav.org
(cherry picked from commit f935aca44c674d30e3ed940ef73bbad1228a5855)
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
Diffstat (limited to 'libavutil')
| -rw-r--r-- | libavutil/mem.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavutil/mem.c b/libavutil/mem.c index 3a4433d154..391eb7db38 100644 --- a/libavutil/mem.c +++ b/libavutil/mem.c @@ -252,6 +252,9 @@ static void fill32(uint8_t *dst, int len) void av_memcpy_backptr(uint8_t *dst, int back, int cnt) { const uint8_t *src = &dst[-back]; + if (!back) + return; + if (back == 1) { memset(dst, *src, cnt); } else if (back == 2) { |