[FFmpeg-cvslog] avutil/mathematics: Fix division by 0
Michael Niedermayer
git at videolan.org
Fri Jan 15 17:51:08 CET 2016
ffmpeg | branch: release/2.5 | Michael Niedermayer <michael at niedermayer.cc> | Wed Dec 9 17:39:38 2015 +0100| [5d865cb375c49227d3966858728908ad1d1044f8] | committer: Michael Niedermayer
avutil/mathematics: Fix division by 0
Fixes: CID1341571
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit bc8b1e694cc395fdf5e2917377ef11263c937d85)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=5d865cb375c49227d3966858728908ad1d1044f8
---
libavutil/mathematics.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavutil/mathematics.c b/libavutil/mathematics.c
index 4d8467b..78a87d8 100644
--- a/libavutil/mathematics.c
+++ b/libavutil/mathematics.c
@@ -90,7 +90,7 @@ int64_t av_rescale_rnd(int64_t a, int64_t b, int64_t c, enum AVRounding rnd)
else {
int64_t ad = a / c;
int64_t a2 = (a % c * b + r) / c;
- if (ad >= INT32_MAX && ad > (INT64_MAX - a2) / b)
+ if (ad >= INT32_MAX && b && ad > (INT64_MAX - a2) / b)
return INT64_MIN;
return ad * b + a2;
}
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