avutil/mathematics: Fix division by 0

Fixes: CID1341571 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago · bc8b1e694c
parent 8cfa912e25
commit bc8b1e694c
1 changed files with 1 additions and 1 deletions
--- a/libavutil/mathematics.c
+++ b/libavutil/mathematics.c
@ -85,7 +85,7 @@ 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;
        }