avcodec/dcadsp: Fix runtime error: signed integer overflow

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
8 years ago · 9244b839b7
parent 45eeb1f785
commit 9244b839b7
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/dcadsp.c
+++ b/libavcodec/dcadsp.c
@ -320,7 +320,7 @@ static void dmix_sub_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t le
    int i;

    for (i = 0; i < len; i++)
-        dst[i] -= mul15(src[i], coeff);
+        dst[i] -= (unsigned)mul15(src[i], coeff);
 }

 static void dmix_add_c(int32_t *dst, const int32_t *src, int coeff, ptrdiff_t len)