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| author | Luca Barbato <lu_zero@gentoo.org> | 2014-05-02 00:21:23 +0200 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2014-05-31 20:07:52 -0400 |
| commit | 7fa72700298107fe756311ecb4dee5270ff12d35 (patch) | |
| tree | 803164cf511f53b483a7c7bbcab5996fa3043b34 | |
| parent | 65c3593792a9702d9e4135bba46b1ca186afed6c (diff) | |
| download | ffmpeg-7fa72700298107fe756311ecb4dee5270ff12d35.tar.gz | |
swscale: Fix an undefined behaviour
Prevent a division by zero down the codepath.
Sample-Id: 00001721-google
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
| -rw-r--r-- | libswscale/utils.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libswscale/utils.c b/libswscale/utils.c index f3a501230f..b4a7485569 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -269,7 +269,7 @@ static int initFilter(int16_t **outFilter, int32_t **filterPos, int *outFilterSi xDstInSrc= xInc - 0x10000; for (i=0; i<dstW; i++) { - int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17); + int xx = (xDstInSrc - ((int64_t)(filterSize - 2) << 16)) / (1 << 17); int j; (*filterPos)[i]= xx; for (j=0; j<filterSize; j++) { |