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| author | Luca Barbato <lu_zero@gentoo.org> | 2014-05-02 00:21:23 +0200 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2014-05-03 18:25:17 +0200 |
| commit | 3a177a9cca924e097265b32f9282814f6b653e08 (patch) | |
| tree | c764e353dcdf587cbf9e24f55052777aa316864f | |
| parent | 925c37874b617816b6f460c6f229c18b46548b46 (diff) | |
| download | ffmpeg-3a177a9cca924e097265b32f9282814f6b653e08.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 6af41f8b30..fa00668c8e 100644 --- a/libswscale/utils.c +++ b/libswscale/utils.c @@ -331,7 +331,7 @@ static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos, 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++) { |