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avcodec/bmp: Fix runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself 

There is code checking height and width later, leaving an invalid value invalid
is thus fine.

Fixes: 635/clusterfuzz-testcase-6225161437052928
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-02-21 16:22:47 +01:00
parent 4ec07e9431
commit 0c42d0add3
1 changed files with 1 additions and 1 deletions
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libavcodec/bmp.c
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@ -133,7 +133,7 @@ static int bmp_decode_frame(AVCodecContext *avctx,
}
avctx->width = width;
avctx->height = height > 0 ? height : -height;
avctx->height = height > 0 ? height : -(unsigned)height;
avctx->pix_fmt = AV_PIX_FMT_NONE;