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dec/vp8l: prevent signed int overflow in left shift ops

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force unsigned when shifting by 24.

Change-Id: I6f9ca5fa2109e59b1d46a909136384fc6dc8ca0b
This commit is contained in:
James Zern 2014-04-29 19:54:56 +00:00
parent 38e2db3e16
commit e69a1df4b7
1 changed files with 1 additions and 1 deletions
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src/dec/vp8l.c
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@ -851,7 +851,7 @@ static int DecodeImageData(VP8LDecoder* const dec, uint32_t* const data,
VP8LFillBitWindow(br); VP8LFillBitWindow(br);
blue = ReadSymbol(&htree_group->htrees_[BLUE], br); blue = ReadSymbol(&htree_group->htrees_[BLUE], br);
alpha = ReadSymbol(&htree_group->htrees_[ALPHA], br); alpha = ReadSymbol(&htree_group->htrees_[ALPHA], br);
*src = (alpha << 24) | (red << 16) | (green << 8) | blue; *src = ((uint32_t)alpha << 24) | (red << 16) | (green << 8) | blue;
AdvanceByOne: AdvanceByOne:
++src; ++src;
++col; ++col;