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avcodec/flacdec: Fix undefined shift in decode_subframe()

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Fixes undefined behavior
Fixes: 639961-media

Found-by: Matt Wolenetz <wolenetz@google.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 1f5630af51)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-12-04 00:11:17 +01:00
parent 334901aea0
commit af1e19b9e4
1 changed files with 1 additions and 1 deletions
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2
libavcodec/flacdec.c
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@ -448,7 +448,7 @@ static inline int decode_subframe(FLACContext *s, int channel)
if (wasted) {
int i;
for (i = 0; i < s->blocksize; i++)
decoded[i] <<= wasted;
decoded[i] = (unsigned)decoded[i] << wasted;
}
return 0;