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avcodec/lagarith: Fix runtime error: left shift of 1 by 31 places cannot be represented in type 'int'

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Fixes: 1764/clusterfuzz-testcase-minimized-5394243164045312

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-05-23 14:34:00 +02:00
parent 620b452a11
commit 948b54763b
1 changed files with 1 additions and 1 deletions
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2
libavcodec/lagarith.c
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@ -91,7 +91,7 @@ static uint32_t softfloat_mul(uint32_t x, uint64_t mantissa)
uint64_t h = x * (mantissa >> 32);
h += l >> 32;
l &= 0xffffffff;
l += 1 << av_log2(h >> 21);
l += 1LL << av_log2(h >> 21);
h += l >> 32;
return h >> 20;
}