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avcodec/aacdec_fixed: Fix runtime error: left shift of negative value -1297616

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Fixes: 2195/clusterfuzz-testcase-minimized-4736721533009920

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 2017-06-11 14:32:35 +02:00
parent 9a949cdf8f
commit 6d499ecef9
1 changed files with 1 additions and 1 deletions
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2
libavcodec/aacdec_fixed.c
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@ -389,7 +389,7 @@ static void apply_dependent_coupling_fixed(AACContext *ac,
for (k = offsets[i]; k < offsets[i + 1]; k++) {
tmp = (int)(((int64_t)src[group * 128 + k] * c + \
(int64_t)0x1000000000) >> 37);
dest[group * 128 + k] += tmp << shift;
dest[group * 128 + k] += tmp * (1 << shift);
}
}
}