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avcodec/g726: Fix runtime error: left shift of negative value -2 

Fixes: 1393/clusterfuzz-testcase-minimized-5948366791901184

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 2017-05-07 15:40:07 +02:00
parent fbc304239f
commit c04aa14882
1 changed files with 1 additions and 1 deletions
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2
libavcodec/g726.c
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@ -269,7 +269,7 @@ static int16_t g726_decode(G726Context* c, int I)
c->se += mult(i2f(c->a[i] >> 2, &f), &c->sr[i]); c->se += mult(i2f(c->a[i] >> 2, &f), &c->sr[i]);
c->se >>= 1; c->se >>= 1;
return av_clip(re_signal << 2, -0xffff, 0xffff); return av_clip(re_signal * 4, -0xffff, 0xffff);
} }
static av_cold int g726_reset(G726Context *c) static av_cold int g726_reset(G726Context *c)