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avcodec/ra144: Fix runtime error: left shift of negative value -798

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Fixes: 1388/clusterfuzz-testcase-minimized-6680800936329216

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 78bf446852)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2017-05-07 14:16:33 +02:00
parent 6856a8f0ad
commit c9cdea2a24
1 changed files with 1 additions and 1 deletions
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libavcodec/ra144.c
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@@ -1598,7 +1598,7 @@ void ff_eval_coefs(int *coefs, const int *refl)
int i, j;
for (i=0; i < LPC_ORDER; i++) {
b1[i] = refl[i] << 4;
b1[i] = refl[i] * 16;
for (j=0; j < i; j++)
b1[j] = ((refl[i] * b2[i-j-1]) >> 12) + b2[j];