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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-04 14:02:51 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-06 04:44:35 +0300 |
| commit | aae731b9d39f18ee7d42e632a0139187435c35b6 (patch) | |
| tree | 4b263097ac9995aaa9d765944a8950875ec4d261 | |
| parent | 4e6de49a5a4a9269db88825ca06f24a2e522add5 (diff) | |
avcodec/ac3dec_fixed: Fix runtime error: left shift of 419 by 23 places cannot be represented in type 'int'
Fixes: 1352/clusterfuzz-testcase-minimized-5757565017260032
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 136ce8baa4fc16cf38690cb457f7356c00e00a28)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/ac3dec_fixed.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ac3dec_fixed.c b/libavcodec/ac3dec_fixed.c index 682fe935b0..5a868e4abf 100644 --- a/libavcodec/ac3dec_fixed.c +++ b/libavcodec/ac3dec_fixed.c @@ -69,7 +69,7 @@ static void scale_coefs ( int temp, temp1, temp2, temp3, temp4, temp5, temp6, temp7; mul = (dynrng & 0x1f) + 0x20; - shift = 4 - ((dynrng << 23) >> 28); + shift = 4 - (sign_extend(dynrng, 9) >> 5); if (shift > 0 ) { round = 1 << (shift-1); for (i=0; i<len; i+=8) { |