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avcodec/mpc8: Fix 32bit mask/enum 

Fixes: left shift of 1 by 31 places cannot be represented in type 'int'
Fixes: 15817/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPC8_fuzzer-5636626409062400

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e8bb949ade)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-08-10 23:09:42 +02:00
parent ebc43bef1f
commit 4eef201e15
1 changed files with 1 additions and 1 deletions
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2
libavcodec/mpc8.c
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@ -62,7 +62,7 @@ static inline int mpc8_dec_enum(GetBitContext *gb, int k, int n)
do {
n--;
if (code >= C[n]) {
bits |= 1 << n;
bits |= 1U << n;
code -= C[n];
C -= 32;
k--;