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avformat/vividas: Fix invalid shift in decode_key() 

Fixes: left shift of 1 by 31 places cannot be represented in type 'int'
Fixes: 15118/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5740230004441088

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 2019-06-07 22:56:12 +02:00
parent 06a90cc783
commit 8c6c2747bc
1 changed files with 1 additions and 1 deletions
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libavformat/vividas.c
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@ -91,7 +91,7 @@ static uint32_t decode_key(uint8_t *buf)
for (int i = 0; i < 32; i++) { for (int i = 0; i < 32; i++) {
unsigned p = keybits[i]; unsigned p = keybits[i];
key |= !!(buf[p>>3] & (1<<(p&7))) << i; key |= (unsigned)!!(buf[p>>3] & (1<<(p&7))) << i;
} }
return key; return key;