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avformat/wsddec: Fix undefined shift

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Fixes: left shift of 1 by 31 places cannot be represented in type 'int'
Fixes: 15123/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5738039235575808

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 112eb17a2bbf6d02f81fdf0743b353a6b010aedc)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-06-08 09:27:49 +02:00
parent 666aec9b33
commit afd6f1a6de
1 changed files with 1 additions and 1 deletions
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2
libavformat/wsddec.c
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@ -137,7 +137,7 @@ static int wsd_read_header(AVFormatContext *s)
if (!(channel_assign & 1)) {
int i;
for (i = 1; i < 32; i++)
if (channel_assign & (1 << i))
if ((channel_assign >> i) & 1)
st->codecpar->channel_layout |= wsd_to_av_channel_layoyt(s, i);
}