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avcodec/wavpack: Fix invalid shift

Fixes: runtime error: left shift of 1 by 31 places cannot be represented in type 'int'
Fixes: 2377/clusterfuzz-testcase-minimized-6108505935183872

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 c07af72098)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
tags/n3.0.9
Michael Niedermayer 8 years ago
parent
commit
2170bdb56d
1 changed files with 2 additions and 2 deletions
  1. +2
    -2
      libavcodec/wavpack.c

+ 2
- 2
libavcodec/wavpack.c View File

@@ -837,9 +837,9 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
continue;
}
bytestream2_get_buffer(&gb, val, 4);
if (val[0] > 31) {
if (val[0] > 30) {
av_log(avctx, AV_LOG_ERROR,
"Invalid INT32INFO, extra_bits = %d (> 32)\n", val[0]);
"Invalid INT32INFO, extra_bits = %d (> 30)\n", val[0]);
continue;
} else if (val[0]) {
s->extra_bits = val[0];


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