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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-19 14:08:58 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-22 03:07:21 +0200 |
| commit | 4afd24805954502d771e39107df245620c7e84af (patch) | |
| tree | 67891c02a0dc8c40ba36732d736c21ea85fb94ba | |
| parent | cbc4f40d137279eac5cea66f21fc99d1d87ccc37 (diff) | |
| download | ffmpeg-4afd24805954502d771e39107df245620c7e84af.tar.gz | |
avcodec/wavpack: Fix undefined integer negation
Fixes: runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself
Fixes: 2291/clusterfuzz-testcase-minimized-5538453481586688
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 5f89747086af741ddc34e2378cde8519b8faee78)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/wavpack.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index ec8a9d9bb3..7a87aa36f0 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -307,8 +307,8 @@ static float wv_get_value_float(WavpackFrameContext *s, uint32_t *crc, int S) S <<= s->float_shift; sign = S < 0; if (sign) - S = -S; - if (S >= 0x1000000) { + S = -(unsigned)S; + if (S >= 0x1000000U) { if (s->got_extra_bits && get_bits1(&s->gb_extra_bits)) S = get_bits(&s->gb_extra_bits, 23); else |