From 5f89747086af741ddc34e2378cde8519b8faee78 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Mon, 19 Jun 2017 14:08:58 +0200 Subject: 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 --- libavcodec/wavpack.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'libavcodec/wavpack.c') diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c index 6e601f02fa..ac43c13da5 100644 --- a/libavcodec/wavpack.c +++ b/libavcodec/wavpack.c @@ -313,8 +313,8 @@ static float wv_get_value_float(WavpackFrameContext *s, uint32_t *crc, int S) S *= 1U << 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 -- cgit v1.2.3