From 35f3df0d76e28969fa77f2b865e2e40b3ba69722 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sat, 6 May 2017 00:13:05 +0200 Subject: [PATCH] avutil/softfloat: Fix multiple runtime error: left shift of negative value -8 Fixes: 1352/clusterfuzz-testcase-minimized-5757565017260032 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavutil/softfloat.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavutil/softfloat.h b/libavutil/softfloat.h index e6d30ad333..5d376e438a 100644 --- a/libavutil/softfloat.h +++ b/libavutil/softfloat.h @@ -234,12 +234,12 @@ static av_unused void av_sincos_sf(int a, int *s, int *c) int st, ct; idx = a >> 26; - sign = (idx << 27) >> 31; + sign = (int32_t)((unsigned)idx << 27) >> 31; cv = av_costbl_1_sf[idx & 0xf]; cv = (cv ^ sign) - sign; idx -= 8; - sign = (idx << 27) >> 31; + sign = (int32_t)((unsigned)idx << 27) >> 31; sv = av_costbl_1_sf[idx & 0xf]; sv = (sv ^ sign) - sign;