From 2ccd2c9003c77aee8ffb5f4f43863e35bdf0e4b6 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 19 May 2017 12:14:59 +0200 Subject: avcodec/aacsbr_fixed: Fix multiple runtime error: left shift of negative value -407 Fixes: 1674/clusterfuzz-testcase-minimized-6092531563495424 Fixes: 1686/clusterfuzz-testcase-minimized-6282691643179008 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer --- libavcodec/sbrdsp_fixed.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'libavcodec/sbrdsp_fixed.c') diff --git a/libavcodec/sbrdsp_fixed.c b/libavcodec/sbrdsp_fixed.c index fb9aba4e8d..a018b4dd82 100644 --- a/libavcodec/sbrdsp_fixed.c +++ b/libavcodec/sbrdsp_fixed.c @@ -116,7 +116,7 @@ static av_always_inline SoftFloat autocorr_calc(int64_t accu) } else { nz = 0; while (FFABS(i) < 0x40000000) { - i <<= 1; + i *= 2; nz++; } nz = 32-nz; @@ -125,7 +125,7 @@ static av_always_inline SoftFloat autocorr_calc(int64_t accu) round = 1U << (nz-1); mant = (int)((accu + round) >> nz); mant = (mant + 0x40)>>7; - mant <<= 6; + mant *= 64; expo = nz + 15; return av_int2sf(mant, 30 - expo); } -- cgit v1.2.3