From 3b63819dfbeefe8656c816e2dcdba548ff6dfb35 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Sun, 15 Mar 2015 02:57:24 +0100 Subject: [PATCH] avcodec/vc1: Fix undefined shifts Found-by: Clang -fsanitize=shift Reported-by: Thierry Foucu Signed-off-by: Michael Niedermayer --- libavcodec/vc1.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c index 22eb358dae..a84522c130 100644 --- a/libavcodec/vc1.c +++ b/libavcodec/vc1.c @@ -572,13 +572,13 @@ int ff_vc1_decode_entry_point(AVCodecContext *avctx, VC1Context *v, GetBitContex int scale, shift, i; \ if (!lumscale) { \ scale = -64; \ - shift = (255 - lumshift * 2) << 6; \ + shift = (255 - lumshift * 2) * 64; \ if (lumshift > 31) \ shift += 128 << 6; \ } else { \ scale = lumscale + 32; \ if (lumshift > 31) \ - shift = (lumshift - 64) << 6; \ + shift = (lumshift - 64) * 64; \ else \ shift = lumshift << 6; \ } \