From 1932f7e2eee07e4a50e014a625dca79a9f9dba7a Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Wed, 11 Mar 2015 04:24:57 +0100 Subject: [PATCH] avcodec/mpeg12dec: Fix undefined shift Found-by: Clang -fsanitize=shift Reported-by: Thierry Foucu Signed-off-by: Michael Niedermayer --- libavcodec/mpeg12dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c index f7e57f934d..a5622bf19e 100644 --- a/libavcodec/mpeg12dec.c +++ b/libavcodec/mpeg12dec.c @@ -957,7 +957,7 @@ static int mpeg_decode_mb(MpegEncContext *s, int16_t block[12][64]) av_dlog(s->avctx, "fmx=%d\n", val); val = mpeg_decode_motion(s, s->mpeg_f_code[i][1], s->last_mv[i][j][1] >> 1); - s->last_mv[i][j][1] = val << 1; + s->last_mv[i][j][1] = 2 * val; s->mv[i][j][1] = val; av_dlog(s->avctx, "fmy=%d\n", val); }