From 6ecf1eb0ddad4732fa90cbec1b13d9f3d2efa940 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 16 Aug 2012 01:35:10 +0200 Subject: [PATCH] snowdec: add 2 av_asserts to check run validity Signed-off-by: Michael Niedermayer --- libavcodec/snow.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavcodec/snow.h b/libavcodec/snow.h index 30e6a9a485..6d6b086907 100644 --- a/libavcodec/snow.h +++ b/libavcodec/snow.h @@ -664,11 +664,13 @@ static inline void unpack_coeffs(SnowContext *s, SubBand *b, SubBand * parent, i int max_run; run--; v=0; - + av_assert2(run >= 0); if(y) max_run= FFMIN(run, prev_xc->x - x - 2); else max_run= FFMIN(run, w-x-1); if(parent_xc) max_run= FFMIN(max_run, 2*parent_xc->x - x - 1); + av_assert2(max_run >= 0 && max_run <= run); + x+= max_run; run-= max_run; }