1. ffmpeg
  2. Commit 24c504bd0a7cd20b5e48607c7fbf5c85dc1321ab
Browse code

avcodec/cabac_functions: Fix "left shift of negative value -31767"

Fixes: 1430e9c43fae47a24c179c7c54f94918/signal_sigsegv_421427_2340_591e9810c7b09efe501ad84638c9e9f8.264

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Found-by: xiedingbao (Ticket4727)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit a1f6b05f5228979dab0e149deca7a30d22e98af5)

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Michael Niedermayer authored on 2015/11/27 20:11:29
Showing 1 changed files
libavcodec/cabac_functions.h
History View file @ 24c504b
... ... 
@@ -74,7 +74,8 @@ static inline void renorm_cabac_decoder_once(CABACContext *c){
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 #ifndef get_cabac_inline
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 static void refill2(CABACContext *c){
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-    int i, x;
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+    int i;
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+    unsigned x;
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     x= c->low ^ (c->low-1);
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     i= 7 - ff_h264_norm_shift[x>>(CABAC_BITS-1)];