avcodec/cabac_functions: Fix "left shift of negative value -31767"
authorMichael Niedermayer <michael@niedermayer.cc>
Fri, 27 Nov 2015 11:11:29 +0000 (12:11 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Fri, 27 Nov 2015 13:03:01 +0000 (14:03 +0100)
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>
libavcodec/cabac_functions.h

index 15dba29..4e13253 100644 (file)
@@ -74,7 +74,8 @@ static inline void renorm_cabac_decoder_once(CABACContext *c){
 
 #ifndef get_cabac_inline
 static void refill2(CABACContext *c){
-    int i, x;
+    int i;
+    unsigned x;
 
     x= c->low ^ (c->low-1);
     i= 7 - ff_h264_norm_shift[x>>(CABAC_BITS-1)];