shithub: libvpx

Download patch

ref: 6aa2163b6975872cab3f326218cfadf01ee2a78c
parent: 42b7c44b2fa40ff8b070809e79f9931526f5fe52
author: Alex Converse <aconverse@google.com>
date: Thu Nov 19 10:07:55 EST 2015 

bitreader/writer: Change shift to signed

Silences several legal but suspicious unsigned overflows found with
clang -fsanitize=integer.

Change-Id: I69399751492a183167932b0a10751c433c32ca7b


--- a/vpx_dsp/bitreader.h
+++ b/vpx_dsp/bitreader.h
@@ -98,7 +98,7 @@
   }
 
   {
-    register unsigned int shift = vpx_norm[range];
+    register int shift = vpx_norm[range];
     range <<= shift;
     value <<= shift;
     count -= shift;
--- a/vpx_dsp/bitwriter.h
+++ b/vpx_dsp/bitwriter.h
@@ -35,7 +35,7 @@
   int count = br->count;
   unsigned int range = br->range;
   unsigned int lowvalue = br->lowvalue;
-  register unsigned int shift;
+  register int shift;
 
   split = 1 + (((range - 1) * probability) >> 8);
 
-- 
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