shithub: libvpx

Download patch

ref: 95d2dc8981f1ec2da22784c011e1d11e726601e5
parent: 06c6e4cbf6e42db1de8589eadd1566c1ef36aed8
author: James Zern <jzern@google.com>
date: Wed Jun 8 13:33:34 EDT 2016 

fdct8x8_test: fix unsigned overflow

the difference between src and dst will be signed, the error will be
unsigned.
quiets -fsanitize=integer:
unsigned integer overflow: 4294967295 * 4294967295

Change-Id: I580813093ee46284fde7954520dfcb1188f79268


--- a/test/fdct8x8_test.cc
+++ b/test/fdct8x8_test.cc
@@ -425,10 +425,10 @@
 
       for (int j = 0; j < kNumCoeffs; ++j) {
 #if CONFIG_VP9_HIGHBITDEPTH
-        const uint32_t diff =
+        const int diff =
             bit_depth_ == VPX_BITS_8 ? dst[j] - src[j] : dst16[j] - src16[j];
 #else
-        const uint32_t diff = dst[j] - src[j];
+        const int diff = dst[j] - src[j];
 #endif
         const uint32_t error = diff * diff;
         EXPECT_GE(1u << 2 * (bit_depth_ - 8), error)
@@ -511,10 +511,10 @@
 
       for (int j = 0; j < kNumCoeffs; ++j) {
 #if CONFIG_VP9_HIGHBITDEPTH
-        const uint32_t diff =
+        const int diff =
             bit_depth_ == VPX_BITS_8 ? dst[j] - ref[j] : dst16[j] - ref16[j];
 #else
-        const uint32_t diff = dst[j] - ref[j];
+        const int diff = dst[j] - ref[j];
 #endif
         const uint32_t error = diff * diff;
         EXPECT_EQ(0u, error)