Title: [128657] trunk/Source/WTF
- Revision
- 128657
- Author
- [email protected]
- Date
- 2012-09-14 14:57:26 -0700 (Fri, 14 Sep 2012)
Log Message
Minimize collisions when hashing pairs
https://bugs.webkit.org/show_bug.cgi?id=96022
Build fix (with newer clang?)
* wtf/HashFunctions.h: (WTF::pairIntHash): Be explicit about casting from
64 bit to 32 bit.
Modified Paths
Diff
Modified: trunk/Source/WTF/ChangeLog (128656 => 128657)
--- trunk/Source/WTF/ChangeLog 2012-09-14 21:52:22 UTC (rev 128656)
+++ trunk/Source/WTF/ChangeLog 2012-09-14 21:57:26 UTC (rev 128657)
@@ -1,3 +1,13 @@
+2012-09-14 Alexey Proskuryakov <[email protected]>
+
+ Minimize collisions when hashing pairs
+ https://bugs.webkit.org/show_bug.cgi?id=96022
+
+ Build fix (with newer clang?)
+
+ * wtf/HashFunctions.h: (WTF::pairIntHash): Be explicit about casting from
+ 64 bit to 32 bit.
+
2012-09-14 Dana Jansens <[email protected]>
Minimize collisions when hashing pairs
Modified: trunk/Source/WTF/wtf/HashFunctions.h (128656 => 128657)
--- trunk/Source/WTF/wtf/HashFunctions.h 2012-09-14 21:52:22 UTC (rev 128656)
+++ trunk/Source/WTF/wtf/HashFunctions.h 2012-09-14 21:57:26 UTC (rev 128657)
@@ -94,7 +94,7 @@
uint64_t longRandom = 19248658165952622LL; // A random 64-bit value.
uint64_t product = longRandom * (shortRandom1 * key1 + shortRandom2 * key2);
- unsigned highBits = product >> (sizeof(uint64_t) - sizeof(unsigned));
+ unsigned highBits = static_cast<unsigned>(product >> (sizeof(uint64_t) - sizeof(unsigned)));
return highBits;
}
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