ExternalVendorCode/corda
1
0
Fork 0
mirror of https://github.com/corda/corda.git synced 2025-01-22 12:28:11 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

return only non-negative values from takeHash

Browse Source 
Some broken code implicitly relies on System.identityHashCode always
returning a non-negative number (e.g. old versions of
com/sun/xml/bind/v2/util/CollisionCheckStack.hash).
This commit is contained in:
Joel Dice 2011-03-27 20:22:59 -06:00
parent c75cf7ebb6
commit 62e10cf992
1 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/machine.h
View File

@ -2260,7 +2260,11 @@ markHashTaken(Thread* t, object o)
inline uint32_t inline uint32_t
takeHash(Thread*, object o) takeHash(Thread*, object o)
{ {
return reinterpret_cast<uintptr_t>(o) / BytesPerWord; // some broken code implicitly relies on System.identityHashCode
// always returning a non-negative number (e.g. old versions of
// com/sun/xml/bind/v2/util/CollisionCheckStack.hash), hence the "&
// 0x7FFFFFFF":
return (reinterpret_cast<uintptr_t>(o) / BytesPerWord) & 0x7FFFFFFF;
} }
inline uint32_t inline uint32_t