Archie Cobbs writes: > Tom Tromey wrote: > > At some point we changed libgcj's hash function to this: > > > > // This was chosen to yield relatively well distributed results on > > // both 32- and 64-bit architectures. Note 0x7fffffff is prime. > > return (jint) ((unsigned long) obj % 0x7fffffff); > > What if you're on a 32-bit machine and all the object addresses > are less than 0x80000000.. won't that give you the same result > as just returning (jint)obj ? Yes, it will. It only really helps on 64-bit machines. Andrew.
