Issue python#19183: too many tests depend on the sort order of repr().

tiran · tiran · commit a5bcd7c0ee65 · 2013-11-20T12:49:05.000+01:00
The bitshift and xor op for 32bit builds has changed the order of hash values.
diff --git a/Python/pyhash.c b/Python/pyhash.c
@@ -415,9 +415,6 @@ siphash24(const void *src, Py_ssize_t src_sz) {
 
     /* modified */
     t = (v0 ^ v1) ^ (v2 ^ v3);
-#if SIZEOF_VOID_P == 4
-    t ^= (t >> 32);
-#endif
     return (Py_hash_t)t;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -415,9 +415,6 @@ siphash24(const void *src, Py_ssize_t src_sz) {`
`415`	`415`
`416`	`416`	`/* modified */`
`417`	`417`	`t = (v0 ^ v1) ^ (v2 ^ v3);`
`418`		`-#if SIZEOF_VOID_P == 4`
`419`		`- t ^= (t >> 32);`
`420`		`-#endif`
`421`	`418`	`return (Py_hash_t)t;`
`422`	`419`	`}`
`423`	`420`