Comparison of two class instances without __cmp__ or __rcmp__ methods
was broken.
diff --git a/Objects/classobject.c b/Objects/classobject.c
index 923ad45..a395801 100644
--- a/Objects/classobject.c
+++ b/Objects/classobject.c
@@ -523,8 +523,11 @@
object *result;
int outcome;
result = instancebinop(inst, other, "__cmp__", "__rcmp__");
- if (result == NULL)
- return -2;
+ if (result == NULL) {
+ /* no __cmp__ or __rcmp__ methods, so use addresses */
+ err_clear();
+ return inst < other ? -1 : (inst > other ? 1 : 0);
+ }
outcome = getintvalue(result);
DECREF(result);
if (outcome == -1 && err_occurred())