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-rw-r--r--Objects/stringobject.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index 99a16ed..e29be5a 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -824,9 +824,10 @@ string_richcompare(PyStringObject *a, PyStringObject *b, int op)
int min_len;
PyObject *result;
- /* One of the objects is a string object. Make sure the
- other one is one, too. */
- if (a->ob_type != b->ob_type) {
+ /* May sure both arguments use string comparison.
+ This implies PyString_Check(a) && PyString_Check(b). */
+ if (a->ob_type->tp_richcompare != (richcmpfunc)string_richcompare ||
+ b->ob_type->tp_richcompare != (richcmpfunc)string_richcompare) {
result = Py_NotImplemented;
goto out;
}