Fix a crasher where Python code managed to infinitely recurse in C code without

ever going back out to Python code in PyObject_Call().  Required introducing a
static RuntimeError instance so that normalizing an exception there is no
reliance on a recursive call that would put the exception system over the
recursion check itself.

1 files changed, 0 insertions, 9 deletions

diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 49b877d..59dec4a 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -4854,16 +4854,7 @@ slot_tp_call(PyObject *self, PyObject *args, PyObject *kwds)
 	if (meth == NULL)
 		return NULL;
 
-	/* PyObject_Call() will end up calling slot_tp_call() again if
-	   the object returned for __call__ has __call__ itself defined
-	   upon it.  This can be an infinite recursion if you set
-	   __call__ in a class to an instance of it. */
-	if (Py_EnterRecursiveCall(" in __call__")) {
-		Py_DECREF(meth);
-		return NULL;
-	}
 	res = PyObject_Call(meth, args, kwds);
-	Py_LeaveRecursiveCall();
 
 	Py_DECREF(meth);
 	return res;