fix strange errors when setting attributes on tracebacks #4034
diff --git a/Objects/frameobject.c b/Objects/frameobject.c
index 1ea586f..c8cf71b 100644
--- a/Objects/frameobject.c
+++ b/Objects/frameobject.c
@@ -604,7 +604,17 @@
int _PyFrame_Init()
{
builtin_object = PyString_InternFromString("__builtins__");
- return (builtin_object != NULL);
+ if (builtin_object == NULL)
+ return 0;
+ /*
+ Traceback objects are not created the normal way (through calling the
+ type), so PyType_Ready has to be called here.
+ */
+ if (PyType_Ready(&PyTraceBack_Type)) {
+ Py_DECREF(builtin_object);
+ return 0;
+ }
+ return 1;
}
PyFrameObject *