diff options
| -rw-r--r-- | Objects/weakrefobject.c | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/Objects/weakrefobject.c b/Objects/weakrefobject.c index df74be6..6264b18 100644 --- a/Objects/weakrefobject.c +++ b/Objects/weakrefobject.c @@ -801,24 +801,14 @@ PyWeakref_NewRef(PyObject *ob, PyObject *callback) if (result != NULL) Py_INCREF(result); else { - /* Note: new_weakref() can trigger cyclic GC, so the weakref - list on ob can be mutated. This means that the ref and - proxy pointers we got back earlier may have been collected, - so we need to compute these values again before we use - them. */ + /* We do not need to recompute ref/proxy; new_weakref() cannot + trigger GC. + */ result = new_weakref(ob, callback); if (result != NULL) { - get_basic_refs(*list, &ref, &proxy); if (callback == NULL) { - if (ref == NULL) - insert_head(result, list); - else { - /* Someone else added a ref without a callback - during GC. Return that one instead of this one - to avoid violating the invariants of the list - of weakrefs for ob. */ - Py_SETREF(result, (PyWeakReference*)Py_NewRef(ref)); - } + assert(ref == NULL); + insert_head(result, list); } else { PyWeakReference *prev; |