Inform the cycle-detector that the a weakref object no longer needs to be

tracked as soon as it is clear; this can decrease the number of roots for
the cycle detector sooner rather than later in applications which hold on
to weak references beyond the time of the invalidation.

1 files changed, 1 insertions, 1 deletions

diff --git a/Modules/_weakref.c b/Modules/_weakref.c
index 399b4fe67b..5bdab4dbc0 100644
--- a/Modules/_weakref.c
+++ b/Modules/_weakref.c
@@ -59,6 +59,7 @@ clear_weakref(PyWeakReference *self)
     if (self->wr_object != Py_None) {
         PyWeakReference **list = GET_WEAKREFS_LISTPTR(self->wr_object);
 
+        PyObject_GC_Fini((PyObject *)self);
         if (*list == self)
             *list = self->wr_next;
         self->wr_object = Py_None;
@@ -78,7 +79,6 @@ static void
 weakref_dealloc(PyWeakReference *self)
 {
     clear_weakref(self);
-    PyObject_GC_Fini((PyObject *)self);
     self->wr_next = free_list;
     free_list = self;
 }