diff options
Diffstat (limited to 'Objects/object.c')
| -rw-r--r-- | Objects/object.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Objects/object.c b/Objects/object.c index 40c939a..a4c9f08 100644 --- a/Objects/object.c +++ b/Objects/object.c @@ -100,6 +100,10 @@ PyObject_Init(PyObject *op, PyTypeObject *tp) /* Any changes should be reflected in PyObject_INIT (objimpl.h) */ op->ob_type = tp; _Py_NewReference(op); + if (PyType_SUPPORTS_WEAKREFS(tp)) { + PyObject **weaklist = PyObject_GET_WEAKREFS_LISTPTR(op); + *weaklist = NULL; + } return op; } @@ -119,6 +123,10 @@ PyObject_InitVar(PyVarObject *op, PyTypeObject *tp, int size) op->ob_size = size; op->ob_type = tp; _Py_NewReference((PyObject *)op); + if (PyType_SUPPORTS_WEAKREFS(tp)) { + PyObject **weaklist = PyObject_GET_WEAKREFS_LISTPTR(op); + *weaklist = NULL; + } return op; } @@ -1458,6 +1466,21 @@ PyObject_Free(void *p) } +/* Hook to clear up weak references only once the _weakref module is + imported. We use a dummy implementation to simplify the code at each + call site instead of requiring a test for NULL. +*/ + +static int +empty_clear_weak_refs(PyObject *o) +{ + return 1; +} + +int (*PyObject_ClearWeakRefs)(PyObject *) = empty_clear_weak_refs; + + + /* These methods are used to control infinite recursion in repr, str, print, etc. Container objects that may recursively contain themselves, e.g. builtin dictionaries and lists, should used Py_ReprEnter() and |