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-rw-r--r--Misc/NEWS11
1 files changed, 11 insertions, 0 deletions
diff --git a/Misc/NEWS b/Misc/NEWS
index b351711..b7b444a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -75,6 +75,17 @@ Build
C API
-----
+- PyType_Ready(): If a type declares that it participates in gc
+ (Py_TPFLAGS_HAVE_GC), and its base class does not, and its base class's
+ tp_free slot is the default _PyObject_Del, and type does not define
+ a tp_free slot itself, _PyObject_GC_Del is assigned to type->tp_free.
+ Previously _PyObject_Del was inherited, which could at best lead to a
+ segfault. In addition, if even after this magic the type's tp_free
+ slot is _PyObject_Del or NULL, and the type is a base type
+ (Py_TPFLAGS_BASETYPE), TypeError is raised: since the type is a base
+ type, its dealloc function must call type->tp_free, and since the type
+ is gc'able, tp_free must not be NULL or _PyObject_Del.
+
New platforms
-------------