[Python-checkins] cpython (merge 3.4 -> default): Issue #22079: PyType_Ready() now checks that statically allocated type has
serhiy.storchaka
python-checkins at python.org
Wed Jan 28 10:10:28 CET 2015
https://hg.python.org/cpython/rev/eb26255e11f1
changeset: 94350:eb26255e11f1
parent: 94347:1df1fde8f360
parent: 94349:747855f29b9d
user: Serhiy Storchaka <storchaka at gmail.com>
date: Wed Jan 28 11:06:04 2015 +0200
summary:
Issue #22079: PyType_Ready() now checks that statically allocated type has
no dynamically allocated bases.
files:
Misc/NEWS | 3 +++
Objects/typeobject.c | 14 ++++++++++++++
2 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -1519,6 +1519,9 @@
C API
-----
+- Issue #22079: PyType_Ready() now checks that statically allocated type has
+ no dynamically allocated bases.
+
- Issue #22453: Removed non-documented macro PyObject_REPR().
- Issue #18395: Rename ``_Py_char2wchar()`` to :c:func:`Py_DecodeLocale`,
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -4683,6 +4683,20 @@
inherit_slots(type, (PyTypeObject *)b);
}
+ /* All bases of statically allocated type should be statically allocated */
+ if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE))
+ for (i = 0; i < n; i++) {
+ PyObject *b = PyTuple_GET_ITEM(bases, i);
+ if (PyType_Check(b) &&
+ (((PyTypeObject *)b)->tp_flags & Py_TPFLAGS_HEAPTYPE)) {
+ PyErr_Format(PyExc_TypeError,
+ "type '%.100s' is not dynamically allocated but "
+ "its base type '%.100s' is dynamically allocated",
+ type->tp_name, ((PyTypeObject *)b)->tp_name);
+ goto error;
+ }
+ }
+
/* Sanity check for tp_free. */
if (PyType_IS_GC(type) && (type->tp_flags & Py_TPFLAGS_BASETYPE) &&
(type->tp_free == NULL || type->tp_free == PyObject_Del)) {
--
Repository URL: https://hg.python.org/cpython
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