Remove the Py_TPFLAGS_HAVE_GC from the _ctypes.COMError type.
Fixes issue #4433; reviewed by Benjamin Peterson.
diff --git a/Misc/NEWS b/Misc/NEWS
index 6145654..0ff809c 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,9 @@
Library
-------
+- Issue #4433: Fixed an access violation when garbage collecting
+ _ctypes.COMError instances.
+
- Issue #4429: Fixed UnicodeDecodeError in ctypes.
- Issue #4373: Corrected a potential reference leak in the pickle module and
diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index 11a725d..a003a6c 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -5097,8 +5097,7 @@
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
- Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE
- | Py_TPFLAGS_HAVE_GC, /* tp_flags */
+ Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
PyDoc_STR(comerror_doc), /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */