these builtins have to be initialized

Include/Python.h

@@ -113,6 +113,7 @@
 #include "import.h"
 
 #include "abstract.h"
+#include "bltinmodule.h"
 
 #include "compile.h"
 #include "eval.h"

Include/bltinmodule.h

+#ifndef Py_BLTINMODULE_H
+#define Py_BLTINMODULE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+PyAPI_DATA(PyTypeObject) PyFilter_Type;
+PyAPI_DATA(PyTypeObject) PyMap_Type;
+PyAPI_DATA(PyTypeObject) PyZip_Type;
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_BLTINMODULE_H */

Makefile.pre.in

@@ -612,6 +612,7 @@ PYTHON_HEADERS= \
 		Include/abstract.h \
 		Include/asdl.h \
 		Include/ast.h \
+                Include/bltinmodule.h \
 		Include/bitset.h \
 		Include/boolobject.h \
 		Include/bytes_methods.h \

Objects/object.c

@@ -1595,6 +1595,15 @@ _Py_ReadyTypes(void)
 
 	if (PyType_Ready(&PyMemberDescr_Type) < 0)
 		Py_FatalError("Can't initialize member descriptor type");
+
+	if (PyType_Ready(&PyFilter_Type) < 0)
+		Py_FatalError("Can't initialize filter type");
+
+	if (PyType_Ready(&PyMap_Type) < 0)
+		Py_FatalError("Can't initialize map type");
+
+	if (PyType_Ready(&PyZip_Type) < 0)
+		Py_FatalError("Can't initialize zip type");
 }
 
 

Python/bltinmodule.c

@@ -317,8 +317,6 @@ typedef struct {
 	PyObject *it;
 } filterobject;
 
-PyTypeObject PyFilter_Type;
-
 static PyObject *
 filter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
@@ -913,8 +911,6 @@ typedef struct {
 	PyObject *func;
 } mapobject;
 
-PyTypeObject PyMap_Type;
-
 static PyObject *
 map_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {
@@ -2031,8 +2027,6 @@ typedef struct {
 	PyObject *result;
 } zipobject;
 
-PyTypeObject PyZip_Type;
-
 static PyObject *
 zip_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 {