diff -up Python-2.7rc1/Modules/_ctypes/callbacks.c.selinux Python-2.7rc1/Modules/_ctypes/callbacks.c

--- Python-2.7rc1/Modules/_ctypes/callbacks.c.selinux	2010-05-09 10:46:46.000000000 -0400

+++ Python-2.7rc1/Modules/_ctypes/callbacks.c	2010-06-08 08:44:18.357366200 -0400

@@ -21,8 +21,8 @@ CThunkObject_dealloc(PyObject *_self)

     Py_XDECREF(self->converters);

     Py_XDECREF(self->callable);

     Py_XDECREF(self->restype);

-    if (self->pcl)

-        _ctypes_free_closure(self->pcl);

+    if (self->pcl_write)

+        ffi_closure_free(self->pcl_write);

     PyObject_GC_Del(self);

 }

@@ -391,7 +391,8 @@ static CThunkObject* CThunkObject_new(Py

         return NULL;

     }

-    p->pcl = NULL;

+    p->pcl_exec = NULL;

+    p->pcl_write = NULL;

     memset(&p->cif, 0, sizeof(p->cif));

     p->converters = NULL;

     p->callable = NULL;

@@ -421,8 +422,9 @@ CThunkObject *_ctypes_alloc_callback(PyO

     assert(CThunk_CheckExact(p));

-    p->pcl = _ctypes_alloc_closure();

-    if (p->pcl == NULL) {

+    p->pcl_write = ffi_closure_alloc(sizeof(ffi_closure),

+                                     &p->pcl_exec);

+    if (p->pcl_write == NULL) {

         PyErr_NoMemory();

         goto error;

     }

@@ -467,7 +469,9 @@ CThunkObject *_ctypes_alloc_callback(PyO

                      "ffi_prep_cif failed with %d", result);

         goto error;

     }

-    result = ffi_prep_closure(p->pcl, &p->cif, closure_fcn, p);

+    result = ffi_prep_closure_loc(p->pcl_write, &p->cif, closure_fcn,

+                                  p,

+                                  p->pcl_exec);

     if (result != FFI_OK) {

         PyErr_Format(PyExc_RuntimeError,

                      "ffi_prep_closure failed with %d", result);

diff -up Python-2.7rc1/Modules/_ctypes/_ctypes.c.selinux Python-2.7rc1/Modules/_ctypes/_ctypes.c

--- Python-2.7rc1/Modules/_ctypes/_ctypes.c.selinux	2010-05-09 10:46:46.000000000 -0400

+++ Python-2.7rc1/Modules/_ctypes/_ctypes.c	2010-06-07 23:19:39.950146038 -0400

@@ -3463,7 +3463,7 @@ PyCFuncPtr_new(PyTypeObject *type, PyObj

     self->callable = callable;

     self->thunk = thunk;

-    *(void **)self->b_ptr = (void *)thunk->pcl;

+    *(void **)self->b_ptr = (void *)thunk->pcl_exec;

     Py_INCREF((PyObject *)thunk); /* for KeepRef */

     if (-1 == KeepRef((CDataObject *)self, 0, (PyObject *)thunk)) {

diff -up Python-2.7rc1/Modules/_ctypes/ctypes.h.selinux Python-2.7rc1/Modules/_ctypes/ctypes.h

--- Python-2.7rc1/Modules/_ctypes/ctypes.h.selinux	2010-05-09 10:46:46.000000000 -0400

+++ Python-2.7rc1/Modules/_ctypes/ctypes.h	2010-06-07 23:19:39.950146038 -0400

@@ -95,7 +95,8 @@ struct tagCDataObject {

 typedef struct {

     PyObject_VAR_HEAD

-    ffi_closure *pcl; /* the C callable */

+    ffi_closure *pcl_write; /* the C callable, writeable */

+    void *pcl_exec;         /* the C callable, executable */

     ffi_cif cif;

     int flags;

     PyObject *converters;

diff -up Python-2.7rc1/setup.py.selinux Python-2.7rc1/setup.py

--- Python-2.7rc1/setup.py.selinux	2010-06-07 23:19:39.922147795 -0400

+++ Python-2.7rc1/setup.py	2010-06-07 23:19:39.951145942 -0400

@@ -1864,8 +1864,7 @@ class PyBuildExt(build_ext):

                    '_ctypes/callbacks.c',

                    '_ctypes/callproc.c',

                    '_ctypes/stgdict.c',

-                   '_ctypes/cfield.c',

-                   '_ctypes/malloc_closure.c']

+                   '_ctypes/cfield.c']

         depends = ['_ctypes/ctypes.h']

         if sys.platform == 'darwin':