[meego]$/opt/org.python.python-2.7.2/bin/python -m test.regrtest ...
...
test_callback_register_double (ctypes.test.test_callbacks.SampleCallbacksTestCase) ... Segmentation fault

this is after a native (not cross-compile) configure; make; make install on armv7:
== CPython 2.7.2 (default, Jul 25 2011, 11:06:06) [GCC 4.5.1 20100731 (MeeGo 4.5.1-1) [release 4.5-2010.09-1]]
==   Linux-2.6.37-24.5.CE-adaptation-n900-armv7l-with-glibc2.4 little-endian
==   /tmp/test_python_6700
Testing with flags: sys.flags(debug=0, py3k_warning=0, division_warning=0, division_new=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=0, tabcheck=0, verbose=0, unicode=0, bytes_warning=0)

that is the only regrtest seg fault, but there are several worrisome(?) failures in test_ctypes:
...
======================================================================
FAIL: test_longlongresult (ctypes.test.test_functions.FunctionTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/opt/org.python.python-2.7.2/lib/python2.7/ctypes/test/test_functions.py", line 167, in test_longlongresult
    self.assertEqual(result, 21)
AssertionError: 10L != 21
...
Ran 335 tests in 3.949s

FAILED (failures=17, errors=1, skipped=1)
test test_ctypes failed -- multiple errors occurred
1 test failed:
    test_ctypes
============

a few other test modules have failures, they appear to be less severe:
test_cmath 
test_float 
#http://bugs.python.org/issue12331
test_lib2to3 
test_math 
test_pyexpat 
test_strtod


=================
note: the arm systems i have access to (meego armv7 & android sl4a/py4a) both natively use python < 2.6.7; forgive my ignorance if 2.7 series is not expected to be mature on arm. please also forgive if i should have just disabled ctypes in setup.py as many of the online (cross-compile) instructions suggest:
disabled_module_list.append('_ctypes')
===============

test_ctypes for a native build of 2.6.7 does not seg fault, but does have the same test failures:
========
...
Ran 327 tests in 3.025s

FAILED (failures=17)
test test_ctypes failed -- multiple errors occurred
1 test failed:
    test_ctypes

problem also occurs when built with configure option --with-system-ffi
not sure whether it might be a compiler bug or an invalid test?

some debug output:
[@localhost Python-2.7.2]$ gdb ./python
(gdb) run -Wd -3 -E -tt  ./Lib/test/regrtest.py -v test_ctypes

...
test_ushort (ctypes.test.test_callbacks.Callbacks) ... ok
test_callback_register_double (ctypes.test.test_callbacks.SampleCallbacksTestCase) ...
Program received signal SIGSEGV, Segmentation fault.
0x99999998 in ?? ()
(gdb) where
#0  0x99999998 in ?? ()
#1  0x40409718 in _testfunc_cbk_reg_double (a=5.5, b=1.1964487668029418e-47,
    c=1.001023, d=0, e=1.5999999999999999e-05, func=0x9999999a)
    at /home/Python-2.7.2/Modules/_ctypes/_ctypes_test.c:39
#2  0x41edc9a0 in ffi_call_SYSV () from /usr/lib/libffi.so.5
#3  0x40160000 in slot_tp_iter (self=Cannot access memory at address 0xffffffe0
) at Objects/typeobject.c:5579
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

the referenced file snippets:

/home/Python-2.7.2/Modules/_ctypes/_ctypes_test.c

     35 EXPORT(double)
     36 _testfunc_cbk_reg_double(double a, double b, double c, double d, double         e,
     37                          double (*func)(double, double, double, double,         double))
     38 {
     39     return func(a*a, b*b, c*c, d*d, e*e);

/home/Python-2.7.2/Objects/typeobject.c

   5567 static PyObject *
   5568 slot_tp_iter(PyObject *self)
   5569 {
   5570     PyObject *func, *res;
   5571     static PyObject *iter_str, *getitem_str;
   5572
   5573     func = lookup_method(self, "__iter__", &iter_str);
   5574     if (func != NULL) {
   5575         PyObject *args;
   5576         args = res = PyTuple_New(0);
   5577         if (args != NULL) {
   5578             res = PyObject_Call(func, args, NULL);
   5579             Py_DECREF(args);
   5580         }
   5581         Py_DECREF(func);
   5582         return res;
   5583     }

test_ctypes is successful in 2.7.3rc1, armv7l (using --with-system-ffi (3.0.10); i haven't tested w/out that config option)

note:

Python-2.7.3rc1/Modules/_ctypes/libffi/configure
contains this line:
VERSION='3.0.10rc0'

(2.7.2 has the same line)

but upstream libffi 3.0.10 (not rc) has been released for awhile now

Can this be closed as "out of date" as we're now up to 2.7.7?

2.7 now uses libffi 3.1 and our ARM buildbots are quite healthy so I think we can now close this 'out of date'.