After 19d9f0a177de and 020ebe0be33e, test_ctypes hangs when test suite is run in sandbox. This problem occurs only in Python 3.3.

$ sandbox python3.3 -B -m test.regrtest --timeout=10 -v test_ctypes
== CPython 3.3a0 (default:020ebe0be33e+, Apr 24 2011, 17:52:58) [GCC 4.5.2]
==   Linux-${version}
==   /tmp/test_python_23902
Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=1, no_user_site=0, no_site=0, ignore_environment=0, verbose=0, bytes_warning=0, quiet=0)
[1/1] test_ctypes
Timeout (0:00:10)!
Thread 0x00007fc205f54700:
  File "/usr/lib64/python3.3/subprocess.py", line 466 in _eintr_retry_call
  File "/usr/lib64/python3.3/subprocess.py", line 1412 in _execute_child
  File "/usr/lib64/python3.3/subprocess.py", line 766 in __init__
  File "/usr/lib64/python3.3/ctypes/util.py", line 198 in _findSoname_ldconfig
  File "/usr/lib64/python3.3/ctypes/util.py", line 206 in find_library
  File "/usr/lib64/python3.3/ctypes/test/test_find.py", line 15 in <module>
  File "/usr/lib64/python3.3/ctypes/test/__init__.py", line 64 in get_tests
  File "/usr/lib64/python3.3/test/test_ctypes.py", line 11 in test_main
  File "/usr/lib64/python3.3/test/regrtest.py", line 1094 in runtest_inner
  File "/usr/lib64/python3.3/test/regrtest.py", line 887 in runtest
  File "/usr/lib64/python3.3/test/regrtest.py", line 587 in _runtest
  File "/usr/lib64/python3.3/test/regrtest.py", line 711 in main
  File "/usr/lib64/python3.3/test/regrtest.py", line 1672 in <module>
  File "/usr/lib64/python3.3/runpy.py", line 73 in _run_code
  File "/usr/lib64/python3.3/runpy.py", line 160 in _run_module_as_main