Add pcre to the list of safe modules.
diff --git a/Lib/rexec.py b/Lib/rexec.py
index a548e24..c181d43 100644
--- a/Lib/rexec.py
+++ b/Lib/rexec.py
@@ -133,7 +133,7 @@
     ok_builtin_modules = ('audioop', 'array', 'binascii',
 			  'cmath', 'errno', 'imageop',
 			  'marshal', 'math', 'md5', 'operator',
-			  'parser', 'regex', 'rotor', 'select',
+			  'parser', 'regex', 'pcre', 'rotor', 'select',
 			  'strop', 'struct', 'time')
 
     ok_posix_names = ('error', 'fstat', 'listdir', 'lstat', 'readlink',