--- test_re.py.orig	2008-09-10 17:27:00.000000000 +0300
+++ test_re.py	2009-06-01 18:47:14.000000000 +0300
@@ -684,6 +684,10 @@
         self.assertEqual(pattern.sub('#', 'a\nb\n' ), 'a#\nb#\n#' )
         self.assertEqual(pattern.sub('#', 'a\nb\nc'), 'a#\nb#\nc#')
         self.assertEqual(pattern.sub('#', '\n'), '#\n#')
+    
+    def test_bug_6156(self):
+        re.compile(r'([xy])(?:\s{0,65535}\1)+')
+        re.compile(r'([xy])(?:\s*\1)+')
 
 
 def run_re_tests():