1  
       2  # This was taken from http://python.org/sf/1541697
       3  # It's not technically a crasher.  It may not even truly be infinite,
       4  # however, I haven't waited a long time to see the result.  It takes
       5  # 100% of CPU while running this and should be fixed.
       6  
       7  import re
       8  starttag = re.compile(r'<[a-zA-Z][-_.:a-zA-Z0-9]*\s*('
       9          r'\s*([a-zA-Z_][-:.a-zA-Z_0-9]*)(\s*=\s*'
      10          r'(\'[^\']*\'|"[^"]*"|[-a-zA-Z0-9./,:;+*%?!&$\(\)_#=~@]'
      11          r'[][\-a-zA-Z0-9./,:;+*%?!&$\(\)_#=~\'"@]*(?=[\s>/<])))?'
      12      r')*\s*/?\s*(?=[<>])')
      13  
      14  if __name__ == '__main__':
      15      foo = '<table cellspacing="0" cellpadding="0" style="border-collapse'
      16      starttag.match(foo)