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v0.5.1
https://github.com/python/cpython
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Tip revision: 1043f95b9b0353bbeda7b7d5713643b8d4e4bcfa authored by Larry Hastings on 09 September 2015, 06:58:10 UTC
Version bump for Python 3.5.0rc4.
Tip revision: 1043f95
infinite_loop_re.py

# This was taken from http://python.org/sf/1541697
# It's not technically a crasher.  It may not even truly be infinite,
# however, I haven't waited a long time to see the result.  It takes
# 100% of CPU while running this and should be fixed.

import re
starttag = re.compile(r'<[a-zA-Z][-_.:a-zA-Z0-9]*\s*('
        r'\s*([a-zA-Z_][-:.a-zA-Z_0-9]*)(\s*=\s*'
        r'(\'[^\']*\'|"[^"]*"|[-a-zA-Z0-9./,:;+*%?!&$\(\)_#=~@]'
        r'[][\-a-zA-Z0-9./,:;+*%?!&$\(\)_#=~\'"@]*(?=[\s>/<])))?'
    r')*\s*/?\s*(?=[<>])')

if __name__ == '__main__':
    foo = '<table cellspacing="0" cellpadding="0" style="border-collapse'
    starttag.match(foo)
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