New submission from Armin Rigo <ar...@users.sourceforge.net>:
The re module is buggy is rare cases; see attached example script.
The bug is caused by the macros LASTMARK_SAVE and LASTMARK_RESTORE which are
sometimes used without the extra code that does if (state->repeat)
{mark_save()/mark_restore()}.
The bug appears by mis-reporting the position of groups within a repeated match
(with * or +), notably the position of some groups that matched in older
repetitions but (after some backtracking) not in newer ones.
----------
components: Extension Modules
files: x.py
messages: 109019
nosy: arigo
priority: normal
severity: normal
status: open
title: sre bug: lastmark_save/restore
versions: Python 2.7
Added file: http://bugs.python.org/file17822/x.py
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<http://bugs.python.org/issue9134>
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