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http://bugs.exim.org/show_bug.cgi?id=1595
Philip Hazel <ph10@???> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |INVALID
--- Comment #1 from Philip Hazel <ph10@???> 2015-03-04 09:41:24 ---
Thanks for the report. However, this is just a classic case of running out of
system stack. PCRE uses recursive function calls to remember backup points, and
a pattern such as yours, which matches only one character in a repeated group,
is going to use up lots and lots of stack when applied to a long subject. There
are features in PCRE for limiting the amount of stack that is used, but the
defaults are large. See "man pcrestack" for more details.
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