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http://bugs.exim.org/show_bug.cgi?id=1500
Philip Hazel <ph10@???> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #1 from Philip Hazel <ph10@???> 2014-07-08 17:31:38 ---
Thanks for your report. This bug has, however, already been fixed in the code
for the next release. This is the ChangeLog entry:
7. Fixed a bug concerned with zero-minimum possessive groups that could match
an empty string, which sometimes were behaving incorrectly in the
interpreter (though correctly in the JIT matcher). This pcretest input is
an example:
'\A(?:[^"]++|"(?:[^"]*+|"")*+")++'
NON QUOTED "QUOT""ED" AFTER "NOT MATCHED
the interpreter was reporting a match of 'NON QUOTED ' only, whereas the
JIT matcher and Perl both matched 'NON QUOTED "QUOT""ED" AFTER '. The test
for an empty string was breaking the inner loop and carrying on at a lower
level, when possessive repeated groups should always return to a higher
level as they have no backtrack points in them. The empty string test now
occurs at the outer level.
I could reproduce your bug in the 8.35 interpreter, but not with JIT or the
8.36 development code, so I'm sure this is the same bug.
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