Re: [Boost-bugs] [Boost C++ Libraries] #3458: Xpressive Library - sub_match does not work on some occasions

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3458: Xpressive Library - sub_match does not work on some occasions
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-09-17 03:55:47

#3458: Xpressive Library - sub_match does not work on some occasions
----------------------------------------------------+-----------------------
  Reporter:  Eric Schwarz <master.universe@…>       |       Owner:  eric_niebler       
      Type:  Bugs                                   |      Status:  closed             
 Milestone:  Boost 1.41.0                           |   Component:  xpressive          
   Version:  Boost 1.40.0                           |    Severity:  Problem            
Resolution:  invalid                                |    Keywords:  xpressive sub_match
----------------------------------------------------+-----------------------
Changes (by eric_niebler):

  * status:  new => closed
  * resolution:  => invalid

Comment:

 It's not valid to use a regex algorithm to find a pattern in a temporary
 string, as in:

   regex_match( string("2009/09/14 05:30"), what, rex )

 The match_results struct ends up holding iterators into the temporary
 string, which has gone out of scope. See the section in the docs on
 match_results and iterator invalidation.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3458#comment:1>
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