[Boost-bugs] [Boost C++ Libraries] #10422: Counting Iterator return-type causes lifetime issues

Subject: [Boost-bugs] [Boost C++ Libraries] #10422: Counting Iterator return-type causes lifetime issues
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-08-29 17:18:40

#10422: Counting Iterator return-type causes lifetime issues
------------------------------+------------------------------
 Reporter:  neilgroves        |      Owner:  jeffrey.hellrung
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  iterator
  Version:  Boost 1.56.0      |   Severity:  Problem
 Keywords:                    |
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 The counting_iterator upon integers has a dereference member function
 which is a reference to an integral value held in the iterator. Since an
 iterator may be destroyed, the reference can be invalid.

 An example where this occurs was provided by a user of Boost.Range. The
 application used counting_range with reversed and transformed adaptors.
 The result was garbage since the reversed dereference member function does
 *boost::prior(this->base()); Hence it returns a reference to a temporary
 iterator that results from the "prior" function.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10422>
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