[Boost-bugs] [Boost C++ Libraries] #7363: coordinate_matrix::sort() fails with gcc 4.7

Subject: [Boost-bugs] [Boost C++ Libraries] #7363: coordinate_matrix::sort() fails with gcc 4.7
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-09-10 21:23:18

#7363: coordinate_matrix::sort() fails with gcc 4.7
-------------------------------------+--------------------------------------
 Reporter:  guwi17                   |       Owner:  guwi17 
     Type:  Bugs                     |      Status:  new    
Milestone:  Boost 1.52.0             |   Component:  None   
  Version:  Boost 1.51.0             |    Severity:  Problem
 Keywords:  ublas coordinate_matrix  |  
-------------------------------------+--------------------------------------
 coordinate_matrix::sort() fails with gcc 4.7 because std::inplace_merge
 requires the provided iterator's method operator*() to really return a
 reference. The current implementation of index_triple's iterator however
 returns a proxy (which does not comply to the random_access iterator
 concept).

 (The same problem applies to zip_iterator, see e.g.
 http://www.boost.org/doc/libs/1_48_0/libs/iterator/doc/new-iter-

 concepts.html#changes-to-algorithm-requirements )

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7363>
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