Re: [Boost-bugs] [Boost C++ Libraries] #10382: 1.56.0 Graph adjacency_list has compile errors on g++ 4.6.4

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10382: 1.56.0 Graph adjacency_list has compile errors on g++ 4.6.4
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-08-20 22:13:39

#10382: 1.56.0 Graph adjacency_list has compile errors on g++ 4.6.4
----------------------------------------------+---------------------------
  Reporter:  Conrad Mercer <conrad.mercer@…>  |      Owner:  jewillco
      Type:  Bugs                             |     Status:  new
 Milestone:  To Be Determined                 |  Component:  graph
   Version:  Boost 1.56.0                     |   Severity:  Showstopper
Resolution:                                   |   Keywords:  compile error
----------------------------------------------+---------------------------

Comment (by mikael.s.persson@…):

 Here is a git-diff style patch for this.

 For the switching for compiler versions, I just assumed the three cases
 covered in the stored_edge_property class, that is: no rvalue support
 (legacy code); rvalue and defaulting support (defaulted move functions);
 and, the "msvc" exception for quirky defaulting behavior. In the legacy
 version, no additional code is required in stored_edge. In the "msvc"
 exception, there is also nothing required because the move functions in
 stored_edge_property rely on the copy functions of stored_edge (which is
 fine if "Vertex" is a POD-type, which is the case for all adj-list
 variations). So, the only real code is the default move functions added
 for that case when rvalue and defaulting is well supported.

 I also added a defaulted copy-constructor for stored_edge. This is because
 stored_edge is copyable in all other cases (and providing a move-
 constructor disables the implicit copy-constructor), and therefore, should
 remain so to minimize the chance of any other collateral damage elsewhere.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10382#comment:3>
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