Re: [Boost-bugs] [Boost C++ Libraries] #5538: boost.mpi miscompiles with gcc4.6 and option -std=c++0x

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #5538: boost.mpi miscompiles with gcc4.6 and option -std=c++0x
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-12-19 10:41:02

#5538: boost.mpi miscompiles with gcc4.6 and option -std=c++0x
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  Reporter:  christophe.prudhomme@…                |       Owner:  dgregor       
      Type:  Bugs                                  |      Status:  new           
 Milestone:  To Be Determined                      |   Component:  mpi           
   Version:  Boost 1.46.1                          |    Severity:  Regression    
Resolution:                                        |    Keywords:  mpi stdc=c++0x
---------------------------------------------------+------------------------

Comment (by jwakely.boost@…):

 This is a GCC 4.6 bug that only affects -std=c++0x mode.

 In C++0x mode we assume all allocators provide the C++11 allocator
 interface, which is a bad assumption.  The fix (which I've implemented in
 GCC 4.7) is to use std::allocator_traits to support allocators without the
 full interface.

 I'm going to open a GCC bug and will update this ticket with a link.

 A workaround is to provide construct(pointer) in the MPI allocator, or
 even to provide the C++11-style:

   template<typename... Args> void construct(T*, Args&&...);

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5538#comment:3>
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