[Boost-bugs] [Boost C++ Libraries] #5065: Valgrind complaint when using Boost MPI

Subject: [Boost-bugs] [Boost C++ Libraries] #5065: Valgrind complaint when using Boost MPI
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-01-13 02:54:13

#5065: Valgrind complaint when using Boost MPI
------------------------------------+---------------------------------------
 Reporter:  dongryel@…              |       Owner:  dgregor 
     Type:  Patches                 |      Status:  new     
Milestone:  To Be Determined        |   Component:  mpi     
  Version:  Boost 1.45.0            |    Severity:  Cosmetic
 Keywords:  Boost MPI               |  
------------------------------------+---------------------------------------
 I am using the latest Boost library (version 1.45.0) on Ubuntu. I have
 built
 Boost from the source using the bjam.

 boost::mpi::all_reduce uses boost::mpi::broadcast which seems to generate
 annoying invalid write errors under valgrind. The problem points to the
 line 47 in boost/mpi/detail/packed_oprimitive.hpp in const std::size_t
 &size() const
 function. I changed the function to:

     const std::size_t& size() const
     {
       const_cast<std::size_t &>(size_) = buffer_.size();
       return size_;
     }

 and the valgrind complaint seems to be gone. Const_cast seems less than
 ideal, but
 it fixes the problem.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5065>
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