id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5538	boost.mpi miscompiles with gcc4.6 and option -std=c++0x	christophe.prudhomme@…	Matthias Troyer	"Hello

boost.mpi with gcc-4.6 and the option -std=c++0x don't get well together
here is a very simple example

----- t.cpp
#include <boost/mpi.hpp>
------ end of t.cpp

 the issue arises with the use of the -std=c++0x flag to use
the new c++ standard. It use to work properly with previous g++ version

compile without -std=c++0x
g++ -I/usr/include/mpi  -c t.cpp
no errors

try compiling with -std=c++0x
 g++ -I/usr/include/mpi -std=c++0x -c t.cpp

                                              2011-05-12 22:40:17
prudhomm pts/28
In file included from /usr/include/c++/4.6/memory:67:0,
                from /usr/include/boost/mpi/allocator.hpp:18,
                from /usr/include/boost/mpi.hpp:22,
                from t.cpp:3:
/usr/include/c++/4.6/bits/stl_uninitialized.h: In function ‘void
std::__uninitialized_default_n_a(_ForwardIterator, _Size, _Allocator&)
[with _ForwardIterator = char*, _Size = long unsigned int, _Allocator
= boost::mpi::allocator<char>]’:
/usr/include/c++/4.6/bits/vector.tcc:474:8:   instantiated from ‘void
std::vector<_Tp, _Alloc>::_M_default_append(std::vector<_Tp,
_Alloc>::size_type) [with _Tp = char, _Alloc =
boost::mpi::allocator<char>, std::vector<_Tp, _Alloc>::size_type =
long unsigned int]’
/usr/include/c++/4.6/bits/stl_vector.h:592:4:   instantiated from
‘void std::vector<_Tp, _Alloc>::resize(std::vector<_Tp,
_Alloc>::size_type) [with _Tp = char, _Alloc =
boost::mpi::allocator<char>, std::vector<_Tp, _Alloc>::size_type =
long unsigned int]’
/usr/include/boost/mpi/detail/packed_oprimitive.hpp:96:46:
instantiated from here
/usr/include/c++/4.6/bits/stl_uninitialized.h:576:6: error: no
matching function for call to
‘boost::mpi::allocator<char>::construct(char*)’
/usr/include/c++/4.6/bits/stl_uninitialized.h:576:6: note: candidate is:
/usr/include/boost/mpi/allocator.hpp:168:8: note: void
boost::mpi::allocator<T>::construct(boost::mpi::allocator<T>::pointer,
const T&) [with T = char, boost::mpi::allocator<T>::pointer = char*]
/usr/include/boost/mpi/allocator.hpp:168:8: note:   candidate expects
2 arguments, 1 provided
"	Bugs	new	To Be Determined	mpi	Boost 1.46.1	Regression		mpi stdc=c++0x	christophe.prudhomme@… thomas.taylor@… mateusz@…