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

cc changed

Sat, 21 May 2011 10:15:36 GMT

cc thomas.taylor@… added

petar.marendic@… — Mon, 17 Oct 2011 13:29:37 GMT

My fix for this was to define a corresponding member function of the class allocator in boost/mpi/allocator.h:

/* Default construct a value of type T at the location referenced by p. */

void construct(pointer p) {

new ((void *)p) T();

}

jwakely.boost@… — Mon, 19 Dec 2011 10:41:02 GMT

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&&...);

jwakely.boost@… — Mon, 19 Dec 2011 18:05:15 GMT

http://gcc.gnu.org/PR51626

cc changed

Mateusz Loskot — Mon, 19 Dec 2011 18:13:00 GMT

cc mateusz@… added

Mateusz Loskot — Thu, 22 Dec 2011 10:34:37 GMT

Jonathan has fixed the GCC Bug 51626 linked above. The fix will be in GCC 4.6.3

smr@… — Wed, 01 Feb 2012 04:06:32 GMT

Can this be applied for release 1.49, please?

owner changed

Matthias Troyer — Tue, 01 Jan 2013 11:43:46 GMT

owner changed from Douglas Gregor to Matthias Troyer