boost::mpi not able to pass strings with non-char element types

[boost@…]

The last two checkouts I installed both failed passing strings through boost::mpi communication methods when the element type was not char.

The distributed hello_world.cpp shows this when the strings are changed to wide strings (attached).

Making the responsible methods generic on the string's element type fixes it (patch attached).

However, I assume this is supposed to be handled by boost::serialization.

[boost@…]

Modified hello world program demonstrating the problem

[boost@…]

proposed fix

[Matthias Troyer]

This is already implemented