[boost] [smart_ptr] make_shared perfect forwarding bug

Subject: [boost] [smart_ptr] make_shared perfect forwarding bug
From: Frank Mori Hess (fmhess_at_[hidden])
Date: 2009-04-18 19:03:09

Perfect forwarding doesn't seem to work quite correctly with 
boost::make_shared.  The attached program, which tries to pass a move-only 
type through make_shared fails to compile with gcc in c++0x mode.  To fix 
it, I had to change the definition of detail::forward in make_shared.hpp 
to use rvalue references:

#if defined( BOOST_HAS_RVALUE_REFS )
template< class T > T&& forward( T &&t )
{
    return t;
}
#endif

This is just based on looking at how gcc implements std::forward.  Is this 
the right fix?