http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51183
--- Comment #4 from Marc Glisse <marc.glisse at normalesup dot org> 2011-11-17 11:44:55 UTC --- (In reply to comment #1) > This was necessary because (I believe) it is impossible to implement the > piecewise_construct_t constructor without compiler support for forwarding > constructors. Ah, right, makes sense, thank you.