http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59656
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> --- Thanks Paul. You mentioned a proposed patch, are you working on that? From a quick look I didn't see how to fix it without adding a _Sp_counted_base::_M_add_ref_lock_nothrow() function and adding new constructors taking an additional std::nothrow_t argument to the whole class hierarchy. Did you have a simpler fix in mind?
