http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49274
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |paolo.carlini at oracle dot | |com Severity|major |normal --- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-06-03 08:33:42 UTC --- the problem is that std::map requires the CMP class to be defined it's undefined behaviour to instantiate std::map with an incomplete type, apparently what's changed is that unique_ptr instantiates it. Paolo, any idea if is this caused by a noexcept change somewhere?