http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53339
Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bkoz at redhat dot com --- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-05-14 02:24:14 UTC --- But things seem not so easy in mainline (this is an enhancement which can go only in mainline): in any case we fail at the line: using mapped_type = typename _Pair::second_type; in hashtable_policy.h, because, afaics, with the code reworked to use alias templates we end up instantiating everything down to __detail::_Map_base.