http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56922
--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-04-11 16:16:07 UTC --- I was about to reply that the issue isn't just about std::set and I was trying to remember why we decided many years ago to *not* have the explicit in the singled out default constructors ;) Anyway, cool, I read the active DR as implying that we are already Ok vs the proposed resolution. Therefore we should likely suspend this in the meanwhile.
