http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53000
--- Comment #7 from Marc Glisse <marc.glisse at normalesup dot org> 2012-04-24 23:23:09 UTC --- (In reply to comment #6) > which way is the standards committee leaning? The DR is young, there hasn't been a meeting since. There weren't many objections to the proposed resolution, although it did seem strange to some that common_type<int&,int&>::type would be int and not int&. I am too new to the process to say more... (I guess the proposed resolution should make the one-argument version of common_type equivalent to decay, to be consistent)