http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57011
Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |WONTFIX --- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-04-20 07:53:44 UTC --- The library-only checks date back to the C++98 times, nothing is supported among the recent developments and we are not even trying to add that support, many details are simply impossible to do right (not even the whole C++98 is handled correctly). Will go completely away with constraints in the forthcoming TS at this point.