http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50441
Bug #: 50441 Summary: [C++0x] <type_traits> is missing GNU extension types Classification: Unclassified Product: gcc Version: 4.6.1 Status: UNCONFIRMED Severity: minor Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: classixret...@gmail.com With -std=gnu++0x enabled, std::is_integral<__uint128_t>::value, std::is_integral<__int128_t>::value, and std::is_floating_point<__float128>::value should all be true. Unfortunately, they aren't. This is an extremely easy simple fix, I'd assume, but it's one that's needed, I think.