http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49813
--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-07-22 10:52:03 UTC --- We don't want this to depend on -std=gnu++0x vs -std=c++0x!! The function is there, declared and callable, as removing constexpr reveals, the behavior wrt constexpr data cannot depend on __STRICT_ANSI__.
