[Bug libstdc++/56609] [C++11] Several type traits give incorrect results for std::nullptr_t

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56609

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-03-13 09:58:29 UTC ---
Thanks. Let's go ahead then and resolve this specific issue as you filed it.
The fix should be very safe because std::is_fundamental is not used anywhere 
as an implementation detail.