[Bug libstdc++/54249] [C++11] No ::nullptr_t in header <stddef.h>

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54249

--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-08-14 10:38:45 UTC ---
It's true however, that, as I mentioned already somewhere, in general our
implementation doesn't have control over the underlying *.h headers. Thus, it
seems mildly inconsistent to add things only to the *few* *.h headers over
which we do have control. And, indeed, apparently the Standard is in some sort
of half way state, because LWG already morally acknowledged that libstdc++-v3
is not special about this with the resolution of LWG 456, which allows the c*
headers to define entities both in the global namespace and in std:: exactly
because (right? Why otherwise?) it's now allowed for a c* to just include
whatever *.h it finds on the system.