[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

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2013-03-13
         AssignedTo|unassigned at gcc dot       |paolo.carlini at oracle dot
                   |gnu.org                     |com
     Ever Confirmed|0                           |1

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-03-13 09:46:50 UTC ---
Seems straightforward enough to be fixable in 4.8.0 too. Does this patchlet
cover all the issues you can see?

Index: type_traits
===================================================================
--- type_traits (revision 196609)
+++ type_traits (working copy)
@@ -444,7 +444,7 @@
   /// is_fundamental
   template<typename _Tp>
     struct is_fundamental
-    : public __or_<is_arithmetic<_Tp>, is_void<_Tp>>::type
+    : public __or_<is_arithmetic<_Tp>, is_void<_Tp>,
__is_nullptr_t<_Tp>>::type
     { };

   /// is_object