[Bug c++/48582] New: Template non-type arguments doesn't accept null pointer constant value

[boostcpp at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48582

           Summary: Template non-type arguments doesn't accept null
                    pointer constant value
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: boostcpp@gmail.com


According to current C++0x draft 14.3.2 [temp.arg.nontype],
template non-type arguments can be a constant expression that evaluates to a
null pointer value or null member pointer value.
This change was made in n1905.

So the following code is well-formed.

template < void * = nullptr > void f() { }

int main()
{
    f() ;
    f<nullptr>() ;
    f<0>() ;

    constexpr void * ptr = nullptr ;
    f<ptr>() ;
}

But current gcc does not accept it.
Or is this just unimplemented feature?