[Bug c++/55992] constexpr static member function not recognised in templated using statement

["msebor at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55992

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2013-01-15 00:00:00         |2016-3-14
                 CC|                            |msebor at gcc dot gnu.org
      Known to fail|                            |4.9.3, 5.1.0, 6.0

--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Reconfirmed with today's top of trunk of 6.0 and with all prior supported
versions.  Below is an ever-so-slightly simpler test case:

$ cat v.c && /home/msebor/build/gcc-trunk-svn/gcc/xgcc
-B/home/msebor/build/gcc-trunk-svn/gcc -S -Wall -Wextra -Wpedantic -xc++ v.c
template <int> struct A { };

template <int I>
struct B
{
  static constexpr int f (int i) { return i; }

  template <int J>
  using C = A<f (J)>;   // error

  C<I> c;
};
v.c: In substitution of âtemplate<int I> template<int J> using C = A<f(J)>
[with int J = I; int I = I]â:
v.c:11:6:   required from here
v.c:9:17: error: âfâ was not declared in this scope
   using C = A<f (J)>;   // error
               ~~^~~