ns3.c

this is a gcc file, you can download it and learn its usetility, for further detail please look at t

// Build don't link:

// Copyright (C) 1999 Free Software Foundation

// by Alexandre Oliva <[e-mail]>
// based on bug report by Ovidiu Toader <[e-mail]>

// crash test - XFAIL *-*-*

namespace N {
  template <typename T> class A {
    template <typename T_> friend class A;
  };
}