template2.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 Gabriel Dos_Reis <[e-mail]>

template <template <typename> class C, typename T> class foo {
  typedef typename C<T>::bar bar;
  foo(bar);
};

template <template <typename> class C, typename T> foo<C,T>::foo(bar)
{} // gets bogus error - C<T> not a class