What's this?

[Robert L Krawitz]

   Cc: egcs-bugs@cygnus.com, smr@torrent.com, jcallen@torrent.com, rlk@rlk-ppp-1
   From: Alexandre Oliva <oliva@dcc.unicamp.br>
   Date: 20 Sep 1998 04:44:05 +-300

   --Multipart_Sun_Sep_20_04:44:05_1998-1
   Content-Type: text/plain; charset=US-ASCII

   Robert L Krawitz <rlk@tiac.net> writes:

   > bar.C:4: warning: friend declaration `class foo<T> bar(int, const class foo<T> &)'
   > bar.C:4: warning:   declares a non-template function

That wasn't what I was objecting to...

   Here's a patch to the egcs FAQ for it to explain how to fix your code.
   Jeff, ok to install?

   +template <typename T>
   +class foo {
   +  friend void bar<>(foo<T>);
   +};

The problem is that this doesn't work with a lot of compilers:

template<class T>
class foo
{
  friend void bar<>(foo<T>);
};

This, however, does work reliably, at least with the compilers I have
at hand:

template<class T>
class foo
{
  friend void bar<T>(foo<T>);
};

>From a standpoint of clarity and back compatibility, I believe that it
would be preferable to emphasize that the second form is equally legal
(it is, no?) and more compatible with older compilers.

-- 
Robert Krawitz <rlk@tiac.net>	       http://www.tiac.net/users/rlk/

Tall Clubs International  --  http://www.tall.org/ or 1-888-IM-TALL-2
Member of the League for Programming Freedom -- mail lpf@uunet.uu.net

"Linux doesn't dictate how I work, I dictate how Linux works."
--Eric Crampton