Re: c++/8932: g++ 3.2 error parsing a scoped friend declaration

Re: c++/8932: g++ 3.2 error parsing a scoped friend declaration

[bangerth]

Synopsis: g++ 3.2 error parsing a scoped friend declaration

State-Changed-From-To: open->closed
State-Changed-By: bangerth
State-Changed-When: Fri Dec 13 12:52:01 2002
State-Changed-Why:
    Your code is ill-formed: you can't specify just one instance
    of a template as a friend, you have to specify all of them.
    The syntax for this would be
        template <typename Y> friend class ::A;
    which is accepted by all compilers since 2.95.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8932

Re: c++/8932: g++ 3.2 error parsing a scoped friend declaration

[Martin Sebor]

The following reply was made to PR c++/8932; it has been noted by GNATS.

From: Martin Sebor <sebor@roguewave.com>
To: gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: c++/8932: g++ 3.2 error parsing a scoped friend declaration
Date: Fri, 13 Dec 2002 15:25:21 -0700

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8932
 
 I disagree. And so do most modern compilers.
 
 Would you care to point me to the text justifies what you said?
 
 Thanks
 Martin
 

c++/8932: g++ 3.2 error parsing a scoped friend declaration

[sebor]

>Number:         8932
>Category:       c++
>Synopsis:       g++ 3.2 error parsing a scoped friend declaration
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Dec 13 12:26:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     sebor@roguewave.com
>Release:        3.2
>Organization:
>Environment:

>Description:
This is still failing in 3.2. The problem was first reported against 2.95.2. It was analyzed by Martin v. Loewis as a known parser limitation but, AFAIK, we never entered in GNATS.

Regards
Martin

$ cat t.cpp; g++ --version; g++ -c t.cpp; echo $?

template <class T>
struct A { };


template <class T>
struct B
{
    friend class ::A<T>;
};
g++ (GCC) 3.2
Copyright (C) 2002 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

t.cpp:9: parse error before `;' token
1
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: