Re: c++/7522: access by friend function's default argument

[Christoph Ludwig <cludwig@cdc.informatik.tu-darmstadt.de>]

The following reply was made to PR c++/7522; it has been noted by GNATS.

From: Christoph Ludwig <cludwig@cdc.informatik.tu-darmstadt.de>
To: bangerth@dealii.org, gcc-bugs@gcc.gnu.org, gcc-prs@gcc.gnu.org,
	nobody@gcc.gnu.org, gcc-gnats@gcc.gnu.org
Cc:  
Subject: Re: c++/7522: access by friend function's default argument
Date: Fri, 17 Jan 2003 09:37:57 +0100

 Hi,
 
 On Thu, Oct 31, 2002 at 05:24:55PM -0000, bangerth@dealii.org wrote:
 > Synopsis: access by friend function's default argument
 > 
 > State-Changed-From-To: feedback->analyzed
 > State-Changed-By: bangerth
 > State-Changed-When: Thu Oct 31 09:24:55 2002
 > State-Changed-Why:
 >     One way or other, the example Christoph gave shows a bug,
 >     since treatment is not consistent. So I reset the state
 >     to "analyzed".
 >     
 >     And no, I don't know what is right and wrong here, sorry.
 
 A post by John Spicer to comp.std.c++ (Thread: "Req Clarification:
 private type used in parameter list of friend function") pointed me to
 11.0.5 in the standard. There is an example that settles the question,
 I think:
 
   class A {
     typedef int I; // private member
     I f();
     friend I g(I);
     static I x;
   }; 
 
   A::I A::f() { return 0; } 
   A::I g(A::I p = A::x); 
 
 gcc 3.2.1 rejects the default argument in the last line, but according
 to the standard the example is well formed.
 
 Regards
 
 Christoph
 
 > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7522