c++/6628: cannot typedef const functions

c++/6628: cannot typedef const functions

[ge]

>Number:         6628
>Category:       c++
>Synopsis:       cannot typedef const functions
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri May 10 13:56:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     ge@cs.twsu.edu
>Release:        gcc version 3.0.4
>Organization:
>Environment:
gcc version 3.0.4 (Mandrake Linux 8.2 3.0.4-2mdk)
>Description:
// t.cc
#include    <string>
struct Person { void print (); std::string name_; };
typedef void (Person::*MF)() const;
typedef void FVC (void) const;


The last line caused the following error message:
t.cc:4: invalid type qualifier for non-member function type
t.cc:4: `const' and `volatile' function specifiers on `FVC' invalid in type
>How-To-Repeat:
cut and paste the 4 lines of source code to a file, and the
compile it with g++-3.0.4.
>Fix:

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

Re: c++/6628: cannot typedef const functions

[lerdsuwa]

Synopsis: cannot typedef const functions

State-Changed-From-To: open->closed
State-Changed-By: lerdsuwa
State-Changed-When: Fri Jun  7 07:35:13 2002
State-Changed-Why:
    Not a bug.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6628

Re: c++/6628: cannot typedef const functions

[Phil Edwards]

The following reply was made to PR c++/6628; it has been noted by GNATS.

From: Phil Edwards <phil@jaj.com>
To: ge@cs.twsu.edu
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c++/6628: cannot typedef const functions
Date: Fri, 10 May 2002 17:03:55 -0400

 On Fri, May 10, 2002 at 08:52:39PM -0000, ge@cs.twsu.edu wrote:
 > typedef void (Person::*MF)() const;
 > typedef void FVC (void) const;
 > 
 > The last line caused the following error message:
 > t.cc:4: invalid type qualifier for non-member function type
 > t.cc:4: `const' and `volatile' function specifiers on `FVC' invalid in type
 
 Yeah... so.... what's the problem?  :-)
 
 'const' is only allowed to modify member functions, not non-member functions.
 The typedef has nothing to do with it:
 
     29% cat q.cc
 
     void f() const
     {
     }
 
     30% g++ -c q.cc
     q.cc:3: non-member function `void f()' cannot have `const' method qualifier
     31%