c++/2019: Wrong line number in warning

[carlo@alinoe.com]

>Number:         2019
>Category:       c++
>Synopsis:       Wrong line number in warning
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Feb 18 16:06:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     carlo@alinoe.com
>Release:        gcc version 2.97 20010207 (experimental)
>Organization:
>Environment:
irrelevant
>Description:
The following code snippet:

namespace N {
  void foo(void);
}
 
void foo(int);
 
namespace N {
  class A {
  public:
    enum e { x };
    friend void N::foo(void);
    //friend void foo(e);
    friend void foo(void);       // line 13
  };
}
 
int main(void)
{
  return 0;
}

Produces:
20010218.cc:13: warning: `void N::foo()' is already a friend of class `N::A'
20010218.cc:13: warning: previous friend declaration of `void N::foo()'

The latter should be line 11, not 13.
>How-To-Repeat:

>Fix:

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