[Bug c++/12933] New: template parameter member function pointer not displayed

[Bug c++/12933] New: template parameter member function pointer not displayed

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12933

           Summary: template parameter member function pointer not
                    displayed
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned@sourceware.org
        ReportedBy: jan.kratochvil@redhat.com


struct S {
  void m (int x) {}
};
template<int X,void (S::*F) (int)>
struct K {
  void f () { S s; (s.*F) (5); }
};
int main () {
  K<1,&S::m> k;
  k.f ();
}

#1  0x000000000040051b in K<1, &(S::m)>::f (this=0x7fffffffdcaf) at
tmplmember.C:6
6      void f () { S s; (s.*F) (5); }
(gdb) p F
$1 = <optimized out>
(gdb) p &F
Can't take address of "F" which isn't an lvalue.
(gdb) ptype F
type = void (S::*)(S * const, int)

It displays the type but it could display something like:
(gdb) p F
$1 = {void (S * const, int)} 0x4004f0 <S::m(int)>

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[Bug c++/12933] template parameter member function pointer not displayed

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12933

Tom Tromey <tromey at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at redhat dot com

--- Comment #1 from Tom Tromey <tromey at redhat dot com> 2011-08-04 14:37:55 UTC ---
I'm surprised that ptype works here.
Anyway it is a gcc bug:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49366

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[Bug c++/12933] template parameter member function pointer not displayed

[ssbssa at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=12933

Hannes Domani <ssbssa at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ssbssa at sourceware dot org

--- Comment #2 from Hannes Domani <ssbssa at sourceware dot org> ---
(In reply to Tom Tromey from comment #1)
> I'm surprised that ptype works here.
> Anyway it is a gcc bug:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49366

The gcc bug was fixed 4 years ago, and it works fine in gdb now:

(gdb) p F
$1 = (void (S::*)(S * const, int)) 0x402b50 <S::m(int)>
(gdb) p &f
$2 = (void (*)(K<1, &S::m> * const)) 0x402b20 <K<1, &S::m>::f()>

So can this be closed?

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[Bug c++/12933] template parameter member function pointer not displayed

[jan.kratochvil at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=12933

Jan Kratochvil <jan.kratochvil at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jan.kratochvil at redhat dot com
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #3 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Yes, fixed probably in GCC.

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