[Bug c++/11094] New: incomplete static member breaks sizeof containing template class

[Bug c++/11094] New: incomplete static member breaks sizeof containing template class

[ncm@cantrip.org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11094

           Summary: incomplete static member breaks sizeof containing
                    template class
           Product: gcc
           Version: 3.2.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: ncm@cantrip.org
                CC: gcc-bugs@gcc.gnu.org
 GCC build triplet: *-*-*
  GCC host triplet: x86-*-linux
GCC target triplet: *-*-*

For

  template<typename T> 
    struct Foo
    {
        int c;
        static int s[];
    };

  template<typename T>
    int Foo<T>::s[sizeof(Foo<T>)];

  int* p = Foo<char>::s;

I get

$ gcc -c t.cc
t.cc: In instantiation of `Foo<char>':
t.cc:11:   instantiated from here
t.cc:9: `sizeof' applied to incomplete type `Foo<char>'
t.cc:9: creating array with size zero (`0')
t.cc:11: `s' is not a member of type `Foo<char>'

See also http://gcc.gnu.org/ml/libstdc++/2003-04/msg00045.html
and related discussion.

If this gets fixed, note that this bug may have been worked 
around in the libstdc++ implementation, probably in 3.4; grep for
_Rep_base in include/bits/basic_string.h.



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[Bug c++/11094] incomplete static member breaks sizeof containing template class

[bangerth@dealii.org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11094



------- Additional Comments From bangerth@dealii.org  2003-06-04 23:42 -------
See this thread
    http://gcc.gnu.org/ml/gcc/2003-06/msg00386.htmlfor some clues about the
validity of the code. FWIW,
icc accepts the code.

W.



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[Bug c++/11094] incomplete static member breaks sizeof containing template class

[ncm@cantrip.org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11094



------- Additional Comments From ncm@cantrip.org  2003-06-05 20:10 -------
This was discussed on the ISO C++ core issues list
in messages 9868, 9869, and 9870.




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[Bug c++/11094] incomplete static member breaks sizeof containing template class

[giovannibajo@libero.it]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11094


giovannibajo@libero.it changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-06-10 10:43:40
               date|                            |


------- Additional Comments From giovannibajo@libero.it  2003-06-10 10:43 -------
-> suspended

[Bug c++/11094] incomplete static member breaks sizeof containing template class

[giovannibajo@libero.it]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11094


giovannibajo@libero.it changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |SUSPENDED


------- Additional Comments From giovannibajo@libero.it  2003-06-10 10:44 -------
This will stay suspended until the core working group comes to an agreement.

[Bug c++/11094] incomplete static member breaks sizeof containing template class

[pinskia at physics dot uc dot edu]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11094


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4                         |---

[Bug c++/11094] incomplete static member breaks sizeof containing template class

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
   Last reconfirmed|2004-02-08 05:22:41         |2004-04-27 01:22:57
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11094

[Bug c++/11094] incomplete static member breaks sizeof containing template class

[jason at gcc dot gnu dot org]

-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jason at gcc dot gnu dot org
                   |dot org                     |
             Status|SUSPENDED                   |ASSIGNED
   Last reconfirmed|2005-12-11 23:09:54         |2009-03-03 22:08:40
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11094

[Bug c++/11094] incomplete static member breaks sizeof containing template class

[jason at gcc dot gnu dot org]

------- Comment #5 from jason at gcc dot gnu dot org  2009-03-03 21:39 -------
This is core issue 408, which I'm supposed to be drafting.


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11094