[Bug c++/11067] New: [3.3/3.4 regression] Strange warning with abstract virtual inline function

[Bug c++/11067] New: [3.3/3.4 regression] Strange warning with abstract virtual inline function

[reichelt@gcc.gnu.org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11067

           Summary: [3.3/3.4 regression] Strange warning with abstract
                    virtual inline function
           Product: gcc
           Version: 3.3.1
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P4
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: reichelt@gcc.gnu.org
                CC: gcc-bugs@gcc.gnu.org
  GCC host triplet: i686-pc-linux-gnu

Compiling the following code snippet, I get a strange warning:

-------------------------------------------------
struct A
{
    virtual inline void foo() const=0;
    void bar() { foo(); }
};
-------------------------------------------------

The warning reads:
warn.cc:3: warning: inline function `virtual void A::foo() const' used but 
   never defined

The keyword "inline" doesn't make much sense, but the warning is confusing IMHO.
The warning was introduced in gcc 3.3, so I rate this as a regression.



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[Bug c++/11067] [3.3/3.4 regression] Strange warning with abstract virtual inline function

[pinskia@physics.uc.edu]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11067


pinskia@physics.uc.edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-06-02 18:45:42
               date|                            |


------- Additional Comments From pinskia@physics.uc.edu  2003-06-02 18:45 -------
One of the reason the warning was introduced in 3.3 was because -Winline was not say 
when something was not inlined, now it looks like it is over warning.  It is most likely 
connected with bug 10929.



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[Bug c++/11067] [3.3/3.4 regression] Strange warning with abstract virtual inline function

[pinskia@physics.uc.edu]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11067


pinskia@physics.uc.edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4                         |3.3.1

[Bug c++/11067] [3.3/3.4 regression] Strange warning with abstract virtual inline function

[pinskia at physics dot uc dot edu]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11067


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pinskia at physics dot uc
                   |dot org                     |dot edu


------- Additional Comments From pinskia at physics dot uc dot edu  2003-06-22 02:47 -------
I have a small patch  which fixes this, will post soon.

[Bug c++/11067] [3.3/3.4 regression] Strange warning with abstract virtual inline function

[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=11067


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2003-06-02 18:45:42         |2003-06-22 02:47:56
               date|                            |

[Bug c++/11067] [3.3/3.4 regression] Strange warning with abstract virtual inline function

[janis187 at us dot ibm dot com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11067



------- Additional Comments From janis187 at us dot ibm dot com  2003-06-23 16:00 -------
The regression in 11067 was introduced/exposed by this patch (I see that
Andrew has a patch, but this might still be useful):

--- gcc/gcc/cp/ChangeLog ---

> 2002-12-26  Nathan Sidwell  <nathan@codesourcery.com>
>
>       PR c++/4803
>       * decl2.c (mark_used): Defer inline functions.
>       (finish_file): Merge deferred_fns loops. Check all used
>       inline functions have a definition.
>       * method.c (make_thunk): Thunks are not inline.

[Bug c++/11067] [3.3/3.4 regression] Strange warning with abstract virtual inline function

[bangerth at dealii dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11067



------- Additional Comments From bangerth at dealii dot org  2003-06-23 23:37 -------
The patch is here:
  http://gcc.gnu.org/ml/gcc-patches/2003-06/msg02517.html

However, I think it's wrong, see
  http://gcc.gnu.org/ml/gcc-patches/2003-06/msg02519.html
  http://gcc.gnu.org/ml/gcc-patches/2003-06/msg02543.html

W.

[Bug c++/11067] [3.3/3.4 regression] Strange warning with abstract virtual inline function

[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=11067


pinskia at physics dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |WONTFIX


------- Additional Comments From pinskia at physics dot uc dot edu  2003-06-24 21:18 -------
The warning is right so closing as not going to be fixed.