[Bug c++/55813] New: Poorly named/documented option Wctor-dtor-privacy

[Bug c++/55813] New: Poorly named/documented option Wctor-dtor-privacy

[harald at gigawatt dot nl]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55813

             Bug #: 55813
           Summary: Poorly named/documented option Wctor-dtor-privacy
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: harald@gigawatt.nl


The -Wctor-dtor-privacy option is documented as

`-Wctor-dtor-privacy (C++ only)'
     Warn when a class seems unusable, because all the constructors or
     destructors in a class are private and the class has no friends or
     public static member functions.

However, the option warns for more than just that:

class A { // warning: all member functions in class 'A' are private
    void f();
};

class B { // no warning
    void f() {}
public:
    B() {}
};

The documentation does not explain why a warning for A is issued, nor does it
explain why A is treated differently from B. The option's name suggests that no
warning should be generated for either of them, but I cannot tell what the
actual intended behaviour is, only that gcc has behaved this way since before
3.x.

[Bug c++/55813] Poorly named/documented option Wctor-dtor-privacy

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55813

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-02-27
         AssignedTo|unassigned at gcc dot       |paolo.carlini at oracle dot
                   |gnu.org                     |com
     Ever Confirmed|0                           |1

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-02-27 18:43:25 UTC ---
Mine.

[Bug c++/55813] Poorly named/documented option Wctor-dtor-privacy

[paolo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55813

--- Comment #2 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2013-02-28 10:01:04 UTC ---
Author: paolo
Date: Thu Feb 28 10:00:54 2013
New Revision: 196334

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=196334
Log:
2013-02-28  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/55813
    * doc/invoke.texi ([-Wctor-dtor-privacy]): Complete.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/doc/invoke.texi

[Bug c++/55813] Poorly named/documented option Wctor-dtor-privacy

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55813

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.8.0

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-02-28 10:03:03 UTC ---
Done.