[Bug c++/55942] New: [C++11] sorry, unimplemented: calling a member function of the object being constructed in a constant expression

[Bug c++/55942] New: [C++11] sorry, unimplemented: calling a member function of the object being constructed in a constant expression

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55942

             Bug #: 55942
           Summary: [C++11] sorry, unimplemented: calling a member
                    function of the object being constructed in a constant
                    expression
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Keywords: FIXME
          Severity: minor
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: redi@gcc.gnu.org


struct A
{
    constexpr explicit A(bool b) : o{flip(b)} { }

    constexpr bool flip(bool b) { return !b; }

    bool o;
};

ce.cc: In constructor 'constexpr A::A(bool)':
ce.cc:3:49: sorry, unimplemented: calling a member function of the object being
constructed in a constant expression
     constexpr explicit A(bool b) : o{flip(b)} { }
                                                 ^

I found this by accident because I meant to define A::flip as a static member
function, which would have worked. Omitting the static gives the "sorry" above.

[Bug c++/55942] [C++11] sorry, unimplemented: calling a member function of the object being constructed in a constant expression

[mattyclarkson at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55942

Matt Clarkson <mattyclarkson at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mattyclarkson at gmail dot
                   |                            |com

--- Comment #1 from Matt Clarkson <mattyclarkson at gmail dot com> 2013-05-07 17:04:11 UTC ---
I just came across this too.

[Bug c++/55942] [C++11] sorry, unimplemented: calling a member function of the object being constructed in a constant expression

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55942

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-05-07
     Ever Confirmed|0                           |1

[Bug c++/55942] [C++11] sorry, unimplemented: calling a member function of the object being constructed in a constant expression

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55942

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Recently fixed, I'm adding the testcase and closing the bug.

[Bug c++/55942] [C++11] sorry, unimplemented: calling a member function of the object being constructed in a constant expression

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55942

--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Tue Nov 18 16:02:58 2014
New Revision: 217719

URL: https://gcc.gnu.org/viewcvs?rev=217719&root=gcc&view=rev
Log:
2014-11-18  Paolo Carlini  <paolo.carlini@oracle.com>

    PR c++/55942
    * g++.dg/cpp0x/constexpr-55942.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-55942.C
Modified:
    trunk/gcc/testsuite/ChangeLog

[Bug c++/55942] [C++11] sorry, unimplemented: calling a member function of the object being constructed in a constant expression

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55942

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |5.0

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Done.