[Bug fortran/59525] New: Inheritance problems

[Bug fortran/59525] New: Inheritance problems

[sarantis.pantazis at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59525

            Bug ID: 59525
           Summary: Inheritance problems
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: sarantis.pantazis at gmail dot com

I have some problems with inheritance.
In particular, I can not allocate an allocatable class variable to a child type
(the extra components are not recognized by the compiler).

Attached is a minimal working example.
The error message is the following:

testInheritance.f08:25.23:
write(*,*) bla%i, bla%j
Error: 'j' at (1) is not a member of the 'mytype' structure

[Bug fortran/59525] Inheritance problems

[sarantis.pantazis at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59525

--- Comment #1 from Sarantis Pantazis <sarantis.pantazis at gmail dot com> ---
Created attachment 31446
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31446&action=edit
Minimal working example

[Bug fortran/59525] Inheritance problems

[janus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59525

janus at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|                            |janus at gcc dot gnu.org
         Resolution|---                         |INVALID

--- Comment #2 from janus at gcc dot gnu.org ---
(In reply to Sarantis Pantazis from comment #0)
> I have some problems with inheritance.

What you describe is not a bug in the gfortran compiler, but in your
understanding of how inheritance works.


> testInheritance.f08:25.23:
> write(*,*) bla%i, bla%j
> Error: 'j' at (1) is not a member of the 'mytype' structure

This error is perfectly fine. Your code is not valid Fortran.

[Bug fortran/59525] Inheritance problems

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59525

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu.org

--- Comment #3 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to janus from comment #2)
> (In reply to Sarantis Pantazis from comment #0)
> > I have some problems with inheritance.
> 
> What you describe is not a bug in the gfortran compiler, but in your
> understanding of how inheritance works.

To give a hit:

> > write(*,*) bla%i, bla%j
> > Error: 'j' at (1) is not a member of the 'mytype' structure

bla%j is not part of mytype. You need to use "select type" to access it - as
you did in "subroutine setbla"