[Bug fortran/48428] New: gfortran internal error

[Bug fortran/48428] New: gfortran internal error

[kristopher.kuhlman at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48428

           Summary: gfortran internal error
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: kristopher.kuhlman@gmail.com


Created attachment 23864
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23864
reduced program fortran code that triggers the internal error

I have reduced a fortran program to the attached test case that triggers the
following internal error:

$ gfortran mio_component_ref_error.f90
mio_component_ref_error.f90:45.41:

    use elliptical_elements, only : line 
                                         1
Internal Error at (1):
mio_component_ref(): Component not found

This happens using gfortran 4.5.1, 4.6.0, and the trunk build from yesterday
(4.7).  

The error goes away if you copy the line() function from the
elliptical_elements module into the the solution_mod module and comment out the
use statement on line 45.

Maybe this bug is related to bug 47601?  I am experiencing this problem in
64-bit Ubuntu Linux.

--

I don't know if the following tidbit helps, but while I was cutting the program
down to this test case, I briefly experienced the following different error at
the same location when I eliminated some of the extends() dependencies of one
type on another in the type_definitions module.  I can't seem to reproduce this
different error anymore, though.

gfortran -c  -o solution.o solution.f90
solution.f90:10.41:

    use elliptical_elements, only : line 
                                         1
Internal Error at (1):
free_pi_tree(): Unresolved fixup

[Bug fortran/48428] [OOP] ICE at mio_component_ref() / free_pi_tree() - module read issues?

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48428

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-04-04 09:36:03 UTC ---
This pr looks like a duplicate of pr47601.

[Bug fortran/48428] [OOP] ICE at mio_component_ref() / free_pi_tree() - module read issues?

[mikael at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48428

Mikael Morin <mikael at gcc dot gnu.org> changed:

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

--- Comment #2 from Mikael Morin <mikael at gcc dot gnu.org> 2011-04-04 12:54:15 UTC ---
(In reply to comment #0)
> I don't know if the following tidbit helps, but while I was cutting the program
> down to this test case, I briefly experienced the following different error at
> the same location when I eliminated some of the extends() dependencies of one
> type on another in the type_definitions module.  I can't seem to reproduce this
> different error anymore, though.
> 
> gfortran -c  -o solution.o solution.f90
> solution.f90:10.41:
> 
>     use elliptical_elements, only : line 
>                                          1
> Internal Error at (1):
> free_pi_tree(): Unresolved fixup

This is PR47546, which was closed after the error reported vanished.
Can you reopen it and provide a case triggering it if you can reproduce again?

(In reply to comment #1)
> This pr looks like a duplicate of pr47601.
Indeed, and the testcase matches the same pattern (use-associated extended
derived-type component needed in function interface).

*** This bug has been marked as a duplicate of bug 47601 ***