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* [Bug fortran/51610] New: [OOP] Class container does not properly handle POINTER and TARGET
@ 2011-12-18 18:34 burnus at gcc dot gnu.org
  2013-06-11 19:16 ` [Bug fortran/51610] " dominiq at lps dot ens.fr
                   ` (5 more replies)
  0 siblings, 6 replies; 7+ messages in thread
From: burnus at gcc dot gnu.org @ 2011-12-18 18:34 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51610

             Bug #: 51610
           Summary: [OOP] Class container does not properly handle POINTER
                    and TARGET
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid, rejects-valid
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: burnus@gcc.gnu.org
                CC: janus@gcc.gnu.org, pault@gcc.gnu.org
            Blocks: 51605


The following program compiles - but it is invalid.

1. The TARGET attribute is required for "b" and "c"
   But if one tries to set it, one gets an error.
Expected: One can mark them as TARGET and without one gets an error
          for the CALL.

2. The "ptr => x" is invalid as "x" is not TARGET but no error is printed.
3. If one swaps the "x" and the "z" lines, one gets the error:
          ptr => x
          1
  Error: Non-POINTER in pointer association context (pointer assignment)
But one get also an error for the "ptr => y" and "ptr => z" lines.


Related is PR 51605: SELECT TYPE's associate-name needs to set TARGET attribute


       type t
       end type t
       class(t), allocatable :: a(:), b(:), c(:)
! Bogus error: Error: Duplicate TARGET attribute specified
!       target :: a, b, c
       allocate (a(1), b(1), c(1))
                       ! Requires: TARGET attribute - 
       call test(a, b, c) !   possibly not correctly diagnosed
     contains
       subroutine test(x, y, z)
        class(t), pointer, intent(in) :: z(:)
        class(t), target :: y(3)
        class(t) :: x(3)
        class(t), pointer :: ptr(:)
        ptr => x ! Invalid: "x" is not a TARGET
        ptr => y ! Valid: "x" is a TARGET
        ptr => z ! Valid: "z" is a POINTER
       end subroutine
     end


^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2023-03-06 17:18 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2011-12-18 18:34 [Bug fortran/51610] New: [OOP] Class container does not properly handle POINTER and TARGET burnus at gcc dot gnu.org
2013-06-11 19:16 ` [Bug fortran/51610] " dominiq at lps dot ens.fr
2013-06-17 15:07 ` dominiq at lps dot ens.fr
2013-12-14 20:15 ` dominiq at lps dot ens.fr
2013-12-14 22:25 ` janus at gcc dot gnu.org
2013-12-17 16:19 ` dominiq at lps dot ens.fr
2023-03-06 17:18 ` anlauf at gcc dot gnu.org

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