[Bug fortran/41585] New: [OOP] Reject CLASS(T) as component of "TYPE :: T"

[Bug fortran/41585] New: [OOP] Reject CLASS(T) as component of "TYPE :: T"

[burnus at gcc dot gnu dot org]

type t
  integer :: i
  class(t), allocatable :: foo
end type t

In Fortran 2003 this is invalid to have CLASS(T) in the same TYPE as the one
being defined. I think Fortran 2008 allows this, but as currently, deallocating
also does not work, I would simply reject it.


C438 (R440) If the POINTER attribute is not specified for a component, the
declaration-type-spec in the component-def-stmt shall be CLASS(*) or shall
specify an intrinsic type or a previously defined derived type.

C439 (R440) If the POINTER attribute is specified for a component, the
declaration-type-spec in the component-def-stmt shall be CLASS(*) or shall
specify an intrinsic type or any accessible derived type including the type
being defined.


-- 
           Summary: [OOP] Reject CLASS(T) as component of "TYPE :: T"
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Keywords: rejects-valid
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41585

[Bug fortran/41585] [OOP] Reject CLASS(T) as component of "TYPE :: T"

[burnus at gcc dot gnu dot org]

------- Comment #1 from burnus at gcc dot gnu dot org  2009-10-05 13:27 -------
See also PR 41586.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41585

[Bug fortran/41585] [OOP] Reject CLASS(T) as component of "TYPE :: T"

[janus at gcc dot gnu dot org]

------- Comment #2 from janus at gcc dot gnu dot org  2009-10-07 21:50 -------
This can be fixed by:

Index: gcc/fortran/decl.c
===================================================================
--- gcc/fortran/decl.c  (Revision 152525)
+++ gcc/fortran/decl.c  (Arbeitskopie)
@@ -1465,7 +1465,7 @@ build_struct (const char *name, gfc_charlen *cl, g

   /* If the current symbol is of the same derived type that we're
      constructing, it must have the pointer attribute.  */
-  if (current_ts.type == BT_DERIVED
+  if ((current_ts.type == BT_DERIVED || current_ts.type == BT_CLASS)
       && current_ts.u.derived == gfc_current_block ()
       && current_attr.pointer == 0)
     {


-- 

janus at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |janus at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-10-07 21:50:03
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41585

[Bug fortran/41585] [OOP] Reject CLASS(T) as component of "TYPE :: T"

[janus at gcc dot gnu dot org]

------- Comment #3 from janus at gcc dot gnu dot org  2009-10-09 22:35 -------
Subject: Bug 41585

Author: janus
Date: Fri Oct  9 22:35:11 2009
New Revision: 152608

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=152608
Log:
2009-10-09  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/41585
        * decl.c (build_struct): Bugfix for CLASS components.


2009-10-09  Janus Weil  <janus@gcc.gnu.org>

        PR fortran/41585
        * gfortran.dg/class_2.f03: Extended test case.

Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/decl.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gfortran.dg/class_2.f03


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41585

[Bug fortran/41585] [OOP] Reject CLASS(T) as component of "TYPE :: T"

[janus at gcc dot gnu dot org]

------- Comment #4 from janus at gcc dot gnu dot org  2009-10-09 22:39 -------
Fixed with r152608. Closing.


-- 

janus at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41585