re PR fortran/69398 ([OOP] ICE on class with duplicate dimension attribute specified)

2019-06-19  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/69398
	* decl.c (attr_decl): Check for duplicate DIMENSION attribute for a
	CLASS entity.

2019-06-19  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/69398
	* gfortran.dg/pr69398.f90: New test.

From-SVN: r272481

gcc/fortran/ChangeLog

 2019-06-19  Steven G. Kargl  <kargl@gcc.gnu.org>
 
+	PR fortran/69398
+	* decl.c (attr_decl): Check for duplicate DIMENSION attribute for a
+	CLASS entity.
+
+2019-06-19  Steven G. Kargl  <kargl@gcc.gnu.org>
+
 	PR fortran/87907
 	* resolve.c (resolve_contained_fntype): Do not dereference a NULL
 	pointer.

gcc/fortran/decl.c

@@ -8372,6 +8372,15 @@ attr_decl1 (void)
      to the first component, or '_data' field.  */
   if (sym->ts.type == BT_CLASS && sym->ts.u.derived->attr.is_class)
     {
+      /* gfc_set_array_spec sets sym->attr not CLASS_DATA(sym)->attr.  Check
+	 for duplicate attribute here.  */
+      if (CLASS_DATA(sym)->attr.dimension == 1 && as)
+	{
+	  gfc_error ("Duplicate DIMENSION attribute at %C");
+	  m = MATCH_ERROR;
+	  goto cleanup;
+	}
+
       if (!gfc_copy_attr (&CLASS_DATA(sym)->attr, &current_attr, &var_locus))
 	{
 	  m = MATCH_ERROR;

gcc/testsuite/ChangeLog

 2019-06-19  Steven G. Kargl  <kargl@gcc.gnu.org>
 
+	PR fortran/69398
+	* gfortran.dg/pr69398.f90: New test.
+
+2019-06-19  Steven G. Kargl  <kargl@gcc.gnu.org>
+
 	PR fortran/87907
 	* gfortran.dg/pr87907.f90: New testcase.
 

gcc/testsuite/gfortran.dg/pr69398.f90

+! { dg-do compile }
+! PR fortran/69398
+! Contributed by Gerhard Steinmetz
+program p
+   type t
+   end type
+   class(t), allocatable :: z(:)
+   target :: z(:)    ! { dg-error "Duplicate DIMENSION attribute" }
+   allocate (z(2))
+end
+