2010-06-11 Paul Thomas <pault@gcc.gnu.org>

	PR fortran/42051
	PR fortran/43896
	* trans-expr.c (gfc_conv_derived_to_class): Handle array-valued
	functions with CLASS formal arguments.


2010-06-11  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/42051
	PR fortran/43896
	* gfortran.dg/class_23.f03: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@160622 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/fortran/ChangeLog

+2010-06-11  Paul Thomas  <pault@gcc.gnu.org>
+
+	PR fortran/42051
+	PR fortran/43896
+	* trans-expr.c (gfc_conv_derived_to_class): Handle array-valued
+	functions with CLASS formal arguments.
+
 2010-06-10  Janus Weil  <janus@gcc.gnu.org>
 
 	PR fortran/44207

gcc/fortran/trans-expr.c

@@ -2492,12 +2492,14 @@ gfc_conv_derived_to_class (gfc_se *parmse, gfc_expr *e,
   ss = gfc_walk_expr (e);
   if (ss == gfc_ss_terminator)
     {
+      parmse->ss = NULL;
       gfc_conv_expr_reference (parmse, e);
       tmp = fold_convert (TREE_TYPE (ctree), parmse->expr);
       gfc_add_modify (&parmse->pre, ctree, tmp);
     }
   else
     {
+      parmse->ss = ss;
       gfc_conv_expr (parmse, e);
       gfc_add_modify (&parmse->pre, ctree, parmse->expr);
     }

gcc/testsuite/ChangeLog

+2010-06-11  Paul Thomas  <pault@gcc.gnu.org>
+
+	PR fortran/42051
+	PR fortran/43896
+	* gfortran.dg/class_23.f03: New test.
+
 2010-06-11  Jan Hubicka  <jh@suse.cz>
 
 	* gcc.dg/ipa/pure-const-2.c: New testcase.

gcc/testsuite/gfortran.dg/class_23.f03

+! { dg-do compile }
+!
+! PR 42051: [OOP] ICE on array-valued function with CLASS formal argument
+!
+! Original test case by Damian Rouson <damian@rouson.net>
+! Modified by Janus Weil <janus@gcc.gnu.org>
+
+  type grid
+  end type 
+
+contains
+
+  function return_x(this) result(this_x)
+    class(grid) :: this
+    real  ,dimension(1) :: this_x
+  end function
+
+  subroutine output()
+    type(grid) :: mesh
+    real ,dimension(1) :: x
+    x = return_x(mesh)
+  end subroutine
+
+end