re PR fortran/78300 ([OOP] Failure to compile a F03 code with an optional dummy procedure argument)

2016-11-14  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/78300
	* resolve.c (resolve_procedure_interface): Properly handle CLASS-valued
	function results.

2016-11-14  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/78300
	* gfortran.dg/class_result_3.f90: New test.

From-SVN: r242392

gcc/fortran/ChangeLog

+2016-11-14  Janus Weil  <janus@gcc.gnu.org>
+
+	PR fortran/78300
+	* resolve.c (resolve_procedure_interface): Properly handle CLASS-valued
+	function results.
+
 2016-11-13  Janus Weil  <janus@gcc.gnu.org>
 
 	PR fortran/60952

gcc/fortran/resolve.c

@@ -214,27 +214,33 @@ resolve_procedure_interface (gfc_symbol *sym)
       if (ifc->result)
 	{
 	  sym->ts = ifc->result->ts;
+	  sym->attr.allocatable = ifc->result->attr.allocatable;
+	  sym->attr.pointer = ifc->result->attr.pointer;
+	  sym->attr.dimension = ifc->result->attr.dimension;
+	  sym->attr.class_ok = ifc->result->attr.class_ok;
+	  sym->as = gfc_copy_array_spec (ifc->result->as);
 	  sym->result = sym;
 	}
       else
-	sym->ts = ifc->ts;
+	{
+	  sym->ts = ifc->ts;
+	  sym->attr.allocatable = ifc->attr.allocatable;
+	  sym->attr.pointer = ifc->attr.pointer;
+	  sym->attr.dimension = ifc->attr.dimension;
+	  sym->attr.class_ok = ifc->attr.class_ok;
+	  sym->as = gfc_copy_array_spec (ifc->as);
+	}
       sym->ts.interface = ifc;
       sym->attr.function = ifc->attr.function;
       sym->attr.subroutine = ifc->attr.subroutine;
 
-      sym->attr.allocatable = ifc->attr.allocatable;
-      sym->attr.pointer = ifc->attr.pointer;
       sym->attr.pure = ifc->attr.pure;
       sym->attr.elemental = ifc->attr.elemental;
-      sym->attr.dimension = ifc->attr.dimension;
       sym->attr.contiguous = ifc->attr.contiguous;
       sym->attr.recursive = ifc->attr.recursive;
       sym->attr.always_explicit = ifc->attr.always_explicit;
       sym->attr.ext_attr |= ifc->attr.ext_attr;
       sym->attr.is_bind_c = ifc->attr.is_bind_c;
-      sym->attr.class_ok = ifc->attr.class_ok;
-      /* Copy array spec.  */
-      sym->as = gfc_copy_array_spec (ifc->as);
       /* Copy char length.  */
       if (ifc->ts.type == BT_CHARACTER && ifc->ts.u.cl)
 	{

gcc/testsuite/ChangeLog

+2016-11-14  Janus Weil  <janus@gcc.gnu.org>
+
+	PR fortran/78300
+	* gfortran.dg/class_result_3.f90: New test.
+
 2016-11-14  Prasad Ghangal  <prasad.ghangal@gmail.com>
 	Richard Biener  <rguenther@suse.de>
-    
+
     	* gcc.dg/gimplefe-1.c: New testcase.
     	* gcc.dg/gimplefe-2.c: Likewise.
     	* gcc.dg/gimplefe-3.c: Likewise.

gcc/testsuite/gfortran.dg/class_result_3.f90

+! { dg-do compile }
+!
+! PR 78300: [OOP] Failure to compile a F03 code with an optional dummy procedure argument
+!
+! Contributed by DIL <liakhdi@ornl.gov>
+
+  implicit none
+
+  type gfc_cont_elem_t
+  end type
+
+  contains
+
+    function gfc_copy_i() result(clone)
+      class(gfc_cont_elem_t), pointer:: clone
+    end
+
+    subroutine ContElemConstruct(copy_constr_func)
+      procedure(gfc_copy_i) :: copy_constr_func
+    end
+
+end