re PR fortran/78641 ([OOP] ICE on polymorphic allocatable function in array constructor)

2017-11-05  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/78641
	* resolve.c (resolve_ordinary_assign): Do not add the _data
	component for class valued array constructors being assigned
	to derived type arrays.
	* trans-array.c (gfc_trans_array_ctor_element): Take the _data
	of class valued elements for assignment to derived type arrays.

2017-11-05  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/78641
	* gfortran.dg/class_66.f90: New test.

From-SVN: r254428

gcc/fortran/ChangeLog

 2017-11-05  Paul Thomas  <pault@gcc.gnu.org>
 
+	PR fortran/78641
+	* resolve.c (resolve_ordinary_assign): Do not add the _data
+	component for class valued array constructors being assigned
+	to derived type arrays.
+	* trans-array.c (gfc_trans_array_ctor_element): Take the _data
+	of class valued elements for assignment to derived type arrays.
+
+2017-11-05  Paul Thomas  <pault@gcc.gnu.org>
+
 	PR fortran/81447
 	PR fortran/82783
 	* resolve.c (resolve_component): There is no need to resolve

gcc/fortran/resolve.c

@@ -10324,7 +10324,8 @@ resolve_ordinary_assign (gfc_code *code, gfc_namespace *ns)
 
   /* Assign the 'data' of a class object to a derived type.  */
   if (lhs->ts.type == BT_DERIVED
-      && rhs->ts.type == BT_CLASS)
+      && rhs->ts.type == BT_CLASS
+      && rhs->expr_type != EXPR_ARRAY)
     gfc_add_data_component (rhs);
 
   bool caf_convert_to_send = flag_coarray == GFC_FCOARRAY_LIB

gcc/fortran/trans-array.c

@@ -1580,6 +1580,17 @@ gfc_trans_array_ctor_element (stmtblock_t * pblock, tree desc,
 	    }
 	}
     }
+  else if (GFC_CLASS_TYPE_P (TREE_TYPE (se->expr))
+	   && !GFC_CLASS_TYPE_P (gfc_get_element_type (TREE_TYPE (desc))))
+    {
+      /* Assignment of a CLASS array constructor to a derived type array.  */
+      if (expr->expr_type == EXPR_FUNCTION)
+	se->expr = gfc_evaluate_now (se->expr, pblock);
+      se->expr = gfc_class_data_get (se->expr);
+      se->expr = build_fold_indirect_ref_loc (input_location, se->expr);
+      se->expr = fold_convert (TREE_TYPE (tmp), se->expr);
+      gfc_add_modify (&se->pre, tmp, se->expr);
+    }
   else
     {
       /* TODO: Should the frontend already have done this conversion?  */

gcc/testsuite/ChangeLog

 2017-11-05  Paul Thomas  <pault@gcc.gnu.org>
 
+	PR fortran/78641
+	* gfortran.dg/class_66.f90: New test.
+
+2017-11-05  Paul Thomas  <pault@gcc.gnu.org>
+
 	PR fortran/81447
 	* gfortran.dg/class_65.f90: New test.
 	* gfortran.dg/alloc_comp_basics_1.f90: Increase builtin_free

gcc/testsuite/gfortran.dg/class_66.f90

+! { dg- do run }
+!
+! Test the fix for PR78641 in which an ICE occured on assignment
+! of a class array constructor to a derived type array.
+!
+! Contributed by Damian Rouson  <damian@sourceryinstitute.org>
+!
+  implicit none
+  type foo
+    integer :: i = 99
+  end type
+  type(foo) :: bar(4)
+  class(foo), allocatable :: barfoo
+
+  allocate(barfoo,source = f(11))
+  bar = [f(33), [f(22), barfoo], f(1)]
+  if (any (bar%i .ne. [33, 22, 11, 1])) call abort
+  deallocate (barfoo)
+
+contains
+
+  function f(arg) result(foobar)
+    class(foo), allocatable :: foobar
+    integer :: arg
+    allocate(foobar,source = foo(arg))
+  end function
+
+end program