re PR fortran/43366 ([OOP][F08] Intrinsic assign to polymorphic variable)

re PR fortran/43366 ([OOP][F08] Intrinsic assign to polymorphic variable)

gcc/fortran/ChangeLog:

2016-10-22  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/43366
	PR fortran/51864
	PR fortran/57117
	PR fortran/61337
	PR fortran/61376
	* primary.c (gfc_expr_attr): For transformational functions on classes
	get the attrs from the class argument.
	* resolve.c (resolve_ordinary_assign): Remove error message due to
	feature implementation.  Rewrite POINTER_ASSIGNS to ordinary ones when
	the right-hand side is scalar class object (with some restrictions).
	* trans-array.c (trans_array_constructor): Create the temporary from
	class' inner type, i.e., the derived type.
	(build_class_array_ref): Add support for class array's storage of the
	class object or the array descriptor in the decl saved descriptor.
	(gfc_conv_expr_descriptor): When creating temporaries for class objects
	add the class object's handle into the decl saved descriptor.
	(structure_alloc_comps): Use the common way to get the _data component.
	(gfc_is_reallocatable_lhs): Add notion of allocatable class objects.
	* trans-expr.c (gfc_find_and_cut_at_last_class_ref): Remove the only ref
	only when the expression's type is BT_CLASS.
	(gfc_trans_class_init_assign): Correctly handle class arrays.
	(gfc_trans_class_assign): Joined into gfc_trans_assignment_1.
	(gfc_conv_procedure_call): Support for class types as arguments.
	(trans_get_upoly_len): For unlimited polymorphics retrieve the _len
	component's tree.
	(trans_class_vptr_len_assignment): Catch all ways to assign the _vptr
	and _len components of a class object correctly.
	(pointer_assignment_is_proc_pointer): Identify assignments of
	procedure pointers.
	(gfc_trans_pointer_assignment): Enhance support for class object pointer
	assignments.
	(gfc_trans_scalar_assign): Removed assert.
	(trans_class_assignment): Assign to a class object.
	(gfc_trans_assignment_1): Treat class objects correctly.
	(gfc_trans_assignment): Propagate flags to trans_assignment_1.
	* trans-stmt.c (gfc_trans_allocate): Use gfc_trans_assignment now
	instead of copy_class_to_class.
	* trans-stmt.h: Function prototype removed.
	* trans.c (trans_code): Less special casing for class objects.
	* trans.h: Added flags to gfc_trans_assignment () prototype.

gcc/testsuite/ChangeLog:

2016-10-22  Andre Vehreschild  <vehre@gcc.gnu.org>

        Forgot to add on original commit.
        * gfortran.dg/coarray_alloc_comp_2.f08: New test.

2016-10-22  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/43366
	PR fortran/57117
	PR fortran/61337
	* gfortran.dg/alloc_comp_class_5.f03: New test.
	* gfortran.dg/class_allocate_21.f90: New test.
	* gfortran.dg/class_allocate_22.f90: New test.
	* gfortran.dg/realloc_on_assign_27.f08: New test.

From-SVN: r241439