re PR fortran/78356 ([OOP] segfault allocating polymorphic variable with polymorphic component with allocatable component)

gcc/fortran/ChangeLog:

2016-11-16  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/78356
	* class.c (gfc_is_class_scalar_expr): Prevent taking an array ref for
	a component ref.
	* trans-expr.c (gfc_trans_assignment_1): Ensure a reference to the
	object to copy is generated, when assigning class objects.

gcc/testsuite/ChangeLog:

2016-11-16  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/78356
	* gfortran.dg/class_allocate_23.f08: New test.

From-SVN: r242490