2013-01-06  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/PR53876
	PR fortran/PR54990
	PR fortran/PR54992
	* trans-array.c (build_array_ref): Check the TYPE_CANONICAL
	to see if it is GFC_CLASS_TYPE_P.
	* trans-expr.c (gfc_get_vptr_from_expr): The same.
	(gfc_conv_class_to_class): If the types are not the same,
	cast parmese->expr to the type of ctree.
	* trans-types.c (gfc_get_derived_type): GFC_CLASS_TYPE_P of
	CLASS components must be set.

2013-01-06  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/PR53876
	PR fortran/PR54990
	PR fortran/PR54992
	* gfortran.dg/class_array_15.f03: New test.

From-SVN: r194953