PR c++/18073

	PR c++/18073
	PR c++/10841
	* cp-tree.h (convert_to_base): Change prototype.
	(build_ptrmemfunc): Likewise.
	(convert_ptrmem): New function.
	* call.c (struct conversion): Adjust documentation for base_p.
	(standard_conversion): Set base_p for ck_pmem conversions as
	appropriate.
	(convert_like_real): Use convert_to_base for ck_pmem and ck_ptr
	conversions.
	* class.c (convert_to_base): Handle both pointers and objects.
	Add nonnull parameter.
	(build_vfield_ref): Adjust call to convert_to_base.
	* cvt.c (cp_convert_to_pointer): Adjust call to build_ptrmemfunc.
	(convert_force): Likewise.
	* typeck.c (build_unary_op): Likewise.
	(convert_ptrmem): New function.
	(build_static_cast_1): Use it.
	(build_reinterpret_cast): Allow conversions to vector types.
	(get_delta_difference): Add c_cast_p parameter.
	(build_ptrmemfunc): Likewise.  Adjust calls to
	get_delta_difference.

	PR c++/10841
	* g++.dg/conversion/cast1.C: New test.
	* g++.dg/overload/pmf1.C: Adjust error marker.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@89403 138bc75d-0d04-0410-961f-82ee72b054a4