re PR c++/13092 (Accepts invalid pointer-to-member conversion)

re PR c++/13092 (Accepts invalid pointer-to-member conversion)

	PR c++/13092
	* init.c (build_offset_ref): Build SCOPE_REF with non-null
	TREE_TYPE for non-dependent names.
	* typeck.c (build_x_unary_op): Handle non-dependent SCOPE_REF.
	* pt.c (type_dependent_expression_p): Handle SCOPE_REF with
	unknown_type_node as its TREE_TYPE.
	* cxx-pretty_print.c (pp_cxx_unqualified_id): Handle BASELINK.
	* error.c (dump_decl) <SCOPE_REF case>: Use pp_expression.
	(dump_expr) <SCOPE_REF case>: Likewise.

	* g++.dg/template/non-dependent7.C: New test.
	* g++.dg/template/non-dependent8.C: Likewise.
	* g++.dg/template/non-dependent9.C: Likewise.
	* g++.dg/template/non-dependent10.C: Likewise.

From-SVN: r84889