* decl.c (grokdeclarator): Keep a decl with error type.
	(grokfield, grokbitfield): Likewise.
	* pt.c (instantiate_class_template_1): Likewise.
	(tsubst_decl): Drop redundant error.
	* class.c (walk_subobject_offsets): Handle erroneous fields.
	* typeck2.c (process_init_constructor_record): Likewise.

From-SVN: r199779