call.c (convert_default_arg): Check for unprocessed DEFAULT_ARG.

call.c (convert_default_arg): Check for unprocessed DEFAULT_ARG.

cp:
	* call.c (convert_default_arg): Check for unprocessed
	DEFAULT_ARG.
	* cp-tree.h (replace_defarg): Move to spew.c.
	(maybe_snarf_defarg, add_defarg_fn, do_pending_defargs): Move to
	spew.c, which is where they really are.
	(done_pending_defargs): Declare.
	(unprocessed_defarg_fn): Declare.
	* decl.c (replace_defarg): Move to spew.c
	* parse.y (structsp): Call done_pending_defargs.
	* spew.c (defarg_fns): Rearrange list structure.
	(defarg_fnsdone): New static variable.
	(defarg_depfns): New static variable.
	(init_spew): Adjust.
	(add_defarg_fn): Store the type in TREE_TYPE.
	(do_pending_defargs): Detect and deal with ordering constraints
	and circularity.
	(done_pending_defargs): New function.
	(unprocessed_defarg_fn): New function.
	(replace_defarg): Moved from decl.c. Robustify. Don't save
	if circularity detected.
testsuite:
	* g++.old-deja/g++.other/defarg7.C: New test.
	* g++.old-deja/g++.other/defarg8.C: New test.

From-SVN: r38903