cp-tree.def (FUNCTION_NAME): New tree node.

cp-tree.def (FUNCTION_NAME): New tree node.

	* cp-tree.def (FUNCTION_NAME): New tree node.
	* cp-tree.h (current_function_name_declared): Tweak documentation.
	(lang_decl_flags): Add pretty_function_p, adjust dummy.
	(DECL_PRETTY_FUNCTION_P): New macro.
	* decl.c (cp_finish_decl): Handle declarations of __FUNCTION__,
	etc., in a template function.  Use at_function_scope_p instead of
	expanding it inline.
	* pt.c (tsubst_decl): Handle DECL_PRETTY_FUNCTION_P declarations
	specially.
	(tsubst): Handle FUNCTION_NAME.
	(tsubst_copy): Likewise.
	(instantiate_decl): Prevent redeclarations of __PRETTY_FUNCTION__,
	etc. in instantiation.
	* semantics.c (begin_compound_stmt): Declare __FUNCTION__, etc.,
	even in template functions.
	(setup_vtbl_ptr): Don't declare __PRETTY_FUNCTION in the
	conditional scope at the top of a destructor.

	* error.c (dump_function_decl): Use `[ with ... ]' syntax for
	specializations too.

From-SVN: r30625