cp-tree.h (VAR_OR_FUNCTION_DECL_CHECK): New macro.
* cp-tree.h (VAR_OR_FUNCTION_DECL_CHECK): New macro.
(RECORD_OR_UNION_TYPE_CHECK, LANG_IDENTIFIER_CAST): Likewise.
(DEFARG_NODE_CHECK): Remove; replace with DEFAULT_ARG_CHECK.
* cp-tree.h: Add tree checking macros to various tree access
macros.
* ptree.c (print_lang_decl): Test for function or variable
before accessing template info.