extern void pop_maybe_used (bool);
extern struct c_expr c_expr_sizeof_expr (struct c_expr);
extern struct c_expr c_expr_sizeof_type (struct c_type_name *);
+extern struct c_expr parser_build_unary_op (enum tree_code, struct c_expr);
extern struct c_expr parser_build_binary_op (enum tree_code, struct c_expr,
struct c_expr);
extern tree build_conditional_expr (tree, tree, tree);