-extern tree build_addr_func PARAMS ((tree));
-extern tree build_call PARAMS ((tree, tree));
-extern tree build_method_call PARAMS ((tree, tree, tree, tree, int));
-extern int null_ptr_cst_p PARAMS ((tree));
-extern int sufficient_parms_p PARAMS ((tree));
-extern tree type_decays_to PARAMS ((tree));
-extern tree build_user_type_conversion PARAMS ((tree, tree, int));
-extern tree build_new_function_call PARAMS ((tree, tree));
-extern tree build_new_method_call (tree, tree, tree, tree, int);
-extern tree build_special_member_call (tree, tree, tree, tree, int);
-extern tree build_new_op PARAMS ((enum tree_code, int, tree, tree, tree));
-extern tree build_op_delete_call PARAMS ((enum tree_code, tree, tree, int, tree));
-extern int can_convert PARAMS ((tree, tree));
-extern int can_convert_arg PARAMS ((tree, tree, tree));
-extern int can_convert_arg_bad PARAMS ((tree, tree, tree));
-extern int enforce_access PARAMS ((tree, tree));
-extern tree convert_default_arg PARAMS ((tree, tree, tree, int));
-extern tree convert_arg_to_ellipsis PARAMS ((tree));
-extern tree build_x_va_arg PARAMS ((tree, tree));
-extern tree cxx_type_promotes_to PARAMS ((tree));
-extern tree type_passed_as PARAMS ((tree));
-extern tree convert_for_arg_passing PARAMS ((tree, tree));
+extern tree build_addr_func (tree);
+extern tree build_call (tree, tree);
+extern tree build_method_call (tree, tree, tree, tree, int);
+extern bool null_ptr_cst_p (tree);
+extern bool sufficient_parms_p (tree);
+extern tree type_decays_to (tree);
+extern tree build_user_type_conversion (tree, tree, int);
+extern tree build_new_function_call (tree, tree);
+extern tree build_new_method_call (tree, tree, tree, tree, int);
+extern tree build_special_member_call (tree, tree, tree, tree, int);
+extern tree build_new_op (enum tree_code, int, tree, tree, tree);
+extern tree build_op_delete_call (enum tree_code, tree, tree, int, tree);
+extern bool can_convert (tree, tree);
+extern bool can_convert_arg (tree, tree, tree);
+extern bool can_convert_arg_bad (tree, tree, tree);
+extern bool enforce_access (tree, tree);
+extern tree convert_default_arg (tree, tree, tree, int);
+extern tree convert_arg_to_ellipsis (tree);
+extern tree build_x_va_arg (tree, tree);
+extern tree cxx_type_promotes_to (tree);
+extern tree type_passed_as (tree);
+extern tree convert_for_arg_passing (tree, tree);