+ {
+ /* Make sure all of the builtins about to be declared have
+ BUILTINS_LOCATION has their source_location. */
+ source_location builtins_loc = BUILTINS_LOCATION;
+ cpp_force_token_locations (cpp_in, &builtins_loc);
+
+ cpp_define_builtins (cpp_in);
+
+ cpp_stop_forcing_token_locations (cpp_in);
+ }