message: runtime: avoid warning
diff: @@ -231,7 +231,7 @@ void *Runtime::bgThread(void *arg) {
  // debug("<<<<<<<<<<\n");
  } else {
  - write(STDERR_FILENO, "Read unexpected signal\n", strlen("Read unexpected signal\n"));
  + auto _ __attribute__((unused)) = write(STDERR_FILENO, "Read unexpected signal\n", strlen("Read unexpected signal\n"));
  }
  }
  #endif
  