static volatile int silentException_count;
static volatile Throwable silentException_lastException;

static Throwable silentException(Throwable e) {
  ++silentException_count; // yeah it's not atomic :)
  lastException(e);
  ret silentException_lastException = e;
}

static Throwable lastSilentException() {
  ret silentException_lastException;
}