fillInStackTrace();
try { fillInStackTrace(); } catch (OutOfMemoryError e) { tallyOutOfMemoryError(); VM.sysWriteln("Cannot fill in a stack trace; out of memory!\n");  } catch (Throwable t) { tallyWeirdError(); VM.sysWriteln("Cannot fill in a stack trace; got a weird Throwable\n"); }
  public Throwable () {    super();    fillInStackTrace();  }