private String ambiguityLocToString(CompilerLogMessage msg)
	{
		if(msg.getParameters().length < 4 ||
		   !(msg.getParameters()[1] instanceof TreeSet<?>)) return "<malformed>";
		String location = "";
		int size = ((TreeSet<?>) msg.getParameters()[1]).size();
		location =  size + " scanner state" + (size == 1 ? "" : "s");
		return location;
	}