@@ -13,9 +13,15 @@
 template ExceptionWithPosition()
 {
 	const LexPosition pos;
 	this( const LexPosition pos, string msg, string file=null, size_t line=0, Throwable next=null )
-		{ super(sprintf!"[%s] %s"(pos, msg), file, line, next); this.pos = pos; }
+	{
+		if(pos is null)
+			super(sprintf!"[??] %s"(msg), file, line, next);
+		else
+			super(sprintf!"[%s] %s"(pos, msg), file, line, next);
+		this.pos = pos;
+	}
 }
 
 /// Thrown when encountered an EOF in the middle of a lexical token