--- a/dmd/Expression.d	Sat Aug 28 16:19:48 2010 +0200
+++ b/dmd/Expression.d	Sat Aug 28 19:42:41 2010 +0400
@@ -530,7 +530,11 @@
 	{
 		IntRange ir;
 		ir.imin = 0;
-		ir.imax = type.sizemask();
+	    if (type.isintegral())
+			ir.imax = type.sizemask();
+		else
+			ir.imax = 0xFFFFFFFFFFFFFFFFUL; // assume the worst
+
 		return ir;
 	}
 	
@@ -741,8 +745,9 @@
     Expression deref()
 	{
 		//printf("Expression::deref()\n");
-		if (type.ty == TY.Treference)
-		{	
+	    // type could be null if forward referencing an 'auto' variable
+		if (type && type.ty == Treference)
+		{
 			Expression e = new PtrExp(loc, this);
 			e.type = (cast(TypeReference)type).next;
 			return e;
@@ -863,7 +868,11 @@
 	{
 		if (flag == 0)
 		{	
-			if (op == TOKimport)
+			if (op == TOKerror)
+			{
+				// Error should have already been printed
+			}
+			else if (op == TOKimport)
 				error("%s has no effect", toChars());
 			else
 				error("%s has no effect in expression (%s)",