[vala] Report error for signals with variable argument lists

[JÃrg Billeter <juergbi src gnome org>]

commit fedb16b19fe9754e4dc25ddccc3fd97eb838bf60
Author: JÃrg Billeter <j bitron ch>
Date:   Mon Sep 24 20:40:58 2012 +0200

    Report error for signals with variable argument lists
    
    Fixes bug 683922.

 vala/valasignal.vala |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/vala/valasignal.vala b/vala/valasignal.vala
index fb5895a..3ddc453 100644
--- a/vala/valasignal.vala
+++ b/vala/valasignal.vala
@@ -1,6 +1,6 @@
 /* valasignal.vala
  *
- * Copyright (C) 2006-2011  JÃrg Billeter
+ * Copyright (C) 2006-2012  JÃrg Billeter
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -184,6 +184,11 @@ public class Vala.Signal : Symbol, Lockable {
 		return_type.check (context);
 		
 		foreach (Parameter param in parameters) {
+			if (param.ellipsis) {
+				Report.error  (param.source_reference, "Signals with variable argument lists are not supported");
+				return false;
+			}
+
 			param.check (context);
 		}