--- a/dwtx/draw2d/Polyline.d	Sun Aug 03 03:07:30 2008 +0200
+++ b/dwtx/draw2d/Polyline.d	Sun Aug 03 17:01:51 2008 +0200
@@ -38,11 +38,18 @@
 
 PointList points;
 private int tolerance = 2;
-private static const Rectangle LINEBOUNDS;
 
-static this(){
-    LINEBOUNDS = Rectangle.SINGLETON;
-    assert( LINEBOUNDS !is null );
+private static Rectangle LINEBOUNDS_;
+private static Rectangle LINEBOUNDS(){
+    if( LINEBOUNDS_ is null ){
+        synchronized( Polyline.classinfo ){
+            if( LINEBOUNDS_ is null ){
+                LINEBOUNDS_ = Rectangle.SINGLETON;
+                assert( LINEBOUNDS !is null );
+            }
+        }
+    }
+    return LINEBOUNDS_;
 }
 
 this(){