$OpenBSD: patch-Canvas_h,v 1.1 2009/10/22 23:07:54 sthen Exp $
--- Canvas.h.orig	Thu Oct 15 08:59:08 2009
+++ Canvas.h	Thu Oct 15 08:59:56 2009
@@ -68,7 +68,7 @@ class Window : public Canvas
 class Image : public Canvas
 {
  public:
-  Image( const char* file, bool alpha=false );
+  explicit Image( const char* file, bool alpha=false );
 };
 
 
