From Axel:

Issue a warning message if we can not find the TStreamerInfo plugin.
Hence avoiding the case where a foreign class didn't get its TClass
object without any error message! [The reason was a missing etc dir]


git-svn-id: http://root.cern.ch/svn/root/trunk@19716 27541ba8-7e3a-0410-8455-c3a389f83636

meta/src/TVirtualStreamerInfo.cxx

-// @(#)root/base:$Name:  $:$Id: TVirtualStreamerInfo.cxx,v 1.1 2007/02/05 18:06:25 brun Exp $
+// @(#)root/base:$Name:  $:$Id: TVirtualStreamerInfo.cxx,v 1.2 2007/06/15 12:35:04 brun Exp $
 // Author: Rene Brun   05/02/2007
 /*************************************************************************
  * Copyright (C) 1995-2007, Rene Brun and Fons Rademakers.               *
@@ -142,6 +142,10 @@ TVirtualStreamerInfo *TVirtualStreamerInfo::Factory(TClass *cl)
          if (h->LoadPlugin() == -1)
             return 0;
          fgInfoFactory = (TVirtualStreamerInfo*) h->ExecPlugin(0);
+      } else {
+         gROOT->GetPluginManager()->Error("FindHandler",
+            "Cannot find plugin handler for TVirtualStreamerInfo!"
+            " Does $ROOTSYS/etc/plugins/TVirtualStreamerInfo exist?");
       }
    }