RE: Question about static class objects

Hi Tom,

Use:

class Zap {
public:

   TList &list();
};

TList &Zap::list() {

   static TList list;
   return list;
}

which anyway is slightly better in term of C++ style :)

Cheers,
Philippe.

-----Original Message-----
From: owner-roottalk_at_root.cern.ch [mailto:owner-roottalk_at_root.cern.ch] On Behalf Of Tom Roberts
Sent: Monday, May 26, 2008 1:12 PM
To: 'ROOT Talk'
Subject: [ROOT] Question about static class objects

I am puzzled why this fails (Root 5.16 or 5.18, on Fedora Core 8).

	file zap.C contains:
		class Zap {
		public:
		        static TList list;
		};
		TList Zap::list;



	$ root -l

	root [0] .L zap.C
	root [1] Zap::list.Clear();
	 *** Break *** segmentation violation [....]

But this works:


	$ root -l

	root [0] TList zap;
	root [1] zap.Clear();
	root [2] .q

Any suggestions how to work around this?

Tom Roberts Received on Tue May 27 2008 - 19:02:32 CEST