TMapFile reuse

From: Judith Katzy (katzy@nanalpc.phy.uic.edu)
Date: Thu Apr 22 1999 - 21:02:55 MEST 

hi rooters,

I tried to reuse the following macro twice witin an interactive
ROOT session. It works fine, when I run it ones, but it gives a seg.fault 
at the mfile->Update(eh1), when I execute it for the second time. 

{
TMapFile *mfile = TMapFile::Create("histo.map","RECREATE", 500000,
                            "Memory mapped file with histogram");
TH1F *eh1   = new TH1F("eh1","nevent",100,0.,99.);
mfile->Add(eh1,"eh1");
mfile->Update(eh1);  
mfile->ls();
delete eh1;
mfile->Close();
}

Does somebody has an idea, what goes wrong?

cheers,
Judith

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