Hello once again, I'm in alittle bit of a fix. This is a part of the constructor of one of my classes: TRun::TRun(Int_t run_numb = -1,Int_t date = 0, Int_t time = 0): ftab_obj(maxobj), ftab_histo(maxhisto), frun_numb(run_numb) { if (run_numb == -1) { fsharedmemory=NULL; ffile=NULL; } else { Char_t name[20]; sprintf(name,"run%d.map",frun_numb); cout<<"creating shared memory"<<endl; fsharedmemory = TMapFile::Create(name,"RECREATE",500000,"temp_mem"); cout<<"shard memory in place"<<endl; sprintf(name,"run%d.root",frun_numb); cout<<"creating root file"<<endl; ffile = new TFile(name,"RECREATE"); cout<<"root file created"<<endl; } for (int i=0;i<maxobj;i++) { ftab_obj[i]=NULL; } cout<<"all obj are go"<<endl; for (int i=0;i<maxhisto;i++) { ftab_histo[i]=NULL; } cout<<"all histos are go"<<endl; } The problem is I have a program which uses this constructor. In fact , it always creates the same object but on the 3rd try the constructor cannot create the file ffile which is a TFile *. I can't figure out why. It just gets stuck there and I have to reboot the computer does anyone have any ideas why? Thanks a lot, Primrose.
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