(no subject)

From: A.V. Daniel (daniel@nucax2.phy.vanderbilt.edu)
Date: Thu Mar 02 2000 - 00:41:42 MET


Hi Rooters,

Who can answer what is wrong?
I tried to make a simple code "test2.C" working
with TFile and TTree. It creates "test4.C" code
to read the TTree file. But after the next 
commands

.L test4.C
test4 t
t.Show(1)

I got the message
"This program has performed on illegal operation
and will be shut down"
Details:
ROOT caused an invalid page fault in
module ROOT_TREE.DLL at 015f:01345c08.

What is wrong in my code? It was used on Windows 98 
and this moment I have not possibility to check it 
on another platform. The version of Root was 2.23.12.
 

In principal I would like to apply the root for saving
a 3d object, which has size ~16 GB, as a TTree. May be
it will reduce the size. 
 
Andrei

void test2()
{
   int i,j;
   struct {
     unsigned short s_buf[8192];
   } cbuf;

   TFile *ff = new TFile("ff.dat", "NEW", "Test of root file");

   TTree *T = new TTree("T", "List of arrays");

   TBranch *B = T->Branch("B", &cbuf, "s_buf[8192]/s");

   for(i = 0; i < 10; ++i)
   {
      cbuf.s_buf[0] = i;
      cbuf.s_buf[100] = i+10;
      T->Fill();
   }
   T->MakeClass("test4");

   ff->Close();
   
}



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