[ROOT] Problem with read object from root file

From: Fedor V. Ignatov (ignatov@DX1CMD.inp.nsk.su)
Date: Sun Apr 27 2003 - 02:23:26 MEST


Hi,
I obtain strange error with  reading object from root file.
It's more strange, because class consist of scalar data type only
and nothing else, but with not trival initialisation.
It d't work with compressed option only. 
It's look like overfilling in compression algorithm. 
I try it with  root30207 and root30504 at rh6.2 and 8.0, but
it's not dissapper.

What can it be?

Best regards.

Fedor Ignatov 


makeread.C
{
gROOT->LoadMacro("TGlobalrad.C+");
gGlobal=new TGlobalrad;
TFile f("r2.root","recreate");
gGlobal->Write("gGlobalw");
f.Close();
TFile *radnewengine_comp2 = TFile::Open("r2.root");
radnewengine_comp2->Get("gGlobalw");
}

root [0] 
Processing makeread.C...
Info in <TUnixSystem::ACLiC>: creating shared library /spool8/ignatov/badmind/./TGlobalrad_C.so
Error in <TClass::ReadBuffer2>: class: TGlobalrad, attempting to access a wrong version: 256, object skipped
Error in <TBuffer::CheckByteCount>: object of class TGlobalrad read too few bytes: 2 instead of 55773187
Warning in <TBuffer::CheckByteCount>: TGlobalrad::Streamer() not in sync with data on file, fix Streamer()
Error in <TBuffer::CheckByteCount>: byte count probably corrupted around buffer position 47:
	55773187 for a possible maximum of 262





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