[ROOT] question about TMap.FindObject

From: Toshinori Abe (toshi@SLAC.stanford.edu)
Date: Mon Feb 19 2001 - 19:27:33 MET 

Dear Rooters,

I have a question about TMap.
When I try to run the attached file, I got different answers 
using root version 2.25/03 and 3.00/05.

with Version   2.25/03
fa=0x3cdb98 a=0x3cdb48 amc=0x3bf500 val=0x3bf500
fb=0x3cdb98 b=0x3cdb70 bmc=0x3bf520 val=0x3bf500

with Version   3.00/05
fa=4d4520 a=4d1e38 amc=4d1e50 val=4d1e50
fb=4d4540 b=4d1e68 bmc=4d1e80 val=4d1e80

I thought two outputs of "val" would be same.
It looks that "MyObject.IsEqual" does not work in "TMap" for root 3.00/05.
Would you suggest me if any idea?

Thanks very much in advance, - Toshi


 Name	: Toshinori Abe
 Add.	: SLAC M/S 96, 2575 SandHill Road, Menlo Park, CA 94025, USA
 E-mail	: toshi@SLAC.Stanford.EDU
----------------------------------------------------------------------


#include <iostream.h>

#include "TROOT.h"
#include "TMap.h"
#include "TMath.h"
#include "TObject.h"

class MyObject : public TObject {
private:
  Int_t m_ID;
public:
  MyObject(Int_t ID) {m_ID=ID;}
  MyObject()  {m_ID=0;}
  ~MyObject(){}
  Int_t GetID() {return m_ID;}
  ULong_t Hash(){ return  m_ID;}
  Bool_t IsEqual(TObject *obj){ return m_ID == ((MyObject*)obj)->GetID();}
};

TMap        *MyList = new TMap( 17, 0 );

int main (int argc,char* argv[]) {

 TROOT simple( "Test", "MyObject test" );

 MyObject* a=new MyObject(1); TObject* amc=new TObject();
 MyObject* b=new MyObject(1); TObject* bmc=new TObject();
 MyList->Add(a,amc);
 MyList->Add(b,bmc);

 cout<<"fa="<<MyList->FindObject(a)<<" a="<<a<<" amc="<<amc<<
   " val="<<MyList->GetValue(a)<<endl;
 cout<<"fb="<<MyList->FindObject(b)<<" b="<<b<<" bmc="<<bmc<<
   " val="<<MyList->GetValue(b)<<endl;

return 0;
}

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