RE: [ROOT] static member in interactive session

From: ribordy (Mathieu.Ribordy@umh.ac.be)
Date: Thu Oct 28 2004 - 21:36:44 MEST 

Philippe, below are the informations (please notice that it works fine 
with integer and fails with boolean),
thanks,
	Mathieu

g++ -O3 -Wall -fPIC -pthread -I$ROOTSYS/include -Iinclude -c -o src/Base.o src/Base.cc
rootcint -f src/BaseDictionary.cc -c  -Iinclude Base.hh
g++ -O3 -Wall -fPIC -pthread -I$ROOTSYS/include -Iinclude -c -o src/BaseDictionary.o src/BaseDictionary.cc
g++ -shared -O src/Base.o src/BaseDictionary.o -o  lib/libbase.so

and then in an interactive root session:
.L lib/libbase.so
Base a
a.PrintMsg("") // --> output: y = 1   , x = 1
a.x=0
a.y=0
a.PrintMsg("") // --> output: y = 1   , x = 0



include/Base.hh:

#ifndef __Base__
#define __Base__

#include <iostream>
#include "TString.h"

class Base {
 public:
  Base() {;}
  virtual ~Base() {;}
  static bool y;
  static int x;
  void PrintMsg(TString msg);

  ClassDef(Base,0)
};

#endif // __Base__


src/Base.cc:

#include "Base.hh"
using namespace std;

ClassImp(Base)

bool Base::y = true;
int Base::x = 1;

void Base::PrintMsg(TString msg) {
  cerr<<"y = "<<y<<"   , x = "<<x<<endl;
  cerr << msg << '\n';
};



On Thu, 28 Oct 2004, Philippe Canal wrote:

> Hi,
> 
> There is not information to know what's going on.  In particular is A::M
> inlined or not?
> Please send a example with enough information to reproduce the problem.
> 
> Cheers,
> Philippe. 
> 
> -----Original Message-----
> From: owner-roottalk@pcroot.cern.ch [mailto:owner-roottalk@pcroot.cern.ch]
> On Behalf Of ribordy
> Sent: Thursday, October 28, 2004 5:49 AM
> To: roottalk@cern.ch
> Subject: [ROOT] static member in interactive session
> 
> Hi rooters,
> I'm not sure what's wrong with that:
> I have a class A with a public bool static member f. I generate a dictionary
> and use it in an interactive session. There is a method M() printing the
> value of f.
> 
> In the interactive session, I simply do:
> 
> A a; a.M(); --> print f=true (that's how I initialized it) a.f=false; a.M();
> --> print f=true (shouldn't it be false ?)
> 
> of course, this problem disappears when f is not declared as a static
> member.
> 
> thanks,
> 	Mathieu
> 
>

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