Dear rooters,
I have a problem when using global pointers instantiated within CINT and
then used in the compiled part of my code, when I create a .dll or .so. The
problem nevers appear when I compile my code with a main program and create
a .exe. Sometimes, not always, the pointer defined by a "new" inside the
CINT macro appears inside the compiled code to be equal to 0.
The pointer is correctly declared in the Linkdef.h file with:
#pragma link C++ global gM;
Is it a rule that when doing a .dll or .so, it is forbidden to use global
pointers whose memory is allocated within CINT?
I join to this mail a very small program to illustrate my point. This
small program contains 2 (almost empty) classes TMuster and TSecond, plus a
global pointer gM on TMuster.
The following CINT macro
{
gSystem.Load("libMuster.dll");
TSecond *s;
gM = new TMuster(5);
s = new TSecond();
}
does the following : the global pointer gM is used inside the constructor
of TSecond. On Windows, everything works ok, on Linux gM is equal to 0
inside the constructor of TSecond. I have also cases where the problem
appears on Windows, unfortunatly, I was not able to condense the problem
appearing on Windows into a small program.
I am using ROOT 3.02/07, Windows NT or Linux.
Thanks a lot if you can help me.
F.X. Gentit
DAPNIA/SPP CEN Saclay
tel : 01 69 08 30 38 fax : 01 69 08 64 28
web : http://home.cern.ch/~gentit/
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