instantiate templates by template class<args>; fails without /Zi ! ??

Hello,

In the following sample a template is instantiated by "template
class<type>".
This should create a static class member and initialize it by calling
getNum().

This operates as expected only when /Zi is used. (independent of /O compile
settings! )

When i compile
cl Prob54.cpp
Prob54
-- no output

cl /Zi Prob54.cpp
Prob54
-- output : 124

cl /Zi /O2 Prob54.cpp
Prob54
-- output : 124

Here is the sample source:

==== Prob54.cpp ===========================
#include <stdio.h>
int getNum()
{
 static int i=123;
 i++;
 printf("%d\n",i);
 fflush(0);
 return i;
}

template <class Foo>
class Bar
{

  public:

  Bar(Foo pFoo)
  : mFoo(pFoo)
  {
  }

  virtual ~Bar()
  {
  }

  static int sFoo;

  Foo mFoo;
};

template <class Foo>
int Bar<Foo>::sFoo = getNum();

template Bar<int>;

int main
(
  int argc
 ,char *argv[]
)
{
 return 0;
}
======= EOF ============

Whats the reason for this behaviour?

This is even the case, when my getNum function is placed in another .cpp
file and referenced via
extern int getNum();

Note : My real code is registering exemplars for make OBject functionalities
in a similar way. There is no instance of the template, except the
one required to create the static data item which calls another function to
register the examplar constructor....

--
mit freundlichen Gr??en

mario semo