Calling static function using uninitialized pointer??

[qazmlp1209]

Is the following code reliable? I'm wondering whether it is valid to
invoke the static function using uninitialized pointer.

-----------------
#include <iostream>

class staticCl
{
public:
static void display()
{
}

} ;

int main()
{
staticCl* ptr ;
ptr->display() ;

}
-----------------

[Ian Collins]

qa********@rediffmail.com wrote:

Is the following code reliable? I'm wondering whether it is valid to
invoke the static function using uninitialized pointer.

A static member isn't called using the pointer. What you have is
undefined behaviour.
--
Ian Collins.

[Markus Moll]

Hi

qa********@rediffmail.com wrote:

Is the following code reliable? I'm wondering whether it is valid to
invoke the static function using uninitialized pointer. staticCl* ptr ;
ptr->display() ;

The expression is equivalent to "(*ptr).display()", so you invoke undefined
behavior by dereferencing ptr.

Markus

[Henryk]

> A static member isn't called using the pointer. What you have is

undefined behaviour.

Right. The code may work with most compilers but you can not rely on
that.

Just to clarify: Call your method staticCl::display() ...

--
Henryk

[Jaspreet]

qa********@rediffmail.com wrote:

Is the following code reliable? I'm wondering whether it is valid to
invoke the static function using uninitialized pointer.

-----------------
#include <iostream>

class staticCl
{
public:
static void display()
{
}

} ;

int main()
{
staticCl* ptr ;
ptr->display() ;

}
-----------------

Undefined behaviour. Why not use staticCl::display() ?