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List:       kde-devel
Subject:    Re: casting an 'int' to a class
From:       Charles Samuels <charles () kde ! org>
Date:       2002-01-22 3:05:30
[Download RAW message or body]

On Monday 21 January 2002 06:57 pm, Charles Samuels wrote:
> On Monday 21 January 2002 04:54 pm, Ellis Whitehead wrote:
> > Would the following cast from an int to a struct cause problems on any
> > systems?
> >
> > struct A {
> > 	int a;
> > 	int x();
> > };
> >
> > int foo() {
> > 	int b = 0;
> > 	return ((A*)(&b))->x();
> > }
>
> Eeewwww :)
>
> > I have a couple classes related to kdelibs/kdecore/kkey* that contain
> > only a single 'int' of data.  I would like to keep them private and put
> > 'int's in the containing class definition.
>
> 1) remove the &
> 2) I *think* some platforms (sparc64?) have sizeof(int) != sizeof(void*)
>
> Of course, if sizeof(int) and sizeof(void*) were the same, and the variable
> is private, you should be able to just change the type.

I think I completely misunderstood you :)

Did you want b to become a pointer to class A ?

-Charles


 
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