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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 2:57:12
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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.

>
> Thanks,
> Ellis
>
> >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to
> >> unsubscribe <<

 
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