Re: Diff b/w 32bit & 64-bit

From: Thunder from the hill (thunder@ngforever.de)
Date: Sun Jul 07 2002 - 14:41:35 EST

Hi,

On Sun, 7 Jul 2002, Jamie Lokier wrote:
> > don't cast from "foo *" to "bar *" if sizeof(foo)<sizeof(bar)
>
> What is the reason for this? I do it quite routinely ("poor man's
> inheritance").

This should only be OK if you pad bar before.

The reason is this one:
foo:
[00111001000011111101001010010101]
(bar *)foo
[00111001000011111101001010010101xunpredictablex]

                                                        Regards,
                                                        Thunder 

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