Messages in this thread | | | Date | Sun, 7 Jul 2002 13:41:35 -0600 (MDT) | From | Thunder from the hill <> | Subject | Re: Diff b/w 32bit & 64-bit |
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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 -- (Use http://www.ebb.org/ungeek if you can't decode) ------BEGIN GEEK CODE BLOCK------ Version: 3.12 GCS/E/G/S/AT d- s++:-- a? C++$ ULAVHI++++$ P++$ L++++(+++++)$ E W-$ N--- o? K? w-- O- M V$ PS+ PE- Y- PGP+ t+ 5+ X+ R- !tv b++ DI? !D G e++++ h* r--- y- ------END GEEK CODE BLOCK------
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