On Aug 15 2007 11:58, Rene Herman wrote:
>> > > > > NULL is not 0 though.
>> > > > It is. Its representation isn't guaranteed to be all-bits-zero,
>> > >
>
> He said the null _pointer_ isn't guaranteed to be all-bits zero. And it
> isn't. Read the standard or the faq.
0 is all-bits-zero.
NULL is 0. ("It is.", above)
Transitively, this would make NULL all-bits-zero.
I might have missed something, though, perhaps that the cast to void* makes it
intransitive.
But leave it at whatever the standard says.
>> > > > but the constant value 0 when used in pointer context is always a
>> > > > null pointer (and in fact the standard requires that NULL be
>> > > > #defined as 0 or a cast thereof).
Jan
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