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Re: PATCH: BPs & cleanups for ARRAY_SIZE
On Aug 23, 2000, Geoff Keating <geoffk@cygnus.com> wrote:
> Alexandre Oliva <aoliva@redhat.com> writes:
>> On Aug 23, 2000, Greg McGary <greg@mcgary.org> wrote:
>>
>> > -- An array subscript is out of range, even if an object
>> > is apparently accessible with the given subscript (as
>> > in the lvalue expression a[1][7] given the declaration
>> > int a[4][5]) (6.5.6).
>>
>> Ok, this applies to array subscripts, but does it apply to pointers
>> derived from the arrays too? In particular, does it apply to char*s?
> Yes. (Section 6.5.6 is actually about the additive operators, not about []).
But char* is supposed to be usable to iterate over raw memory. It
should be well-defined behavior.
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
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