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Re: malloc attributes and realloc
Gabriel Dos Reis <gdr@integrable-solutions.net> writes:
> Andreas Schwab <schwab@suse.de> writes:
>
> [...]
>
> | > Even on an segmented architecture it needs to be possible to compare
> | > pointers. If it were not necessary, why would realloc() docs talk about
> | > "(possibly moved) block".
> |
> | The standard actually says "(which may have the same value as a
> | pointer to the old object)". You can test for a subset of the "same
> | value" condition by comparing the representation, and on an
> | implementation where the indeterminate value of a pointer is never a
> | trap representation you can even use == or !=, but that is not
> | strictly compliant.
>
> Well, the notion of "strictly conforming" is an oxymoron.
s/strictly conforming/guaranteed by the standard/
> The point of interest is whether it is conforming.
See above.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux AG, MaxfeldstraÃe 5, 90409 NÃrnberg, Germany
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