Diego Novillo <dnovillo@xxxxxxxxxx> writes:
> Does the language allow the creation of address locations out of
> arbitrary integer values?
Yes.
6.3.2.3 Pointers
5 An integer may be converted to any pointer type. [...]
> Is the dereference of such an address a defined operation?
It is implemetation-defined.
[...] Except as previously specified, the result is
implementation-defined, might not be correctly aligned, might not
point to an entity of the referenced type, and might be a trap
representation.
Also, the integer may have been the result of casting a valid pointer, in
which case the operation is fully defined (assuming the integer is wide
enough).
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@xxxxxxx
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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