detecting invalid pointers

[Karl Heuer]

In article <3011 at nunki.usc.edu> jeenglis at nunki.usc.edu (Joe English) writes:
>karl at haddock.ima.isc.com (Karl Heuer) writes:
>>This works because pointer *equality* is well-defined even on pointers into
>>different arrays.
>
>Well, maybe not... [80x86 in large model with unnormalized pointers]

If the compiler ever generates unnormalized pointers, then it had better be
prepared to generate code to compare them correctly.

Karl W. Z. Heuer (ima!haddock!karl or karl at haddock.isc.com), The Walking Lint