Converting FORTRAN to C
jim at ISM780B.UUCP
jim at ISM780B.UUCP
Wed Jan 9 17:00:18 AEST 1985
>Although &p[ARRAYSIZE] may not dereference an invalid location, it's value
>may not have much meaning, either. For example, if you were running on
>an 80*86 chip, and p was an array filling a segment, then &p[ARRAYSIZE]
>has a value of 0! In particular, the for loop would terminate immediately.
>I don't believe that this technique is good form, even if it looks like
>it says what you mean more clearly. And I also don't believe that its
>portable.
A wise compiler writer would never allow the allocation of the last byte
of a segment. Comparisons to the address one byte beyond the end of an
array are ubiquitous in C code, and it would verge upon insanity to
try to outlaw them.
-- Jim Balter, INTERACTIVE Systems (ima!jim)
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