How ANSI is Apollo's cc 6.7 (SR 10.2)

Doug Gwyn gwyn at smoke.BRL.MIL
Thu Sep 13 05:25:02 AEST 1990


In article <17963 at haddock.ima.isc.com> karl at haddock.ima.isc.com (Karl Heuer) writes:
>But it isn't arbitrary junk: `str*' is part of the reserved namespace
>associated with <string.h>, so this would seem to be legal.

As some sort of twisted, perverted interpretation of the "law", I guess
it might be so considered.  Actually, though, reservation of that portion
of the external identifier name space (for implementation use) was
specifically aimed at avoiding potential problems with applications
developed under the current C standard when and if implementations were
to start conforming with some future enhanced version of the standard.
It was certainly not intended to provide conforming implementations of
the current standard a bunch of names to steal for nonstandard uses.

To see what is wrong with them doing that, suppose that in a future
version of the C standard a function named strcpyn() is standardized
with different interface or semantics from Apollo's.  Clearly that would
put users of Apollo's supposedly standard C implementation in a bind in
some cases.  (Ignoring the even greater bind it would put the Apollo
implementors in, because they deserve it.)



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