Path: utzoo!attcan!uunet!decwrl!ucbvax!MATHEMATIK.UNI-ULM.DE!borchert
From: borchert@MATHEMATIK.UNI-ULM.DE (Andreas Borchert)
Newsgroups: comp.lang.modula2
Subject: Re: Why are my loops so awkward?
Message-ID: <9006271011.AA29952@mathematik.uni-ulm.de>
Date: 27 Jun 90 10:11:41 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: Modula2 List <INFO-M2%UCF1VM.BITNET@PSUVM.PSU.EDU>
Organization: The Internet
Lines: 21

Richard Carter writes:

>   FOR i := 1 TO Length(s) DO
>     process(s[i-1]);
>     END;
>
> If Length(s) = 0, the loop never executes.  The only probelm I can
> see is that some compilers might not like the s[i-1] bit.  I seem
> to recall using a M2 compiler that wouldn't pass a computed index
> as a parameter in a procedure call (though, it's been so long, I
> coulldn't tell you which one).

The M2 compiler you cannot remember is probably the Lilith Modula-2 compiler.
In this case the implementation restriction applies for VAR-parameters only.
Lilith is word-addressed and thus not able to pass the address
of an element of a character array.

Andreas Borchert
--
borchert@mathematik.uni-ulm.de
borchert@dulruu51.bitnet