Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!utcsri!flaps
From: flaps@utcsri.UUCP
Newsgroups: comp.lang.c
Subject: Re: Distinguished pointers (was Re: Weird syscall returns)
Message-ID: <5193@utcsri.UUCP>
Date: Wed, 5-Aug-87 14:17:28 EDT
Article-I.D.: utcsri.5193
Posted: Wed Aug  5 14:17:28 1987
Date-Received: Fri, 7-Aug-87 05:31:13 EDT
References: <1158@copper.TEK.COM> <6858@auspyr.UUCP> <17171@cca.CCA.COM> <274@nuchat.UUCP> <452@sugar.UUCP>
Reply-To: flaps@utcsri.UUCP (Alan J Rosenthal)
Organization: University of Toronto
Lines: 34
Summary: 


>> Now we find ourselves on OS9, where the compiler says that '\n' and
>> '\r' are both 13.  (They thoughtfully provide '\l' == 11).  Now the
>> switch doesn't work, even though all it needs is to be collapsed.

[ "the switch" had a "case '\r':" immediately followed by "case '\n':". ]

In article <452@sugar.UUCP> peter@sugar.UUCP (Peter da Silva) writes:
>Suggestion: give up and accept that if your file formats differ you're
>going to have to use #ifdefs...

DON'T USE IFDEFS!  It's very easy to accidently overuse ifdefs, but when
possible you should use the other features of the pre-processor because
they are often a more direct way of saying what you want.

switch(...) {
    case '\n':
#ifndef OS9
    case '\r':

is WRONG.  The test line should be:

#if '\n' != '\r'


-- 

      //  Alan J Rosenthal
     //
 \\ //        flaps@csri.toronto.edu, {seismo!utai or utzoo}!utcsri!flaps,
  \//              flaps@toronto on csnet, flaps at utorgpu on bitnet.


"To be whole is to be part; true voyage is return."