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Article #476Re: XENIX 3.0 toupper() and tolower() broken
From: Alain Williams
Date: Wed, 02 Oct 1985 15:45
Date: Wed, 02 Oct 1985 15:45
17 lines
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1336 bytes
>> Seems that the XENIX 3.0 ctype.h has toupper() and tolower() defined as
>> macros like this,...
>> #define toupper(x) (ifsomething(x) ? dosomething(x) : (x))
>> which breaks badly if (x) is autoincrement or autodecrement. Ie.
>> toupper(s++) goes to (ifsomething(s++) ? donesomething(s++) : (s++)),
>> which is clearly wrong.
This is clearly right. When you are dealing with macros, you must always
expect this. The fact that it broke news software is a reflection on the
way news was written, not the XENIX macros.
--
Alain Williams,
Root Computers Ltd, London, England.
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site root44.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!think!harvard!seismo!mcvax!ukc!stc!root44!addw From: addw@root44.UUCP (Alain Williams) Newsgroups: net.bugs Subject: Re: XENIX 3.0 toupper() and tolower() broken Message-ID: <5452@root44.UUCP> Date: Wed, 2-Oct-85 11:45:38 EDT Article-I.D.: root44.5452 Posted: Wed Oct 2 11:45:38 1985 Date-Received: Sat, 5-Oct-85 07:23:47 EDT Organization: Root Computers Ltd., London Lines: 17 Xpath: stc stc-a