Newsgroups: comp.lang.c
Path: utzoo!utgpu!watserv1!watmath!datangua
From: datangua@watmath.waterloo.edu (David Tanguay)
Subject: Constants in conditionals, was Re: Are enums safe to use in portable code?
Message-ID: <1991Feb18.113919.28217@watmath.waterloo.edu>
Organization: University of Waterloo
References: <9890@dog.ee.lbl.gov>
Date: Mon, 18 Feb 1991 11:39:19 GMT
Lines: 10

In article <9890@dog.ee.lbl.gov> torek@elf.ee.lbl.gov (Chris Torek) writes:
>Both of these are effectively the same as `if (0)', hence a good compiler
>should warn about a constant in conditional context [...]

Oooo I hope not! I occasionally use constants in ifs.
"if( PATCH_MODE ) { ... }", where PATCH_MODE is a cpp macro (0 or 1).
I know I coud use #if (or #ifdef), but I find them too ugly. I could also
use an external, but then I don't get the dead code elimination.
-- 
David Tanguay            Software Development Group, University of Waterloo