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From: throopw@dg_rtp.UUCP (Wayne Throop)
Newsgroups: net.lang.c,net.micro.att
Subject: Re: Why doesn't this work? (3B2 problem)
Message-ID: <252@dg_rtp.UUCP>
Date: Sat, 29-Mar-86 16:20:06 EST
Article-I.D.: dg_rtp.252
Posted: Sat Mar 29 16:20:06 1986
Date-Received: Tue, 1-Apr-86 07:22:20 EST
References: <276@birtch.UUCP> <2022@brl-smoke.ARPA>
Lines: 26
Xref: watmath net.lang.c:8322 net.micro.att:1046

> getchar() returns an (int), not a (char).  EOF is an (int).
> You're throwing away some of the bits returned by getchar(),
> [...etc,etc...]
> Didn't "lint" catch this?

What, you didn't try it?  Why not? :-)    Anyhow, feeding this

        #include <stdio.h>

        void main(){
            char c;
            while( (c = getchar()) != EOF )
                ;
        }

to SysV lint gives

        warning: nonportable character comparison

Myself, I'd druther see lint complain whenever the types fed to an
assignment don't match exactly, rather than allow "implicit casts", but
the fact that quoted characters are of type int kind of spoils this idea
for C, I suspect.
-- 
Wayne Throop at Data General, RTP, NC
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