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From: decot@hpisod2.HP.COM (Dave Decot)
Newsgroups: comp.lang.c
Subject: Re: strange behaviour of lint?
Message-ID: <2550087@hpisod2.HP.COM>
Date: 9 May 89 09:54:03 GMT
References: <1325@rivm05.UUCP>
Organization: Hewlett Packard, Cupertino
Lines: 21

Since you have not provided an external declaration for the function exit(),
lint assumes that in your program, the following declaration is implied:

    extern int exit();

When lint checks the lint library for libc, however, it sees that there it
is declared to return void.

You can get lint to stop this message by adding:

     extern void exit();

before you first use exit().

The function perror() has a similar problem.

NOTE: For ANSI C compilation systems, ignore all of the previous, and use

    #include <stdlib.h>

instead.