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From: gwyn@smoke.brl.mil (Doug Gwyn)
Newsgroups: comp.unix.questions
Subject: Re: errno
Message-ID: <16433@smoke.brl.mil>
Date: 17 Jun 91 14:12:07 GMT
References: <1991Jun15.151924.24619@thunder.mcrcim.mcgill.edu> <2157@mitisft.Convergent.COM> <1991Jun17.124318.1384@prl.dec.com>
Organization: U.S. Army Ballistic Research Laboratory, APG, MD.
Lines: 10

In article <1991Jun17.124318.1384@prl.dec.com> boyd@prl.dec.com (Boyd Roberts) writes:
-In article <2157@mitisft.Convergent.COM>, dold@mitisft.Convergent.COM (Clarence Dold) writes:
-> printf("Errno %d: %s\n", want_err, 
-> 	want_err <= sys_nerr ? sys_errlist[want_err] : "Out of range" );
-> I like this one because it's one of the few places where the " ? : "
-> construct looks correct to me.
-Eh?  The bounds of a reasonable errnos lie between 1 and sys_nerr.
-`errno == 0' means no error.

Which is probably why sys_errlist[0] contains "Error 0".