From owner-freebsd-current  Fri Jun 19 09:56:15 1998
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To: Terry Lambert <tlambert@primenet.com>
cc: peter@netplex.com.au (Peter Wemm), current@FreeBSD.ORG
Subject: Re: Bogus errno twiddling by lstat... 
In-reply-to: Your message of "Wed, 17 Jun 98 12:50:35 PDT."
             <199806171950.MAA25326@usr01.primenet.com> 
Date: Fri, 19 Jun 1998 09:55:00 PDT
From: Bill Fenner <fenner@parc.xerox.com>
Message-Id: <98Jun19.095515pdt.177515@crevenia.parc.xerox.com>
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In message <199806171950.MAA25326@usr01.primenet.com> you write:
>> 1: This is a classic programming error.. You're not really supposed to be 
>> looking at the value of errno except right after a -1 return from 
>> something.
>
>I know I'm not supposed to be.  However, it's not supposed to be diddling
>the errno.

The ANSI C standard says that unless stated otherwise in the standard
(e.g. the math functions), library functions may change errno even if
there is no error.

  Bill

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