From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <cygwin-return-154634-listarch-cygwin=sourceware.org@cygwin.com>
Received: (qmail 596 invoked by alias); 15 Sep 2009 23:58:35 -0000
Received: (qmail 587 invoked by uid 22791); 15 Sep 2009 23:58:35 -0000
X-SWARE-Spam-Status: No, hits=-2.6 required=5.0 	tests=BAYES_00,SPF_HELO_PASS,SPF_PASS
X-Spam-Check-By: sourceware.org
Received: from lo.gmane.org (HELO lo.gmane.org) (80.91.229.12)     by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 15 Sep 2009 23:58:31 +0000
Received: from list by lo.gmane.org with local (Exim 4.50) 	id 1Mnhuf-0007Ht-BP 	for cygwin@cygwin.com; Wed, 16 Sep 2009 01:58:21 +0200
Received: from rrcs-24-242-166-118.sw.biz.rr.com ([24.242.166.118])         by main.gmane.org with esmtp (Gmexim 0.1 (Debian))         id 1AlnuQ-0007hv-00         for <cygwin@cygwin.com>; Wed, 16 Sep 2009 01:58:21 +0200
Received: from galley by rrcs-24-242-166-118.sw.biz.rr.com with local (Gmexim 0.1 (Debian))         id 1AlnuQ-0007hv-00         for <cygwin@cygwin.com>; Wed, 16 Sep 2009 01:58:21 +0200
To: cygwin@cygwin.com
From:  gballey <galley@ace-co.com>
Subject:  Re: lseek() returning Invalid Argument
Date: Tue, 15 Sep 2009 23:58:00 -0000
Message-ID: <h8p9m4$t4p$1@ger.gmane.org>
References:  <h8p54p$j1l$1@ger.gmane.org> <loom.20090916T010637-811@post.gmane.org>
Mime-Version:  1.0
Content-Type:  text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding:  7bit
User-Agent: Thunderbird 2.0.0.23 (Windows/20090812)
In-Reply-To: <loom.20090916T010637-811@post.gmane.org>
X-IsSubscribed: yes
Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe@cygwin.com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin@cygwin.com>
List-Help: <mailto:cygwin-help@cygwin.com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
X-SW-Source: 2009-09/txt/msg00332.txt.bz2

Eric Blake wrote:
> gballey <galley <at> ace-co.com> writes:
> 
>> Anyone got an idea of what is going on here?
> 
> Yep.
> 
> 
> Oh, you wanted to know what your bug is?
> 
>> Thanks.
>>
>> /* begin test.c */
>>
>> #include <fcntl.h>
>> #include <stdio.h>
> 
> Oops - no #include <unistd.h>.  lseek takes 64-bit type arguments, but without 
> a declaration from the correct header, the compiler assumes it takes int 
> arguments.  Try compiling with -Wall.
> 

Yep, adding the header fixed it. I'm porting some apps that originated 
in Xenix years back, and that header wasn't included. I'm more 
accustomed to coding in languages with stronger type checking, and 
incorrectly assumed that when the compiler didn't complain, the types 
were OK.

I appreciate your assistance.

-Gordon


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple