X-Authentication-Warning:	delorie.com: mail set sender to djgpp-bounces using -f
From:	=?ISO-8859-1?Q?Hans-Bernhard_Br=F6ker?= <HBBroeker AT t-online DOT de>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: freopen
Date:	Sat, 05 May 2012 14:22:59 +0200
Lines:	19
Message-ID:	<a0kkcvF69jU1@mid.dfncis.de>
References:	<4182049f-12cf-4935-892b-daeaac0f3fd8 AT v2g2000vbx DOT googlegroups DOT com> <a0j2npFlg6U1 AT mid DOT dfncis DOT de> <3394f14f-8b8e-4b81-baa2-1f986b13d4eb AT p21g2000vby DOT googlegroups DOT com>
Mime-Version:	1.0
X-Trace:	news.dfncis.de t+iGDblCCr+H50Pi17zwBg/WrgTEjTe5cjB9xhJSJYtXdDIIgCYoErGjIK6c1sTOPX3qa8GWPX
Cancel-Lock:	sha1:YByIwSj3sZp+7w627GEbyFCBpL8=
User-Agent:	Mozilla/5.0 (Windows NT 6.1; rv:12.0) Gecko/20120420 Thunderbird/12.0
In-Reply-To:	<3394f14f-8b8e-4b81-baa2-1f986b13d4eb@p21g2000vby.googlegroups.com>
Bytes:	1886
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com
Errors-To:	nobody AT delorie DOT com
X-Mailing-List:	djgpp AT delorie DOT com
X-Unsubscribes-To:	listserv AT delorie DOT com

On 05.05.2012 08:01, Georg wrote:
> "FILE *freopen(const char *filename, const char *mode, FILE *file);
>
> Description
>
> This function closes file if it was open, then opens a new file like
> fopen(filename, mode) (see section fopen) but it reuses file."
>
> I read this description that the third parameter of freopen is closed,
> in my example it is stdout. The resulting handle is associated with
> stdout.dat and I do not see that this gets closed.

I think you overlooked that in your example, you called freopen() 
_twice_.  The first time you replaced the stdout handle by the file 
"stdout.dat", the second time you closed that and replaced stdout by a 
handle to the console.

When your example fclosed() the FILE *f returned by the first freopen(), 
you actually closed stdout itself.

- Raw text -