From mboxrd@z Thu Jan  1 00:00:00 1970
X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/12447
Path: news.gmane.org!.POSTED!not-for-mail
From: Markus Wichmann <nullplan@gmx.net>
Newsgroups: gmane.linux.lib.musl.general
Subject: Re: Why are stdin/stdout/stderr `FILE *const` in musl?
Date: Fri, 2 Feb 2018 16:01:32 +0100
Message-ID: <20180202150132.tzocezrj5vskos66@voyager>
References: <1E109BA9-57C0-42DB-9B43-8ADE27F9E76C@hanauska.name>
Reply-To: musl@lists.openwall.com
NNTP-Posting-Host: blaine.gmane.org
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
X-Trace: blaine.gmane.org 1517583615 16115 195.159.176.226 (2 Feb 2018 15:00:15 GMT)
X-Complaints-To: usenet@blaine.gmane.org
NNTP-Posting-Date: Fri, 2 Feb 2018 15:00:15 +0000 (UTC)
User-Agent: NeoMutt/20170609 (1.8.3)
To: musl@lists.openwall.com
Original-X-From: musl-return-12463-gllmg-musl=m.gmane.org@lists.openwall.com Fri Feb 02 16:00:11 2018
Return-path: <musl-return-12463-gllmg-musl=m.gmane.org@lists.openwall.com>
Envelope-to: gllmg-musl@m.gmane.org
Original-Received: from mother.openwall.net ([195.42.179.200])
	by blaine.gmane.org with smtp (Exim 4.84_2)
	(envelope-from <musl-return-12463-gllmg-musl=m.gmane.org@lists.openwall.com>)
	id 1ehcoe-0002aV-B5
	for gllmg-musl@m.gmane.org; Fri, 02 Feb 2018 15:59:48 +0100
Original-Received: (qmail 11407 invoked by uid 550); 2 Feb 2018 15:01:50 -0000
Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm
Precedence: bulk
List-Post: <mailto:musl@lists.openwall.com>
List-Help: <mailto:musl-help@lists.openwall.com>
List-Unsubscribe: <mailto:musl-unsubscribe@lists.openwall.com>
List-Subscribe: <mailto:musl-subscribe@lists.openwall.com>
List-ID: <musl.lists.openwall.com>
Original-Received: (qmail 11389 invoked from network); 2 Feb 2018 15:01:50 -0000
Content-Disposition: inline
In-Reply-To: <1E109BA9-57C0-42DB-9B43-8ADE27F9E76C@hanauska.name>
X-Provags-ID: V03:K0:jZJTdCrScjipA+9JXksAxFjkcFaSVqNwCzhn9C49PPyR8P7Xg0+
 ciNRfPM/bvxVjjFebgmOuK/UCkvlZpjjqsmTgmvBZ3A1fq+rH8cprjSbnQDMTCXdJV8JeTY
 vBtOOfBDMSOFyw/Ttco2mUK2w8axiCpya8KBYRyZWdXeX3wcVMBSVde4lHY7M/dUDPZxNsY
 tSzF6AOOA7GerhNYUEKbA==
X-UI-Out-Filterresults: notjunk:1;V01:K0:bYziz8wrPT0=:RZAy/fxnjRWixd8+InLwdm
 a2jK32yvMKM4VXb1xX7Xz0aS1AQ2vkyUUmsj4lRfNx/ZmgFBXf7L75CaNlaKHA7Ejbm2guek0
 QIuiFeQ9mfGSQzJmq4ALUroQzXuuNB++luauHXciqeT1asCx5AYMM/u3KpzLW4QWC+c82no+s
 DTVJyATHkecgKd6obfK9TOflf1MRrIFVWZtZQJiicOpVE4N9bE0j7BHYGwSgHm298mHHEqSWb
 tRzkzyfJoboMB5/IRX8TnC7Yq4d/SgvszH9w0t11oz8kSYIazaeG8zgv1ySnNSKLxEBK4euzS
 bdj8UJ9q3nxslMSYVDCKw2dic2QfwmjHTjKsC60bwAMd8VI59/rk4LJIf49U1/R4rlD3b7AIb
 y6r827YMrIR43Asslme8tbMOQWW5Nb1IYiYglpHaAGvPtqKxJQiEwx+sY4M2uLknTzdtl9LcF
 9IIIcNoIGAU8/LakcoCBU8xvm/IR4Mq85F0QWyQYawXT6ytKIdn4VrLlbw7DTfH0CrXnZodvQ
 BI0oznzj5C/FSovqUwr3sb2u1MggwZd5Aa9cE/Lm/hmb3bSBms9sTyDHhjYsVj6HgnE3tWDAI
 gGQkWOAeo/fyuJzYVN631E8Mans/iWiTcdb+gBnNtG5xtyV2pfZUtX0LFOzvre4e8O6kJbKnl
 3d1eQM8AvFBEIbG4VIsOuLXTmMQDARcnW35A8Qz/UZaoE7dj4+2AxC6eaxFFfmiGKf+J0xNmw
 crlNpb+jpZEsV/fjNRyUA0weWeDcFq8KE3IXoMcfpGIodgBCjnsYZV8jeZBAVj0IzCjNslZ6 
Xref: news.gmane.org gmane.linux.lib.musl.general:12447
Archived-At: <http://permalink.gmane.org/gmane.linux.lib.musl.general/12447>

On Fri, Feb 02, 2018 at 02:24:28PM +0100, CodingMarkus wrote:
> 	void * getOutputPtr ( void ) {
> 		if (/* whatever */) {
> 			return &stdout;
> 		}
> 		return &stderr;
> 	}
> 

Why would you ever need a pointer to stdout or stderr? They are already
pointers to FILE. The right way to do this is

FILE *getOutputPtr (void) {
    return intofile? fopen("log.txt", "w") : whatever? stdout: stderr;
}

Ciao,
Markus