From owner-freebsd-hackers Thu May 2 14:39:20 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id OAA27557 for hackers-outgoing; Thu, 2 May 1996 14:39:20 -0700 (PDT) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id OAA27538 for ; Thu, 2 May 1996 14:39:12 -0700 (PDT) Received: from sax.sax.de by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id XAA06224; Thu, 2 May 1996 23:38:32 +0200 Received: by sax.sax.de (8.6.11/8.6.12-s1) with UUCP id XAA01332; Thu, 2 May 1996 23:38:30 +0200 Received: (from j@localhost) by uriah.heep.sax.de (8.7.5/8.6.9) id XAA15002; Thu, 2 May 1996 23:04:39 +0200 (MET DST) From: J Wunsch Message-Id: <199605022104.XAA15002@uriah.heep.sax.de> Subject: Re: stdio problem To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Thu, 2 May 1996 23:04:38 +0200 (MET DST) Cc: jmacd@deceit.xcf.berkeley.edu Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <3259.831046296@critter.tfs.com> from Poul-Henning Kamp at "May 2, 96 02:11:36 pm" X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E X-Mailer: ELM [version 2.4ME+ PL15 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Poul-Henning Kamp wrote: > > close(0); > > if(!freopen(argv[1], "r", stdin)) { > > doing a "close(0)" is bound to confuse the stdio library. > don't do that. More generally spoken, mixing any kind of stdio function (fopen(), fclose(), fread(), fwrite(), printf() etc.) with low-level functions (syscalls in Unix: open(), close(), read(), write()) is error-prone. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)