X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=1.8 required=5.0 tests=AWL,BAYES_00,BOTNET,KHOP_THREADED,RCVD_IN_DNSWL_NONE,RCVD_IN_HOSTKARMA_NO,RCVD_IN_HOSTKARMA_YE X-Spam-Check-By: sourceware.org Message-id: <50496887.8030702@cygwin.com> Date: Thu, 06 Sep 2012 23:22:47 -0400 From: "Larry Hall (Cygwin)" Reply-to: cygwin AT cygwin DOT com User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120824 Thunderbird/15.0 MIME-version: 1.0 To: cygwin AT cygwin DOT com Subject: Re: Using rand_r and -std=c99 with gcc References: In-reply-to: Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 7bit Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com On 9/6/2012 10:37 PM, Jason Gross wrote: > Hi, > If I try to compile a C program which uses rand_r with gcc 4.5.3, with > -std=c99, I get > > warning: implicit declaration of function 'rand_r'. > > Google gave me http://cygwin.com/ml/cygwin/2009-05/msg00417.html and > http://sourceware.org/ml/newlib/2007/msg00800.html, which explains why > this happens, but these messages are 3 years old. Additionally, > http://linux.die.net/man/3/rand_r suggests that rand_r is c99. Are > there plans to update stdlib.h to account for c99? If I look through > the http://linux.die.net/man pages and figure out which things are c99 > and submit a patch, will it get checked in? The Linux man page you point to has this to say about rand_r's conformance: The function rand_r() is from POSIX.1-2001. POSIX.1-2008 marks rand_r() as obsolete. The fact that rand_r doesn't list c99 and is obsoleted in POSIX.1-2008 makes me dubious that newlib folks are going to jump at a patch to add it to c99. -- Larry _____________________________________________________________________ A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting annoying in email? -- 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