From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 70437 invoked by alias); 17 Jun 2019 18:37:30 -0000 Mailing-List: contact libc-help-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: libc-help-owner@sourceware.org Received: (qmail 70427 invoked by uid 89); 17 Jun 2019 18:37:29 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-6.5 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS autolearn=ham version=3.3.1 spammy=browsers X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 17 Jun 2019 18:37:28 +0000 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A2DD1C1EB20B; Mon, 17 Jun 2019 18:37:27 +0000 (UTC) Received: from oldenburg2.str.redhat.com (ovpn-116-59.ams2.redhat.com [10.36.116.59]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A8AFF69197; Mon, 17 Jun 2019 18:37:25 +0000 (UTC) From: Florian Weimer To: Eswar Chandra Tadikonda Cc: libc-help@sourceware.org Subject: Re: Need info about the internals of printf References: Date: Mon, 17 Jun 2019 18:37:00 -0000 In-Reply-To: (Eswar Chandra Tadikonda's message of "Tue, 18 Jun 2019 00:02:00 +0530") Message-ID: <875zp4dpng.fsf@oldenburg2.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-IsSubscribed: yes X-SW-Source: 2019-06/txt/msg00029.txt.bz2 * Eswar Chandra Tadikonda: > I actually got stuck at __vfprintf_internal function which i am not able to > find the definition through tags. Tags browsers generally do not work with the glibc sources due to heavy use of the preprocessor, unfortunately. stdio-common/vfprintf-internal.c has the implementation, and it contains this: #ifndef COMPILE_WPRINTF # define vfprintf __vfprintf_internal So its vfprintf function is actually __vfprintf_internal. > BTW, is this the actual function called internally by printf ? Yes, calls eventually end up there. Thanks, Florian