From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Lisp object that refers to a C struct Date: Wed, 17 Oct 2012 22:46:48 +0200 Message-ID: <83bog03jyf.fsf@gnu.org> References: <83ehkz4edw.fsf@gnu.org> <83bog33wdr.fsf@gnu.org> <837gqq49j7.fsf@gnu.org> <83r4ox3frd.fsf@gnu.org> <83ipa92i95.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1350506860 11587 80.91.229.3 (17 Oct 2012 20:47:40 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 17 Oct 2012 20:47:40 +0000 (UTC) Cc: emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Oct 17 22:47:47 2012 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1TOaWn-0003Wk-JL for ged-emacs-devel@m.gmane.org; Wed, 17 Oct 2012 22:47:45 +0200 Original-Received: from localhost ([::1]:50541 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TOaWg-0003YM-Dj for ged-emacs-devel@m.gmane.org; Wed, 17 Oct 2012 16:47:38 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:57851) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TOaWd-0003XQ-G0 for emacs-devel@gnu.org; Wed, 17 Oct 2012 16:47:36 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TOaWc-0006bP-L2 for emacs-devel@gnu.org; Wed, 17 Oct 2012 16:47:35 -0400 Original-Received: from mtaout21.012.net.il ([80.179.55.169]:49821) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TOaWc-0006bD-Cl for emacs-devel@gnu.org; Wed, 17 Oct 2012 16:47:34 -0400 Original-Received: from conversion-daemon.a-mtaout21.012.net.il by a-mtaout21.012.net.il (HyperSendmail v2007.08) id <0MC2007001O1JS00@a-mtaout21.012.net.il> for emacs-devel@gnu.org; Wed, 17 Oct 2012 22:46:33 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout21.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MC20070W1PLJJ10@a-mtaout21.012.net.il>; Wed, 17 Oct 2012 22:46:33 +0200 (IST) In-reply-to: X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 (beta) X-Received-From: 80.179.55.169 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:154390 Archived-At: > From: Stefan Monnier > Cc: emacs-devel@gnu.org > Date: Wed, 17 Oct 2012 16:23:19 -0400 > > > Right now, the struct is allocated and its pointer is put into an > > alist as a Lisp integer, > > How do you convert the integer into the C struct pointer? struct foo *pwatch = (struct foo *)XLI (watch_descriptor); where watch_descriptor is a Lisp integer.