From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp1 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id OELXDWdCOmBDUwAA0tVLHw (envelope-from ) for ; Sat, 27 Feb 2021 13:00:23 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp1 with LMTPS id iI2GCWdCOmDTVQAAbx9fmQ (envelope-from ) for ; Sat, 27 Feb 2021 13:00:23 +0000 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id 256021ED8B for ; Sat, 27 Feb 2021 14:00:22 +0100 (CET) Received: from localhost ([::1]:48788 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lFzCn-0006kA-CY for larch@yhetil.org; Sat, 27 Feb 2021 08:00:21 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40188) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lFzCU-0006jt-Jd for bug-guix@gnu.org; Sat, 27 Feb 2021 08:00:03 -0500 Received: from debbugs.gnu.org ([209.51.188.43]:60057) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lFzCU-00087O-BJ for bug-guix@gnu.org; Sat, 27 Feb 2021 08:00:02 -0500 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1lFzCU-0007vY-9W for bug-guix@gnu.org; Sat, 27 Feb 2021 08:00:02 -0500 X-Loop: help-debbugs@gnu.org Subject: bug#46796: Cuirass & pointer finalization. Resent-From: Mathieu Othacehe Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Sat, 27 Feb 2021 13:00:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 46796 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: zimoun Received: via spool by 46796-submit@debbugs.gnu.org id=B46796.161443079930432 (code B ref 46796); Sat, 27 Feb 2021 13:00:02 +0000 Received: (at 46796) by debbugs.gnu.org; 27 Feb 2021 12:59:59 +0000 Received: from localhost ([127.0.0.1]:43370 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lFzCR-0007um-9V for submit@debbugs.gnu.org; Sat, 27 Feb 2021 07:59:59 -0500 Received: from eggs.gnu.org ([209.51.188.92]:50530) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1lFzCQ-0007uZ-7Q for 46796@debbugs.gnu.org; Sat, 27 Feb 2021 07:59:58 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:58963) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lFzCK-00082q-Ud; Sat, 27 Feb 2021 07:59:52 -0500 Received: from [2a01:e0a:19b:d9a0:98e:5d4:fa52:995a] (port=45062 helo=cervin) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1lFzCK-00044Q-86; Sat, 27 Feb 2021 07:59:52 -0500 From: Mathieu Othacehe References: <8735xihq60.fsf@gnu.org> <86im6e1tbr.fsf@gmail.com> Date: Sat, 27 Feb 2021 13:59:50 +0100 In-Reply-To: <86im6e1tbr.fsf@gmail.com> (zimoun's message of "Fri, 26 Feb 2021 21:12:56 +0100") Message-ID: <87blc5vf7d.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-guix@gnu.org List-Id: Bug reports for GNU Guix List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: 46796@debbugs.gnu.org Errors-To: bug-guix-bounces+larch=yhetil.org@gnu.org Sender: "bug-Guix" X-Migadu-Flow: FLOW_IN ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1614430822; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding:resent-cc: resent-from:resent-sender:resent-message-id:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post; bh=rvHxPs+xZ2jeWxXy5C/7pBDmRtR6jrXlzAlfNiHWmuk=; b=eMY4CWDwg7VDFFVj1JzRww2U56AnZxJuSP1sXFnbAJOrSQGzmIRfXiGd2CnA5dW4Y5o0w9 R5Rv9RlcbFKnETGB/Aatr8iXbJqOI1Mn4cuqhYizkqSLZ+1gULGK5vPes9bcrsxdsLEWR4 f78IzfCiY3lo0c+ncF4CByvC9EG190vgz5ZSUdu46YeJ7c/bC2gFb9okVBo+2SXfm14msd vv6MZvoXj8grW5IIQ1efC8fq7NgjrdVJyn5ktZVs89w+miVAit5iUqVLB6vzsU2ELzKWTt FFEjYGYstRfxaRB1WekImGwGdyN976zRBLdwR+FOiwM5fyyQAEuPVKZadUe+cA== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1614430822; a=rsa-sha256; cv=none; b=IUitJWhv/VrIjQjRM8PLYls4hHDGDxScbBQEnwXSzcj0CdAIuX29+bDgPk4FoH4WMGw7RH oQvQRIVxgy9q8V0/C1zX40jp23XP8S8DZbO1oziip4rzCHKBAgAHm/eP10Gl9be52oaRS0 YIdVXMWEBLsV0aDgyZ1oz7SHVAQZkgu6AOcWykpGi+it3JzLC9zLsueRNGWX/qRpeO2Rsf WuiPYz9pc2DUkVxF2F+onv8UATWXO7ObQc12AjOD1LxbsM4UqAldDBjOjCS+HSmQjCg2wd 985W6TTx5J9le1tS9To1hNPQe8n2er8D9gG72nttEjSGy7G2AMKzxlXp/9oomw== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of bug-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=bug-guix-bounces@gnu.org X-Migadu-Spam-Score: -1.37 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of bug-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=bug-guix-bounces@gnu.org X-Migadu-Queue-Id: 256021ED8B X-Spam-Score: -1.37 X-Migadu-Scanner: scn1.migadu.com X-TUID: vAIrlFzhBIS4 Hello zimoun, > and why is =E2=80=99zmq-message-content=E2=80=99 used for? Since =E2=80= =99message=E2=80=99 is > initialized with zero, I guess. Well, I am confused by: > > (let ((content-ptr (zmq_msg_data (message->pointer message))) > [...] > (pointer->bytevector content-ptr size)))) > > =E2=80=A6 > > (let ((msg (pointer->message! msg-pointer))) > (when content-bv > (let ((target (zmq-message-content msg))) > (bytevector-copy! content-bv 0 target 0 len))) > msg)))) > > Is =E2=80=99target=E2=80=99 at the same address than =E2=80=99msg=E2=80= =99? Maybe =E2=80=99target=E2=80=99 creates > somehow a dangling pointer. No 'target' is not at the same address than 'msg', it's just a field of 'msg' that is allocated internally when "zmq_msg_init_size" is called. Allocating a message with "zmq_msg_init_size" and filling its content by memcpy'ing data to the memory region pointed by "zmq_msg_data" is the example given in "Man 3 zmq_msg_send", to I hope this is a valid use-case :). Thanks, Mathieu