From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from localhost (localhost [127.0.0.1]) by arlo.cworth.org (Postfix) with ESMTP id 0BED16DE176B for ; Tue, 12 Jan 2016 01:49:21 -0800 (PST) X-Virus-Scanned: Debian amavisd-new at cworth.org X-Spam-Flag: NO X-Spam-Score: -0.719 X-Spam-Level: X-Spam-Status: No, score=-0.719 tagged_above=-999 required=5 tests=[AWL=0.101, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001] autolearn=disabled Received: from arlo.cworth.org ([127.0.0.1]) by localhost (arlo.cworth.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 0EaMhNYaMws5 for ; Tue, 12 Jan 2016 01:49:19 -0800 (PST) Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) by arlo.cworth.org (Postfix) with ESMTPS id 28ABD6DE176A for ; Tue, 12 Jan 2016 01:49:19 -0800 (PST) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id 5F6AD210CA for ; Tue, 12 Jan 2016 04:41:59 -0500 (EST) Received: from frontend1 ([10.202.2.160]) by compute5.internal (MEProxy); Tue, 12 Jan 2016 04:41:59 -0500 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=fastmail.net; h= content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to:x-sasl-enc:x-sasl-enc; s=mesmtp; bh=V3h f7Y+u8G5oRresdGvKzsjfQ58=; b=nJlGlJt7dAEiqxh4EZsOPG5emn2BIuDNV8j tF6k4YlBmVM1hVbbcx4YD1ASPzUbwZMrc7MSTzYdhSkxMJDyPkzZnAX32/QZ/gwL 4cGsx8zJYahEWA5M5mdZoUDjjaGPELsFozWXPDqsTGJtf9pYiqlkGxmp3GJ0xVJw e334Ctus= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:message-id:mime-version:subject:to:x-sasl-enc :x-sasl-enc; s=smtpout; bh=V3hf7Y+u8G5oRresdGvKzsjfQ58=; b=c2xnM 4IdrMQdUHWRgR5Ed5nL2BN15q9eZU689OHR0ExDAdGg5oHbFxSF8TmNAHgCr2Iyr R/ou1KXVkc/bjBCic4vlMQDaKwZjiFdP/gx6bu3x6zuRedpOipnsBtS4KpKjmssz B4pjnSRIUbh+YsZgHtY196k9vThJqwxo3rkXTA= X-Sasl-enc: EOS2e5eDzVUSrl0VMs0Q2VOn0n0oAwHI/QBfu8fg5psJ 1452591719 Received: from Ordinateur-de-Catherine--Konrad.local (mic92-2-82-67-216-6.fbx.proxad.net [82.67.216.6]) by mail.messagingengine.com (Postfix) with ESMTPA id C6F2BC013FE; Tue, 12 Jan 2016 04:41:58 -0500 (EST) To: notmuch@notmuchmail.org From: Konrad Hinsen Subject: Crash with Python bindings Message-ID: <5694CA65.8010400@fastmail.net> Date: Tue, 12 Jan 2016 10:41:57 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: notmuch@notmuchmail.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Use and development of the notmuch mail system." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 12 Jan 2016 09:49:21 -0000 Hi everyone, I have been writing quite a few Python scripts for notmuch before running into a strange bug. Here is a minimal script producing it: -------------------------------------------------- from notmuch import Query, Database def foo(bar): pass db = Database() q = Query(db, "*") db.close() -------------------------------------------------- Running this script (Python 3.5, MacOS X) yields: [1] 22478 abort pydev3 Temp/notmuch_test.py The crash actually happens *after* db.close(), when the Python interpreter exists, and therefore I suspect that no data is lost, but I hesitate to use scripts with that behavior in production use. The strange part is that what causes the crash is the presence of the function foo(), even though it is never called. Remove foo and the script runs fine. It is also necessary to create a Query object. The combination of a function definition (any) and the creation of a Query object yields the crash. This looks like a memory management issue, but I didn't explore it any further. Cheers, Konrad.