Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1gXUAV-00066q-8y for pgsql-hackers@arkaria.postgresql.org; Thu, 13 Dec 2018 16:48:59 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1gXUAT-0006Qe-Ho for pgsql-hackers@arkaria.postgresql.org; Thu, 13 Dec 2018 16:48:57 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1gXUAT-0006QX-7W for pgsql-hackers@lists.postgresql.org; Thu, 13 Dec 2018 16:48:57 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.89) (envelope-from ) id 1gXUAM-0000E0-Iz for pgsql-hackers@lists.postgresql.org; Thu, 13 Dec 2018 16:48:56 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.4/8.14.4) with ESMTP id wBDGmXwS005003; Thu, 13 Dec 2018 11:48:33 -0500 From: Tom Lane To: Bruce Momjian cc: Alexander Korotkov , Andrey Borodin , Peter Geoghegan , Andres Freund , chenhj , Teodor Sigaev , PostgreSQL Hackers Subject: Re: Connections hang indefinitely while taking a gin index's LWLock buffer_content lock In-reply-to: <20181213153232.GA10664@momjian.us> References: <5849302B-3D98-4C09-BD43-277D0E051D2B@yandex-team.ru> <1C6E203B-71D9-46D1-AB8F-19A75323C2BE@yandex-team.ru> <20181213153232.GA10664@momjian.us> Comments: In-reply-to Bruce Momjian message dated "Thu, 13 Dec 2018 10:32:32 -0500" MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-ID: <5001.1544719713.1@sss.pgh.pa.us> Content-Transfer-Encoding: 8bit Date: Thu, 13 Dec 2018 11:48:33 -0500 Message-ID: <5002.1544719713@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk Bruce Momjian writes: > I am seeing this warning in the 9.4 branch: > ginxlog.c:756:5: warning: ‘lbuffer’ may be used uninitialized > in this function [-Wmaybe-uninitialized] I'm also getting that, just in 9.4, but at a different line number: ginxlog.c: In function 'ginRedoDeletePage': ginxlog.c:693: warning: 'lbuffer' may be used uninitialized in this function That's with gcc version 4.4.7 20120313 (Red Hat 4.4.7-23) regards, tom lane