Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1euSV6-0003sO-V0 for pgsql-www@arkaria.postgresql.org; Sat, 10 Mar 2018 00:36:41 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1euSV5-00016p-BD for pgsql-www@arkaria.postgresql.org; Sat, 10 Mar 2018 00:36:39 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1euSV5-00016g-5w for pgsql-www@lists.postgresql.org; Sat, 10 Mar 2018 00:36:39 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1euSUx-0003Y2-5a for pgsql-www@lists.postgresql.org; Sat, 10 Mar 2018 00:36:38 +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 w2A0aSLD030023 for ; Fri, 9 Mar 2018 19:36:29 -0500 From: Tom Lane To: pgsql-www@lists.postgresql.org Subject: Bogus reports from coverage.postgresql.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <30021.1520642188.1@sss.pgh.pa.us> Content-Transfer-Encoding: quoted-printable Date: Fri, 09 Mar 2018 19:36:28 -0500 Message-ID: <30022.1520642188@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk I happened to notice that if you look at https://coverage.postgresql.org/src/backend/optimizer/util/predtest.c.gcov= .html it claims that the two occurrences of elog(ERROR, "predicate_classify returned a bogus value"); at lines 492 and 803 are reached. This would be quite astonishing if true, but it isn't true, since the regression tests aren't reporting any such failure. Needless to say, this puts quite a damper on my faith in the coverage reports. Maybe that machine needs a software update? regards, tom lane