From owner-freebsd-bugs@freebsd.org Wed Jan 30 13:42:01 2019 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D0B3B14C1657 for ; Wed, 30 Jan 2019 13:42:01 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 6C0E76C781 for ; Wed, 30 Jan 2019 13:42:01 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 2C0DB14C1654; Wed, 30 Jan 2019 13:42:01 +0000 (UTC) Delivered-To: bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 06DC914C1653 for ; Wed, 30 Jan 2019 13:42:01 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 95A6D6C75B for ; Wed, 30 Jan 2019 13:42:00 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id D884D1FCAE for ; Wed, 30 Jan 2019 13:41:59 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id x0UDfxoa047574 for ; Wed, 30 Jan 2019 13:41:59 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x0UDfxEc047573 for bugs@FreeBSD.org; Wed, 30 Jan 2019 13:41:59 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 235320] usr.bin/units: What does this error message really mean: units: memory overflow in unit reduction Date: Wed, 30 Jan 2019 13:41:59 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: 11.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: 0mp@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Jan 2019 13:42:02 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235320 Bug ID: 235320 Summary: usr.bin/units: What does this error message really mean: units: memory overflow in unit reduction Product: Base System Version: 11.2-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: 0mp@FreeBSD.org I use the following one-liner to test: > sh -c 'units "$(yes m | head -n "$1")" "$(yes cm | head -n "$1")"' sh $N When N is at most 154 then units(1) handles the conversion as expected. For example, for N=3D154: > * 1e+308 > / 1e-308 For N from 155 to 333 the output is as follows: > * inf > / 0 While for N from 334 to 500 the output seems a little bit broken. Here is t= he output of N=3D500: > units: memory overflow in unit reduction > conformability error > 1 m^334 > 0 centi m centi m centi m centi m centi m centi m centi m centi m= centi m centi m centi m centi m centi m centi m centi m centi m centi m ce= nti m centi m centi m centi m centi m centi m centi m centi m centi m centi= m centi m centi m centi m centi m centi m centi m centi m centi m centi m = centi m centi m centi m centi m centi m centi m centi m centi m centi m cen= ti m centi m centi m centi m centi m centi m centi m centi m centi m centi = m centi m centi m centi m centi m centi m centi m centi m centi m centi m c= enti m centi m centi m centi m centi m centi m centi m centi m centi m cent= i m centi m centi m centi m centi m centi m centi m centi m centi m centi m= centi m centi m centi m centi m centi m centi m centi m centi m centi m ce= nti m centi m centi m centi m centi m centi m centi m centi m centi m centi= m centi m centi m centi m centi m centi m centi m centi m centi m centi m = centi m centi m centi m centi m centi m centi m centi m centi m centi m cen= ti m centi m centi m centi m centi m centi m centi m centi m centi m centi = m centi m centi m centi m centi m centi m centi m centi m centi m centi m c= enti m centi m centi m centi m centi m centi m centi m centi m centi m cent= i m centi m centi m centi m centi m centi m centi m centi m centi m centi m= centi m centi m centi m centi m centi m centi m centi m centi m centi cm m= ^166 For N >=3D 501 the output is: > units: memory overflow in unit reduction > units: memory overflow in unit reduction > units: memory overflow in unit reduction > conformability error > 1 m^500 > 1 centi cm^499 I'd like to document this behavior but I am not sure what really is expecte= d to happen in those edge cases. --=20 You are receiving this mail because: You are the assignee for the bug.=