From owner-freebsd-bugs@freebsd.org Thu Feb 18 18:14:58 2021 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id A0B84544392 for ; Thu, 18 Feb 2021 18:14:58 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 4DhNCj6sN9z3DfX for ; Thu, 18 Feb 2021 18:14:57 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id C2AFA5442A8; Thu, 18 Feb 2021 18:14:57 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C0ADF5442A7 for ; Thu, 18 Feb 2021 18:14:57 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4DhNCj2xyHz3DYy for ; Thu, 18 Feb 2021 18:14:57 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 44ECD1D11C for ; Thu, 18 Feb 2021 18:14:57 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 11IIEvVc050923 for ; Thu, 18 Feb 2021 18:14:57 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 11IIEvDp050922 for bugs@FreeBSD.org; Thu, 18 Feb 2021 18:14:57 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: bugzilla set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 253313] lib/msun: hypotl(3) mishandles subnormal numbers Date: Thu, 18 Feb 2021 18:14:57 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: commit-hook@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: Message-ID: In-Reply-To: References: 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: 2.1.34 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Feb 2021 18:14:58 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253313 --- Comment #11 from commit-hook@FreeBSD.org --- A commit in branch stable/11 references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D6287b5978c5f3959ad7f9494681cf94d1= 243120e commit 6287b5978c5f3959ad7f9494681cf94d1243120e Author: Dimitry Andric AuthorDate: 2021-02-10 22:28:43 +0000 Commit: Dimitry Andric CommitDate: 2021-02-18 18:11:19 +0000 Fix incorrect hypotl(3) result with subnormal numbers This adjusts the factor used to scale the subnormal numbers, so it becomes the right value after adjusting its exponent. Thanks to Steve Kargl for finding the most elegant fix. Also enable the hypot tests, and add a test case for this bug. PR: 253313 (cherry picked from commit d3338f3355a612cf385632291f46c5777bba8d18) Fix lib/msun/test builds on platforms without 80-bit long doubles After d3338f3355a612cf385632291f46c5777bba8d18, the lib/msun test case 'hypotl_near_underflow' would fail to compile on platforms where long doubles weren't 80 bit, like on x86. Disable this particular test on such platforms for now. PR: 253313 (cherry picked from commit 25120662284466ecef976df8f86e97bafdedf991) contrib/netbsd-tests/lib/libm/t_hypot.c | 24 ++++++++++++++++++++++++ lib/msun/src/e_hypotl.c | 2 +- lib/msun/tests/Makefile | 1 + 3 files changed, 26 insertions(+), 1 deletion(-) --=20 You are receiving this mail because: You are the assignee for the bug.=