From owner-svn-src-head@freebsd.org Thu Nov 12 19:25:31 2020 Return-Path: Delivered-To: svn-src-head@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 8DE3D462E55; Thu, 12 Nov 2020 19:25:31 +0000 (UTC) (envelope-from dim@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 "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CXBQM3d1Kz4fsh; Thu, 12 Nov 2020 19:25:31 +0000 (UTC) (envelope-from dim@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 6F325393F; Thu, 12 Nov 2020 19:25:31 +0000 (UTC) (envelope-from dim@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 0ACJPVFq059104; Thu, 12 Nov 2020 19:25:31 GMT (envelope-from dim@FreeBSD.org) Received: (from dim@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 0ACJPVvU059103; Thu, 12 Nov 2020 19:25:31 GMT (envelope-from dim@FreeBSD.org) Message-Id: <202011121925.0ACJPVvU059103@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: dim set sender to dim@FreeBSD.org using -f From: Dimitry Andric Date: Thu, 12 Nov 2020 19:25:31 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r367623 - head/contrib/llvm-project/lld/ELF X-SVN-Group: head X-SVN-Commit-Author: dim X-SVN-Commit-Paths: head/contrib/llvm-project/lld/ELF X-SVN-Commit-Revision: 367623 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Nov 2020 19:25:31 -0000 Author: dim Date: Thu Nov 12 19:25:31 2020 New Revision: 367623 URL: https://svnweb.freebsd.org/changeset/base/367623 Log: Merge commit 8df4e6094 from llvm git (by Fangrui Song): [ELF] Don't consider SHF_ALLOC ".debug*" sections debug sections Fixes PR48071 * The Rust compiler produces SHF_ALLOC `.debug_gdb_scripts` (which normally does not have the flag) * `.debug_gdb_scripts` sections are removed from `inputSections` due to --strip-debug/--strip-all * When processing --gc-sections, pieces of a SHF_MERGE section can be marked live separately `=>` segfault when marking liveness of a `.debug_gdb_scripts` which is not split into pieces (because it is not in `inputSections`) This patch circumvents the problem by not treating SHF_ALLOC ".debug*" as debug sections (to prevent --strip-debug's stripping) (which is still useful on its own). Reviewed By: grimar Differential Revision: https://reviews.llvm.org/D91291 This should fix lld segfaulting when linking the rust-based parts of the devel/py-maturin port. Reported by: Nick Venenga PR: 250783 MFC after: 3 days Modified: head/contrib/llvm-project/lld/ELF/InputSection.h Modified: head/contrib/llvm-project/lld/ELF/InputSection.h ============================================================================== --- head/contrib/llvm-project/lld/ELF/InputSection.h Thu Nov 12 18:24:37 2020 (r367622) +++ head/contrib/llvm-project/lld/ELF/InputSection.h Thu Nov 12 19:25:31 2020 (r367623) @@ -391,7 +391,8 @@ class InputSection : public InputSectionBase { (privat }; inline bool isDebugSection(const InputSectionBase &sec) { - return sec.name.startswith(".debug") || sec.name.startswith(".zdebug"); + return (sec.flags & llvm::ELF::SHF_ALLOC) == 0 && + (sec.name.startswith(".debug") || sec.name.startswith(".zdebug")); } // The list of all input sections.