From owner-svn-src-all@freebsd.org Fri Feb 12 20:00:50 2021 Return-Path: Delivered-To: svn-src-all@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 08C4452F2E7; Fri, 12 Feb 2021 20:00:50 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: from mail-qt1-x82c.google.com (mail-qt1-x82c.google.com [IPv6:2607:f8b0:4864:20::82c]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Dckrd1lyzz3rHt; Fri, 12 Feb 2021 20:00:48 +0000 (UTC) (envelope-from markjdb@gmail.com) Received: by mail-qt1-x82c.google.com with SMTP id v3so541945qtw.4; Fri, 12 Feb 2021 12:00:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; 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Fri, 12 Feb 2021 12:00:44 -0800 (PST) Received: from raichu ([142.126.164.150]) by smtp.gmail.com with ESMTPSA id t3sm6079945qkm.4.2021.02.12.12.00.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Feb 2021 12:00:43 -0800 (PST) Sender: Mark Johnston Date: Fri, 12 Feb 2021 15:00:41 -0500 From: Mark Johnston To: Jung-uk Kim Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r362333 - in head: contrib/flex contrib/flex/src usr.bin/lex usr.bin/lex/lib Message-ID: References: <202006181809.05II9G8p054025@repo.freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202006181809.05II9G8p054025@repo.freebsd.org> X-Rspamd-Queue-Id: 4Dckrd1lyzz3rHt X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=RTPrjAO0; dmarc=none; spf=pass (mx1.freebsd.org: domain of markjdb@gmail.com designates 2607:f8b0:4864:20::82c as permitted sender) smtp.mailfrom=markjdb@gmail.com X-Spamd-Result: default: False [-2.70 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FORGED_SENDER(0.30)[markj@freebsd.org,markjdb@gmail.com]; MIME_TRACE(0.00)[0:+]; RBL_DBL_DONT_QUERY_IPS(0.00)[2607:f8b0:4864:20::82c:from]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; FROM_NEQ_ENVFROM(0.00)[markj@freebsd.org,markjdb@gmail.com]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-0.998]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[freebsd.org]; SPAMHAUS_ZRD(0.00)[2607:f8b0:4864:20::82c:from:127.0.2.255]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::82c:from]; MID_RHS_NOT_FQDN(0.50)[]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[svn-src-all,svn-src-head] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 12 Feb 2021 20:00:50 -0000 On Thu, Jun 18, 2020 at 06:09:16PM +0000, Jung-uk Kim wrote: > Author: jkim > Date: Thu Jun 18 18:09:16 2020 > New Revision: 362333 > URL: https://svnweb.freebsd.org/changeset/base/362333 > > Log: > MFV: r362286 > > Merge flex 2.6.4. This seems to have introduced a regression: input() now returns 0 instead of EOF to indicate that the end of input was reached. This has been reported in a few places: https://github.com/westes/flex/issues/448 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911415 It breaks the scanner used by libdtrace, and as a result dtrace is unable to resolve some probe argument types: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253440 I have a small patch to libdtrace which works around this. The upstream commit that introduced the change is fairly old at this point, and upstream seems somewhat unresponsive, so I'm not sure it'll get reverted. Some other scanners in the tree look like they'd be affected, like crypto/heimdal/lib/asn1/lex.l or sys/contrib/dev/acpica/compiler/aslsupport.l, so I'm wondering if we should revert this particular change for 13.0. Certainly we should fix the DTrace bug one way or another for 13.0.