From owner-svn-src-all@freebsd.org Mon Jan 21 02:59:38 2019 Return-Path: Delivered-To: svn-src-all@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 6354E1481DB7; Mon, 21 Jan 2019 02:59:38 +0000 (UTC) (envelope-from kevans@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) server-signature RSA-PSS (4096 bits) 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 0682369BAF; Mon, 21 Jan 2019 02:59:38 +0000 (UTC) (envelope-from kevans@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 C10ADB76C; Mon, 21 Jan 2019 02:59:37 +0000 (UTC) (envelope-from kevans@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x0L2xblb020037; Mon, 21 Jan 2019 02:59:37 GMT (envelope-from kevans@FreeBSD.org) Received: (from kevans@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x0L2xbm0020036; Mon, 21 Jan 2019 02:59:37 GMT (envelope-from kevans@FreeBSD.org) Message-Id: <201901210259.x0L2xbm0020036@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kevans set sender to kevans@FreeBSD.org using -f From: Kyle Evans Date: Mon, 21 Jan 2019 02:59:37 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r343242 - stable/12/lib/libc/stdlib X-SVN-Group: stable-12 X-SVN-Commit-Author: kevans X-SVN-Commit-Paths: stable/12/lib/libc/stdlib X-SVN-Commit-Revision: 343242 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 0682369BAF X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.95)[-0.951,0]; NEURAL_HAM_LONG(-1.00)[-0.999,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 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: Mon, 21 Jan 2019 02:59:38 -0000 Author: kevans Date: Mon Jan 21 02:59:37 2019 New Revision: 343242 URL: https://svnweb.freebsd.org/changeset/base/343242 Log: MFC r342757: getopt_long(3): fix case of malformed long opt When presented with an arg string like '-l-', getopt_long will successfully parse out the 'l' short option, then proceed to match '--' against the first longopts entry as it later does a strncmp with len=0. This latter bit is arguably another bug in itself, but presumably not a practical issue as all callers of parse_long_options are already doing the right thing (except this one pointed out). An opt string like '-l-' should be considered malformed and throw a bad argument rather than behaving as if '--' were passed. It cannot possibly do what the invoker expects, and it's probably the result of a typo (ls -l- a) rather than any intent. Modified: stable/12/lib/libc/stdlib/getopt_long.c Directory Properties: stable/12/ (props changed) Modified: stable/12/lib/libc/stdlib/getopt_long.c ============================================================================== --- stable/12/lib/libc/stdlib/getopt_long.c Mon Jan 21 02:57:57 2019 (r343241) +++ stable/12/lib/libc/stdlib/getopt_long.c Mon Jan 21 02:59:37 2019 (r343242) @@ -481,6 +481,8 @@ start: #endif if (*place == '-') { place++; /* --foo long option */ + if (*place == '\0') + return (BADARG); /* malformed option */ #ifdef GNU_COMPATIBLE dash_prefix = DD_PREFIX; #endif