Path: csiph.com!xmission!news.snarked.org!news.linkpendium.com!news.linkpendium.com!panix!usenet.stanford.edu!not-for-mail From: Chet Ramey Newsgroups: gnu.bash.bug Subject: Re: crash (unhandled SIGPIPE) on write to closed file descriptor Date: Mon, 22 Jul 2019 11:28:45 -0400 Lines: 23 Approved: bug-bash@gnu.org Message-ID: References: <66df6798-b6d0-40ad-68f7-ef1738c69d53@case.edu> Reply-To: chet.ramey@case.edu NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Trace: usenet.stanford.edu 1563809346 31826 209.51.188.17 (22 Jul 2019 15:29:06 GMT) X-Complaints-To: action@cs.stanford.edu Cc: chet.ramey@case.edu To: Bonjour Abracadraba , bug-bash@gnu.org Envelope-to: bug-bash@gnu.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1563809327; bh=hWX1x7RzIKuPCOEWO2DEMqCxz9PvddqcUfI6Ff1dqKE=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; 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Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 In-Reply-To: Content-Language: en-US X-Junkmail-Status: score=7/90, host=mpv4-2015.case.edu X-Junkmail-PrAS-Raw: score=7/90, refid=2.7.2:2019.7.22.142716:17:7.944, ip=, rules=DKIM_SIGNATURE, __HAS_REPLYTO, __HAS_CC_HDR, __SUBJ_REPLY, __PHISH_SPEAR_SUBJ_PREDICATE, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __SUBJ_ALPHA_END, __TO_MALFORMED_2, __TO_NAME, __TO_NAME_DIFF_FROM_ACC, __HAS_REFERENCES, __REFERENCES, __HAS_FROM, FROM_EDU_TLD, __HAS_MSGID, __SANE_MSGID, DATE_TZ_NA, __USER_AGENT, __MOZILLA_USER_AGENT, __MIME_VERSION, __IN_REP_TO, __CT, __CT_TEXT_PLAIN, __CTE, __REPLYTO_SAMEAS_FROM_ADDY, __REPLYTO_SAMEAS_FROM_ACC, __FROM_DOMAIN_IN_ANY_CC1, __FROM_DOMAIN_IN_ANY_CC2, __REPLYTO_SAMEAS_FROM_DOMAIN, __DKIM_ALIGNS_1, __DKIM_ALIGNS_2, __ANY_URI, __URI_WITH_PATH, __URI_NO_WWW, __CP_URI_IN_BODY, __SUBJ_ALPHA_NEGATE, __URI_IN_BODY, __URI_NOT_IMG, __FORWARDED_MSG, __BODY_NO_MAILTO, __NO_HTML_TAG_RAW, BODY_SIZE_700_799, BODYTEXTP_SIZE_3000_LESS, __MIME_TEXT_P1, __MIME_TEXT_ONLY, __URI_NS, HTML_00_01, HTML_00_10, [TRUNCATED], so=2010-03-03 19:42:08, dmn=2016-08-03-0138 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 129.22.103.195 X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: <66df6798-b6d0-40ad-68f7-ef1738c69d53@case.edu> X-Mailman-Original-References: Xref: csiph.com gnu.bash.bug:15198 On 7/20/19 2:05 PM, Bonjour Abracadraba wrote: > Bash Version: 5.0 > Patch Level: 3 > Release Status: release > > Description: > Bash 2.04 through 5.0 crash when trying to write to a closed socket. > It is expected for bash to give an user error, but it exits instead. This seems like user error. The script's actions caused the socket to close, the next write generates SIGPIPE as a result, and SIGPIPE is a fatal signal. If you want the script to survive the SIGPIPE it generates, trap SIGPIPE. Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, UTech, CWRU chet@case.edu http://tiswww.cwru.edu/~chet/