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: Arithmetic expansion in rediretion word is evaluated twice Date: Mon, 1 Jun 2020 15:58:56 -0400 Organization: ITS, Case Western Reserve University Lines: 19 Approved: bug-bash@gnu.org Message-ID: References: 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: 8bit X-Trace: usenet.stanford.edu 1591041545 30354 209.51.188.17 (1 Jun 2020 19:59:05 GMT) X-Complaints-To: action@cs.stanford.edu Cc: chet.ramey@case.edu To: =?UTF-8?B?T8SfdXo=?= , 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=1591041541; bh=QdwC9WxhSD9lxyTMdLzZLntAT1IeGX/LfV1U9mzq7U0=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=5tYHbR17bIaB/bqUqGAr+1ojlCiQaq+IPiqMFaytk2tZI4H+sCNq+RIkUhHa6rTaV9 RJ2mmdZbzrqQ3A2E3ZduD1+fEvG7jbxVSsa0IiUvAjsMJiQygDOOi81hSD7Vv+wjujL 6Lz7XSbIUCdsioVqIZHEvb7Ow+VgBI2eTST0Ihhf/IaVS3GwIgHD7SH3TXTpO8JpC+P 4r8abIgvq8hqAzIDTovgJq55tg/ikgR4QOo5/hc/Hy2K+quVZbpvIJgxr6QSwgx5dwj svFZGlJzSwhOzc4bQx2ZKc3BSblBBTJh2y1U07a3MLicTuCaSA7uB89zHvUdxWbFCI+ 9Bh1slDA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=smtp-primary; t=1591041539; bh=kwDdU4jWSTtig92r79qP2twHeGBzULXJhHfYb9cBJ18=; h=Reply-To:Cc:Subject:To:References:From:Message-ID:Date: MIME-Version:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=3ZHYIQzSEPrtzvQeTY74Km4BguYs/6edV65Aw9YfcYLsOjxWiw9BfiG1vasndEdoqJ RJcvDIYefKcqfYY00WhD4ncTrFuN65+kYT9ILBR5CDSEmn+Xm+HgJyEheNtISgXzsLB JjhLJKRCqaSkLHTPfw8zuTlo4evOpp1qocxHmMOM7EkmeWg9wZSBYW0T/xbGNR6Hmwj L5doNNp8uA+U6jmBxLOde8Oscnp3NJYdKBy8UcHU4acREWdUrtF/MrSC3auWc7B+Xot 0m6hBzDoNmKxPODoO9Mpp/T8gcXXXhfdrVZq9jHUwzc3vtJ73dhoCrZW/1HJYH7g4mN 3e8Eissw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=case.edu; s=g-case; h=reply-to:cc:subject:to:references:from:autocrypt:organization :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=kwDdU4jWSTtig92r79qP2twHeGBzULXJhHfYb9cBJ18=; b=RZBlq0Ra1A0h0iyttethe78WzqBvp9xYFrgymukf2WLyyGCLqmVyrLUWwsc8515Aa4 qBBtuFT41ba3OxP4usW+//lF5KjuV2fgMyqRxU/ojA9b6smD8NxV/8n1tVXdRwlYfaT7 RsBd7rsC7feHb6+UWyU8xBo3eb2fhnBZqCsu5wpf4yR9sfqsXilC8kJg60+/hZQpbs8I 5ZS9Gt2ANg8yqCRcZQIIB2DJ0KJAdtSY64hE6gMra8C6nAFHA84OGpSAWoWodFPDshlt VjBUIBnkRpw8/IQdZZoujTPuon6wKZapBnt6C1gCXQ4JXAi7lDyh3sh1aXGEnjnF9Izh vMKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:reply-to:cc:subject:to:references:from:autocrypt :organization:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=kwDdU4jWSTtig92r79qP2twHeGBzULXJhHfYb9cBJ18=; b=k4IsbGUu6BxjulaYUYVPhfDPxHyle/5XEN7kykNIf+hbZg/3EM//9AX0FT7b+yAzDT kd40TqqzyxoHTh+EO3b9ZNn474+mygXuQ5wmmpz92YdXJ19Y6g8H/2Zk5C8zik+9g+cG YAGmKm4YlCEB7olReDNkpwJ45N8d5Oc+uvL87VhGzLjGaGutHZf6XgPBWAUu8b6xhDib BJKh+iefxps+w96HnGmlNxxazIvnzg8yxY02AxzePZpQlH6XLi1/aOBxSTPVH5vXAh5D GALNCdyoaxrdbzoSCbCmyJEB9ZogHn8gDrIH+JvH3KYlIBwkJAtpXvZYyjGFYgPX6eB7 U6oQ== X-Gm-Message-State: AOAM530euMBmxftcttfyvpOO8Aq8DQzWrLaJ2MHocZVPnGvbMvHensKi rSiLFRolGT32C06KMfPJNxBEwZc3sukueuDWuMHb0jNh2qLngjrChk1Q0aoxqZCh5p1/3EuoBht lVwXkBjbjYf8= X-Received: by 2002:a37:4595:: with SMTP id s143mr23377000qka.449.1591041538665; Mon, 01 Jun 2020 12:58:58 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxUGC7q4R5sPGPgpK1Wyqx8vQaeZMGzSnTRbaYCz6A4BjhedeC0ZTRVV9MxlzqQpecHsyVPLQ== X-Received: by 2002:a37:4595:: with SMTP id s143mr23376978qka.449.1591041538287; Mon, 01 Jun 2020 12:58:58 -0700 (PDT) Autocrypt: addr=chet.ramey@case.edu; prefer-encrypt=mutual; keydata= mQGiBEEOsGwRBACFa0A1oa71HSZLWxAx0svXzhOZNQZOzqHmSuGOG92jIpQpr8DpvgRh40Yp AwdcXb8QG1J5yGAKeevNE1zCFaA725vGSdHUyypHouV0xoWwukYO6qlyyX+2BZU+okBUqoWQ koWxiYaCSfzB2Ln7pmdys1fJhcgBKf3VjWCjd2XJTwCgoFJOwyBFJdugjfwjSoRSwDOIMf0D /iQKqlWhIO1LGpMrGX0il0/x4zj0NAcSwAk7LaPZbN4UPjn5pqGEHBlf1+xDDQCkAoZ/VqES GZragl4VqJfxBr29Ag0UDvNbUbXoxQsARdero1M8GiAIRc50hj7HXFoERwenbNDJL86GPLAQ OTGOCa4W2o29nFfFjQrsrrYHzVtyA/9oyKvTeEMJ7NA3VJdWcmn7gOu0FxEmSNhSoV1T4vP2 1Wf7f5niCCRKQLNyUy0wEApQi4tSysdz+AbgAc0b/bHYVzIf2uO2lIEZQNNt+3g2bmXgloWm W5fsm/di50Gm1l1Na63d3RZ00SeFQos6WEwLUHEB0yp6KXluXLLIZitEJLQwQ2hldCBSYW1l eSAoQ2FzZSBzdGFuZGFyZCkgPGNoZXQucmFtZXlAY2FzZS5lZHU+iF8EExECAB8FAkPi19EC GwMHCwkIBwMCAQMVAgMDFgIBAh4BAheAAAoJELtYafBk6nSrelkAn31Gsuib7GcCZHbv5L5t VKYR9LklAJ4hzUHKA49Z0QXR+qCb80osIcmPSbkBDQRBDrBvEAQAkK6TAOKBEM+EC4j6V/7o /riVZqcgU5cid2qG9TXdwNtD9a3kvA/ObZBO93sX59wc6Bnwo4VJxsOmMlpGrAjJsxNwg3QH akEtf8LXRbVpj5xStdmBdQZUhIQyalo/2/TZq5OijtddUQcL5cs70hTv/FpT3wUvr2Xr8rjF 41IFEz8AAwcD/A0CZEGlzIrT5WCBnl6xBog/8vKiUCbarByat3d1mL6DbizvKNXQRTC9E/vE dENAWCQCjr75Bu55xT8n3SXGtWdDC5xmZ/P3OBYORP8yl8H8I1FIosWOFirbIeYdZPq8SPD1 HL+EXo9zSiHVrrZRJ19ooCKKbSdXHFCY+aJG+0KZiEkEGBECAAkFAkEOsG8CGwwACgkQu1hp 8GTqdKvjcACfZlkVCDwaz/NTO9cy3t69oWpVPNwAnRwe0qk/WL/gfhH346xh5B3HFbFN User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.8.1 In-Reply-To: Content-Language: en-US X-Mirapoint-IP-Reputation: reputation=Good-1, source=Queried, refid=tid=0001.0A020302.5ED550CE.000B, actions=tag X-Mirapoint-IP-Reputation: reputation=good-1, source=Fixed, refid=n/a, actions=tag X-Junkmail-Status: score=7/80, host=mpv2-2015.case.edu X-Junkmail-PrAS-Raw: score=7/80, refid=2.7.2:2020.6.1.185417:17:7.944, ip=, rules=__YOUTUBE_RCVD, DKIM_SIGNATURE, __X_GOOGLE_DKIM_SIGNATURE, __HAS_REPLYTO, __HAS_CC_HDR, __SUBJ_REPLY, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __SUBJ_ALPHA_END, __TO_MALFORMED_2, __MULTIPLE_RCPTS_TO_X2, __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_MAILTO, __URI_WITH_PATH, __URI_ENDS_IN_SLASH, __URI_NO_WWW, __CP_URI_IN_BODY, __FRAUD_MONEY_CURRENCY_DOLLAR, __SUBJ_ALPHA_NEGATE, __URI_IN_BODY, __URI_NOT_IMG, __MAIL_CHAIN, __FORWARDED_MSG, __BODY_NO_MAILTO, __NO_HTML_TAG_RAW, [TRUNCATED], so=2010-03-03 19:42:08, dmn=2016-08-03-0138 Received-SPF: pass client-ip=129.22.103.227; envelope-from=chet.ramey@case.edu; helo=mpv1-2015.case.edu X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/01 15:58:59 X-ACL-Warn: Detected OS = Linux 2.4.x-2.6.x [generic] X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: X-Mailman-Original-References: Xref: csiph.com gnu.bash.bug:16346 On 6/1/20 3:34 PM, Oğuz wrote: > See: > > $ unset foo > $ : <$((foo+=42)) > bash: 84: No such file or directory > $ echo $foo > 84 > > Reproducible on 4.4.20 and 5.0.11, couldn't try on development version > because since the last push it doesn't compile How about an error message from the compile failure? -- ``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/