Path: csiph.com!xmission!news.glorb.com!usenet.stanford.edu!not-for-mail From: Chet Ramey Newsgroups: gnu.bash.bug Subject: Re: SHLVL is a random string (uninitialized string in C) when its true value is "1000" Date: Thu, 17 Sep 2015 11:06:39 -0400 Lines: 24 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: 7bit X-Trace: usenet.stanford.edu 1442502413 29600 208.118.235.17 (17 Sep 2015 15:06:53 GMT) X-Complaints-To: action@cs.stanford.edu Cc: chet.ramey@case.edu To: ziyunfei <446240525@qq.com>, bug-bash@gnu.org Envelope-to: bug-bash@gnu.org User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 In-Reply-To: X-Junkmail-Status: score=10/60, host=mpv6.cwru.edu X-Junkmail-Whitelist: YES (by domain whitelist at mpv2.tis.cwru.edu) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 129.22.105.37 X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com gnu.bash.bug:11496 On 9/17/15 12:29 AM, ziyunfei wrote: > $ SHLVL=998 bash -c 'echo $SHLVL' > 999 > $ SHLVL=999 bash -c 'echo $SHLVL' > > $ SHLVL=999 bash -c 'echo -n "$SHLVL" | hexdump' > 0b 01 > $ SHLVL=999 bash -c 'echo -n "$SHLVL" | hexdump' > 0f 01 > $ SHLVL=999 bash -c 'echo -n "$SHLVL" | hexdump' > 04 01 > $ SHLVL=1000 bash -c 'echo $SHLVL' > bash: warning: shell level (1001) too high, resetting to 1 > 1 Thanks for the report. That bug is old enough to vote in the US. Chet -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/