Date: Thu, 3 Sep 1998 20:02:58 +0300 (EEST) From: archer@lucky.net To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: gnu/7821: awk in free(): warning: chunk is already free. Message-ID: <199809031702.UAA23159@grape.carrier.kiev.ua>
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>Number: 7821 >Category: gnu >Synopsis: awk in free(): warning: chunk is already free. >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Sep 3 10:30:00 PDT 1998 >Last-Modified: >Originator: Alexander Litvin >Organization: Lucky Net ltd. >Release: FreeBSD 3.0-CURRENT i386 >Environment: FreeBSD grape.carrier.kiev.ua 3.0-CURRENT FreeBSD 3.0-CURRENT #121: Thu Sep 3 1 1:21:44 EEST 1998 archer@grape.carrier.kiev.ua:/usr/src/sys/compile/GRAPE i 386 >Description: The problem first appeared when GNU awk in 3.0-CURRENT was apgraded to 3.0.3. I run C-News, which uses awk extensively. After awk apgrade C-News expire stopped to work. It appeared that some GNU awk 3.0.3 programms when given absolutely legitimate input fail, giving out a number of messages: awk in free(): warning: chunk is already free. >How-To-Repeat: Run the following awk program (it is cut out of C-News expire scripts). I was not able to cut it down more -- omitting some portions of the code (e.g. OFMT line), make error go away in this case, though it certainly does not fix awk. ----------------cut-here---------------- #!/usr/bin/awk -f BEGIN { OFMT = "%.12g" big = 99999999999 lowest = big small = 0 highest = small } $0 ~ /^[0-9]+$/ { if ($1 < lowest) lowest = $1 if ($1 > highest) highest = $1 next } $0 ~ /^[a-z]+/ { print dir, highest, lowest dir = $0 lowest = big highest = small } ----------------cut-here---------------- To get the error, just give this script the following input: ----------------cut-here---------------- a 1 b ----------------cut-here---------------- >Fix: I was not able to track the error in awk sources. As a workaround, I just reverted to GNU awk 2.15.5. >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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