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Message-Id: <200207041016.g64AGhEF017182@grosbein.pp.ru>
Date: Thu, 4 Jul 2002 18:16:43 +0800 (KRAST)
From: Eugene Grosbein <eu@grosbein.pp.ru>
Reply-To: Eugene Grosbein <eu@grosbein.pp.ru>
To: FreeBSD-gnats-submit@FreeBSD.org
Cc: stable@FreeBSD.org
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Subject: bin/40177: /bin/sh with builtin 'test' has memory leaks
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>Number:         40177
>Category:       bin
>Synopsis:       /bin/sh with builtin 'test' has memory leaks
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jul 04 03:20:04 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Eugene Grosbein
>Release:        FreeBSD 4.6-STABLE i386
>Organization:
Svyaz Service JSC
>Environment:
System: All releases with test built in /bin/sh

>Description:
	There seem to be memory leak in 'test' command that was not
	a problem when it was external command but it became a problem
	when 'test' was made builtin.

>How-To-Repeat:

	1. Make test.sh:

	#!/bin/sh

	while :
	do
	  [ 1=1 ]
	done

	2. run top in one session and 'nice ./test.sh' in another,
	see how quickly it leaks.

>Fix:

	Unknown for me. There are workarounds, though:

	1. alias test=/bin/test; alias [=/bin/[
	This will force using standalone versions of test and
	attenuate the problem.
	2. Rebuild /bin/sh without test as builtin.
	That's enough to delete last line from /usr/src/bin/sh/builtins.def
>Release-Note:
>Audit-Trail:
>Unformatted:

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