Date: Sun, 25 Jul 1999 10:49:36 -0400 (EDT) From: Andrew Arensburger <arensb@clue.umiacs.umd.edu> To: FreeBSD-gnats-submit@freebsd.org Subject: bin/12806: `sh -e' doesn't parse multi-command lines correctly Message-ID: <199907251449.KAA13223@clue.umiacs.umd.edu>
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>Number: 12806
>Category: bin
>Synopsis: `sh -e' doesn't parse multi-command lines correctly
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Jul 25 08:00:00 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator: Andrew Arensburger
>Release: FreeBSD 3.2-RELEASE i386
>Organization:
University of Maryland Institute for Advanced Computer Studies
>Environment:
I've found this bug under every version of FreeBSD where I've
tested it:
FreeBSD 2.2.7-RELEASE i386
FreeBSD 3.1-RELEASE i386
FreeBSD 3.2-RELEASE i386
>Description:
sh(1) says,
: -e errexit
: If not interactive, exit immediately if any untested command
: fails. The exit status of a command is considered to be explic-
: itly tested if the command is used to control an if, elif, while,
: or until; or if the command is the left hand operand of an ``&&''
: or ``||'' operator.
This works fine if the script is of the form
cmd1
cmd2 && cmd3
but not if it is of the form
cmd1; cmd2 && cmd3
One practical upshot is that if you have a Makefile built with
GNU automake, "make clean" does not work.
>How-To-Repeat:
The following two scripts should behave identically:
#!/bin/sh -e
echo before
test foo = bar && echo blah
echo after
#!/bin/sh -e
echo before; test foo = bar && echo blah
echo after
The first one prints
before
after
as expected. The second one, however, prints
before
and exits.
>Fix:
Don't know. If I come up with one, I'll let you know.
>Release-Note:
>Audit-Trail:
>Unformatted:
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