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Date:      Sun, 16 Oct 2022 05:09:15 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 267111] xargs returns incorrect exit code when run in parallel mode
Message-ID:  <bug-267111-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D267111

            Bug ID: 267111
           Summary: xargs returns incorrect exit code when run in parallel
                    mode
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: misc
          Assignee: bugs@FreeBSD.org
          Reporter: duliujimmy@hotmail.com

when xargs runs in parallel mode (using -P flag), it may sometimes return
incorrect exit code.=20

The following code shows current (incorrect) behaviour: /bin directory exis=
ts,
/foo directory does not exist. `echo /bin /foo | xargs -n1 -P2 test -d`
sometimes return 0 sometimes return 1:

```
root@freebsd:~ # test -d /bin
root@freebsd:~ # echo $?
0
root@freebsd:~ # test -d /foo
root@freebsd:~ # echo $?
1
root@freebsd:~ # echo /bin /foo | xargs -n1 -P2 test -d
root@freebsd:~ # echo $?
0
root@freebsd:~ # echo /bin /foo | xargs -n1 -P2 test -d
root@freebsd:~ # echo $?
1
root@freebsd:~ # echo /bin /foo | xargs -n1 -P2 test -d
root@freebsd:~ # echo $?
0
```

--=20
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