bin/181435: sh(1) wait(1) builtin fails after bg job was SIG(STOP|TSTP|CONT) controlled

[Steffen]

>Number:         181435
>Category:       bin
>Synopsis:       sh(1) wait(1) builtin fails after bg job was SIG(STOP|TSTP|CONT) controlled
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Aug 20 17:40:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Steffen
>Release:        10.0-CURRENT
>Organization:
>Environment:
FreeBSD fbsd10 10.0-CURRENT FreeBSD 10.0-CURRENT #0: Sun Jun 23 02:55:37 UTC 2013     root at snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64

>Description:
I simply paste over, i somehow lost the log of the FreeBSD session (sorry!)

* [steffen <at> nhead]$ /bin/sleep 30 &
* [steffen <at> nhead]$ jobs
[1] + Running                 /bin/sleep 30
* [steffen <at> nhead]$ kill -STOP %1
* [steffen <at> nhead]$ jobs
[1] + Running                 /bin/sleep 30
* [steffen <at> nhead]$ wait %1
[1] + Suspended (signal)      /bin/sleep 30
* [steffen <at> nhead]$ kill -CONT %1
* [steffen <at> nhead]$ jobs
[1] + Suspended (signal)      /bin/sleep 30
* [steffen <at> nhead]$ wait %1
* [steffen <at> nhead]$ wait
* [steffen <at> nhead]$ jobs
[1] + Suspended (signal)      /bin/sleep 30
* [steffen <at> nhead]$ 
[1]   Done                    /bin/sleep 30
* [steffen <at> nhead]$ 


Of the tested mksh(1), NetBSD sh(1), dash(1), FreeBSD sh(1), Mac OS X /bin/ksh and bash(1), only the latter two "do the right thing" (satisfy me, that is):


Mac OS X /bin/ksh(1):

?0[steffen <at> sherwood]$ /bin/sleep 30 &
[1]	43762
?0[steffen <at> sherwood]$ jobs
[1] +  Running                 /bin/sleep 30 &
?0[steffen <at> sherwood]$ wait  
^C?258[steffen <at> sherwood]$ jobs
[1] +  Running                 /bin/sleep 30 &
?0[steffen <at> sherwood]$ kill -STOP %1
?0[steffen <at> sherwood]$ jobs         
[1] +  Running                 /bin/sleep 30 &
?0[steffen <at> sherwood]$ wait %1
[1] + Stopped (SIGSTOP)        /bin/sleep 30 &
?0[steffen <at> sherwood]$ kill -CONT %1
?0[steffen <at> sherwood]$ jobs
[1] +  Running                 /bin/sleep 30 &
?0[steffen <at> sherwood]$ wait %1

^C?258[steffen <at> sherwood]$ jobs
?0[steffen <at> sherwood]$ 


bash(1):

?0[steffen <at> sherwood]$ /bin/sleep 30 &
[1] 43752
?0[steffen <at> sherwood]$ wait %1
^C
?1[steffen <at> sherwood]$ kill -STOP %1
?0[steffen <at> sherwood]$ jobs
[1]+  Running                 /bin/sleep 30 &
?0[steffen <at> sherwood]$ wait %1

[1]+  Stopped                 /bin/sleep 30
?145[steffen <at> sherwood]$ wait %1
bash: warning: wait_for_job: job 1 is stopped
?145[steffen <at> sherwood]$ kill -CONT %1
?0[steffen <at> sherwood]$ jobs
[1]+  Running                 /bin/sleep 30 &
?0[steffen <at> sherwood]$ wait %1
^C
?1[steffen <at> sherwood]$ jobs
[1]+  Running                 /bin/sleep 30 &
?0[steffen <at> sherwood]$ 
[1]+  Done                    /bin/sleep 30
>How-To-Repeat:

>Fix:
no. sorry.

>Release-Note:
>Audit-Trail:
>Unformatted: