gnu/165811: kill doesn't terminate a process group with the command "kill -- -117" (from man kill)

[Salimane Adjao Moustapha]

>Number:         165811
>Category:       gnu
>Synopsis:       kill doesn't terminate a process group with the command "kill -- -117" (from man kill)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Mar 07 10:40:09 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Salimane Adjao Moustapha
>Release:        FreeBSD 8.1-RELEASE
>Organization:
7k7k.com
>Environment:
FreeBSD Fb-bj162 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19 02:36:49 UTC 2010     root at mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
man kill says :

Terminate the process group with PGID 117:

           kill -- -117


but running it gives error :
>How-To-Repeat:
create a process which have some children processes attached to it
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:
 >kill -- -117
 -: Unknown signal; kill -l lists signals.