dnl @ ../doc/m4.texi:6751: Origin of test
dnl @ expected status: 0
dnl @ extra options: 
dnl @ Copyright (C) 2006, 2007, 2008, 2009 Free Software
dnl @ Foundation, Inc.
dnl @ This file is free software; the Free Software Foundation
dnl @ gives unlimited permission to copy and/or distribute it
dnl @ with or without modifications, as long as this notice
dnl @ is preserved.
dnl This test assumes kill is a shell builtin, and that signals are
dnl recognizable.
ifdef(`__unix__', ,
      `errprint(` skipping: syscmd does not have unix semantics
')m4exit(`77')')dnl
changequote(`[', `]')
dnl @result{}
syscmd([/bin/sh -c 'kill -9 $$'; st=$?; test $st = 137 || test $st = 265])
dnl @result{}
ifelse(sysval, [0], , [errprint([ skipping: shell does not send signal 9
])m4exit([77])])dnl
syscmd([kill -9 $$])
dnl @result{}
sysval
dnl @result{}2304
syscmd()
dnl @result{}
sysval
dnl @result{}0
esyscmd([kill -9 $$])
dnl @result{}
sysval
dnl @result{}2304