pp_sys.c 	AOK

  untie attempted while %d inner references still exist
    sub TIESCALAR { bless [] } ; tie $a, 'main'; untie $a ;

  Filehandle only opened for input
    format STDIN =
    .
    write STDIN;

  Write on closed filehandle
    format STDIN =
    .
    close STDIN;
    write STDIN ;

  page overflow	

  Filehandle %s never opened
    $a = "abc"; printf $a "fred"

  Filehandle %s opened only for input
    $a = "abc"; 
    printf $a "fred"

  printf on closed filehandle %s
    close STDIN ;
    printf STDIN "fred"

  Syswrite on closed filehandle
    close STDIN; 
    syswrite STDIN, "fred", 1;

  Send on closed socket
    close STDIN; 
    send STDIN, "fred", 1

  bind() on closed fd
    close STDIN; 
    bind STDIN, "fred" ;


  connect() on closed fd
    close STDIN; 
    connect STDIN, "fred" ;

  listen() on closed fd
    close STDIN; 
    listen STDIN, 2;

  accept() on closed fd
    close STDIN; 
    accept STDIN, "fred" ;

  shutdown() on closed fd
    close STDIN; 
    shutdown STDIN, 0;

  [gs]etsockopt() on closed fd
    close STDIN; 
    setsockopt STDIN, 1,2,3;
    getsockopt STDIN, 1,2;

  get{sock, peer}name() on closed fd
    close STDIN; 
    getsockname STDIN;
    getpeername STDIN;

  warn(warn_nl, "stat");

  Test on unopened file <%s>
	close STDIN ; -T STDIN ;

  warn(warn_nl, "open");
    -T "abc\ndef" ;

  

__END__
# pp_sys.c
use warning 'untie' ;
sub TIESCALAR { bless [] } ; 
$b = tie $a, 'main'; 
untie $a ;
EXPECT
untie attempted while 1 inner references still exist at - line 5.
########
# pp_sys.c
use warning 'io' ;
format STDIN =
.
write STDIN;
EXPECT
Filehandle only opened for input at - line 5.
########
# pp_sys.c
use warning 'closed' ;
format STDIN =
.
close STDIN;
write STDIN;
EXPECT
Write on closed filehandle at - line 6.
########
# pp_sys.c
use warning 'io' ;
format STDOUT_TOP =
abc
.
format STDOUT =
def
ghi
.
$= = 1 ;
$- =1 ;
open STDOUT, ">".($^O eq 'VMS'? 'NL:' : '/dev/null') ;
write ;
EXPECT
page overflow at - line 13.
########
# pp_sys.c
use warning 'unopened' ;
$a = "abc"; 
printf $a "fred"
EXPECT
Filehandle main::abc never opened at - line 4.
########
# pp_sys.c
use warning 'closed' ;
close STDIN ;
printf STDIN "fred"
EXPECT
printf on closed filehandle main::STDIN at - line 4.
########
# pp_sys.c
use warning 'io' ;
printf STDIN "fred"
EXPECT
Filehandle main::STDIN opened only for input at - line 3.
########
# pp_sys.c
use warning 'closed' ;
close STDIN; 
syswrite STDIN, "fred", 1;
EXPECT
Syswrite on closed filehandle at - line 4.
########
# pp_sys.c
use warning 'io' ;
use Config; 
BEGIN { 
  if ( $^O ne 'VMS' and ! $Config{d_socket}) {
    print <<EOM ;
SKIPPED
# send not present
# bind not present
# connect not present
# accept not present
# shutdown not present
# setsockopt not present
# getsockopt not present
# getsockname not present
# getpeername not present
EOM
    exit ;
  } 
}
close STDIN; 
send STDIN, "fred", 1;
bind STDIN, "fred" ;
connect STDIN, "fred" ;
listen STDIN, 2;
accept STDIN, "fred" ;
shutdown STDIN, 0;
setsockopt STDIN, 1,2,3;
getsockopt STDIN, 1,2;
getsockname STDIN;
getpeername STDIN;
EXPECT
Send on closed socket at - line 22.
bind() on closed fd at - line 23.
connect() on closed fd at - line 24.
listen() on closed fd at - line 25.
accept() on closed fd at - line 26.
shutdown() on closed fd at - line 27.
[gs]etsockopt() on closed fd at - line 28.
[gs]etsockopt() on closed fd at - line 29.
get{sock, peer}name() on closed fd at - line 30.
get{sock, peer}name() on closed fd at - line 31.
########
# pp_sys.c
use warning 'newline' ;
stat "abc\ndef";
EXPECT
Unsuccessful stat on filename containing newline at - line 3.
########
# pp_sys.c
use warning 'unopened' ;
close STDIN ; 
-T STDIN ;
EXPECT
Test on unopened file <STDIN> at - line 4.
########
# pp_sys.c
use warning 'newline' ;
-T "abc\ndef" ;
EXPECT
Unsuccessful open on filename containing newline at - line 3.