op

Altera recommends the following system configuration: * Pentium II 400 with 512-MB system memory (fa

  op.c		AOK

     "my" variable %s masks earlier declaration in same scope
	my $x;
	my $x ;

     Variable "%s" may be unavailable 
	sub x {
      	    my $x;
      	    sub y {
         	$x
      	    }
   	}

     Variable "%s" will not stay shared 
	sub x {
      	    my $x;
      	    sub y {
         	sub { $x }
      	    }
   	}

     Found = in conditional, should be ==
	1 if $a = 1 ;

     Use of implicit split to @_ is deprecated
	split ;

     Use of implicit split to @_ is deprecated
	$a = split ;

     Useless use of time in void context
     Useless use of a variable in void context
     Useless use of a constant in void context
	time ;
	$a ;
	"abc"

     Applying %s to %s will act on scalar(%s)
	my $a ; my @a = () ; my %a = () ; my $b = \@a ; my $c = \%a ;
	@a =~ /abc/ ;
	@a =~ s/a/b/ ;
	@a =~ tr/a/b/ ;
	@$b =~ /abc/ ;
	@$b =~ s/a/b/ ;
	@$b =~ tr/a/b/ ;
	%a =~ /abc/ ;
	%a =~ s/a/b/ ;
	%a =~ tr/a/b/ ;
	%$c =~ /abc/ ;
	%$c =~ s/a/b/ ;
	%$c =~ tr/a/b/ ;


     Parentheses missing around "my" list at -e line 1.
       my $a, $b = (1,2);
 
     Parentheses missing around "local" list at -e line 1.
       local $a, $b = (1,2);
 
     Bareword found in conditional at -e line 1.
       use warnings 'bareword'; my $x = print(ABC || 1);
 
     Value of %s may be \"0\"; use \"defined\" 
	$x = 1 if $x = <FH> ;
	$x = 1 while $x = <FH> ;

     Subroutine fred redefined at -e line 1.
       sub fred{1;} sub fred{1;}
 
     Constant subroutine %s redefined 
        sub fred() {1;} sub fred() {1;}
 
     Format FRED redefined at /tmp/x line 5.
       format FRED =
       .
       format FRED =
       .
 
     Array @%s missing the @ in argument %d of %s() 
	push fred ;
 
     Hash %%%s missing the %% in argument %d of %s() 
	keys joe ;
 
     Statement unlikely to be reached
     	(Maybe you meant system() when you said exec()?
 	exec "true" ; my $a

     defined(@array) is deprecated
     	(Maybe you should just omit the defined()?)
	my @a ; defined @a ;
	defined (@a = (1,2,3)) ;

     defined(%hash) is deprecated
     	(Maybe you should just omit the defined()?)
	my %h ; defined %h ;
    
     /---/ should probably be written as "---"
        join(/---/, @foo);

    %s() called too early to check prototype		[Perl_peep]
        fred() ; sub fred ($$) {}


    Mandatory Warnings 
    ------------------
    Prototype mismatch:		[cv_ckproto]
        sub fred() ;
        sub fred($) {}

    %s never introduced		[pad_leavemy]	TODO
    Runaway prototype		[newSUB]	TODO
    oops: oopsAV		[oopsAV]	TODO
    oops: oopsHV		[oopsHV]	TODO
    

__END__
# op.c
use warnings 'misc' ;
my $x ;
my $x ;
no warnings 'misc' ;
my $x ;
EXPECT
"my" variable $x masks earlier declaration in same scope at - line 4.
########
# op.c
use warnings 'closure' ;
sub x {
      my $x;
      sub y {
         $x
      }
   }
EXPECT
Variable "$x" will not stay shared at - line 7.
########
# op.c
no warnings 'closure' ;
sub x {
      my $x;
      sub y {
         $x
      }
   }
EXPECT

########
# op.c
use warnings 'closure' ;
sub x {
      our $x;
      sub y {
         $x
      }
   }
EXPECT

########
# op.c
use warnings 'closure' ;
sub x {
      my $x;
      sub y {
         sub { $x }
      }
   }
EXPECT
Variable "$x" may be unavailable at - line 6.
########
# op.c
no warnings 'closure' ;
sub x {
      my $x;
      sub y {
         sub { $x }
      }
   }
EXPECT

########
# op.c
use warnings 'syntax' ;
1 if $a = 1 ;
no warnings 'syntax' ;
1 if $a = 1 ;
EXPECT
Found = in conditional, should be == at - line 3.
########
# op.c
use warnings 'deprecated' ;
split ;
no warnings 'deprecated' ;
split ;
EXPECT
Use of implicit split to @_ is deprecated at - line 3.
########
# op.c
use warnings 'deprecated' ;
$a = split ;
no warnings 'deprecated' ;
$a = split ;
EXPECT
Use of implicit split to @_ is deprecated at - line 3.
########
# op.c
use warnings 'void' ; close STDIN ;
1 x 3 ;			# OP_REPEAT
			# OP_GVSV
wantarray ; 		# OP_WANTARRAY
			# OP_GV
			# OP_PADSV
			# OP_PADAV
			# OP_PADHV
			# OP_PADANY
			# OP_AV2ARYLEN
ref ;			# OP_REF
\@a ;			# OP_REFGEN
\$a ;			# OP_SREFGEN
defined $a ;		# OP_DEFINED
hex $a ;		# OP_HEX
oct $a ;		# OP_OCT
length $a ;		# OP_LENGTH
substr $a,1 ;		# OP_SUBSTR
vec $a,1,2 ;		# OP_VEC
index $a,1,2 ;		# OP_INDEX
rindex $a,1,2 ;		# OP_RINDEX
sprintf $a ;		# OP_SPRINTF
$a[0] ;			# OP_AELEM
			# OP_AELEMFAST
@a[0] ;			# OP_ASLICE
#values %a ;		# OP_VALUES
#keys %a ;		# OP_KEYS
$a{0} ;			# OP_HELEM
@a{0} ;			# OP_HSLICE
unpack "a", "a" ;	# OP_UNPACK
pack $a,"" ;		# OP_PACK
join "" ;		# OP_JOIN
(@a)[0,1] ;		# OP_LSLICE
			# OP_ANONLIST
			# OP_ANONHASH
sort(1,2) ;		# OP_SORT
reverse(1,2) ;		# OP_REVERSE
			# OP_RANGE
			# OP_FLIP
(1 ..2) ;		# OP_FLOP
caller ;		# OP_CALLER
fileno STDIN ;		# OP_FILENO
eof STDIN ;		# OP_EOF
tell STDIN ;		# OP_TELL
readlink 1;		# OP_READLINK
time ;			# OP_TIME
localtime ;		# OP_LOCALTIME
gmtime ;		# OP_GMTIME
eval { getgrnam 1 };	# OP_GGRNAM
eval { getgrgid 1 };	# OP_GGRGID
eval { getpwnam 1 };	# OP_GPWNAM
eval { getpwuid 1 };	# OP_GPWUID
EXPECT
Useless use of repeat (x) in void context at - line 3.
Useless use of wantarray in void context at - line 5.
Useless use of reference-type operator in void context at - line 12.
Useless use of reference constructor in void context at - line 13.
Useless use of single ref constructor in void context at - line 14.
Useless use of defined operator in void context at - line 15.
Useless use of hex in void context at - line 16.
Useless use of oct in void context at - line 17.
Useless use of length in void context at - line 18.
Useless use of substr in void context at - line 19.
Useless use of vec in void context at - line 20.
Useless use of index in void context at - line 21.
Useless use of rindex in void context at - line 22.
Useless use of sprintf in void context at - line 23.
Useless use of array element in void context at - line 24.
Useless use of array slice in void context at - line 26.
Useless use of hash element in void context at - line 29.
Useless use of hash slice in void context at - line 30.
Useless use of unpack in void context at - line 31.
Useless use of pack in void context at - line 32.
Useless use of join or string in void context at - line 33.
Useless use of list slice in void context at - line 34.
Useless use of sort in void context at - line 37.
Useless use of reverse in void context at - line 38.
Useless use of range (or flop) in void context at - line 41.
Useless use of caller in void context at - line 42.
Useless use of fileno in void context at - line 43.
Useless use of eof in void context at - line 44.
Useless use of tell in void context at - line 45.
Useless use of readlink in void context at - line 46.
Useless use of time in void context at - line 47.
Useless use of localtime in void context at - line 48.
Useless use of gmtime in void context at - line 49.
Useless use of getgrnam in void context at - line 50.
Useless use of getgrgid in void context at - line 51.
Useless use of getpwnam in void context at - line 52.
Useless use of getpwuid in void context at - line 53.
########
# op.c
no warnings 'void' ; close STDIN ;
1 x 3 ;			# OP_REPEAT
			# OP_GVSV
wantarray ; 		# OP_WANTARRAY
			# OP_GV
			# OP_PADSV
			# OP_PADAV
			# OP_PADHV
			# OP_PADANY
			# OP_AV2ARYLEN
ref ;			# OP_REF
\@a ;			# OP_REFGEN
\$a ;			# OP_SREFGEN
defined $a ;		# OP_DEFINED
hex $a ;		# OP_HEX
oct $a ;		# OP_OCT
length $a ;		# OP_LENGTH
substr $a,1 ;		# OP_SUBSTR
vec $a,1,2 ;		# OP_VEC
index $a,1,2 ;		# OP_INDEX
rindex $a,1,2 ;		# OP_RINDEX
sprintf $a ;		# OP_SPRINTF
$a[0] ;			# OP_AELEM
			# OP_AELEMFAST
@a[0] ;			# OP_ASLICE
#values %a ;		# OP_VALUES
#keys %a ;		# OP_KEYS
$a{0} ;			# OP_HELEM
@a{0} ;			# OP_HSLICE
unpack "a", "a" ;	# OP_UNPACK
pack $a,"" ;		# OP_PACK
join "" ;		# OP_JOIN
(@a)[0,1] ;		# OP_LSLICE
			# OP_ANONLIST
			# OP_ANONHASH
sort(1,2) ;		# OP_SORT
reverse(1,2) ;		# OP_REVERSE
			# OP_RANGE
			# OP_FLIP
(1 ..2) ;		# OP_FLOP
caller ;		# OP_CALLER
fileno STDIN ;		# OP_FILENO
eof STDIN ;		# OP_EOF
tell STDIN ;		# OP_TELL
readlink 1;		# OP_READLINK
time ;			# OP_TIME
localtime ;		# OP_LOCALTIME
gmtime ;		# OP_GMTIME
eval { getgrnam 1 };	# OP_GGRNAM
eval { getgrgid 1 };	# OP_GGRGID
eval { getpwnam 1 };	# OP_GPWNAM
eval { getpwuid 1 };	# OP_GPWUID
EXPECT
########
# op.c
use warnings 'void' ;
for (@{[0]}) { "$_" }		# check warning isn't duplicated
no warnings 'void' ;
for (@{[0]}) { "$_" }		# check warning isn't duplicated
EXPECT
Useless use of string in void context at - line 3.
########
# op.c
use warnings 'void' ;
use Config ;
BEGIN {
    if ( ! $Config{d_telldir}) {
        print <<EOM ;
SKIPPED
# telldir not present
EOM
        exit 
    }
}
telldir 1 ;		# OP_TELLDIR
no warnings 'void' ;
telldir 1 ;		# OP_TELLDIR
EXPECT
Useless use of telldir in void context at - line 13.
########
# op.c
use warnings 'void' ;
use Config ;
BEGIN {
    if ( ! $Config{d_getppid}) {
        print <<EOM ;
SKIPPED
# getppid not present
EOM
        exit 
    }
}
getppid ;		# OP_GETPPID
no warnings 'void' ;
getppid ;		# OP_GETPPID
EXPECT
Useless use of getppid in void context at - line 13.
########
# op.c
use warnings 'void' ;
use Config ;
BEGIN {
    if ( ! $Config{d_getpgrp}) {
        print <<EOM ;
SKIPPED
# getpgrp not present
EOM
        exit 
    }
}
getpgrp ;		# OP_GETPGRP
no warnings 'void' ;
getpgrp ;		# OP_GETPGRP
EXPECT
Useless use of getpgrp in void context at - line 13.
########
# op.c
use warnings 'void' ;
use Config ;
BEGIN {
    if ( ! $Config{d_times}) {
        print <<EOM ;
SKIPPED
# times not present
EOM
        exit 
    }
}
times ;			# OP_TMS
no warnings 'void' ;
times ;			# OP_TMS
EXPECT
Useless use of times in void context at - line 13.
########
# op.c
use warnings 'void' ;
use Config ;
BEGIN {