FM / perl5

/usr/share/perl5

Name	Size	Mode	Actions
B/	-	0755	rm
Class/	-	0755	rm
Config/	-	0755	rm
DBM_Filter/	-	0755	rm
encoding/	-	0755	rm
ExtUtils/	-	0755	rm
File/	-	0755	rm
Getopt/	-	0755	rm
I18N/	-	0755	rm
IPC/	-	0755	rm
Math/	-	0755	rm
Net/	-	0755	rm
overload/	-	0755	rm
Pod/	-	0755	rm
pod/	-	0755	rm
Search/	-	0755	rm
Term/	-	0755	rm
Text/	-	0755	rm
Thread/	-	0755	rm
Tie/	-	0755	rm
Time/	-	0755	rm
Unicode/	-	0755	rm
unicore/	-	0755	rm
URI/	-	0755	rm
User/	-	0755	rm
vendor_perl/	-	0755	rm
warnings/	-	0755	rm
AnyDBM_File.pm	2618	0644	edit dl rm
AutoLoader.pm	15797	0644	edit dl rm
AutoSplit.pm	19637	0644	edit dl rm
autouse.pm	4238	0644	edit dl rm
base.pm	10980	0644	edit dl rm
Benchmark.pm	31025	0644	edit dl rm
blib.pm	2086	0644	edit dl rm
bytes.pm	3754	0644	edit dl rm
bytes_heavy.pl	758	0644	edit dl rm
charnames.pm	20867	0644	edit dl rm
CORE.pod	3188	0644	edit dl rm
DB.pm	18922	0644	edit dl rm
DBM_Filter.pm	14385	0644	edit dl rm
deprecate.pm	3079	0644	edit dl rm
diagnostics.pm	19038	0644	edit dl rm
DirHandle.pm	1556	0644	edit dl rm
Dumpvalue.pm	17556	0644	edit dl rm
dumpvar.pl	15555	0644	edit dl rm
English.pm	4761	0644	edit dl rm
feature.pm	17085	0644	edit dl rm
fields.pm	9489	0644	edit dl rm
FileCache.pm	5572	0644	edit dl rm
FileHandle.pm	6784	0644	edit dl rm
filetest.pm	4003	0644	edit dl rm
FindBin.pm	4561	0644	edit dl rm
if.pm	3340	0644	edit dl rm
integer.pm	3254	0644	edit dl rm
Internals.pod	2576	0644	edit dl rm
less.pm	3204	0644	edit dl rm
locale.pm	4855	0644	edit dl rm
meta_notation.pm	2117	0644	edit dl rm
NEXT.pm	18846	0644	edit dl rm
overload.pm	53314	0644	edit dl rm
overloading.pm	1808	0644	edit dl rm
perl5db.pl	316420	0644	edit dl rm
PerlIO.pm	10459	0644	edit dl rm
Safe.pm	25082	0644	edit dl rm
SelectSaver.pm	1076	0644	edit dl rm
sigtrap.pm	7606	0644	edit dl rm
sort.pm	6081	0644	edit dl rm
strict.pm	4738	0644	edit dl rm
subs.pm	848	0644	edit dl rm
Symbol.pm	4799	0644	edit dl rm
Thread.pm	8287	0644	edit dl rm
UNIVERSAL.pm	6594	0644	edit dl rm
URI.pm	34790	0644	edit dl rm
utf8.pm	9116	0644	edit dl rm
utf8_heavy.pl	31615	0644	edit dl rm
vars.pm	2414	0644	edit dl rm
vmsish.pm	4313	0644	edit dl rm
warnings.pm	44756	0644	edit dl rm
XSLoader.pm	11267	0644	edit dl rm
_charnames.pm	33166	0644	edit dl rm

Edit: /usr/share/perl5/strict.pm (4738B)

package strict;

$strict::VERSION = "1.11";

my ( %bitmask, %explicit_bitmask );

BEGIN {
    # Verify that we're called correctly so that strictures will work.
    # Can't use Carp, since Carp uses us!
    # see also warnings.pm.
    die sprintf "Incorrect use of pragma '%s' at %s line %d.\n", __PACKAGE__, +(caller)[1,2]
        if __FILE__ !~ ( '(?x) \b     '.__PACKAGE__.'  \.pmc? \z' )
        && __FILE__ =~ ( '(?x) \b (?i:'.__PACKAGE__.') \.pmc? \z' );

%bitmask = (
        refs => 0x00000002,
        subs => 0x00000200,
        vars => 0x00000400,
    );

%explicit_bitmask = (
        refs => 0x00000020,
        subs => 0x00000040,
        vars => 0x00000080,
    );

my $bits = 0;
    $bits |= $_ for values %bitmask;

my $inline_all_bits = $bits;
    *all_bits = sub () { $inline_all_bits };

$bits = 0;
    $bits |= $_ for values %explicit_bitmask;

my $inline_all_explicit_bits = $bits;
    *all_explicit_bits = sub () { $inline_all_explicit_bits };
}

sub bits {
    my $bits = 0;
    my @wrong;
    foreach my $s (@_) {
        if (exists $bitmask{$s}) {
            $^H |= $explicit_bitmask{$s};

$bits |= $bitmask{$s};
        }
        else {
            push @wrong, $s;
        }
    }
    if (@wrong) {
        require Carp;
        Carp::croak("Unknown 'strict' tag(s) '@wrong'");
    }
    $bits;
}

sub import {
    shift;
    $^H |= @_ ? &bits : all_bits | all_explicit_bits;
}

sub unimport {
    shift;

if (@_) {
        $^H &= ~&bits;
    }
    else {
        $^H &= ~all_bits;
        $^H |= all_explicit_bits;
    }
}

1;
__END__

=head1 NAME

strict - Perl pragma to restrict unsafe constructs

=head1 SYNOPSIS

use strict;

use strict "vars";
    use strict "refs";
    use strict "subs";

use strict;
    no strict "vars";

=head1 DESCRIPTION

The C<strict> pragma disables certain Perl expressions that could behave
unexpectedly or are difficult to debug, turning them into errors. The
effect of this pragma is limited to the current file or scope block.

If no import list is supplied, all possible restrictions are assumed.
(This is the safest mode to operate in, but is sometimes too strict for
casual programming.)  Currently, there are three possible things to be
strict about:  "subs", "vars", and "refs".

=over 6

=item C<strict refs>

This generates a runtime error if you 
use symbolic references (see L<perlref>).

use strict 'refs';
    $ref = \$foo;
    print $$ref;	# ok
    $ref = "foo";
    print $$ref;	# runtime error; normally ok
    $file = "STDOUT";
    print $file "Hi!";	# error; note: no comma after $file

There is one exception to this rule:

$bar = \&{'foo'};
    &$bar;

is allowed so that C<goto &$AUTOLOAD> would not break under stricture.

=item C<strict vars>

This generates a compile-time error if you access a variable that was
neither explicitly declared (using any of C<my>, C<our>, C<state>, or C<use
vars>) nor fully qualified.  (Because this is to avoid variable suicide
problems and subtle dynamic scoping issues, a merely C<local> variable isn't
good enough.)  See L<perlfunc/my>, L<perlfunc/our>, L<perlfunc/state>,
L<perlfunc/local>, and L<vars>.

use strict 'vars';
    $X::foo = 1;	 # ok, fully qualified
    my $foo = 10;	 # ok, my() var
    local $baz = 9;	 # blows up, $baz not declared before

package Cinna;
    our $bar;			# Declares $bar in current package
    $bar = 'HgS';		# ok, global declared via pragma

The local() generated a compile-time error because you just touched a global
name without fully qualifying it.

Because of their special use by sort(), the variables $a and $b are
exempted from this check.

=item C<strict subs>

This disables the poetry optimization, generating a compile-time error if
you try to use a bareword identifier that's not a subroutine, unless it
is a simple identifier (no colons) and that it appears in curly braces or
on the left hand side of the C<< => >> symbol.

use strict 'subs';
    $SIG{PIPE} = Plumber;   # blows up
    $SIG{PIPE} = "Plumber"; # fine: quoted string is always ok
    $SIG{PIPE} = \&Plumber; # preferred form

=back

See L<perlmodlib/Pragmatic Modules>.

=head1 HISTORY

C<strict 'subs'>, with Perl 5.6.1, erroneously permitted to use an unquoted
compound identifier (e.g. C<Foo::Bar>) as a hash key (before C<< => >> or
inside curlies), but without forcing it always to a literal string.

Starting with Perl 5.8.1 strict is strict about its restrictions:
if unknown restrictions are used, the strict pragma will abort with

Unknown 'strict' tag(s) '...'

As of version 1.04 (Perl 5.10), strict verifies that it is used as
"strict" to avoid the dreaded Strict trap on case insensitive file
systems.

=cut

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