[perl5.git] / t / op / local.t

#!./perl

BEGIN {
    chdir 't' if -d 't';
    @INC = qw(. ../lib);
    require './test.pl';
}
plan tests => 296;

my $list_assignment_supported = 1;

#mg.c says list assignment not supported on VMS, EPOC, and SYMBIAN.
$list_assignment_supported = 0 if ($^O eq 'VMS');


sub foo {
    local($a, $b) = @_;
    local($c, $d);
    $c = "c 3";
    $d = "d 4";
    { local($a,$c) = ("a 9", "c 10"); ($x, $y) = ($a, $c); }
    is($a, "a 1");
    is($b, "b 2");
    $c, $d;
}

$a = "a 5";
$b = "b 6";
$c = "c 7";
$d = "d 8";

my @res;
@res =  &foo("a 1","b 2");
is($res[0], "c 3");
is($res[1], "d 4");

is($a, "a 5");
is($b, "b 6");
is($c, "c 7");
is($d, "d 8");
is($x, "a 9");
is($y, "c 10");

# same thing, only with arrays and associative arrays

sub foo2 {
    local($a, @b) = @_;
    local(@c, %d);
    @c = "c 3";
    $d{''} = "d 4";
    { local($a,@c) = ("a 19", "c 20"); ($x, $y) = ($a, @c); }
    is($a, "a 1");
    is("@b", "b 2");
    $c[0], $d{''};
}

$a = "a 5";
@b = "b 6";
@c = "c 7";
$d{''} = "d 8";

@res = &foo2("a 1","b 2");
is($res[0], "c 3");
is($res[1], "d 4");

is($a, "a 5");
is("@b", "b 6");
is($c[0], "c 7");
is($d{''}, "d 8");
is($x, "a 19");
is($y, "c 20");


eval 'local($$e)';
like($@, qr/Can't localize through a reference/);

eval '$e = []; local(@$e)';
like($@, qr/Can't localize through a reference/);

eval '$e = {}; local(%$e)';
like($@, qr/Can't localize through a reference/);

# Array and hash elements

@a = ('a', 'b', 'c');
{
    local($a[1]) = 'foo';
    local($a[2]) = $a[2];
    is($a[1], 'foo');
    is($a[2], 'c');
    undef @a;
}
is($a[1], 'b');
is($a[2], 'c');
ok(!defined $a[0]);

@a = ('a', 'b', 'c');
{
    local($a[4]) = 'x';
    ok(!defined $a[3]);
    is($a[4], 'x');
}
is(scalar(@a), 3);
ok(!exists $a[3]);
ok(!exists $a[4]);

@a = ('a', 'b', 'c');
{
    local($a[5]) = 'z';
    $a[4] = 'y';
    ok(!defined $a[3]);
    is($a[4], 'y');
    is($a[5], 'z');
}
is(scalar(@a), 5);
ok(!defined $a[3]);
is($a[4], 'y');
ok(!exists $a[5]);

@a = ('a', 'b', 'c');
{
    local(@a[4,6]) = ('x', 'z');
    ok(!defined $a[3]);
    is($a[4], 'x');
    ok(!defined $a[5]);
    is($a[6], 'z');
}
is(scalar(@a), 3);
ok(!exists $a[3]);
ok(!exists $a[4]);
ok(!exists $a[5]);
ok(!exists $a[6]);

@a = ('a', 'b', 'c');
{
    local(@a[4,6]) = ('x', 'z');
    $a[5] = 'y';
    ok(!defined $a[3]);
    is($a[4], 'x');
    is($a[5], 'y');
    is($a[6], 'z');
}
is(scalar(@a), 6);
ok(!defined $a[3]);
ok(!defined $a[4]);
is($a[5], 'y');
ok(!exists $a[6]);

@a = ('a', 'b', 'c');
{
    local($a[1]) = "X";
    shift @a;
}
is($a[0].$a[1], "Xb");
{
    my $d = "@a";
    local @a = @a;
    is("@a", $d);
}

@a = ('a', 'b', 'c');
$a[4] = 'd';
{
    delete local $a[1];
    is(scalar(@a), 5);
    is($a[0], 'a');
    ok(!exists($a[1]));
    is($a[2], 'c');
    ok(!exists($a[3]));
    is($a[4], 'd');

    ok(!exists($a[888]));
    delete local $a[888];
    is(scalar(@a), 5);
    ok(!exists($a[888]));

    ok(!exists($a[999]));
    my ($d, $zzz) = delete local @a[4, 999];
    is(scalar(@a), 3);
    ok(!exists($a[4]));
    ok(!exists($a[999]));
    is($d, 'd');
    is($zzz, undef);

    my $c = delete local $a[2];
    is(scalar(@a), 1);
    ok(!exists($a[2]));
    is($c, 'c');

    $a[888] = 'yyy';
    $a[999] = 'zzz';
}
is(scalar(@a), 5);
is($a[0], 'a');
is($a[1], 'b');
is($a[2], 'c');
ok(!defined($a[3]));
is($a[4], 'd');
ok(!exists($a[5]));
ok(!exists($a[888]));
ok(!exists($a[999]));

%h = (a => 1, b => 2, c => 3, d => 4);
{
    delete local $h{b};
    is(scalar(keys(%h)), 3);
    is($h{a}, 1);
    ok(!exists($h{b}));
    is($h{c}, 3);
    is($h{d}, 4);

    ok(!exists($h{yyy}));
    delete local $h{yyy};
    is(scalar(keys(%h)), 3);
    ok(!exists($h{yyy}));

    ok(!exists($h{zzz}));
    my ($d, $zzz) = delete local @h{qw/d zzz/};
    is(scalar(keys(%h)), 2);
    ok(!exists($h{d}));
    ok(!exists($h{zzz}));
    is($d, 4);
    is($zzz, undef);

    my $c = delete local $h{c};
    is(scalar(keys(%h)), 1);
    ok(!exists($h{c}));
    is($c, 3);

    $h{yyy} = 888;
    $h{zzz} = 999;
}
is(scalar(keys(%h)), 4);
is($h{a}, 1);
is($h{b}, 2);
is($h{c}, 3);
ok($h{d}, 4);
ok(!exists($h{yyy}));
ok(!exists($h{zzz}));

%h = ('a' => { 'b' => 1 }, 'c' => 2);
{
    my $a = delete local $h{a};
    is(scalar(keys(%h)), 1);
    ok(!exists($h{a}));
    is($h{c}, 2);
    is(scalar(keys(%$a)), 1);

    my $b = delete local $a->{b};
    is(scalar(keys(%$a)), 0);
    is($b, 1);

    $a->{d} = 3;
}
is(scalar(keys(%h)), 2);
{
    my $a = $h{a};
    is(scalar(keys(%$a)), 2);
    is($a->{b}, 1);
    is($a->{d}, 3);
}
is($h{c}, 2);

%h = ('a' => 1, 'b' => 2, 'c' => 3);
{
    local($h{'a'}) = 'foo';
    local($h{'b'}) = $h{'b'};
    is($h{'a'}, 'foo');
    is($h{'b'}, 2);
    local($h{'c'});
    delete $h{'c'};
}
is($h{'a'}, 1);
is($h{'b'}, 2);
{
    my $d = join("\n", map { "$_=>$h{$_}" } sort keys %h);
    local %h = %h;
    is(join("\n", map { "$_=>$h{$_}" } sort keys %h), $d);
}
is($h{'c'}, 3);

# check for scope leakage
$a = 'outer';
if (1) { local $a = 'inner' }
is($a, 'outer');

# see if localization works when scope unwinds
local $m = 5;
eval {
    for $m (6) {
	local $m = 7;
	die "bye";
    }
};
is($m, 5);

# see if localization works on tied arrays
{
    package TA;
    sub TIEARRAY { bless [], $_[0] }
    sub STORE { print "# STORE [@_]\n"; $_[0]->[$_[1]] = $_[2] }
    sub FETCH { my $v = $_[0]->[$_[1]]; print "# FETCH [@_=$v]\n"; $v }
    sub EXISTS { print "# EXISTS [@_]\n"; exists $_[0]->[$_[1]]; }
    sub DELETE { print "# DELETE [@_]\n"; delete $_[0]->[$_[1]]; }
    sub CLEAR { print "# CLEAR [@_]\n"; @{$_[0]} = (); }
    sub FETCHSIZE { scalar(@{$_[0]}) }
    sub SHIFT { shift (@{$_[0]}) }
    sub EXTEND {}
}

tie @a, 'TA';
@a = ('a', 'b', 'c');
{
    local($a[1]) = 'foo';
    local($a[2]) = $a[2];
    is($a[1], 'foo');
    is($a[2], 'c');
    @a = ();
}
is($a[1], 'b');
is($a[2], 'c');
ok(!defined $a[0]);
{
    my $d = "@a";
    local @a = @a;
    is("@a", $d);
}

# local() should preserve the existenceness of tied array elements
@a = ('a', 'b', 'c');
{
    local($a[4]) = 'x';
    ok(!defined $a[3]);
    is($a[4], 'x');
}
is(scalar(@a), 3);
ok(!exists $a[3]);
ok(!exists $a[4]);

@a = ('a', 'b', 'c');
{
    local($a[5]) = 'z';
    $a[4] = 'y';
    ok(!defined $a[3]);
    is($a[4], 'y');
    is($a[5], 'z');
}
is(scalar(@a), 5);
ok(!defined $a[3]);
is($a[4], 'y');
ok(!exists $a[5]);

@a = ('a', 'b', 'c');
{
    local(@a[4,6]) = ('x', 'z');
    ok(!defined $a[3]);
    is($a[4], 'x');
    ok(!defined $a[5]);
    is($a[6], 'z');
}
is(scalar(@a), 3);
ok(!exists $a[3]);
ok(!exists $a[4]);
ok(!exists $a[5]);
ok(!exists $a[6]);

@a = ('a', 'b', 'c');
{
    local(@a[4,6]) = ('x', 'z');
    $a[5] = 'y';
    ok(!defined $a[3]);
    is($a[4], 'x');
    is($a[5], 'y');
    is($a[6], 'z');
}
is(scalar(@a), 6);
ok(!defined $a[3]);
ok(!defined $a[4]);
is($a[5], 'y');
ok(!exists $a[6]);

@a = ('a', 'b', 'c');
$a[4] = 'd';
{
    delete local $a[1];
    is(scalar(@a), 5);
    is($a[0], 'a');
    ok(!exists($a[1]));
    is($a[2], 'c');
    ok(!exists($a[3]));
    is($a[4], 'd');

    ok(!exists($a[888]));
    delete local $a[888];
    is(scalar(@a), 5);
    ok(!exists($a[888]));

    ok(!exists($a[999]));
    my ($d, $zzz) = delete local @a[4, 999];
    is(scalar(@a), 3);
    ok(!exists($a[4]));
    ok(!exists($a[999]));
    is($d, 'd');
    is($zzz, undef);

    my $c = delete local $a[2];
    is(scalar(@a), 1);
    ok(!exists($a[2]));
    is($c, 'c');

    $a[888] = 'yyy';
    $a[999] = 'zzz';
}
is(scalar(@a), 5);
is($a[0], 'a');
is($a[1], 'b');
is($a[2], 'c');
ok(!defined($a[3]));
is($a[4], 'd');
ok(!exists($a[5]));
ok(!exists($a[888]));
ok(!exists($a[999]));

# see if localization works on tied hashes
{
    package TH;
    sub TIEHASH { bless {}, $_[0] }
    sub STORE { print "# STORE [@_]\n"; $_[0]->{$_[1]} = $_[2] }
    sub FETCH { my $v = $_[0]->{$_[1]}; print "# FETCH [@_=$v]\n"; $v }
    sub EXISTS { print "# EXISTS [@_]\n"; exists $_[0]->{$_[1]}; }
    sub DELETE { print "# DELETE [@_]\n"; delete $_[0]->{$_[1]}; }
    sub CLEAR { print "# CLEAR [@_]\n"; %{$_[0]} = (); }
    sub FIRSTKEY { print "# FIRSTKEY [@_]\n"; keys %{$_[0]}; each %{$_[0]} }
    sub NEXTKEY { print "# NEXTKEY [@_]\n"; each %{$_[0]} }
}

tie %h, 'TH';
%h = ('a' => 1, 'b' => 2, 'c' => 3);

{
    local($h{'a'}) = 'foo';
    local($h{'b'}) = $h{'b'};
    local($h{'y'});
    local($h{'z'}) = 33;
    is($h{'a'}, 'foo');
    is($h{'b'}, 2);
    local($h{'c'});
    delete $h{'c'};
}
is($h{'a'}, 1);
is($h{'b'}, 2);
is($h{'c'}, 3);
# local() should preserve the existenceness of tied hash elements
ok(! exists $h{'y'});
ok(! exists $h{'z'});
TODO: {
    todo_skip("Localize entire tied hash");
    my $d = join("\n", map { "$_=>$h{$_}" } sort keys %h);
    local %h = %h;
    is(join("\n", map { "$_=>$h{$_}" } sort keys %h), $d);
}

%h = (a => 1, b => 2, c => 3, d => 4);
{
    delete local $h{b};
    is(scalar(keys(%h)), 3);
    is($h{a}, 1);
    ok(!exists($h{b}));
    is($h{c}, 3);
    is($h{d}, 4);

    ok(!exists($h{yyy}));
    delete local $h{yyy};
    is(scalar(keys(%h)), 3);
    ok(!exists($h{yyy}));

    ok(!exists($h{zzz}));
    my ($d, $zzz) = delete local @h{qw/d zzz/};
    is(scalar(keys(%h)), 2);
    ok(!exists($h{d}));
    ok(!exists($h{zzz}));
    is($d, 4);
    is($zzz, undef);

    my $c = delete local $h{c};
    is(scalar(keys(%h)), 1);
    ok(!exists($h{c}));
    is($c, 3);

    $h{yyy} = 888;
    $h{zzz} = 999;
}
is(scalar(keys(%h)), 4);
is($h{a}, 1);
is($h{b}, 2);
is($h{c}, 3);
ok($h{d}, 4);
ok(!exists($h{yyy}));
ok(!exists($h{zzz}));

@a = ('a', 'b', 'c');
{
    local($a[1]) = "X";
    shift @a;
}
is($a[0].$a[1], "Xb");

# now try the same for %SIG

$SIG{TERM} = 'foo';
$SIG{INT} = \&foo;
$SIG{__WARN__} = $SIG{INT};
{
    local($SIG{TERM}) = $SIG{TERM};
    local($SIG{INT}) = $SIG{INT};
    local($SIG{__WARN__}) = $SIG{__WARN__};
    is($SIG{TERM}, 'main::foo');
    is($SIG{INT}, \&foo);
    is($SIG{__WARN__}, \&foo);
    local($SIG{INT});
    delete $SIG{__WARN__};
}
is($SIG{TERM}, 'main::foo');
is($SIG{INT}, \&foo);
is($SIG{__WARN__}, \&foo);
{
    my $d = join("\n", map { "$_=>$SIG{$_}" } sort keys %SIG);
    local %SIG = %SIG;
    is(join("\n", map { "$_=>$SIG{$_}" } sort keys %SIG), $d);
}

# and for %ENV

$ENV{_X_} = 'a';
$ENV{_Y_} = 'b';
$ENV{_Z_} = 'c';
{
    local($ENV{_A_});
    local($ENV{_B_}) = 'foo';
    local($ENV{_X_}) = 'foo';
    local($ENV{_Y_}) = $ENV{_Y_};
    is($ENV{_X_}, 'foo');
    is($ENV{_Y_}, 'b');
    local($ENV{_Z_});
    delete $ENV{_Z_};
}
is($ENV{_X_}, 'a');
is($ENV{_Y_}, 'b');
is($ENV{_Z_}, 'c');
# local() should preserve the existenceness of %ENV elements
ok(! exists $ENV{_A_});
ok(! exists $ENV{_B_});

SKIP: {
    skip("Can't make list assignment to \%ENV on this system")
	unless $list_assignment_supported;
    my $d = join("\n", map { "$_=>$ENV{$_}" } sort keys %ENV);
    local %ENV = %ENV;
    is(join("\n", map { "$_=>$ENV{$_}" } sort keys %ENV), $d);
}

# does implicit localization in foreach skip magic?

$_ = "o 0,o 1,";
my $iter = 0;
while (/(o.+?),/gc) {
    is($1, "o $iter");
    foreach (1..1) { $iter++ }
    if ($iter > 2) { fail("endless loop"); last; }
}

{
    package UnderScore;
    sub TIESCALAR { bless \my $self, shift }
    sub FETCH { die "read  \$_ forbidden" }
    sub STORE { die "write \$_ forbidden" }
    tie $_, __PACKAGE__;
    my @tests = (
	"Nesting"     => sub { print '#'; for (1..3) { print }
			       print "\n" },			1,
	"Reading"     => sub { print },				0,
	"Matching"    => sub { $x = /badness/ },		0,
	"Concat"      => sub { $_ .= "a" },			0,
	"Chop"        => sub { chop },				0,
	"Filetest"    => sub { -x },				0,
	"Assignment"  => sub { $_ = "Bad" },			0,
	# XXX whether next one should fail is debatable
	"Local \$_"   => sub { local $_  = 'ok?'; print },	0,
	"for local"   => sub { for("#ok?\n"){ print } },	1,
    );
    while ( ($name, $code, $ok) = splice(@tests, 0, 3) ) {
	eval { &$code };
        main::ok(($ok xor $@), "Underscore '$name'");
    }
    untie $_;
}

{
    # BUG 20001205.22
    my %x;
    $x{a} = 1;
    { local $x{b} = 1; }
    ok(! exists $x{b});
    { local @x{c,d,e}; }
    ok(! exists $x{c});
}

# local() and readonly magic variables

eval { local $1 = 1 };
like($@, qr/Modification of a read-only value attempted/);

eval { for ($1) { local $_ = 1 } };
like($@, qr/Modification of a read-only value attempted/);

# make sure $1 is still read-only
eval { for ($1) { local $_ = 1 } };
like($@, qr/Modification of a read-only value attempted/);

# The s/// adds 'g' magic to $_, but it should remain non-readonly
eval { for("a") { for $x (1,2) { local $_="b"; s/(.*)/+$1/ } } };
is($@, "");

# RT #4342 Special local() behavior for $[
{
    no warnings 'deprecated';
    local $[ = 1;
    ok(1 == $[, 'lexcical scope of local $[');
    f();
}

sub f { ok(0 == $[); }

# sub localisation
{
	package Other;

	sub f1 { "f1" }
	sub f2 { "f2" }

	no warnings "redefine";
	{
		local *f1 = sub  { "g1" };
		::ok(f1() eq "g1", "localised sub via glob");
	}
	::ok(f1() eq "f1", "localised sub restored");
	{
		local $Other::{"f1"} = sub { "h1" };
		::ok(f1() eq "h1", "localised sub via stash");
	}
	::ok(f1() eq "f1", "localised sub restored");
	{
		local @Other::{qw/ f1 f2 /} = (sub { "j1" }, sub { "j2" });
		::ok(f1() eq "j1", "localised sub via stash slice");
		::ok(f2() eq "j2", "localised sub via stash slice");
	}
	::ok(f1() eq "f1", "localised sub restored");
	::ok(f2() eq "f2", "localised sub restored");
}

# Localising unicode keys (bug #38815)
{
    my %h;
    $h{"\243"} = "pound";
    $h{"\302\240"} = "octects";
    is(scalar keys %h, 2);
    {
	my $unicode = chr 256;
	my $ambigous = "\240" . $unicode;
	chop $ambigous;
	local $h{$unicode} = 256;
	local $h{$ambigous} = 160;

	is(scalar keys %h, 4);
	is($h{"\243"}, "pound");
	is($h{$unicode}, 256);
	is($h{$ambigous}, 160);
	is($h{"\302\240"}, "octects");
    }
    is(scalar keys %h, 2);
    is($h{"\243"}, "pound");
    is($h{"\302\240"}, "octects");
}

# And with slices
{
    my %h;
    $h{"\243"} = "pound";
    $h{"\302\240"} = "octects";
    is(scalar keys %h, 2);
    {
	my $unicode = chr 256;
	my $ambigous = "\240" . $unicode;
	chop $ambigous;
	local @h{$unicode, $ambigous} = (256, 160);

	is(scalar keys %h, 4);
	is($h{"\243"}, "pound");
	is($h{$unicode}, 256);
	is($h{$ambigous}, 160);
	is($h{"\302\240"}, "octects");
    }
    is(scalar keys %h, 2);
    is($h{"\243"}, "pound");
    is($h{"\302\240"}, "octects");
}

# [perl #39012] localizing @_ element then shifting frees element too # soon

{
    my $x;
    my $y = bless [], 'X39012';
    sub X39012::DESTROY { $x++ }
    sub { local $_[0]; shift }->($y);
    ok(!$x,  '[perl #39012]');
    
}

# when localising a hash element, the key should be copied, not referenced

{
    my %h=('k1' => 111);
    my $k='k1';
    {
	local $h{$k}=222;

	is($h{'k1'},222);
	$k='k2';
    }
    ok(! exists($h{'k2'}));
    is($h{'k1'},111);
}
{
    my %h=('k1' => 111);
    our $k = 'k1';  # try dynamic too
    {
	local $h{$k}=222;
	is($h{'k1'},222);
	$k='k2';
    }
    ok(! exists($h{'k2'}));
    is($h{'k1'},111);
}

like( runperl(stderr => 1,
              prog => 'use constant foo => q(a);' .
                      'index(q(a), foo);' .
                      'local *g=${::}{foo};print q(ok);'), "ok", "[perl #52740]");

# Keep this test last, as it can SEGV
{
    local *@;
    pass("Localised *@");
    eval {1};
    pass("Can eval with *@ localised");
}
Commit	Line	Data
a687059c LW	1	#!./perl
a687059c LW	2
d441d3db RD	3	BEGIN {
d441d3db RD	4	chdir 't' if -d 't';
28e491ba	5	@INC = qw(. ../lib);
d441d3db RD	6	require './test.pl';
d441d3db RD	7	}
7332a6c4	8	plan tests => 296;
a687059c	9
13414bd5 JM	10	my $list_assignment_supported = 1;
	11
	12	#mg.c says list assignment not supported on VMS, EPOC, and SYMBIAN.
	13	$list_assignment_supported = 0 if ($^O eq 'VMS');
	14
	15
a687059c LW	16	sub foo {
	17	local($a, $b) = @_;
	18	local($c, $d);
d441d3db RD	19	$c = "c 3";
	20	$d = "d 4";
	21	{ local($a,$c) = ("a 9", "c 10"); ($x, $y) = ($a, $c); }
	22	is($a, "a 1");
	23	is($b, "b 2");
	24	$c, $d;
a687059c LW	25	}
a687059c LW	26
d441d3db RD	27	$a = "a 5";
	28	$b = "b 6";
	29	$c = "c 7";
	30	$d = "d 8";
a687059c	31
d441d3db RD	32	my @res;
	33	@res = &foo("a 1","b 2");
	34	is($res[0], "c 3");
	35	is($res[1], "d 4");
a687059c	36
d441d3db RD	37	is($a, "a 5");
	38	is($b, "b 6");
	39	is($c, "c 7");
	40	is($d, "d 8");
	41	is($x, "a 9");
	42	is($y, "c 10");
a687059c LW	43
	44	# same thing, only with arrays and associative arrays
	45
	46	sub foo2 {
	47	local($a, @b) = @_;
	48	local(@c, %d);
d441d3db RD	49	@c = "c 3";
	50	$d{''} = "d 4";
	51	{ local($a,@c) = ("a 19", "c 20"); ($x, $y) = ($a, @c); }
	52	is($a, "a 1");
	53	is("@b", "b 2");
	54	$c[0], $d{''};
a687059c LW	55	}
a687059c LW	56
d441d3db RD	57	$a = "a 5";
	58	@b = "b 6";
	59	@c = "c 7";
	60	$d{''} = "d 8";
	61
	62	@res = &foo2("a 1","b 2");
	63	is($res[0], "c 3");
	64	is($res[1], "d 4");
a687059c	65
d441d3db RD	66	is($a, "a 5");
	67	is("@b", "b 6");
	68	is($c[0], "c 7");
	69	is($d{''}, "d 8");
	70	is($x, "a 19");
	71	is($y, "c 20");
a687059c	72
706a304b SM	73
706a304b SM	74	eval 'local($$e)';
d441d3db	75	like($@, qr/Can't localize through a reference/);
706a304b	76
82d03984	77	eval '$e = []; local(@$e)';
d441d3db	78	like($@, qr/Can't localize through a reference/);
706a304b	79
82d03984	80	eval '$e = {}; local(%$e)';
d441d3db	81	like($@, qr/Can't localize through a reference/);
85aff577	82
161b7d16 SM	83	# Array and hash elements
	84
	85	@a = ('a', 'b', 'c');
	86	{
	87	local($a[1]) = 'foo';
	88	local($a[2]) = $a[2];
d441d3db RD	89	is($a[1], 'foo');
d441d3db RD	90	is($a[2], 'c');
161b7d16 SM	91	undef @a;
161b7d16 SM	92	}
d441d3db RD	93	is($a[1], 'b');
	94	is($a[2], 'c');
	95	ok(!defined $a[0]);
161b7d16 SM	96
	97	@a = ('a', 'b', 'c');
	98	{
4ad10a0b VP	99	local($a[4]) = 'x';
	100	ok(!defined $a[3]);
	101	is($a[4], 'x');
	102	}
	103	is(scalar(@a), 3);
	104	ok(!exists $a[3]);
	105	ok(!exists $a[4]);
	106
	107	@a = ('a', 'b', 'c');
	108	{
	109	local($a[5]) = 'z';
	110	$a[4] = 'y';
	111	ok(!defined $a[3]);
	112	is($a[4], 'y');
	113	is($a[5], 'z');
	114	}
	115	is(scalar(@a), 5);
	116	ok(!defined $a[3]);
	117	is($a[4], 'y');
	118	ok(!exists $a[5]);
	119
	120	@a = ('a', 'b', 'c');
	121	{
	122	local(@a[4,6]) = ('x', 'z');
	123	ok(!defined $a[3]);
	124	is($a[4], 'x');
	125	ok(!defined $a[5]);
	126	is($a[6], 'z');
	127	}
	128	is(scalar(@a), 3);
	129	ok(!exists $a[3]);
	130	ok(!exists $a[4]);
	131	ok(!exists $a[5]);
	132	ok(!exists $a[6]);
	133
	134	@a = ('a', 'b', 'c');
	135	{
	136	local(@a[4,6]) = ('x', 'z');
	137	$a[5] = 'y';
	138	ok(!defined $a[3]);
	139	is($a[4], 'x');
	140	is($a[5], 'y');
	141	is($a[6], 'z');
	142	}
	143	is(scalar(@a), 6);
	144	ok(!defined $a[3]);
	145	ok(!defined $a[4]);
	146	is($a[5], 'y');
	147	ok(!exists $a[6]);
	148
	149	@a = ('a', 'b', 'c');
	150	{
161b7d16 SM	151	local($a[1]) = "X";
	152	shift @a;
	153	}
d441d3db	154	is($a[0].$a[1], "Xb");
d60c5a05 RD	155	{
	156	my $d = "@a";
	157	local @a = @a;
	158	is("@a", $d);
	159	}
161b7d16	160
7332a6c4 VP	161	@a = ('a', 'b', 'c');
	162	$a[4] = 'd';
	163	{
	164	delete local $a[1];
	165	is(scalar(@a), 5);
	166	is($a[0], 'a');
	167	ok(!exists($a[1]));
	168	is($a[2], 'c');
	169	ok(!exists($a[3]));
	170	is($a[4], 'd');
	171
	172	ok(!exists($a[888]));
	173	delete local $a[888];
	174	is(scalar(@a), 5);
	175	ok(!exists($a[888]));
	176
	177	ok(!exists($a[999]));
	178	my ($d, $zzz) = delete local @a[4, 999];
	179	is(scalar(@a), 3);
	180	ok(!exists($a[4]));
	181	ok(!exists($a[999]));
	182	is($d, 'd');
	183	is($zzz, undef);
	184
	185	my $c = delete local $a[2];
	186	is(scalar(@a), 1);
	187	ok(!exists($a[2]));
	188	is($c, 'c');
	189
	190	$a[888] = 'yyy';
	191	$a[999] = 'zzz';
	192	}
	193	is(scalar(@a), 5);
	194	is($a[0], 'a');
	195	is($a[1], 'b');
	196	is($a[2], 'c');
	197	ok(!defined($a[3]));
	198	is($a[4], 'd');
	199	ok(!exists($a[5]));
	200	ok(!exists($a[888]));
	201	ok(!exists($a[999]));
	202
	203	%h = (a => 1, b => 2, c => 3, d => 4);
	204	{
	205	delete local $h{b};
	206	is(scalar(keys(%h)), 3);
	207	is($h{a}, 1);
	208	ok(!exists($h{b}));
	209	is($h{c}, 3);
	210	is($h{d}, 4);
	211
	212	ok(!exists($h{yyy}));
	213	delete local $h{yyy};
	214	is(scalar(keys(%h)), 3);
	215	ok(!exists($h{yyy}));
	216
	217	ok(!exists($h{zzz}));
	218	my ($d, $zzz) = delete local @h{qw/d zzz/};
	219	is(scalar(keys(%h)), 2);
	220	ok(!exists($h{d}));
	221	ok(!exists($h{zzz}));
	222	is($d, 4);
	223	is($zzz, undef);
	224
225	my $c = delete local $h{c};
226	is(scalar(keys(%h)), 1);
227	ok(!exists($h{c}));
228	is($c, 3);
229
230	$h{yyy} = 888;
231	$h{zzz} = 999;
232	}
233	is(scalar(keys(%h)), 4);
234	is($h{a}, 1);
235	is($h{b}, 2);
236	is($h{c}, 3);
237	ok($h{d}, 4);
238	ok(!exists($h{yyy}));
239	ok(!exists($h{zzz}));
240
241	%h = ('a' => { 'b' => 1 }, 'c' => 2);
242	{
243	my $a = delete local $h{a};
244	is(scalar(keys(%h)), 1);
245	ok(!exists($h{a}));
246	is($h{c}, 2);
247	is(scalar(keys(%$a)), 1);
248
249	my $b = delete local $a->{b};
250	is(scalar(keys(%$a)), 0);
251	is($b, 1);
252
253	$a->{d} = 3;
254	}
255	is(scalar(keys(%h)), 2);
256	{
257	my $a = $h{a};
258	is(scalar(keys(%$a)), 2);
259	is($a->{b}, 1);
260	is($a->{d}, 3);
261	}
262	is($h{c}, 2);
263
161b7d16 SM	264	%h = ('a' => 1, 'b' => 2, 'c' => 3);
	265	{
	266	local($h{'a'}) = 'foo';
	267	local($h{'b'}) = $h{'b'};
d441d3db RD	268	is($h{'a'}, 'foo');
d441d3db RD	269	is($h{'b'}, 2);
161b7d16 SM	270	local($h{'c'});
	271	delete $h{'c'};
	272	}
d441d3db RD	273	is($h{'a'}, 1);
d441d3db RD	274	is($h{'b'}, 2);
d60c5a05 RD	275	{
	276	my $d = join("\n", map { "$_=>$h{$_}" } sort keys %h);
	277	local %h = %h;
	278	is(join("\n", map { "$_=>$h{$_}" } sort keys %h), $d);
	279	}
d441d3db	280	is($h{'c'}, 3);
2bb40b7f GS	281
	282	# check for scope leakage
	283	$a = 'outer';
	284	if (1) { local $a = 'inner' }
d441d3db	285	is($a, 'outer');
2bb40b7f GS	286
	287	# see if localization works when scope unwinds
	288	local $m = 5;
	289	eval {
	290	for $m (6) {
	291	local $m = 7;
	292	die "bye";
	293	}
	294	};
d441d3db	295	is($m, 5);
4e4c362e GS	296
	297	# see if localization works on tied arrays
	298	{
	299	package TA;
	300	sub TIEARRAY { bless [], $_[0] }
	301	sub STORE { print "# STORE [@_]\n"; $_[0]->[$_[1]] = $_[2] }
	302	sub FETCH { my $v = $_[0]->[$_[1]]; print "# FETCH [@_=$v]\n"; $v }
4ad10a0b VP	303	sub EXISTS { print "# EXISTS [@_]\n"; exists $_[0]->[$_[1]]; }
4ad10a0b VP	304	sub DELETE { print "# DELETE [@_]\n"; delete $_[0]->[$_[1]]; }
4e4c362e GS	305	sub CLEAR { print "# CLEAR [@_]\n"; @{$_[0]} = (); }
	306	sub FETCHSIZE { scalar(@{$_[0]}) }
	307	sub SHIFT { shift (@{$_[0]}) }
	308	sub EXTEND {}
	309	}
	310
	311	tie @a, 'TA';
	312	@a = ('a', 'b', 'c');
	313	{
	314	local($a[1]) = 'foo';
be6c24e0	315	local($a[2]) = $a[2];
d441d3db RD	316	is($a[1], 'foo');
d441d3db RD	317	is($a[2], 'c');
4e4c362e GS	318	@a = ();
4e4c362e GS	319	}
d441d3db RD	320	is($a[1], 'b');
	321	is($a[2], 'c');
	322	ok(!defined $a[0]);
d60c5a05 RD	323	{
	324	my $d = "@a";
	325	local @a = @a;
	326	is("@a", $d);
	327	}
4e4c362e	328
4ad10a0b VP	329	# local() should preserve the existenceness of tied array elements
	330	@a = ('a', 'b', 'c');
	331	{
	332	local($a[4]) = 'x';
	333	ok(!defined $a[3]);
	334	is($a[4], 'x');
	335	}
	336	is(scalar(@a), 3);
	337	ok(!exists $a[3]);
	338	ok(!exists $a[4]);
	339
	340	@a = ('a', 'b', 'c');
	341	{
	342	local($a[5]) = 'z';
	343	$a[4] = 'y';
	344	ok(!defined $a[3]);
	345	is($a[4], 'y');
	346	is($a[5], 'z');
	347	}
	348	is(scalar(@a), 5);
	349	ok(!defined $a[3]);
	350	is($a[4], 'y');
	351	ok(!exists $a[5]);
	352
	353	@a = ('a', 'b', 'c');
	354	{
	355	local(@a[4,6]) = ('x', 'z');
	356	ok(!defined $a[3]);
	357	is($a[4], 'x');
	358	ok(!defined $a[5]);
	359	is($a[6], 'z');
	360	}
	361	is(scalar(@a), 3);
	362	ok(!exists $a[3]);
	363	ok(!exists $a[4]);
	364	ok(!exists $a[5]);
	365	ok(!exists $a[6]);
	366
	367	@a = ('a', 'b', 'c');
	368	{
	369	local(@a[4,6]) = ('x', 'z');
	370	$a[5] = 'y';
	371	ok(!defined $a[3]);
	372	is($a[4], 'x');
	373	is($a[5], 'y');
	374	is($a[6], 'z');
	375	}
	376	is(scalar(@a), 6);
	377	ok(!defined $a[3]);
	378	ok(!defined $a[4]);
	379	is($a[5], 'y');
	380	ok(!exists $a[6]);
	381
7332a6c4 VP	382	@a = ('a', 'b', 'c');
	383	$a[4] = 'd';
	384	{
	385	delete local $a[1];
	386	is(scalar(@a), 5);
	387	is($a[0], 'a');
	388	ok(!exists($a[1]));
	389	is($a[2], 'c');
	390	ok(!exists($a[3]));
	391	is($a[4], 'd');
	392
	393	ok(!exists($a[888]));
	394	delete local $a[888];
	395	is(scalar(@a), 5);
	396	ok(!exists($a[888]));
	397
	398	ok(!exists($a[999]));
	399	my ($d, $zzz) = delete local @a[4, 999];
	400	is(scalar(@a), 3);
	401	ok(!exists($a[4]));
	402	ok(!exists($a[999]));
	403	is($d, 'd');
	404	is($zzz, undef);
	405
	406	my $c = delete local $a[2];
	407	is(scalar(@a), 1);
	408	ok(!exists($a[2]));
	409	is($c, 'c');
	410
	411	$a[888] = 'yyy';
	412	$a[999] = 'zzz';
	413	}
	414	is(scalar(@a), 5);
	415	is($a[0], 'a');
	416	is($a[1], 'b');
	417	is($a[2], 'c');
	418	ok(!defined($a[3]));
	419	is($a[4], 'd');
	420	ok(!exists($a[5]));
	421	ok(!exists($a[888]));
	422	ok(!exists($a[999]));
	423
4ad10a0b	424	# see if localization works on tied hashes
4e4c362e GS	425	{
	426	package TH;
	427	sub TIEHASH { bless {}, $_[0] }
	428	sub STORE { print "# STORE [@_]\n"; $_[0]->{$_[1]} = $_[2] }
	429	sub FETCH { my $v = $_[0]->{$_[1]}; print "# FETCH [@_=$v]\n"; $v }
c39e6ab0	430	sub EXISTS { print "# EXISTS [@_]\n"; exists $_[0]->{$_[1]}; }
4e4c362e GS	431	sub DELETE { print "# DELETE [@_]\n"; delete $_[0]->{$_[1]}; }
4e4c362e GS	432	sub CLEAR { print "# CLEAR [@_]\n"; %{$_[0]} = (); }
d60c5a05 RD	433	sub FIRSTKEY { print "# FIRSTKEY [@_]\n"; keys %{$_[0]}; each %{$_[0]} }
d60c5a05 RD	434	sub NEXTKEY { print "# NEXTKEY [@_]\n"; each %{$_[0]} }
4e4c362e GS	435	}
4e4c362e GS	436
4e4c362e GS	437	tie %h, 'TH';
	438	%h = ('a' => 1, 'b' => 2, 'c' => 3);
	439
	440	{
	441	local($h{'a'}) = 'foo';
be6c24e0	442	local($h{'b'}) = $h{'b'};
159ad915 DM	443	local($h{'y'});
159ad915 DM	444	local($h{'z'}) = 33;
d441d3db RD	445	is($h{'a'}, 'foo');
d441d3db RD	446	is($h{'b'}, 2);
4e4c362e GS	447	local($h{'c'});
	448	delete $h{'c'};
	449	}
d441d3db RD	450	is($h{'a'}, 1);
	451	is($h{'b'}, 2);
	452	is($h{'c'}, 3);
	453	# local() should preserve the existenceness of tied hash elements
	454	ok(! exists $h{'y'});
	455	ok(! exists $h{'z'});
d60c5a05 RD	456	TODO: {
	457	todo_skip("Localize entire tied hash");
	458	my $d = join("\n", map { "$_=>$h{$_}" } sort keys %h);
	459	local %h = %h;
	460	is(join("\n", map { "$_=>$h{$_}" } sort keys %h), $d);
	461	}
4e4c362e	462
7332a6c4 VP	463	%h = (a => 1, b => 2, c => 3, d => 4);
	464	{
	465	delete local $h{b};
	466	is(scalar(keys(%h)), 3);
	467	is($h{a}, 1);
	468	ok(!exists($h{b}));
	469	is($h{c}, 3);
	470	is($h{d}, 4);
	471
	472	ok(!exists($h{yyy}));
	473	delete local $h{yyy};
	474	is(scalar(keys(%h)), 3);
	475	ok(!exists($h{yyy}));
	476
	477	ok(!exists($h{zzz}));
	478	my ($d, $zzz) = delete local @h{qw/d zzz/};
	479	is(scalar(keys(%h)), 2);
	480	ok(!exists($h{d}));
	481	ok(!exists($h{zzz}));
	482	is($d, 4);
	483	is($zzz, undef);
	484
	485	my $c = delete local $h{c};
	486	is(scalar(keys(%h)), 1);
	487	ok(!exists($h{c}));
	488	is($c, 3);
	489
	490	$h{yyy} = 888;
	491	$h{zzz} = 999;
	492	}
	493	is(scalar(keys(%h)), 4);
	494	is($h{a}, 1);
	495	is($h{b}, 2);
	496	is($h{c}, 3);
	497	ok($h{d}, 4);
	498	ok(!exists($h{yyy}));
	499	ok(!exists($h{zzz}));
	500
4e4c362e GS	501	@a = ('a', 'b', 'c');
	502	{
	503	local($a[1]) = "X";
	504	shift @a;
	505	}
d441d3db	506	is($a[0].$a[1], "Xb");
4e4c362e	507
be6c24e0 GS	508	# now try the same for %SIG
	509
	510	$SIG{TERM} = 'foo';
	511	$SIG{INT} = \&foo;
	512	$SIG{__WARN__} = $SIG{INT};
	513	{
	514	local($SIG{TERM}) = $SIG{TERM};
	515	local($SIG{INT}) = $SIG{INT};
	516	local($SIG{__WARN__}) = $SIG{__WARN__};
d441d3db RD	517	is($SIG{TERM}, 'main::foo');
	518	is($SIG{INT}, \&foo);
	519	is($SIG{__WARN__}, \&foo);
be6c24e0 GS	520	local($SIG{INT});
	521	delete $SIG{__WARN__};
	522	}
d441d3db RD	523	is($SIG{TERM}, 'main::foo');
	524	is($SIG{INT}, \&foo);
	525	is($SIG{__WARN__}, \&foo);
d60c5a05 RD	526	{
	527	my $d = join("\n", map { "$_=>$SIG{$_}" } sort keys %SIG);
	528	local %SIG = %SIG;
	529	is(join("\n", map { "$_=>$SIG{$_}" } sort keys %SIG), $d);
	530	}
be6c24e0 GS	531
	532	# and for %ENV
	533
	534	$ENV{_X_} = 'a';
	535	$ENV{_Y_} = 'b';
	536	$ENV{_Z_} = 'c';
	537	{
159ad915 DM	538	local($ENV{_A_});
159ad915 DM	539	local($ENV{_B_}) = 'foo';
be6c24e0 GS	540	local($ENV{_X_}) = 'foo';
be6c24e0 GS	541	local($ENV{_Y_}) = $ENV{_Y_};
d441d3db RD	542	is($ENV{_X_}, 'foo');
d441d3db RD	543	is($ENV{_Y_}, 'b');
be6c24e0 GS	544	local($ENV{_Z_});
	545	delete $ENV{_Z_};
	546	}
d441d3db RD	547	is($ENV{_X_}, 'a');
	548	is($ENV{_Y_}, 'b');
	549	is($ENV{_Z_}, 'c');
	550	# local() should preserve the existenceness of %ENV elements
	551	ok(! exists $ENV{_A_});
	552	ok(! exists $ENV{_B_});
13414bd5 JM	553
	554	SKIP: {
	555	skip("Can't make list assignment to \%ENV on this system")
	556	unless $list_assignment_supported;
d60c5a05 RD	557	my $d = join("\n", map { "$_=>$ENV{$_}" } sort keys %ENV);
	558	local %ENV = %ENV;
	559	is(join("\n", map { "$_=>$ENV{$_}" } sort keys %ENV), $d);
	560	}
be6c24e0	561
0214ae40 GS	562	# does implicit localization in foreach skip magic?
0214ae40 GS	563
d441d3db	564	$_ = "o 0,o 1,";
0214ae40 GS	565	my $iter = 0;
0214ae40 GS	566	while (/(o.+?),/gc) {
d441d3db	567	is($1, "o $iter");
0214ae40	568	foreach (1..1) { $iter++ }
d441d3db	569	if ($iter > 2) { fail("endless loop"); last; }
0214ae40 GS	570	}
	571
	572	{
	573	package UnderScore;
	574	sub TIESCALAR { bless \my $self, shift }
	575	sub FETCH { die "read \$_ forbidden" }
	576	sub STORE { die "write \$_ forbidden" }
	577	tie $_, __PACKAGE__;
0214ae40 GS	578	my @tests = (
	579	"Nesting" => sub { print '#'; for (1..3) { print }
	580	print "\n" }, 1,
	581	"Reading" => sub { print }, 0,
	582	"Matching" => sub { $x = /badness/ }, 0,
	583	"Concat" => sub { $_ .= "a" }, 0,
	584	"Chop" => sub { chop }, 0,
	585	"Filetest" => sub { -x }, 0,
	586	"Assignment" => sub { $_ = "Bad" }, 0,
	587	# XXX whether next one should fail is debatable
	588	"Local \$_" => sub { local $_ = 'ok?'; print }, 0,
	589	"for local" => sub { for("#ok?\n"){ print } }, 1,
	590	);
	591	while ( ($name, $code, $ok) = splice(@tests, 0, 3) ) {
0214ae40	592	eval { &$code };
d441d3db	593	main::ok(($ok xor $@), "Underscore '$name'");
0214ae40 GS	594	}
	595	untie $_;
	596	}
	597
1f5346dc SC	598	{
	599	# BUG 20001205.22
	600	my %x;
	601	$x{a} = 1;
	602	{ local $x{b} = 1; }
d441d3db	603	ok(! exists $x{b});
1f5346dc	604	{ local @x{c,d,e}; }
d441d3db	605	ok(! exists $x{c});
1f5346dc	606	}
159ad915	607
33f3c7b8 RGS	608	# local() and readonly magic variables
	609
	610	eval { local $1 = 1 };
d441d3db	611	like($@, qr/Modification of a read-only value attempted/);
33f3c7b8 RGS	612
33f3c7b8 RGS	613	eval { for ($1) { local $_ = 1 } };
d441d3db	614	like($@, qr/Modification of a read-only value attempted/);
33f3c7b8	615
0cbee0a4	616	# make sure $1 is still read-only
33f3c7b8	617	eval { for ($1) { local $_ = 1 } };
d441d3db	618	like($@, qr/Modification of a read-only value attempted/);
ac117f44 RGS	619
	620	# The s/// adds 'g' magic to $_, but it should remain non-readonly
	621	eval { for("a") { for $x (1,2) { local $_="b"; s/(.*)/+$1/ } } };
d441d3db	622	is($@, "");
4cb09e0a	623
503de470	624	# RT #4342 Special local() behavior for $[
4cb09e0a	625	{
4521bb06	626	no warnings 'deprecated';
4cb09e0a	627	local $[ = 1;
503de470	628	ok(1 == $[, 'lexcical scope of local $[');
4cb09e0a SP	629	f();
	630	}
	631
	632	sub f { ok(0 == $[); }
	633
985d6f61 HS	634	# sub localisation
	635	{
	636	package Other;
	637
	638	sub f1 { "f1" }
	639	sub f2 { "f2" }
	640
	641	no warnings "redefine";
	642	{
	643	local *f1 = sub { "g1" };
	644	::ok(f1() eq "g1", "localised sub via glob");
	645	}
	646	::ok(f1() eq "f1", "localised sub restored");
	647	{
	648	local $Other::{"f1"} = sub { "h1" };
	649	::ok(f1() eq "h1", "localised sub via stash");
	650	}
	651	::ok(f1() eq "f1", "localised sub restored");
	652	{
	653	local @Other::{qw/ f1 f2 /} = (sub { "j1" }, sub { "j2" });
985d6f61 HS	654	::ok(f1() eq "j1", "localised sub via stash slice");
985d6f61 HS	655	::ok(f2() eq "j2", "localised sub via stash slice");
985d6f61 HS	656	}
	657	::ok(f1() eq "f1", "localised sub restored");
	658	::ok(f2() eq "f2", "localised sub restored");
	659	}
7d654f43 NC	660
	661	# Localising unicode keys (bug #38815)
	662	{
	663	my %h;
	664	$h{"\243"} = "pound";
	665	$h{"\302\240"} = "octects";
	666	is(scalar keys %h, 2);
	667	{
	668	my $unicode = chr 256;
	669	my $ambigous = "\240" . $unicode;
	670	chop $ambigous;
	671	local $h{$unicode} = 256;
	672	local $h{$ambigous} = 160;
	673
	674	is(scalar keys %h, 4);
	675	is($h{"\243"}, "pound");
	676	is($h{$unicode}, 256);
	677	is($h{$ambigous}, 160);
	678	is($h{"\302\240"}, "octects");
	679	}
	680	is(scalar keys %h, 2);
	681	is($h{"\243"}, "pound");
	682	is($h{"\302\240"}, "octects");
	683	}
919acde0 NC	684
	685	# And with slices
	686	{
	687	my %h;
	688	$h{"\243"} = "pound";
	689	$h{"\302\240"} = "octects";
	690	is(scalar keys %h, 2);
	691	{
	692	my $unicode = chr 256;
	693	my $ambigous = "\240" . $unicode;
	694	chop $ambigous;
	695	local @h{$unicode, $ambigous} = (256, 160);
	696
	697	is(scalar keys %h, 4);
	698	is($h{"\243"}, "pound");
	699	is($h{$unicode}, 256);
	700	is($h{$ambigous}, 160);
	701	is($h{"\302\240"}, "octects");
	702	}
	703	is(scalar keys %h, 2);
	704	is($h{"\243"}, "pound");
	705	is($h{"\302\240"}, "octects");
	706	}
658aef79 DM	707
	708	# [perl #39012] localizing @_ element then shifting frees element too # soon
	709
	710	{
	711	my $x;
	712	my $y = bless [], 'X39012';
	713	sub X39012::DESTROY { $x++ }
	714	sub { local $_[0]; shift }->($y);
	715	ok(!$x, '[perl #39012]');
	716
	717	}
	718
b2096149 BL	719	# when localising a hash element, the key should be copied, not referenced
	720
	721	{
	722	my %h=('k1' => 111);
	723	my $k='k1';
	724	{
	725	local $h{$k}=222;
	726
	727	is($h{'k1'},222);
	728	$k='k2';
	729	}
	730	ok(! exists($h{'k2'}));
	731	is($h{'k1'},111);
	732	}
46c458a0 HS	733	{
	734	my %h=('k1' => 111);
	735	our $k = 'k1'; # try dynamic too
	736	{
	737	local $h{$k}=222;
	738	is($h{'k1'},222);
	739	$k='k2';
	740	}
	741	ok(! exists($h{'k2'}));
	742	is($h{'k1'},111);
	743	}
72651472	744
07a28ea7 B	745	like( runperl(stderr => 1,
	746	prog => 'use constant foo => q(a);' .
	747	'index(q(a), foo);' .
45f2a18c	748	'local *g=${::}{foo};print q(ok);'), "ok", "[perl #52740]");
07a28ea7	749
72651472 NC	750	# Keep this test last, as it can SEGV
	751	{
	752	local *@;
	753	pass("Localised *@");
	754	eval {1};
	755	pass("Can eval with *@ localised");
	756	}
	757