BEGIN {
chdir 't' if -d 't';
+ @INC = qw(. ../lib);
require './test.pl';
}
-plan tests => 85;
+plan tests => 310;
+
+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, $b) = @_;
@a = ('a', 'b', 'c');
{
+ local($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", $d);
}
+@a = ('a', 'b', 'c');
+$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';
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]}) }
local @a = @a;
is("@a", $d);
}
+# RT #7938: localising an array should make it temporarily untied
+{
+ @a = qw(a b c);
+ local @a = (6,7,8);
+ is("@a", "6 7 8", 'local @a assigned 6,7,8');
+ {
+ my $c = 0;
+ local *TA::STORE = sub { $c++ };
+ $a[0] = 9;
+ is($c, 0, 'STORE not called after array localised');
+ }
+ is("@a", "9 7 8", 'local @a should now be 9 7 8');
+}
+is("@a", "a b c", '@a should now contain original value');
+
+
+# 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 {}, $_[0] }
sub NEXTKEY { print "# NEXTKEY [@_]\n"; each %{$_[0]} }
}
-# see if localization works on tied hashes
tie %h, 'TH';
%h = ('a' => 1, 'b' => 2, 'c' => 3);
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 $h{'z'});
is(join("\n", map { "$_=>$h{$_}" } sort keys %h), $d);
}
+# RT #7939: localising a hash should make it temporarily untied
+{
+ %h = qw(a 1 b 2 c 3);
+ local %h = qw(x 6 y 7 z 8);
+ is(join('', sort keys %h), "xyz", 'local %h has new keys');
+ is(join('', sort values %h), "678", 'local %h has new values');
+ {
+ my $c = 0;
+ local *TH::STORE = sub { $c++ };
+ $h{x} = 9;
+ is($c, 0, 'STORE not called after hash localised');
+ }
+ is($h{x}, 9, '$h{x} should now be 9');
+}
+is(join('', sort keys %h), "abc", 'restored %h has original keys');
+is(join('', sort values %h), "123", 'restored %h has original values');
+
+
+%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";
# 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);
"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 { local $1 = 1 };
like($@, qr/Modification of a read-only value attempted/);
+# local($_) always strips all magic
eval { for ($1) { local $_ = 1 } };
-like($@, qr/Modification of a read-only value attempted/);
+is($@, "");
-# make sure $1 is still read-only
-eval { for ($1) { local $_ = 1 } };
-like($@, qr/Modification of a read-only value attempted/);
+{
+ my $STORE = my $FETCH = 0;
+ package TieHash;
+ sub TIEHASH { bless $_[1], $_[0] }
+ sub FETCH { ++$FETCH; 42 }
+ sub STORE { ++$STORE }
+
+ package main;
+ tie my %hash, "TieHash", {};
+
+ eval { for ($hash{key}) {local $_ = 2} };
+ is($STORE, 0);
+ is($FETCH, 0);
+}
# The s/// adds 'g' magic to $_, but it should remain non-readonly
eval { for("a") { for $x (1,2) { local $_="b"; s/(.*)/+$1/ } } };
is($@, "");
+
+# 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]");
+
+# related to perl #112966
+# Magic should not cause elements not to be deleted after scope unwinding
+# when they did not exist before local()
+() = \$#squinch; # $#foo in lvalue context makes array magical
+{
+ local $squinch[0];
+ local @squinch[1..2];
+ package Flibbert;
+ m??; # makes stash magical
+ local $Flibbert::{foo};
+ local @Flibbert::{<bar baz>};
+}
+ok !exists $Flibbert::{foo},
+ 'local helem on magic hash does not leave elems on scope exit';
+ok !exists $Flibbert::{bar},
+ 'local hslice on magic hash does not leave elems on scope exit';
+ok !exists $squinch[0],
+ 'local aelem on magic hash does not leave elems on scope exit';
+ok !exists $squinch[1],
+ 'local aslice on magic hash does not leave elems on scope exit';
+
+# Keep these tests last, as they can SEGV
+{
+ local *@;
+ pass("Localised *@");
+ eval {1};
+ pass("Can eval with *@ localised");
+
+ local @{"nugguton"};
+ local %{"netgonch"};
+ delete $::{$_} for 'nugguton','netgonch';
+}
+pass ('localised arrays and hashes do not crash if glob is deleted');
+
+# [perl #112966] Rmagic can cause delete local to crash
+package Grompits {
+local $SIG{__WARN__};
+ delete local $ISA[0];
+ delete local @ISA[1..10];
+ m??; # makes stash magical
+ delete local $Grompits::{foo};
+ delete local @Grompits::{<foo bar>};
+}
+pass 'rmagic does not cause delete local to crash on nonexistent elems';
https://perl5.git.perl.org / perl5.git / blobdiff