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#!./perl
# $RCSfile: local.t,v $$Revision: 4.1 $$Date: 92/08/07 18:28:04 $
print "1..58\n";
# XXX known to leak scalars
$ENV{PERL_DESTRUCT_LEVEL} = 0 unless $ENV{PERL_DESTRUCT_LEVEL} > 3;
sub foo {
local($a, $b) = @_;
local($c, $d);
$c = "ok 3\n";
$d = "ok 4\n";
{ local($a,$c) = ("ok 9\n", "ok 10\n"); ($x, $y) = ($a, $c); }
print $a, $b;
$c . $d;
}
$a = "ok 5\n";
$b = "ok 6\n";
$c = "ok 7\n";
$d = "ok 8\n";
print &foo("ok 1\n","ok 2\n");
print $a,$b,$c,$d,$x,$y;
# same thing, only with arrays and associative arrays
sub foo2 {
local($a, @b) = @_;
local(@c, %d);
@c = "ok 13\n";
$d{''} = "ok 14\n";
{ local($a,@c) = ("ok 19\n", "ok 20\n"); ($x, $y) = ($a, @c); }
print $a, @b;
$c[0] . $d{''};
}
$a = "ok 15\n";
@b = "ok 16\n";
@c = "ok 17\n";
$d{''} = "ok 18\n";
print &foo2("ok 11\n","ok 12\n");
print $a,@b,@c,%d,$x,$y;
eval 'local($$e)';
print +($@ =~ /Can't localize through a reference/) ? "" : "not ", "ok 21\n";
eval 'local(@$e)';
print +($@ =~ /Can't localize through a reference/) ? "" : "not ", "ok 22\n";
eval 'local(%$e)';
print +($@ =~ /Can't localize through a reference/) ? "" : "not ", "ok 23\n";
# Array and hash elements
@a = ('a', 'b', 'c');
{
local($a[1]) = 'foo';
local($a[2]) = $a[2];
print +($a[1] eq 'foo') ? "" : "not ", "ok 24\n";
print +($a[2] eq 'c') ? "" : "not ", "ok 25\n";
undef @a;
}
print +($a[1] eq 'b') ? "" : "not ", "ok 26\n";
print +($a[2] eq 'c') ? "" : "not ", "ok 27\n";
print +(!defined $a[0]) ? "" : "not ", "ok 28\n";
@a = ('a', 'b', 'c');
{
local($a[1]) = "X";
shift @a;
}
print +($a[0].$a[1] eq "Xb") ? "" : "not ", "ok 29\n";
%h = ('a' => 1, 'b' => 2, 'c' => 3);
{
local($h{'a'}) = 'foo';
local($h{'b'}) = $h{'b'};
print +($h{'a'} eq 'foo') ? "" : "not ", "ok 30\n";
print +($h{'b'} == 2) ? "" : "not ", "ok 31\n";
local($h{'c'});
delete $h{'c'};
}
print +($h{'a'} == 1) ? "" : "not ", "ok 32\n";
print +($h{'b'} == 2) ? "" : "not ", "ok 33\n";
print +($h{'c'} == 3) ? "" : "not ", "ok 34\n";
# check for scope leakage
$a = 'outer';
if (1) { local $a = 'inner' }
print +($a eq 'outer') ? "" : "not ", "ok 35\n";
# see if localization works when scope unwinds
local $m = 5;
eval {
for $m (6) {
local $m = 7;
die "bye";
}
};
print $m == 5 ? "" : "not ", "ok 36\n";
# 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"; $v }
sub CLEAR { print "# CLEAR [@_]\n"; @{$_[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]) = $a[2];
print +($a[1] eq 'foo') ? "" : "not ", "ok 37\n";
print +($a[2] eq 'c') ? "" : "not ", "ok 38\n";
@a = ();
}
print +($a[1] eq 'b') ? "" : "not ", "ok 39\n";
print +($a[2] eq 'c') ? "" : "not ", "ok 40\n";
print +(!defined $a[0]) ? "" : "not ", "ok 41\n";
{
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 DELETE { print "# DELETE [@_]\n"; delete $_[0]->{$_[1]}; }
sub CLEAR { print "# CLEAR [@_]\n"; %{$_[0]} = (); }
}
# see if localization works on tied hashes
tie %h, 'TH';
%h = ('a' => 1, 'b' => 2, 'c' => 3);
{
local($h{'a'}) = 'foo';
local($h{'b'}) = $h{'b'};
print +($h{'a'} eq 'foo') ? "" : "not ", "ok 42\n";
print +($h{'b'} == 2) ? "" : "not ", "ok 43\n";
local($h{'c'});
delete $h{'c'};
}
print +($h{'a'} == 1) ? "" : "not ", "ok 44\n";
print +($h{'b'} == 2) ? "" : "not ", "ok 45\n";
print +($h{'c'} == 3) ? "" : "not ", "ok 46\n";
@a = ('a', 'b', 'c');
{
local($a[1]) = "X";
shift @a;
}
print +($a[0].$a[1] eq "Xb") ? "" : "not ", "ok 47\n";
# 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__}) = $SIG{__WARN__};
print +($SIG{TERM} eq 'main::foo') ? "" : "not ", "ok 48\n";
print +($SIG{INT} eq \&foo) ? "" : "not ", "ok 49\n";
print +($SIG{__WARN__} eq \&foo) ? "" : "not ", "ok 50\n";
local($SIG{INT});
delete $SIG{__WARN__};
}
print +($SIG{TERM} eq 'main::foo') ? "" : "not ", "ok 51\n";
print +($SIG{INT} eq \&foo) ? "" : "not ", "ok 52\n";
print +($SIG{__WARN__} eq \&foo) ? "" : "not ", "ok 53\n";
# and for %ENV
$ENV{_X_} = 'a';
$ENV{_Y_} = 'b';
$ENV{_Z_} = 'c';
{
local($ENV{_X_}) = 'foo';
local($ENV{_Y_}) = $ENV{_Y_};
print +($ENV{_X_} eq 'foo') ? "" : "not ", "ok 54\n";
print +($ENV{_Y_} eq 'b') ? "" : "not ", "ok 55\n";
local($ENV{_Z_});
delete $ENV{_Z_};
}
print +($ENV{_X_} eq 'a') ? "" : "not ", "ok 56\n";
print +($ENV{_Y_} eq 'b') ? "" : "not ", "ok 57\n";
print +($ENV{_Z_} eq 'c') ? "" : "not ", "ok 58\n";
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