1N/A#!perl
1N/A
1N/ABEGIN {
1N/A require Config;
1N/A import Config;
1N/A if ($Config{'extensions'} !~ /\bOpcode\b/) {
1N/A print "1..0\n";
1N/A exit 0;
1N/A }
1N/A}
1N/A
1N/Ause strict;
1N/Ause warnings;
1N/Ause Test::More;
1N/Ause Safe;
1N/Aplan(tests => 6);
1N/A
1N/Amy $c = new Safe;
1N/A$c->permit(qw(require caller));
1N/A
1N/Amy $no_warn_redef = ($] != 5.008009)
1N/A ? q(no warnings 'redefine';)
1N/A : q($SIG{__WARN__}=sub{};);
1N/Amy $r = $c->reval($no_warn_redef . q!
1N/A sub UNIVERSAL::isa { "pwned" }
1N/A (bless[],"Foo")->isa("Foo");
1N/A!);
1N/A
1N/Ais( $r, "pwned", "isa overriden in compartment" );
1N/Ais( (bless[],"Foo")->isa("Foo"), 1, "... but not outside" );
1N/A
1N/Asub Foo::foo {}
1N/A
1N/A$r = $c->reval($no_warn_redef . q!
1N/A sub UNIVERSAL::can { "pwned" }
1N/A (bless[],"Foo")->can("foo");
1N/A!);
1N/A
1N/Ais( $r, "pwned", "can overriden in compartment" );
1N/Ais( (bless[],"Foo")->can("foo"), \&Foo::foo, "... but not outside" );
1N/A
1N/A$r = $c->reval(q!
1N/A utf8::is_utf8("\x{100}");
1N/A!);
1N/Ais( $@, '', 'can call utf8::is_valid' );
1N/Ais( $r, 1, '... returns 1' );