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　晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 . Prv8 Shell

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Current File : //usr/share/doc/perl-Test-Simple/t/Legacy/overload_threads.t

#!perl -w
use Test2::Util qw/CAN_THREAD/;

BEGIN {
    if( $ENV{PERL_CORE} ) {
        chdir 't';
        @INC = ('../lib', 'lib');
    }
    else {
        unshift @INC, 't/lib';
    }
}
chdir 't';

BEGIN {
    # There was a bug with overloaded objects and threads.
    # See rt.cpan.org 4218
    eval { require threads; 'threads'->import; 1; } if CAN_THREAD;
}

use Test::More;

plan skip_all => "known to crash on $]" if $] le "5.006002";

plan tests => 5;


package Overloaded;

use overload
  q{""} => sub { $_[0]->{string} };

sub new {
    my $class = shift;
    bless { string => shift }, $class;
}


package main;

my $warnings = '';
local $SIG{__WARN__} = sub { $warnings = join '', @_ };

# overloaded object as name
my $obj = Overloaded->new('foo');
ok( 1, $obj );

# overloaded object which returns undef as name
my $undef = Overloaded->new(undef);
pass( $undef );

is( $warnings, '' );


TODO: {
    my $obj = Overloaded->new('not really todo, testing overloaded reason');
    local $TODO = $obj;
    fail("Just checking todo as an overloaded value");
}


SKIP: {
    my $obj = Overloaded->new('not really skipped, testing overloaded reason');
    skip $obj, 1;
}

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