+#!perl -w
+# Copyright (C) 2020-2021 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
use strict;
+use v5.10.1;
use Test::More;
-use IO::Handle;
use PublicInbox::Syscall qw(:epoll);
plan skip_all => 'not Linux' if $^O ne 'linux';
my $epfd = epoll_create();
ok($epfd >= 0, 'epoll_create');
-my $hnd = IO::Handle->new_from_fd($epfd, 'r+'); # close on exit
+open(my $hnd, '+<&=', $epfd); # for autoclose
pipe(my ($r, $w)) or die "pipe: $!";
is(epoll_ctl($epfd, EPOLL_CTL_ADD, fileno($w), EPOLLOUT), 0,