use strict;
use warnings;
use subs qw( open );
use Errno qw( EPIPE );

sub open {
   $! = EPIPE;
   return 0;
}

open(my $fh, '<', \my $buf) or die("open: $!\n");

##</code><code>##

open: Broken pipe

##</code><code>##

package ModuleToTest;

sub f {
   open(my $fh, '<', \my $buf) or die("open: $!\n");
}

1;

##</code><code>##

use Test::More tests => 1;

{
   package ModuleToTest;
   use subs qw( open );
   use Errno qw( EPIPE );
   sub open {
      $! = EPIPE;
      return 0;
   }
}

use Module;

ok( !eval { Module->f(); 1 } );

##</code><code>##

1..1
ok 1