$in->flush or die "flush failed: $!";
$in->seek(0, SEEK_SET);
my $out = tempfile();
- my $pid = spawn(\@cmd, {}, { 0 => fileno($in), 1 => fileno($out)});
+ my $pid = spawn(\@cmd, {}, { 0 => $in, 1 => $out });
is(waitpid($pid, 0), $pid, 'waitpid succeeds on hash-object');
is($?, 0, 'hash-object');
$out->seek(0, SEEK_SET);