#!./perl -w BEGIN { chdir 't' if -d 't'; @INC = '../lib'; require './test.pl'; skip_all_without_config('d_setpgrp'); } plan tests => 3; ok(!eval { package A;sub foo { die("got here") }; package main; A->foo(setpgrp())}); ok($@ =~ /got here/, "setpgrp() should extend the stack before modifying it"); is join("_", setpgrp(0)), 1, 'setpgrp with one argument';