use strict;
use warnings;

my $file = 'reqtest.pl';
my $interrupted = 0;

open my $fh, ">$file" or die "Can't create file '$file': $!: $^E\n";
print $fh <<'EOT';
BEGIN {
    print STDERR "Hit CTRL+C now!\n";
    sleep 3;
}
1;
EOT
close $fh;

$SIG{INT} = sub {
    print "Caught SIGINT. Terminating.\n";
    $interrupted = 1;
};

sub handle_sigint {
    if (-f $file) {
        unlink $file or warn "Can't delete file '$file': $!: $^E\n";
    }
    else {
        print STDERR "file is already deleted (!)\n";
    }
    exit;
}

require $file or die "require() failed\n";
handle_sigint() if $interrupted;

unlink $file or die "Can't delete file '$file': $!: $^E\n";