func TestExecHelper(t *testing.T) {
	if os.Getenv("GO_WANT_HELPER_PROCESS") != "2" {
		return
	}

	// We don't have to worry about restoring these values.
	// We are in a child process that only runs this test,
	// and we are going to call syscall.Exec anyhow.
	os.Setenv("GO_WANT_HELPER_PROCESS", "3")

	stop := time.Now().Add(time.Second)
	for i := 0; i < 100; i++ {

	if err != nil {
		t.Skipf("skipping because Executable failed: %v", err)
	}

	t.Logf("GO_WANT_HELPER_PROCESS=1 %s -f -e clock_gettime %s -test.run=^TestUsingVDSO$", strace, exe)
	cmd := testenv.Command(t, strace, "-f", "-e", "clock_gettime", exe, "-test.run=^TestUsingVDSO$")
	cmd = testenv.CleanCmdEnv(cmd)
	cmd.Env = append(cmd.Env, "GO_WANT_HELPER_PROCESS=1")
	out, err := cmd.CombinedOutput()
	if len(out) > 0 {
		t.Logf("%s", out)
	}