_, _ = s, b
	C.cstring_pointer_fun(nil)
}

// issue 18126

func test18126(t *testing.T) {
	p := C.malloc(1)
	_, err := C.Issue18126C(&p)
	C.free(p)
	_ = err
}

// issue 18720

func test18720(t *testing.T) {
	if got, want := C.HELLO_WORLD, "hello\000world"; got != want {
		t.Errorf("C.HELLO_WORLD == %q, expected %q", got, want)
	}

	defer func() {
		for _, cmd := range cmds {
			cmd.Process.Kill()
		}
	}()

	args := append(append([]string(nil), os.Args[1:]...), "-test.run=^Test18146$")
	for n := attempts; n > 0; n-- {
		cmd := exec.Command(os.Args[0], args...)
		cmd.Env = append(os.Environ(), "test18146=exec")
		buf := bytes.NewBuffer(nil)
		cmd.Stdout = buf
		cmd.Stderr = buf
		if err := cmd.Start(); err != nil {