names, _ := dir.Readdirnames(1025)
	if len(names) < 1025 {
		t.Fatalf("RemoveAll(<read-only directory>) unexpectedly removed %d read-only files from that directory", 1025-len(names))
	}
}

func TestRemoveAllNoFcntl(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping in short mode")
	}

	const env = "GO_TEST_REMOVE_ALL_NO_FCNTL"
	if dir := Getenv(env); dir != "" {
		if err := RemoveAll(dir); err != nil {