names = append(names, f.Name)
		if _, err := f.Open(); err != nil {
			t.Errorf("Error opening %q: %v", f.Name, err)
		}
		if _, err := r.Open(f.Name); err == nil {
			t.Errorf("Opening %q with fs.FS API succeeded", f.Name)
		}
	}
	if !reflect.DeepEqual(names, entryNames) {
		t.Errorf("Unexpected file entries: %q", names)
	}
	if _, err := r.Open(""); err == nil {

		for n, strlen := range strlens {
			data := strdata[n]
			if len(data) <= strlen {
				fatalf("invalid string literal")
			}
			strs[n] = data[:strlen]
		}
	}

	if f, err := macho.Open(gccTmp()); err == nil {
		defer f.Close()
		d, err := f.DWARF()
		if err != nil {
			fatalf("cannot load DWARF output from %s: %v", gccTmp(), err)
		}
		bo := f.ByteOrder
		if f.Symtab != nil {