"FLEQ",
	"FLTQ",
	"FCLASSQ",
	"CSRRW",
	"CSRRS",
	"CSRRC",
	"CSRRWI",
	"CSRRSI",
	"CSRRCI",
	"ECALL",
	"SCALL",
	"EBREAK",
	"SBREAK",
	"MRET",
	"SRET",
	"DRET",
	"WFI",
	"SFENCEVMA",
	"ADDUW",
	"SH1ADD",
	"SH1ADDUW",
	"SH2ADD",
	"SH2ADDUW",
	"SH3ADD",
	"SH3ADDUW",
	"SLLIUW",
	"ANDN",
	"ORN",
	"XNOR",
	"CLZ",
	"CLZW",
	"CTZ",

		t.Logf("expected %q, got %q", "Hello world", s)
	}
}

func TestDirJoin(t *testing.T) {
	if runtime.GOOS == "windows" {
		t.Skip("skipping test on windows")
	}
	wfi, err := os.Stat("/etc/hosts")
	if err != nil {
		t.Skip("skipping test; no /etc/hosts file")
	}
	test := func(d Dir, name string) {
		f, err := d.Open(name)
		if err != nil {