}
}

// There are no tags here, so S should not appear.
type BugZ struct {
	BugA
	BugC
	BugY // Contains a tagged S field through BugD; should not dominate.
}

func TestDuplicatedFieldDisappears(t *testing.T) {
	v := BugZ{
		BugA{"BugA"},
		BugC{"BugC"},
		BugY{
			BugA{"nested BugA"},
			BugD{"nested BugD"},
		},
	}
	b, err := Marshal(v)
	if err != nil {

	// Nil interface values in if.
	{"bug4", "{{if .Empty0}}non-nil{{else}}nil{{end}}", "nil", tVal, true},
	// Stringer.
	{"bug5", "{{.Str}}", "foozle", tVal, true},
	{"bug5a", "{{.Err}}", "erroozle", tVal, true},
	// Args need to be indirected and dereferenced sometimes.
	{"bug6a", "{{vfunc .V0 .V1}}", "vfunc", tVal, true},
	{"bug6b", "{{vfunc .V0 .V0}}", "vfunc", tVal, true},
	{"bug6c", "{{vfunc .V1 .V0}}", "vfunc", tVal, true},