b.WriteString("0")                         // easy
	b.WriteString("123456")                    // still easy
	b.WriteString("7890")                      // easy after flush
	b.WriteString("abcdefghijklmnopqrstuvwxy") // hard
	b.WriteString("z")
	if err := b.Flush(); err != nil {
		t.Error("WriteString", err)
	}
	s := "01234567890abcdefghijklmnopqrstuvwxyz"
	if buf.String() != s {

	if parent, ok := jniTypes[dt.Name]; ok {
		// Try to make sure we're talking about a JNI type, not just some random user's
		// type that happens to use the same name.
		// C doesn't have the notion of a package, so it's hard to be certain.

		// Walk up to jobject, checking each typedef on the way.
		w := dt
		for parent != "" {
			t, ok := w.Type.(*dwarf.TypedefType)
			if !ok || t.Name != parent {
				return false