comparable = comparable && (ft.Equal != nil)

		offset := align(size, uintptr(ft.Align_))
		if offset < size {
			panic("reflect.StructOf: struct size would exceed virtual address space")
		}
		if ft.Align_ > typalign {
			typalign = ft.Align_
		}
		size = offset + ft.Size_
		if size < offset {
			panic("reflect.StructOf: struct size would exceed virtual address space")
		}
		f.Offset = offset

	size := uint32(128)
	for {
		var numLanguages uint32
		buf := make([]uint16, size)
		err := f(flags, &numLanguages, &buf[0], &size)
		if err == ERROR_INSUFFICIENT_BUFFER {
			continue
		}
		if err != nil {
			return nil, err
		}
		buf = buf[:size]