for _, arg := range fields[1:] {
		for _, elem := range strings.Split(arg, ",") {
			if strings.HasPrefix(elem, "!!") {
				check.pass.Reportf(pos, "invalid double negative in build constraint: %s", arg)
				check.crossCheck = false
				continue
			}
			elem = strings.TrimPrefix(elem, "!")
			for _, c := range elem {
				if !unicode.IsLetter(c) && !unicode.IsDigit(c) && c != '_' && c != '.' {

			}
			// Clear key's pointer.
			k.str = nil
			e := add(unsafe.Pointer(b), dataOffset+abi.MapBucketCount*2*goarch.PtrSize+i*uintptr(t.ValueSize))
			if t.Elem.Pointers() {
				memclrHasPointers(e, t.Elem.Size_)
			} else {
				memclrNoHeapPointers(e, t.Elem.Size_)
			}
			b.tophash[i] = emptyOne
			// If the bucket now ends in a bunch of emptyOne states,
			// change those to emptyRest states.

					*cause = "conversion of slice to array requires go1.20 or later"
				}
				return false
			}
		case *Pointer:
			if a, _ := under(a.Elem()).(*Array); a != nil {
				if Identical(s.Elem(), a.Elem()) {
					if check == nil || check.allowVersion(x, go1_17) {
						return true
					}
					// check != nil
					if cause != nil {
						*cause = "conversion of slice to array pointer requires go1.17 or later"
					}

				w.typeName(obj)
				break
			}
		}
		w.string(t.name)

	case *Array:
		w.byte('[')
		w.string(strconv.FormatInt(t.len, 10))
		w.byte(']')
		w.typ(t.elem)

	case *Slice:
		w.string("[]")
		w.typ(t.elem)

	case *Struct:
		w.string("struct{")
		for i, f := range t.fields {
			if i > 0 {
				w.byte(';')
			}

	var list []mapFileInfo
	var elem string
	var need = make(map[string]bool)
	if name == "." {
		elem = "."
		for fname, f := range fsys {
			i := strings.Index(fname, "/")
			if i < 0 {
				if fname != "." {
					list = append(list, mapFileInfo{fname, f})
				}
			} else {
				need[fname[:i]] = true
			}
		}
	} else {
		elem = name[strings.LastIndex(name, "/")+1:]
		prefix := name + "/"

	}
	val := reflectlite.ValueOf(target)
	typ := val.Type()
	if typ.Kind() != reflectlite.Ptr || val.IsNil() {
		panic("errors: target must be a non-nil pointer")
	}
	targetType := typ.Elem()
	if targetType.Kind() != reflectlite.Interface && !targetType.Implements(errorType) {
		panic("errors: *target must be interface or implement error")
	}
	return as(err, target, val, targetType)
}

		value = reflect.New(value.Type().Elem())
	}
	modelType := reflect.Indirect(value).Type()

	if modelType.Kind() == reflect.Interface {
		modelType = reflect.Indirect(reflect.ValueOf(dest)).Elem().Type()
	}

	for modelType.Kind() == reflect.Slice || modelType.Kind() == reflect.Array || modelType.Kind() == reflect.Ptr {
		modelType = modelType.Elem()
	}

	if modelType.Kind() != reflect.Struct {

				w.typeName(obj)
				break
			}
		}
		w.string(t.name)

	case *Array:
		w.byte('[')
		w.string(strconv.FormatInt(t.len, 10))
		w.byte(']')
		w.typ(t.elem)

	case *Slice:
		w.string("[]")
		w.typ(t.elem)

	case *Struct:
		w.string("struct{")
		for i, f := range t.fields {
			if i > 0 {
				w.byte(';')
			}

			// assume they are the same to avoid spurious follow-on errors.
			return (x.len < 0 || y.len < 0 || x.len == y.len) && c.identical(x.elem, y.elem, p)
		}

	case *Slice:
		// Two slice types are identical if they have identical element types.
		if y, ok := y.(*Slice); ok {
			return c.identical(x.elem, y.elem, p)
		}

	case *Struct:
		// Two struct types are identical if they have the same sequence of fields,

			typ.len = -1
		}
		typ.elem = check.varType(e.Elem)
		if typ.len >= 0 {
			return typ
		}
		// report error if we encountered [...]

	case *syntax.SliceType:
		typ := new(Slice)
		setDefType(def, typ)
		typ.elem = check.varType(e.Elem)
		return typ

	case *syntax.DotsType:
		// dots are handled explicitly where they are legal