1 // Copyright 2023 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package p 6 7 type S struct { 8 a [1]int 9 } 10 11 func _(m map[int]S, key int) { 12 m /* ERROR "cannot assign to m[key].a[0] (neither addressable nor a map index expression)" */ [key].a[0] = 0 13 } 14