// run // Copyright 2020 The Go Authors. All rights reserved. Use of this // source code is governed by a BSD-style license that can be found in // the LICENSE file. //go:build cgo package main import "runtime/cgo" type NIH struct { _ cgo.Incomplete } type T struct { x *NIH p *int } var y NIH var z int func main() { a := []T{{&y, &z}} a = append(a, T{&y, &z}) if a[1].x == nil { panic("pointer not written") } }