// compile // Copyright 2026 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. package p const W = 32 << (^uintptr(0) >> 63) // 32 or 64 type T struct { a [1<<(W-30) - 1]byte } func f(t *T) { *t = T{} }