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issue50993.go
// compile -d=checkptr // Copyright 2022 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 main import ( "sync/atomic" "unsafe" ) type Node[T any] struct { Next *Node[T] // Prev *Node[T] } func LoadPointer[T any](addr **T) (val *T) { return (*T)( atomic.LoadPointer( (*unsafe.Pointer)(unsafe.Pointer(addr)), )) } func (q *Node[T]) Pop() { var tail, head *Node[T] if head == LoadPointer(&tail) { } } func main() { ch := Node[uint64]{} ch.Pop() }
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