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4e2410617d
Change-Id: Ifdb4f4f4fab8d45847ca525198b3960f87799f0c Reviewed-on: https://go-review.googlesource.com/c/go/+/383034 Trust: Keith Randall <khr@golang.org> Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Dan Scales <danscales@google.com> Trust: Dan Scales <danscales@google.com>
36 lines
574 B
Go
36 lines
574 B
Go
// compile -G=3 -d=checkptr
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// Copyright 2022 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"sync/atomic"
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"unsafe"
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)
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type Node[T any] struct {
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Next *Node[T]
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// Prev *Node[T]
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}
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func LoadPointer[T any](addr **T) (val *T) {
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return (*T)(
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atomic.LoadPointer(
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(*unsafe.Pointer)(unsafe.Pointer(addr)),
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))
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}
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func (q *Node[T]) Pop() {
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var tail, head *Node[T]
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if head == LoadPointer(&tail) {
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}
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}
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func main() {
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ch := Node[uint64]{}
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ch.Pop()
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}
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