mirror of
https://github.com/golang/go
synced 2024-11-18 08:24:44 -07:00
5423f6023c
Change-Id: Ie52d70d2ae8a21acacf0745a4093650b03ac43f9 Reviewed-on: https://go-review.googlesource.com/c/go/+/302371 Trust: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Than McIntosh <thanm@google.com> Reviewed-by: Cherry Zhang <cherryyz@google.com>
53 lines
793 B
Go
53 lines
793 B
Go
// run
|
|
|
|
// Copyright 2021 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.
|
|
|
|
// Gccgo did not make a copy of a value receiver when using a
|
|
// goroutine to call a method.
|
|
|
|
package main
|
|
|
|
import (
|
|
"sync"
|
|
"sync/atomic"
|
|
)
|
|
|
|
var wg sync.WaitGroup
|
|
|
|
type S struct {
|
|
i1, i2 int32
|
|
}
|
|
|
|
var done int32
|
|
|
|
func (s S) Check(v1, v2 int32) {
|
|
for {
|
|
if g1 := atomic.LoadInt32(&s.i1); v1 != g1 {
|
|
panic(g1)
|
|
}
|
|
if g2 := atomic.LoadInt32(&s.i2); v2 != g2 {
|
|
panic(g2)
|
|
}
|
|
if atomic.LoadInt32(&done) != 0 {
|
|
break
|
|
}
|
|
}
|
|
wg.Done()
|
|
}
|
|
|
|
func F() {
|
|
s := S{1, 2}
|
|
go s.Check(1, 2)
|
|
atomic.StoreInt32(&s.i1, 3)
|
|
atomic.StoreInt32(&s.i2, 4)
|
|
atomic.StoreInt32(&done, 1)
|
|
}
|
|
|
|
func main() {
|
|
wg.Add(1)
|
|
F()
|
|
wg.Wait()
|
|
}
|