go bug512 源码
golang bug512 代码
文件路径：/test/fixedbugs/bug512.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()
}
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