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https://github.com/golang/go
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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
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// Copyright 2021 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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// Gccgo did not make a copy of a value receiver when using a
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// goroutine to call a method.
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package main
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import (
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"sync"
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"sync/atomic"
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)
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var wg sync.WaitGroup
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type S struct {
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i1, i2 int32
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}
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var done int32
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func (s S) Check(v1, v2 int32) {
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for {
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if g1 := atomic.LoadInt32(&s.i1); v1 != g1 {
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panic(g1)
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}
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if g2 := atomic.LoadInt32(&s.i2); v2 != g2 {
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panic(g2)
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}
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if atomic.LoadInt32(&done) != 0 {
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break
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}
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}
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wg.Done()
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}
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func F() {
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s := S{1, 2}
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go s.Check(1, 2)
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atomic.StoreInt32(&s.i1, 3)
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atomic.StoreInt32(&s.i2, 4)
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atomic.StoreInt32(&done, 1)
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}
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func main() {
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wg.Add(1)
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F()
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wg.Wait()
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}
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