// Copyright 2012 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 race_test import ( "runtime" "sync" "testing" "time" ) func TestNoRaceFin(t *testing.T) { c := make(chan bool) go func() { x := new(string) runtime.SetFinalizer(x, func(x *string) { *x = "foo" }) *x = "bar" c <- true }() <-c runtime.GC() time.Sleep(100 * time.Millisecond) } var finVar struct { sync.Mutex cnt int } func TestNoRaceFinGlobal(t *testing.T) { c := make(chan bool) go func() { x := new(string) runtime.SetFinalizer(x, func(x *string) { finVar.Lock() finVar.cnt++ finVar.Unlock() }) c <- true }() <-c runtime.GC() time.Sleep(100 * time.Millisecond) finVar.Lock() finVar.cnt++ finVar.Unlock() } func TestRaceFin(t *testing.T) { c := make(chan bool) y := 0 _ = y go func() { x := new(string) runtime.SetFinalizer(x, func(x *string) { y = 42 }) c <- true }() <-c runtime.GC() time.Sleep(100 * time.Millisecond) y = 66 }