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fb69c67cad
The gc implementation has had precise GC for a while now, so we can enable these tests more broadly. Confirmed that they still fail with gccgo 10.2.1. Change-Id: Ic1c0394ab832024a99e34163c422941a3706e1a2 Reviewed-on: https://go-review.googlesource.com/c/go/+/281542 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
59 lines
1.1 KiB
Go
59 lines
1.1 KiB
Go
// run
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// Copyright 2013 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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// Test that defers do not prevent garbage collection.
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package main
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import (
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"runtime"
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"sync"
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"sync/atomic"
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"time"
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)
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var sink func()
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func main() {
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// Does not work with gccgo, due to partially conservative GC.
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// Try to enable when we have fully precise GC.
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if runtime.Compiler == "gccgo" {
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return
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}
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N := 10
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count := int32(N)
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var wg sync.WaitGroup
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wg.Add(N)
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for i := 0; i < N; i++ {
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go func() {
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defer wg.Done()
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v := new(string)
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f := func() {
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if *v != "" {
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panic("oops")
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}
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}
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if *v != "" {
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// let the compiler think f escapes
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sink = f
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}
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runtime.SetFinalizer(v, func(p *string) {
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atomic.AddInt32(&count, -1)
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})
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defer f()
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}()
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}
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wg.Wait()
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for i := 0; i < 3; i++ {
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time.Sleep(10 * time.Millisecond)
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runtime.GC()
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}
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if count != 0 {
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println(count, "out of", N, "finalizer are not called")
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panic("not all finalizers are called")
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}
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}
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