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Diffstat (limited to '')
-rw-r--r-- | test/fixedbugs/bug512.go | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/test/fixedbugs/bug512.go b/test/fixedbugs/bug512.go new file mode 100644 index 0000000..6be6eb9 --- /dev/null +++ b/test/fixedbugs/bug512.go @@ -0,0 +1,52 @@ +// 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() +} |