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-rw-r--r--test/fixedbugs/issue38093.go49
1 files changed, 49 insertions, 0 deletions
diff --git a/test/fixedbugs/issue38093.go b/test/fixedbugs/issue38093.go
new file mode 100644
index 0000000..db92664
--- /dev/null
+++ b/test/fixedbugs/issue38093.go
@@ -0,0 +1,49 @@
+// +build js
+// run
+
+// Copyright 2020 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.
+
+// Test race condition between timers and wasm calls that led to memory corruption.
+
+package main
+
+import (
+ "os"
+ "syscall/js"
+ "time"
+)
+
+func main() {
+ ch1 := make(chan struct{})
+
+ go func() {
+ for {
+ time.Sleep(5 * time.Millisecond)
+ ch1 <- struct{}{}
+ }
+ }()
+ go func() {
+ for {
+ time.Sleep(8 * time.Millisecond)
+ ch1 <- struct{}{}
+ }
+ }()
+ go func() {
+ time.Sleep(2 * time.Second)
+ os.Exit(0)
+ }()
+
+ for range ch1 {
+ ch2 := make(chan struct{}, 1)
+ f := js.FuncOf(func(this js.Value, args []js.Value) interface{} {
+ ch2 <- struct{}{}
+ return nil
+ })
+ defer f.Release()
+ fn := js.Global().Get("Function").New("cb", "cb();")
+ fn.Invoke(f)
+ <-ch2
+ }
+}