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// run
//go:build js
// 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
}
}