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tsan.go
// Copyright 2015 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 main // This program produced false race reports when run under the C/C++ // ThreadSanitizer, as it did not understand the synchronization in // the Go code. /* #cgo CFLAGS: -fsanitize=thread #cgo LDFLAGS: -fsanitize=thread int val; int getVal() { return val; } void setVal(int i) { val = i; } */ import "C" import ( "runtime" ) func main() { runtime.LockOSThread() C.setVal(1) c := make(chan bool) go func() { runtime.LockOSThread() C.setVal(2) c <- true }() <-c if v := C.getVal(); v != 2 { panic(v) } }
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