| // 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) |
| } |
| } |
