1 files changed, 44 insertions, 0 deletions
diff --git a/misc/cgo/testsanitizers/testdata/tsan.go b/misc/cgo/testsanitizers/testdata/tsan.go
new file mode 100644
index 0000000..6c377a7
--- /dev/null
+++ b/misc/cgo/testsanitizers/testdata/tsan.go
@@ -0,0 +1,44 @@
+// 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)
+	}
+}