1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2 #include <stdio.h>
3 #include <memory>
4 #include <thread>
5 
main()6 int main() {
7   int v1 = 0;
8   int v2 = 0;
9   std::thread t1;
10   std::thread t2;
11 
12   {
13      auto thingy = std::make_shared<int>(42);
14      t1 = std::thread([thingy, &v1] { v1 = *thingy; });
15      t2 = std::thread([thingy, &v2] { v2 = *thingy; });
16   }
17 
18   t1.join();
19   t2.join();
20   printf("%d %d\n", v1, v2);
21   // CHECK-NOT: ThreadSanitizer: data race
22   // CHECK: 42 42
23   return 0;
24 }
25