25 lines · cpp
1// RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t && %run %t 2>&1 | FileCheck %s2#include <stdio.h>3#include <memory>4#include <thread>5 6int 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 race22 // CHECK: 42 4223 return 0;24}25