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()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 race 22 // CHECK: 42 42 23 return 0; 24 } 25