1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s 2 #include <pthread.h> 3 #include <stdlib.h> 4 #include <stdio.h> 5 6 struct Cache { 7 int x; 8 explicit Cache(int x) 9 : x(x) { 10 } 11 }; 12 13 void foo(Cache *my) { 14 static Cache *c = my ? my : new Cache(rand()); 15 if (c->x >= RAND_MAX) 16 exit(1); 17 } 18 19 void *Thread(void *x) { 20 foo(new Cache(rand())); 21 return 0; 22 } 23 24 int main() { 25 pthread_t t[2]; 26 pthread_create(&t[0], 0, Thread, 0); 27 pthread_create(&t[1], 0, Thread, 0); 28 pthread_join(t[0], 0); 29 pthread_join(t[1], 0); 30 printf("PASS\n"); 31 } 32 33 // CHECK-NOT: WARNING: ThreadSanitizer: data race 34
