43 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s2#include <pthread.h>3#include <stdlib.h>4#include <stdio.h>5#include <sched.h>6 7struct Cache {8 int x;9 explicit Cache(int x)10 : x(x) {11 }12};13 14void *AsyncInit(void *p) {15 return new Cache((int)(long)p);16}17 18Cache *CreateCache() {19 pthread_t t;20 pthread_create(&t, 0, AsyncInit, (void*)(long)rand());21 void *res;22 pthread_join(t, &res);23 return (Cache*)res;24}25 26void *Thread1(void *x) {27 static Cache *c = CreateCache();28 if (c->x >= RAND_MAX)29 exit(1);30 return 0;31}32 33int main() {34 pthread_t t[2];35 pthread_create(&t[0], 0, Thread1, 0);36 pthread_create(&t[1], 0, Thread1, 0);37 pthread_join(t[0], 0);38 pthread_join(t[1], 0);39 fprintf(stderr, "PASS\n");40}41 42// CHECK-NOT: WARNING: ThreadSanitizer: data race43