compiler-rt/test/tsan/static_init4.cpp

   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 #include <sched.h>
   6
   7 struct Cache {
   8   int x;
   9   explicit Cache(int x)
  10     : x(x) {
  11   }
  12 };
  13
  14 int g_other;
  15
  16 Cache *CreateCache() {
  17   g_other = rand();
  18   return new Cache(rand());
  19 }
  20
  21 void *Thread1(void *x) {
  22   static Cache *c = CreateCache();
  23   if (c->x == g_other)
  24     exit(1);
  25   return 0;
  26 }
  27
  28 int main() {
  29   pthread_t t[2];
  30   pthread_create(&t[0], 0, Thread1, 0);
  31   pthread_create(&t[1], 0, Thread1, 0);
  32   pthread_join(t[0], 0);
  33   pthread_join(t[1], 0);
  34   fprintf(stderr, "PASS\n");
  35 }
  36
  37 // CHECK-NOT: WARNING: ThreadSanitizer: data race