compiler-rt/test/tsan/race_stress.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
   2 #include "test.h"
   3
   4 const int kThreads = 16;
   5 const int kIters = 1000;
   6
   7 volatile int X = 0;
   8
   9 void *thr(void *arg) {
  10   for (int i = 0; i < kIters; i++)
  11     X++;
  12   return 0;
  13 }
  14
  15 int main() {
  16   pthread_t th[kThreads];
  17   for (int i = 0; i < kThreads; i++)
  18     pthread_create(&th[i], 0, thr, 0);
  19   for (int i = 0; i < kThreads; i++)
  20     pthread_join(th[i], 0);
  21   fprintf(stderr, "DONE\n");
  22 }
  23
  24 // CHECK: ThreadSanitizer: data race
  25 // CHECK: DONE