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      1 // RUN: %clangxx_tsan %s -o %t
      2 // RUN: %run %t 2>&1 | FileCheck %s
      3 
      4 #include "bench.h"
      5 
      6 pthread_rwlock_t mtx;
      7 
      8 void thread(int tid) {
      9   for (int i = 0; i < bench_niter; i++) {
     10     pthread_rwlock_rdlock(&mtx);
     11     pthread_rwlock_unlock(&mtx);
     12   }
     13 }
     14 
     15 void bench() {
     16   pthread_rwlock_init(&mtx, 0);
     17   pthread_rwlock_wrlock(&mtx);
     18   pthread_rwlock_unlock(&mtx);
     19   pthread_rwlock_rdlock(&mtx);
     20   pthread_rwlock_unlock(&mtx);
     21   start_thread_group(bench_nthread, thread);
     22 }
     23 
     24 // CHECK: DONE
     25 
     26