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150
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1 // RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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2
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3 // pthread barriers are not available on OS X
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4 // UNSUPPORTED: darwin
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5
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6 #include <pthread.h>
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7 #include <stdio.h>
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8 #include <stddef.h>
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9 #include <unistd.h>
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10
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11 pthread_barrier_t B;
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12 int Global;
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13
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14 void *Thread1(void *x) {
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15 if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD)
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16 pthread_barrier_destroy(&B);
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17 return NULL;
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18 }
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19
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20 void *Thread2(void *x) {
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21 if (pthread_barrier_wait(&B) == PTHREAD_BARRIER_SERIAL_THREAD)
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22 pthread_barrier_destroy(&B);
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23 return NULL;
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24 }
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25
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26 int main() {
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27 pthread_barrier_init(&B, 0, 2);
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28 pthread_t t;
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29 pthread_create(&t, NULL, Thread1, NULL);
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30 Thread2(0);
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31 pthread_join(t, NULL);
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32 return 0;
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33 }
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34
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35 // CHECK: WARNING: ThreadSanitizer: data race
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