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150
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1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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2 #include "test.h"
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3
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4 int Global;
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5 pthread_mutex_t *mtx;
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6
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7 void *Thread1(void *x) {
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8 barrier_wait(&barrier);
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9 pthread_mutex_lock(mtx);
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10 Global++;
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11 pthread_mutex_unlock(mtx);
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12 return NULL;
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13 }
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14
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15 void *Thread2(void *x) {
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16 Global--;
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17 barrier_wait(&barrier);
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18 return NULL;
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19 }
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20
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21 int main() {
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22 barrier_init(&barrier, 2);
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23 // CHECK: WARNING: ThreadSanitizer: data race
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24 // CHECK: Write of size 4 at {{.*}} by thread T1
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25 // CHECK: (mutexes: write [[M1:M[0-9]+]]):
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26 // CHECK: Previous write of size 4 at {{.*}} by thread T2:
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27 // CHECK: Mutex [[M1]] (0x{{.*}}) created at:
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28 // CHECK: #0 pthread_mutex_init
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29 // CHECK: #1 main {{.*}}mutexset8.cpp
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30 mtx = new pthread_mutex_t;
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31 pthread_mutex_init(mtx, 0);
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32 pthread_t t[2];
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33 pthread_create(&t[0], NULL, Thread1, NULL);
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34 pthread_create(&t[1], NULL, Thread2, NULL);
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35 pthread_join(t[0], NULL);
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36 pthread_join(t[1], NULL);
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37 pthread_mutex_destroy(mtx);
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38 delete mtx;
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39 }
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