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1 // RUN: %clangxx_tsan %s -o %t
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2 // RUN: not %run %t 2>&1 | FileCheck %s
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3 // RUN: %env_tsan_opts=detect_deadlocks=1 not %run %t 2>&1 | FileCheck %s
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4 // RUN: %env_tsan_opts=detect_deadlocks=0 %run %t 2>&1 | FileCheck %s --check-prefix=DISABLED
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5 // RUN: echo "deadlock:main" > %t.supp
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6 // RUN: %env_tsan_opts=suppressions='%t.supp' %run %t 2>&1 | FileCheck %s --check-prefix=DISABLED
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7 // RUN: echo "deadlock:zzzz" > %t.supp
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8 // RUN: %env_tsan_opts=suppressions='%t.supp' not %run %t 2>&1 | FileCheck %s
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9 #include <pthread.h>
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10 #include <stdio.h>
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11
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12 int main() {
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13 pthread_mutex_t mu1, mu2;
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14 pthread_mutex_init(&mu1, NULL);
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15 pthread_mutex_init(&mu2, NULL);
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16
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17 // mu1 => mu2
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18 pthread_mutex_lock(&mu1);
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19 pthread_mutex_lock(&mu2);
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20 pthread_mutex_unlock(&mu2);
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21 pthread_mutex_unlock(&mu1);
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22
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23 // mu2 => mu1
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24 pthread_mutex_lock(&mu2);
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25 pthread_mutex_lock(&mu1);
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26 // CHECK: ThreadSanitizer: lock-order-inversion (potential deadlock)
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27 // DISABLED-NOT: ThreadSanitizer
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28 // DISABLED: PASS
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29 pthread_mutex_unlock(&mu1);
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30 pthread_mutex_unlock(&mu2);
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31
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32 pthread_mutex_destroy(&mu1);
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33 pthread_mutex_destroy(&mu2);
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34 fprintf(stderr, "PASS\n");
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35 }
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