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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 // Ensure that we can restore a stack of a finished thread.
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5
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6 int g_data;
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7
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8 void __attribute__((noinline)) foobar(int *p) {
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9 *p = 42;
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10 }
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11
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12 void *Thread1(void *x) {
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13 foobar(&g_data);
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14 barrier_wait(&barrier);
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15 return NULL;
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16 }
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17
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18 void *Thread2(void *x) {
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19 barrier_wait(&barrier);
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20 sleep(1); // let the thread finish and exit
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21 g_data = 43;
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22 return NULL;
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23 }
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24
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25 int main() {
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26 barrier_init(&barrier, 2);
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27 pthread_t t[2];
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28 pthread_create(&t[0], NULL, Thread1, NULL);
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29 pthread_create(&t[1], NULL, Thread2, NULL);
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30 pthread_join(t[0], NULL);
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31 pthread_join(t[1], 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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36 // CHECK: Write of size 4 at {{.*}} by thread T2:
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37 // CHECK: Previous write of size 4 at {{.*}} by thread T1:
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38 // CHECK: #0 foobar
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39 // CHECK: #1 Thread1
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40 // CHECK: Thread T1 (tid={{.*}}, finished) created by main thread at:
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41 // CHECK: #0 pthread_create
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42 // CHECK: #1 main
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