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1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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2 #include <pthread.h>
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3 #include <stdlib.h>
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4 #include <stdio.h>
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5
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6 struct Cache {
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7 int x;
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8 explicit Cache(int x)
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9 : x(x) {
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10 }
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11 };
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12
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13 void foo(Cache *my) {
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14 static Cache *c = my ? my : new Cache(rand());
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15 if (c->x >= RAND_MAX)
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16 exit(1);
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17 }
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18
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19 void *Thread(void *x) {
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20 foo(new Cache(rand()));
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21 return 0;
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22 }
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23
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24 int main() {
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25 pthread_t t[2];
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26 pthread_create(&t[0], 0, Thread, 0);
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27 pthread_create(&t[1], 0, Thread, 0);
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28 pthread_join(t[0], 0);
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29 pthread_join(t[1], 0);
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30 fprintf(stderr, "PASS\n");
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31 }
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32
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33 // CHECK-NOT: WARNING: ThreadSanitizer: data race
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