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1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
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2
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3 // Also check that atomics instrumentation can be configured by either driver or
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4 // legacy flags:
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5
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6 // RUN: %clangxx_tsan -O1 %s -o %t -fno-sanitize-thread-atomics && not %deflake %run %t 2>&1 \
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7 // RUN: | FileCheck --allow-empty --check-prefix=CHECK-NO-ATOMICS %s
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8 // RUN: %clangxx_tsan -O1 %s -o %t -mllvm -tsan-instrument-atomics=0 && not %deflake %run %t 2>&1 \
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9 // RUN: | FileCheck --allow-empty --check-prefix=CHECK-NO-ATOMICS %s <%t
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10
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11 #include "test.h"
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12
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13 void *Thread(void *a) {
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14 __atomic_fetch_add((int*)a, 1, __ATOMIC_SEQ_CST);
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15 barrier_wait(&barrier);
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16 return 0;
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17 }
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18
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19 int main() {
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20 barrier_init(&barrier, 2);
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21 int *a = new int(0);
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22 pthread_t t;
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23 pthread_create(&t, 0, Thread, a);
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24 barrier_wait(&barrier);
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25 delete a;
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26 pthread_join(t, 0);
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27 }
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28
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29 // CHECK: WARNING: ThreadSanitizer: data race
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30
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31 // CHECK-NO-ATOMICS-NOT: WARNING: ThreadSanitizer: data race
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