llvm-project

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// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
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#include "test.h"
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// OS X doesn't have pthread_setname_np(tid, name).
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// UNSUPPORTED: darwin
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#if defined(__FreeBSD__)
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#include <pthread_np.h>
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#define tsan_pthread_setname_np pthread_set_name_np
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#elif defined(__NetBSD__)
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#define tsan_pthread_setname_np(a, b) pthread_setname_np((a), "%s", (void *)(b))
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#else
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#define tsan_pthread_setname_np pthread_setname_np
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#endif
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long long Global;
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void *Thread1(void *x) {
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  barrier_wait(&barrier);
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  Global++;
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  return 0;
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}
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void *Thread2(void *x) {
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  tsan_pthread_setname_np(pthread_self(), "foobar2");
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  Global--;
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  barrier_wait(&barrier);
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  return 0;
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}
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int main() {
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  barrier_init(&barrier, 3);
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  pthread_t t[2];
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  pthread_create(&t[0], 0, Thread1, 0);
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  pthread_create(&t[1], 0, Thread2, 0);
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  tsan_pthread_setname_np(t[0], "foobar1");
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  barrier_wait(&barrier);
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  pthread_join(t[0], NULL);
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  pthread_join(t[1], NULL);
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}
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK:   Thread T1 'foobar1'
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// CHECK:   Thread T2 'foobar2'
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