1  // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
 2  #include "java.h"
 3  
 4  void *Thread(void *p) {
 5    barrier_wait(&barrier);
 6    __tsan_java_finalize();
 7    *(int*)p = 42;
 8    return 0;
 9  }
10  
11  int main() {
12    barrier_init(&barrier, 2);
13    int const kHeapSize = 1024 * 1024;
14    jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
15    __tsan_java_init(jheap, kHeapSize);
16    const int kBlockSize = 16;
17    __tsan_java_alloc(jheap, kBlockSize);
18    pthread_t th;
19    pthread_create(&th, 0, Thread, (void*)jheap);
20    *(int*)jheap = 43;
21    barrier_wait(&barrier);
22    pthread_join(th, 0);
23    __tsan_java_free(jheap, kBlockSize);
24    fprintf(stderr, "DONE\n");
25    return __tsan_java_fini();
26  }
27  
28  // CHECK-NOT: WARNING: ThreadSanitizer: data race
29  // CHECK: DONE