1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include "java.h"
3#include <memory.h>
4
5extern "C" bool __tsan_symbolize_external(jptr pc,
6                                          char *func_buf, jptr func_siz,
7                                          char *file_buf, jptr file_siz,
8                                          int *line, int *col) {
9  if (pc == (1234 | kExternalPCBit)) {
10    memcpy(func_buf, "MyFunc", sizeof("MyFunc"));
11    memcpy(file_buf, "MyFile.java", sizeof("MyFile.java"));
12    *line = 1234;
13    *col = 56;
14    return true;
15  }
16  return false;
17}
18
19void *Thread(void *p) {
20  barrier_wait(&barrier);
21  __tsan_write1_pc((jptr)p, 1234 | kExternalPCBit);
22  return 0;
23}
24
25int main() {
26  barrier_init(&barrier, 2);
27  int const kHeapSize = 1024 * 1024;
28  jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
29  __tsan_java_init(jheap, kHeapSize);
30  const int kBlockSize = 16;
31  __tsan_java_alloc(jheap, kBlockSize);
32  pthread_t th;
33  pthread_create(&th, 0, Thread, (void*)jheap);
34  __tsan_write1_pc((jptr)jheap, 1234 | kExternalPCBit);
35  barrier_wait(&barrier);
36  pthread_join(th, 0);
37  __tsan_java_free(jheap, kBlockSize);
38  fprintf(stderr, "DONE\n");
39  return __tsan_java_fini();
40}
41
42// CHECK: WARNING: ThreadSanitizer: data race
43// CHECK:     #0 MyFunc MyFile.java:1234:56
44// CHECK: DONE
45