java_race_pc.cc revision cdce50bda3603770cc4ef80cbb613c78b8e47a17 
1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2#include "java.h"
3
4void foobar() {
5}
6
7void barbaz() {
8}
9
10void *Thread(void *p) {
11  barrier_wait(&barrier);
12  __tsan_read1_pc((jptr)p, (jptr)foobar + 1);
13  return 0;
14}
15
16int main() {
17  barrier_init(&barrier, 2);
18  int const kHeapSize = 1024 * 1024;
19  jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
20  __tsan_java_init(jheap, kHeapSize);
21  const int kBlockSize = 16;
22  __tsan_java_alloc(jheap, kBlockSize);
23  pthread_t th;
24  pthread_create(&th, 0, Thread, (void*)jheap);
25  __tsan_write1_pc((jptr)jheap, (jptr)barbaz + 1);
26  barrier_wait(&barrier);
27  pthread_join(th, 0);
28  __tsan_java_free(jheap, kBlockSize);
29  fprintf(stderr, "DONE\n");
30  return __tsan_java_fini();
31}
32
33// CHECK: WARNING: ThreadSanitizer: data race
34// CHECK:     #0 foobar
35// CHECK:     #0 barbaz
36// CHECK: DONE
37