1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2 #include "java.h"
3 #include <memory.h>
4
__tsan_symbolize_external(jptr pc,char * func_buf,jptr func_siz,char * file_buf,jptr file_siz,int * line,int * col)5 extern "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
Thread(void * p)19 void *Thread(void *p) {
20 barrier_wait(&barrier);
21 __tsan_write1_pc((jptr)p, 1234 | kExternalPCBit);
22 return 0;
23 }
24
main()25 int 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