1 // RUN: %clangxx_tsan -O1 %s -o %t
2 // RUN: %deflake %run %t 2>&1 | FileCheck %s
3
4 #include <pthread.h>
5 #include <stdio.h>
6 #include <stdlib.h>
7 #include <string.h>
8
9 #include "../test.h"
10
11 extern "C" {
12 void __tsan_on_report(void *report);
13 int __tsan_get_report_loc(void *report, unsigned long idx, const char **type,
14 void **addr, void **start,
15 unsigned long *size, int *tid, int *fd,
16 int *suppressable, void **trace,
17 unsigned long trace_size);
18 int __tsan_get_report_loc_object_type(void *report, unsigned long idx,
19 const char **object_type);
20 }
21
Thread(void * arg)22 void *Thread(void *arg) {
23 barrier_wait(&barrier);
24 *((long *)arg) = 42;
25 return NULL;
26 }
27
main()28 int main() {
29 barrier_init(&barrier, 2);
30 void *tag = __tsan_external_register_tag("MyObject");
31 long *obj = (long *)malloc(sizeof(long));
32 fprintf(stderr, "obj = %p\n", obj);
33 // CHECK: obj = [[ADDR:0x[0-9a-f]+]]
34 __tsan_external_assign_tag(obj, tag);
35
36 pthread_t t;
37 pthread_create(&t, 0, Thread, obj);
38 *obj = 41;
39 barrier_wait(&barrier);
40 pthread_join(t, 0);
41 fprintf(stderr, "Done.\n");
42 return 0;
43 }
44
__tsan_on_report(void * report)45 void __tsan_on_report(void *report) {
46 const char *type;
47 void *addr;
48 void *start;
49 unsigned long size;
50 int tid, fd, suppressable;
51 void *trace[16] = {0};
52 __tsan_get_report_loc(report, 0, &type, &addr, &start, &size, &tid, &fd,
53 &suppressable, trace, 16);
54 fprintf(stderr, "type = %s, start = %p, size = %ld\n", type, start, size);
55 // CHECK: type = heap, start = [[ADDR]], size = 8
56
57 const char *object_type;
58 __tsan_get_report_loc_object_type(report, 0, &object_type);
59 fprintf(stderr, "object_type = %s\n", object_type);
60 // CHECK: object_type = MyObject
61 }
62
63 // CHECK: Done.
64 // CHECK: ThreadSanitizer: reported 1 warnings
65