1 // RUN: %clangxx_tsan -O1 %s -o %t
2 // RUN: %deflake %run %t 2>&1 | FileCheck %s
3
4 #include <pthread.h>
5 #include <stdint.h>
6 #include <stdio.h>
7 #include <stdlib.h>
8 #include <string.h>
9
10 #include "test.h"
11
12 extern "C" {
13 void __tsan_on_report(void *report);
14 void *__tsan_get_current_report();
15 int __tsan_get_report_data(void *report, const char **description, int *count,
16 int *stack_count, int *mop_count, int *loc_count,
17 int *mutex_count, int *thread_count,
18 int *unique_tid_count, void **sleep_trace,
19 unsigned long trace_size);
20 int __tsan_get_report_mop(void *report, unsigned long idx, int *tid,
21 void **addr, int *size, int *write, int *atomic,
22 void **trace, unsigned long trace_size);
23 int __tsan_get_report_thread(void *report, unsigned long idx, int *tid,
24 uint64_t *os_id, int *running,
25 const char **name, int *parent_tid, void **trace,
26 unsigned long trace_size);
27 }
28
29 long my_global;
30
Thread(void * a)31 void *Thread(void *a) {
32 barrier_wait(&barrier);
33 my_global = 42;
34 return NULL;
35 }
36
main()37 int main() {
38 barrier_init(&barrier, 2);
39 fprintf(stderr, "&my_global = %p\n", &my_global);
40 // CHECK: &my_global = [[GLOBAL:0x[0-9a-f]+]]
41 pthread_t t;
42 pthread_create(&t, 0, Thread, 0);
43 my_global = 41;
44 barrier_wait(&barrier);
45 pthread_join(t, 0);
46 fprintf(stderr, "Done.\n");
47 }
48
49 // Required for dyld macOS 12.0+
50 #if (__APPLE__)
51 __attribute__((weak))
52 #endif
53 __attribute__((disable_sanitizer_instrumentation))
54 extern "C" void
__tsan_on_report(void * report)55 __tsan_on_report(void *report) {
56 fprintf(stderr, "__tsan_on_report(%p)\n", report);
57 fprintf(stderr, "__tsan_get_current_report() = %p\n",
58 __tsan_get_current_report());
59 // CHECK: __tsan_on_report([[REPORT:0x[0-9a-f]+]])
60 // CHECK: __tsan_get_current_report() = [[REPORT]]
61
62 const char *description;
63 int count;
64 int stack_count, mop_count, loc_count, mutex_count, thread_count,
65 unique_tid_count;
66 void *sleep_trace[16] = {0};
67 __tsan_get_report_data(report, &description, &count, &stack_count, &mop_count,
68 &loc_count, &mutex_count, &thread_count,
69 &unique_tid_count, sleep_trace, 16);
70 fprintf(stderr, "report type = '%s', count = %d\n", description, count);
71 // CHECK: report type = 'data-race', count = 0
72
73 fprintf(stderr, "mop_count = %d\n", mop_count);
74 // CHECK: mop_count = 2
75
76 int tid;
77 void *addr;
78 int size, write, atomic;
79 void *trace[16] = {0};
80
81 __tsan_get_report_mop(report, 0, &tid, &addr, &size, &write, &atomic, trace,
82 16);
83 fprintf(stderr, "tid = %d, addr = %p, size = %d, write = %d, atomic = %d\n",
84 tid, addr, size, write, atomic);
85 // CHECK: tid = 1, addr = [[GLOBAL]], size = 8, write = 1, atomic = 0
86 fprintf(stderr, "trace[0] = %p, trace[1] = %p\n", trace[0], trace[1]);
87 // CHECK: trace[0] = 0x{{[0-9a-f]+}}, trace[1] = {{0x0|\(nil\)|\(null\)}}
88
89 __tsan_get_report_mop(report, 1, &tid, &addr, &size, &write, &atomic, trace,
90 16);
91 fprintf(stderr, "tid = %d, addr = %p, size = %d, write = %d, atomic = %d\n",
92 tid, addr, size, write, atomic);
93 // CHECK: tid = 0, addr = [[GLOBAL]], size = 8, write = 1, atomic = 0
94 fprintf(stderr, "trace[0] = %p, trace[1] = %p\n", trace[0], trace[1]);
95 // CHECK: trace[0] = 0x{{[0-9a-f]+}}, trace[1] = {{0x0|\(nil\)|\(null\)}}
96
97 fprintf(stderr, "thread_count = %d\n", thread_count);
98 // CHECK: thread_count = 2
99
100 uint64_t os_id;
101 int running;
102 const char *name;
103 int parent_tid;
104
105 __tsan_get_report_thread(report, 0, &tid, &os_id, &running, &name, &parent_tid, trace, 16);
106 fprintf(stderr, "tid = %d\n", tid);
107 // CHECK: tid = 1
108
109 __tsan_get_report_thread(report, 1, &tid, &os_id, &running, &name, &parent_tid, trace, 16);
110 fprintf(stderr, "tid = %d\n", tid);
111 // CHECK: tid = 0
112 }
113
114 // CHECK: Done.
115 // CHECK: ThreadSanitizer: reported 1 warnings
116