1// RUN: %clangxx_tsan -O1 %s -o %T/simple_stack2.cc.exe && %deflake %run %T/simple_stack2.cc.exe | FileCheck %s
2#include "test.h"
3
4int Global;
5
6void __attribute__((noinline)) foo1() {
7  Global = 42;
8}
9
10void __attribute__((noinline)) bar1() {
11  volatile int tmp = 42;
12  int tmp2 = tmp;
13  (void)tmp2;
14  foo1();
15}
16
17void __attribute__((noinline)) foo2() {
18  volatile int tmp = Global;
19  int tmp2 = tmp;
20  (void)tmp2;
21}
22
23void __attribute__((noinline)) bar2() {
24  volatile int tmp = 42;
25  int tmp2 = tmp;
26  (void)tmp2;
27  foo2();
28}
29
30void *Thread1(void *x) {
31  barrier_wait(&barrier);
32  bar1();
33  return NULL;
34}
35
36int main() {
37  barrier_init(&barrier, 2);
38  pthread_t t;
39  pthread_create(&t, NULL, Thread1, NULL);
40  bar2();
41  barrier_wait(&barrier);
42  pthread_join(t, NULL);
43}
44
45// CHECK:      WARNING: ThreadSanitizer: data race
46// CHECK-NEXT:   Write of size 4 at {{.*}} by thread T1:
47// CHECK-NEXT:     #0 foo1{{.*}} {{.*}}simple_stack2.cc:7{{(:10)?}} (simple_stack2.cc.exe+{{.*}})
48// CHECK-NEXT:     #1 bar1{{.*}} {{.*}}simple_stack2.cc:14{{(:3)?}} (simple_stack2.cc.exe+{{.*}})
49// CHECK-NEXT:     #2 Thread1{{.*}} {{.*}}simple_stack2.cc:32{{(:3)?}} (simple_stack2.cc.exe+{{.*}})
50// CHECK:        Previous read of size 4 at {{.*}} by main thread:
51// CHECK-NEXT:     #0 foo2{{.*}} {{.*}}simple_stack2.cc:18{{(:22)?}} (simple_stack2.cc.exe+{{.*}})
52// CHECK-NEXT:     #1 bar2{{.*}} {{.*}}simple_stack2.cc:27{{(:3)?}} (simple_stack2.cc.exe+{{.*}})
53// CHECK-NEXT:     #2 main{{.*}} {{.*}}simple_stack2.cc:40{{(:3)?}} (simple_stack2.cc.exe+{{.*}})
54