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