| 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 | |