xref: /llvm-project/compiler-rt/test/tsan/tls_race.cpp (revision 562c6b80192243b141d1ddd15d1827c860992147) 
1*562c6b80SDan Liew // RUN: %clangxx_tsan %darwin_min_target_with_tls_support -O1 %s -o %t && \
2*562c6b80SDan Liew // RUN:   %deflake %run %t | \
3*562c6b80SDan Liew // RUN:   FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
4bcaeed49SFangrui Song #include "test.h"
5bcaeed49SFangrui Song 
Thread(void * a)6bcaeed49SFangrui Song void *Thread(void *a) {
7bcaeed49SFangrui Song   barrier_wait(&barrier);
8bcaeed49SFangrui Song   *(int*)a = 43;
9bcaeed49SFangrui Song   return 0;
10bcaeed49SFangrui Song }
11bcaeed49SFangrui Song 
main()12bcaeed49SFangrui Song int main() {
13bcaeed49SFangrui Song   barrier_init(&barrier, 2);
14bcaeed49SFangrui Song   static __thread int Var = 42;
15bcaeed49SFangrui Song   pthread_t t;
16bcaeed49SFangrui Song   pthread_create(&t, 0, Thread, &Var);
17bcaeed49SFangrui Song   Var = 43;
18bcaeed49SFangrui Song   barrier_wait(&barrier);
19bcaeed49SFangrui Song   pthread_join(t, 0);
20bcaeed49SFangrui Song }
21bcaeed49SFangrui Song 
22bcaeed49SFangrui Song // CHECK: WARNING: ThreadSanitizer: data race
23bcaeed49SFangrui Song // CHECK-Linux:   Location is TLS of main thread.
24bcaeed49SFangrui Song // CHECK-FreeBSD:   Location is TLS of main thread.
25bcaeed49SFangrui Song // CHECK-NetBSD:   Location is TLS of main thread.
26bcaeed49SFangrui Song // CHECK-Darwin:   Location is heap block of size 4
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