compiler-rt/test/tsan/tls_race2.cpp

   1 // RUN: %clangxx_tsan %darwin_min_target_with_tls_support -O1 %s -o %t && \
   2 // RUN:   %deflake %run %t | \
   3 // RUN:   FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
   4 #include "test.h"
   5
   6 void *Thread2(void *a) {
   7   barrier_wait(&barrier);
   8   *(int*)a = 43;
   9   return 0;
  10 }
  11
  12 void *Thread(void *a) {
  13   static __thread int Var = 42;
  14   pthread_t t;
  15   pthread_create(&t, 0, Thread2, &Var);
  16   Var = 42;
  17   barrier_wait(&barrier);
  18   pthread_join(t, 0);
  19   return 0;
  20 }
  21
  22 int main() {
  23   barrier_init(&barrier, 2);
  24   pthread_t t;
  25   pthread_create(&t, 0, Thread, 0);
  26   pthread_join(t, 0);
  27   fprintf(stderr, "DONE\n");
  28   return 0;
  29 }
  30
  31 // CHECK: WARNING: ThreadSanitizer: data race
  32 // CHECK-Linux:   Location is TLS of thread T1.
  33 // CHECK-FreeBSD:   Location is TLS of thread T1.
  34 // CHECK-NetBSD:   Location is TLS of thread T1.
  35 // CHECK-Darwin:   Location is heap block of size 4
  36 // CHECK: DONE