src/libcompiler_builtins/compiler-rt/test/tsan/mutexset7.cc

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
   2 #include "test.h"
   3
   4 int Global;
   5 __thread int huge[1024*1024];
   6
   7 void *Thread1(void *x) {
   8   barrier_wait(&barrier);
   9   Global++;
  10   return NULL;
  11 }
  12
  13 void *Thread2(void *x) {
  14   pthread_mutex_t *mtx = new pthread_mutex_t;
  15   pthread_mutex_init(mtx, 0);
  16   pthread_mutex_lock(mtx);
  17   Global--;
  18   pthread_mutex_unlock(mtx);
  19   pthread_mutex_destroy(mtx);
  20   delete mtx;
  21   barrier_wait(&barrier);
  22   return NULL;
  23 }
  24
  25 int main() {
  26   barrier_init(&barrier, 2);
  27   pthread_t t[2];
  28   pthread_create(&t[0], NULL, Thread1, NULL);
  29   pthread_create(&t[1], NULL, Thread2, NULL);
  30   pthread_join(t[0], NULL);
  31   pthread_join(t[1], NULL);
  32 }
  33
  34 // CHECK: WARNING: ThreadSanitizer: data race
  35 // CHECK: Write of size 4 at {{.*}} by thread T1:
  36 // CHECK: Previous write of size 4 at {{.*}} by thread T2
  37 // CHECK:                                      (mutexes: write [[M1:M[0-9]+]]):
  38 // CHECK: Mutex [[M1]] is already destroyed
  39 // CHECK-NOT: Mutex {{.*}} created at
  40