compiler-rt/test/tsan/cxa_guard_acquire.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
   2
   3 #include <stdio.h>
   4
   5 namespace __tsan {
   6
   7 #if (__APPLE__)
   8 __attribute__((weak))
   9 #endif
  10 void OnPotentiallyBlockingRegionBegin() {
  11   printf("Enter __cxa_guard_acquire\n");
  12 }
  13
  14 #if (__APPLE__)
  15 __attribute__((weak))
  16 #endif
  17 void OnPotentiallyBlockingRegionEnd() { printf("Exit __cxa_guard_acquire\n"); }
  18
  19 } // namespace __tsan
  20
  21 int main(int argc, char **argv) {
  22   // CHECK: Enter main
  23   printf("Enter main\n");
  24   // CHECK-NEXT: Enter __cxa_guard_acquire
  25   // CHECK-NEXT: Exit __cxa_guard_acquire
  26   static int s = argc;
  27   (void)s;
  28   // CHECK-NEXT: Exit main
  29   printf("Exit main\n");
  30   return 0;
  31 }