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 <sanitizer/tsan_interface.h>
   4 #include <stdio.h>
   5
   6 namespace __tsan {
   7
   8 #if (__APPLE__)
   9 __attribute__((weak))
  10 #endif
  11 void OnPotentiallyBlockingRegionBegin() {
  12   printf("Enter __cxa_guard_acquire\n");
  13 }
  14
  15 #if (__APPLE__)
  16 __attribute__((weak))
  17 #endif
  18 void OnPotentiallyBlockingRegionEnd() { printf("Exit __cxa_guard_acquire\n"); }
  19
  20 } // namespace __tsan
  21
  22 int main(int argc, char **argv) {
  23   // CHECK: Enter main
  24   printf("Enter main\n");
  25   // CHECK-NEXT: Enter __cxa_guard_acquire
  26   // CHECK-NEXT: Exit __cxa_guard_acquire
  27   static int s = argc;
  28   (void)s;
  29   // CHECK-NEXT: Exit main
  30   printf("Exit main\n");
  31   return 0;
  32 }