test/asan/TestCases/Windows/dll_seh.cpp

// RUN: %clang_cl_asan -Od %p/dll_host.cpp -Fe%t
//
// Check both -GS and -GS- builds:
// RUN: %clang_cl_asan -GS  -LD -Od %s -Fe%t.dll
// RUN: %run %t %t.dll
//
// RUN: %clang_cl_asan -GS- -LD -Od %s -Fe%t.dll
// RUN: %run %t %t.dll

#include <windows.h>
#include <assert.h>
#include <stdio.h>

// Should just "#include <sanitizer/asan_interface.h>" when C++ exceptions are
// supported and we don't need to use CL.
extern "C" bool __asan_address_is_poisoned(void *p);

void ThrowAndCatch();

__declspec(noinline)
void Throw() {
  int local, zero = 0;
  fprintf(stderr, "Throw:  %p\n", &local);
  local = 5 / zero;
}

__declspec(noinline)
void ThrowAndCatch() {
  int local;
  __try {
    Throw();
  } __except(EXCEPTION_EXECUTE_HANDLER) {
    fprintf(stderr, "__except:  %p\n", &local);
  }
}

extern "C" __declspec(dllexport)
int test_function() {
  char x[32];
  fprintf(stderr, "Before: %p poisoned: %d\n", &x,
          __asan_address_is_poisoned(x + 32));
  assert(__asan_address_is_poisoned(x + 32));
  ThrowAndCatch();
  fprintf(stderr, "After:  %p poisoned: %d\n",  &x,
          __asan_address_is_poisoned(x + 32));
  // FIXME: Invert this assertion once we fix
  // https://code.google.com/p/address-sanitizer/issues/detail?id=258
  assert(!__asan_address_is_poisoned(x + 32));
  return 0;
}