xref: /llvm-project-15.0.7/compiler-rt/test/asan/TestCases/Windows/seh.cpp (revision 673dc3d4)

// Make sure that ASan works with SEH in both Clang and MSVC. MSVC uses a
// different EH personality depending on the -GS setting, so test both -GS+ and
// -GS-.
//
// RUN: cl -c %s -Fo%t.obj -DCOMPILE_SEH
// RUN: %clangxx_asan -o %t.exe %s %t.obj
// RUN: %run %t.exe
//
// RUN: cl -GS- -c %s -Fo%t.obj -DCOMPILE_SEH
// RUN: %clangxx_asan -o %t.exe %s %t.obj
// RUN: %run %t.exe
//
// RUN: %clang_cl_asan %s -DCOMPILE_SEH -Fe%t.exe
// RUN: %run %t.exe

#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();

#if defined(COMPILE_SEH)
__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);
  }
}
#endif

#if defined(__clang__)
int main() {
  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));
}
#endif