compiler-rt/test/hwasan/TestCases/new-test.cpp

   1 // Test basic new functionality.
   2 // RUN: %clangxx_hwasan -std=c++17 %s -o %t
   3 // RUN: %run %t
   4
   5 #include <cassert>
   6 #include <cstdint>
   7 #include <cstdlib>
   8 #include <new>
   9 #include <sanitizer/allocator_interface.h>
  10 #include <sanitizer/hwasan_interface.h>
  11
  12 int main() {
  13   __hwasan_enable_allocator_tagging();
  14
  15   size_t volatile n = 0;
  16   char *a1 = new char[n];
  17   assert(a1 != nullptr);
  18   assert(__sanitizer_get_allocated_size(a1) == 0);
  19   delete[] a1;
  20
  21 #if defined(__cpp_aligned_new) &&                                              \
  22     (!defined(__GLIBCXX__) ||                                                  \
  23      (defined(_GLIBCXX_RELEASE) && _GLIBCXX_RELEASE >= 7))
  24   // Aligned new/delete
  25   constexpr auto kAlign = std::align_val_t{8};
  26   void *a2 = ::operator new(4, kAlign);
  27   assert(a2 != nullptr);
  28   assert(reinterpret_cast<uintptr_t>(a2) % static_cast<uintptr_t>(kAlign) == 0);
  29   assert(__sanitizer_get_allocated_size(a2) >= 4);
  30   ::operator delete(a2, kAlign);
  31 #endif
  32 }