text: // Test basic new functionality.
  // RUN: %clangxx_hwasan -std=c++17 %s -o %t
  // RUN: %run %t
  
  #include <cassert>
  #include <cstdint>
  #include <cstdlib>
  #include <new>
  #include <sanitizer/allocator_interface.h>
  #include <sanitizer/hwasan_interface.h>
  
  int main() {
    __hwasan_enable_allocator_tagging();
  
    size_t volatile n = 0;
    char *a1 = new char[n];
    assert(a1 != nullptr);
    assert(__sanitizer_get_allocated_size(a1) == 0);
    delete[] a1;
  
  #if defined(__cpp_aligned_new) && (!defined(_GLIBCXX_RELEASE) || _GLIBCXX_RELEASE >= 7)
    // Aligned new/delete
    constexpr auto kAlign = std::align_val_t{8};
    void *a2 = ::operator new(4, kAlign);
    assert(a2 != nullptr);
    assert(reinterpret_cast<uintptr_t>(a2) % static_cast<uintptr_t>(kAlign) == 0);
    assert(__sanitizer_get_allocated_size(a2) >= 4);
    ::operator delete(a2, kAlign);
  #endif
  }
  