text: /* **********************************************************
   * Copyright (c) 2020 Google, Inc.  All rights reserved.
   * **********************************************************/
  
  /*
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * * Redistributions of source code must retain the above copyright notice,
   *   this list of conditions and the following disclaimer.
   *
   * * Redistributions in binary form must reproduce the above copyright notice,
   *   this list of conditions and the following disclaimer in the documentation
   *   and/or other materials provided with the distribution.
   *
   * * Neither the name of Google, Inc. nor the names of its contributors may be
   *   used to endorse or promote products derived from this software without
   *   specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL VMWARE, INC. OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
   * DAMAGE.
   */
  
  #include "tools.h"
  #include <new>
  #include <stdio.h>
  
  static void
  test_operators()
  {
      const int iters = 99;
      for (int i = 0; i < iters; ++i) {
          // Invoke all of the global operator news and deletes.
          // We do not call destructors for our explicit operator calls: we are
          // not allocating anything that needs it.
  
          // void *operator new(std::size_t count);
          int *int_ptr = new int;
          // void operator delete(void *ptr) noexcept;
          delete int_ptr;
  
          // void *operator new[](std::size_t count);
          // We use a different variable to avoid false positives in clang's check
          // for new..delete[].
          int *int_arr = new int[42];
          // void operator delete[](void *ptr) noexcept;
          delete[] int_arr;
  
          // void *operator new(std::size_t count, const std::nothrow_t &tag);
          int_ptr = new (std::nothrow) int;
          // void operator delete(void *ptr, const std::nothrow_t &tag) noexcept;
          ::operator delete(int_ptr, std::nothrow);
          // void *operator new[](std::size_t count, const std::nothrow_t &tag);
          int_arr = new (std::nothrow) int[42];
          // void operator delete[](void *ptr, const std::nothrow_t &tag) noexcept;
          ::operator delete[](int_arr, std::nothrow);
  
  #if defined(__cpp_aligned_new)
          // void *operator new(std::size_t count, std::align_val_t al);
          class alignas(64) align64 {
          public: // Public to avoid warnings about unused field.
              int x = 0;
          };
          auto *aligned_class = new align64;
          int *aligned_int = new (std::align_val_t{ 64 }) int;
          // void operator delete(void *ptr, std::align_val_t al) noexcept;
          delete aligned_class;
          // Some compilers (MSVC) will complain with just "delete".
          ::operator delete (aligned_int, std::align_val_t{ 64 });
  
          // void *operator new[](std::size_t count, std::align_val_t al);
          auto *class_array = new align64[4];
          int *aligned_arr = new (std::align_val_t{ 64 }) int[42];
          // void operator delete[](void *ptr, std::align_val_t al) noexcept;
          delete[] class_array;
          // Some compilers (MSVC) will complain with just "delete[]".
          ::operator delete[](aligned_arr, std::align_val_t{ 64 });
  
          // void *operator new(std::size_t count, std::align_val_t al,
          //                    const std::nothrow_t &);
          aligned_class = new (std::nothrow) align64;
          aligned_int = new (std::align_val_t{ 64 }, std::nothrow) int;
          // void operator delete(void *ptr, std::align_val_t al,
          //                      const std::nothrow_t &tag) noexcept;
          ::operator delete(aligned_class, std::nothrow);
          ::operator delete (aligned_int, std::align_val_t{ 64 }, std::nothrow);
          // void *operator new[](std::size_t count, std::align_val_t al,
          //                     const std::nothrow_t &);
          class_array = new (std::nothrow) align64[4];
          aligned_arr = new (std::align_val_t{ 64 }, std::nothrow) int[42];
          // void operator delete[](void *ptr, std::align_val_t al,
          //                        const std::nothrow_t &tag) noexcept;
          ::operator delete[](class_array, std::nothrow);
          ::operator delete[](aligned_arr, std::align_val_t{ 64 }, std::nothrow);
  #endif
  #if defined(__cpp_sized_deallocation)
          // void operator delete(void *ptr, std::size_t sz) noexcept;
          int_ptr = new int;
          ::operator delete(int_ptr, sizeof(*int_ptr));
          // void operator delete[](void *ptr, std::size_t sz) noexcept;
          int_arr = new int[42];
          ::operator delete(int_arr, 42 * sizeof(*int_arr));
  #endif
  #if defined(__cpp_aligned_new) && defined(__cpp_sized_deallocation)
          aligned_class = new align64;
          aligned_int = new (std::align_val_t{ 64 }) int;
          // void operator delete(void *ptr, std::size_t sz, std::align_val_t al) noexcept;
          ::operator delete (aligned_class, sizeof(*aligned_class),
                             std::align_val_t{ alignof(*aligned_class) });
          ::operator delete (aligned_int, sizeof(*aligned_int), std::align_val_t{ 64 });
  
          class_array = new align64[4];
          aligned_arr = new (std::align_val_t{ 64 }) int[42];
          // void operator delete[](void *ptr, std::size_t sz, std::align_val_t al)
          // noexcept;
          ::operator delete[](class_array, 4 * sizeof(*class_array),
                              std::align_val_t{ alignof(*class_array) });
          ::operator delete[](aligned_arr, 42 * sizeof(*aligned_arr),
                              std::align_val_t{ 64 });
  #endif
          // void *operator new(std::size_t count, void *ptr);
          void *buf = malloc(sizeof(*int_ptr));
          int_ptr = new (buf) int;
          // void operator delete(void *ptr, void *place) noexcept;
          ::operator delete(int_ptr, buf);
          free(buf);
  
          // void *operator new[](std::size_t count, void *ptr);
          buf = malloc(42 * sizeof(*int_arr));
          int_arr = new (buf) int[42];
          // void operator delete[](void *ptr, void *place) noexcept;
          ::operator delete[](int_arr, buf);
          free(buf);
      }
  }
  
  int
  main()
  {
      test_operators();
      print("All done.\n");
      return 0;
  }
  