std::pmr::polymorphic_allocator::delete_object

#include <iostream>
#include <memory_resource>

int main() {
  //メモリ確保・解放処理を切り替え
  std::pmr::monotonic_buffer_resource mr{};
  std::pmr::polymorphic_allocator<> alloc{&mr};

  //int型の領域を確保しそこにオブジェクトを構築
  int* p1 = alloc.new_object<int>(20);
  //new式
  int* p2 = new int{17};


  std::cout << "address : " << p1 << "\n";
  std::cout << "address : " << p2 << "\n";

  std::cout << *p1 << "\n";
  std::cout << *p2 << "\n";


  //構築したオブジェクトを破棄し、確保したメモリ領域を解放
  alloc.delete_object(p1);
  //delete式
  delete p2;
}