Class DeallocatorChecker

test/functionality-test.cpp:11–27

Increases the linked counter once for every destruction

namespace {
/// Increases the linked counter once for every destruction
class DeallocatorChecker {
  std::shared_ptr<std::reference_wrapper<std::size_t>> checker_;

public:
  DeallocatorChecker(std::size_t& checker) {
    checker_ = std::shared_ptr<std::reference_wrapper<std::size_t>>(
        new std::reference_wrapper<std::size_t>(checker),
        [=](std::reference_wrapper<std::size_t>* ptr) {
          ++ptr->get();
          std::default_delete<std::reference_wrapper<std::size_t>>{}(ptr);
        });
  }

  std::size_t operator()() const {
    return checker_->get();
  }
};

struct VolatileProvider {
  bool operator()() volatile {