test.cc

#include <boost/optional.hpp>

using namespace boost;

class C {
 public:
  C() :
    data_(initial_data_) {
  }

  ~C() {
    if (data_ != initial_data_) {
      delete[] data_;
    }
  }

  private:
   uint8_t initial_data_[4];
   uint8_t* data_;
};

void foo() {
  optional<C> x;
  for (int i = 0; i < 2; i++) {
    x.emplace();
    x.reset();
  }
}