cpp11demangle.cpp

#ifndef TYPE_HPP
#define TYPE_HPP

#include <string>
#include <typeinfo>

std::string demangle(const char* name);

template <class T>
std::string type(const T& t) {
  return demangle(typeid(t).name());
}

#endif

#ifdef __GNUG__
#include <cstdlib>
#include <memory>
#include <cxxabi.h>

std::string demangle(const char* name) {
  int status = -4;
  std::unique_ptr<char, void(*)(void*)> res {
    abi::__cxa_demangle(name,nullptr,nullptr,&status),
      std::free
      };
  return ( status == 0 ) ? res.get() : name;
}

#else

std::string demangle(const char* name) {
  return name;
}

#endif

#include <iostream>

struct Base { virtual ~Base() {}  };

struct Derived : public Base {};

int main() {
  Base* ptr_base = new Derived();
  std::cout << "Type of ptr_base : " << type(ptr_base) << std::endl;
  std::cout << "Type of pointee  : " << type(*ptr_base) << std::endl;
  delete ptr_base;
}

thanks! @hacker_news