demangle C++ TypeID names (std::unique_ptr version)

declname.cpp

#include <cxxabi.h> // gcc and clang…
#include <stdlib.h>


auto demangle(std::string&& name) -> std::unique_ptr<char, void(*)(char *)>
{
	int status = 0;
	return { abi::__cxa_demangle(name.c_str(), nullptr, nullptr, &status), [] (char * p) { ::free(p); } };
}

declname.hpp

#include <memory>


auto demangle(std::string&& name) -> std::unique_ptr<char, void(*)(char *)>;

template <typename T>
auto declname() { return demangle(typeid(std::declval<T>()).name()); }