It would; you'd just have to supply a custom "free_deleter" in the definition of the unique_ptr that calls free instead of delete. I've used this for Windows Sy

It would; you'd just have to supply a custom "free_deleter" in the definition of the unique_ptr that calls free instead of delete. I've used this for Windows System calls like GetAddrInfoExW which requires calling FreeAddrInfoEx when you're done. std::unique_ptr<ADDRINFOEXW, addrinfo_deleter> holder; ADDRINFOEXW hint = { .ai_family = AF_UNSPEC }; if (const auto result = GetAddrInfoExW( sHost , nullptr , NS_ALL , nullptr , &hint , std::out_ptr(holder) , nullptr , nullptr , nullptr , nullptr); result != ERROR_SUCCESS) { // print error here }