Well, this article was written using a phone, so it might be possible to read it using one :P And yes, it's completely true for cases that your custom deleter

Well, this article was written using a phone, so it might be possible to read it using one :P And yes, it's completely true for cases that your custom deleter (pay attention that there is no custom allocator in std::unique_ptr, but it also true to allocators in other structures) doesn't contain any data members :) And thanks!