Johan Berg: Empty Objects

In this talk, we'll implement a simplified version of std::unique_ptr and answer some questions about empty objects along the way.
The event was kindly hosted at the Nexer office in Stockholm. nexergroup.com
Event page: www.meetup.com...
More information about Cpp Usergroups in Sweden at www.swedencpp.se

[@eugnsp]

These two approaches are not fully equivalent. A compiler is allowed to ignore [[no_unique_address]] and you could end up with a larger object than expected, whereas EBO is a mandatory optimization.

[@HaraldAchitz]

I think it is mentioned that the compiler can ignore attributes and that msvc does not care about the standard attribute but uses its own one with the msvc namespace [[msvc::no_unique_address]] or do you mean something different?

[@tourdesource]

Could the unique_ptr simply inherit from the deleter?

[@johanberg]

It could, but then you wouldn't be able to use it with deleters marked `final` or function pointers.

[@tourdesource]

@@johanberg Got it. Thanks for the presentation!