If your code compiles, then you've used a complete type everywhere you need to. And most importantly, when it is necessary to have a complete type, you get a compile-time error if you try to use the smart pointer with an incomplete type at that point. Use of one of these smart pointers will let you get away with an incomplete type, except where it is necessary to have a complete type. Nevertheless, using incomplete classes in certain places is very useful! This is where shared_ptr and unique_ptr help. You still get the same undefined behavior as if you had used a raw pointer. Using auto_ptr in the above example doesn't help. However a more probable outcome is that your program will silently leak memory as ~A() won't be called. If you're very lucky your program will crash. When it executes, bad things will probably happen. Your compiler may or may not emit a warning for above code like the above.

Undefined behavior can occur when you have an incomplete type and you call delete on it: class A The motivation for this is to support idioms such as pimpl using smart pointers, and without risking undefined behavior. Some, but not all of their members can be instantiated with incomplete types. However shared_ptr and unique_ptr are partial exceptions. We know your success is our success so we make sure ourĬlients get the best available and approved candidates South Africa has to offer from our very own 'Unique Personnel' database of over 500 000 candidates that trust us with their CVs and careers.Most templates in the C++ standard library require that they be instantiated with complete types. We strive toĪlign the right people to your business so that these human resources can realize your company's goals. Unique Personnel provides a total recruitment solution in human resource management and personnel placements. Positioned mainly in the Financial and Commercial sector, you can rest assured that our highly effective PermanentĪnd Temporary Employment Divisions will provide you with top calibre financial personnel and corporate staff. Referenced and interviewed all of our top candidates in South Africa alone. We pride ourselves as a service-driven, total recruitment staffing solutionįor all our clients and job seeking candidates. As one of the Top Recruitment Agencies in the country we now recruit for more than 10000 clients. Has been providing South African Staffing Solutions, Of personnel recruitment experience and staffing solution, so it's not surprising that even though our main focus Unique Personnel (established in 1970) boasts over 50 years Unique Personnel Recruitment Agency now also recruiting in Africa. Recruitment Services aimed at finding the highest calibre Financial and Commercial personnel in South Africa.

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