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Well, you still need (placement) new for the implementation of the smart pointers themselves. You would also use it (or malloc) to implement custom allocators, for example: https://www.boost.org/d...
Answer
#1: Initial revision
by
Dirk Herrmann
·
2022-08-22T07:33:23Z (over 2 years ago)
Well, you still need (placement) `new` for the implementation of the smart pointers themselves. You would also use it (or malloc) to implement custom allocators, for example: https://www.boost.org/doc/libs/1_78_0/libs/pool/doc/html/boost/default_user_allocator_new_delete.html. One unusual scenario is the following: Just recently I was involved in the implementation of a component that had a special requirement, namely that some of its objects should have "infinite" life time. These objects should therefore also not be destroyed at the end of `main`, but exist up to the point of actual process termination. Therefore, what was needed there was a `new` without `delete`. Maybe others have more examples - at least I can confirm your view that the use of `new` has almost completely disappeared from source code.