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Asked: May 15, 20262026-05-15T19:56:49+00:00 2026-05-15T19:56:49+00:00

For example, in unique_ptr<Derived> = new deriv; std::vector<unique_ptr<Base>>.push_back(std::move(deriv)); will deriv be sliced to type

For example, in

unique_ptr<Derived> = new deriv;
std::vector<unique_ptr<Base>>.push_back(std::move(deriv));

will deriv be sliced to type unique_ptr<Base>?

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Editorial Team · Answer 1 · 2026-05-15T19:56:50+00:00

Editorial Team

No slicing will occur; the unique_ptr<Base> will own the pointer to the Derived object.

A unique_ptr to a derived class can be implicitly converted to a unique_ptr to a base class.