19 General utilities library [utilities]

19.11 Smart pointers [smartptr]

19.11.1 Class template unique_ptr [unique.ptr]

19.11.1.3 unique_ptr for array objects with a runtime length [unique.ptr.runtime]

19.11.1.3.4 Modifiers [unique.ptr.runtime.modifiers]

void reset(nullptr_t p = nullptr) noexcept;

Effects: Equivalent to reset(pointer()).

template<class U> void reset(U p) noexcept;

This function behaves the same as the reset member of the primary template, except that it shall not participate in overload resolution unless either

(2.1)
U is the same type as pointer, or
(2.2)
pointer is the same type as element_type*, U is a pointer type V*, and V(*)[] is convertible to element_type(*)[].