NAME

std::auto_ptr::auto_ptr - std::auto_ptr::auto_ptr

Synopsis

explicit auto_ptr( X* p = 0 ) throw(); (1) (deprecated in C++11)
(removed in C++17)
auto_ptr( auto_ptr& r ) throw(); (2) (deprecated in C++11)
(removed in C++17)
template< class Y > (3) (deprecated in C++11)
auto_ptr( auto_ptr<Y>& r ) throw(); (removed in C++17)
auto_ptr( auto_ptr_ref<X> m ) throw(); (4) (deprecated in C++11)
(removed in C++17)

Constructs the auto_ptr from a pointer that refers to the object to manage.

1) Constructs the auto_ptr with pointer p.
2) Constructs the auto_ptr with the pointer held in r. r.release() is called to
acquire the ownership of the object.
3) Same as (2). Y* must be implicitly convertible to T*.
4) Constructs the auto_ptr with the pointer held in the auto_ptr instance referred
to by m. p.release() is called for the auto_ptr p that m holds to acquire the
ownership of the object.
auto_ptr_ref is an implementation-defined type that holds a reference to auto_ptr.
std::auto_ptr is implicitly convertible to and assignable from this type. The
implementation is allowed to provide the template with a different name or implement
equivalent functionality in other ways.

Parameters

p - a pointer to an object to manage
r - another auto_ptr to transfer the ownership of the object from
m - an implementation-defined type that holds a reference to auto_ptr

Notes

The constructor and the copy assignment operator from auto_ptr_ref is provided to
allow copy-constructing and assigning std::auto_ptr from nameless temporaries. Since
its copy constructor and copy assignment operator take the argument as non-const
reference, they cannot bind rvalue arguments directly. However, a user-defined
conversion can be executed (which releases the original auto_ptr), followed by a
call to the constructor or copy-assignment operator that take auto_ptr_ref by value.
This is an early implementation of move semantics.