std::allocator<T>::construct

< cpp‎ | memory‎ | allocator
 
C++
 
Dynamic memory management
Uninitialized storage
(C++17)
(until C++20)
(until C++20)
(until C++20)
Garbage collection support
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
Miscellaneous
(C++11)
(C++20)
(C++11)
(C++11)
(C++20)
C Library
Low level memory management
 
std::allocator
Member functions
(until C++20)
(until C++20)
allocator::construct
(until C++20)
(until C++20)
Non-member functions
 
Defined in header <memory>
void construct( pointer p, const_reference val );
 (1) (until C++11)
template< class U, class... Args >
void construct( U* p, Args&&... args );
 (2) (since C++11)
(deprecated in C++17)
(removed in C++20)

Constructs an object of type T in allocated uninitialized storage pointed to by p, using placement-new

1) Calls new((void *)p) T(val)
2) Calls ::new((void *)p) U(std::forward<Args>(args)...)

Parameters

p - pointer to allocated uninitialized storage
val - the value to use as the copy constructor argument
args... - the constructor arguments to use

Return value

(none)

See also

[static]
 constructs an object in the allocated storage
(function template)
allocation functions
(function)