std::allocator::construct (3) Linux Manual Page

std::allocator<T>::construct – std::allocator<T>::construct

Synopsis

Defined in header <memory>
void construct( pointer p, const_reference val ); (1) (until C++11)
template< class U, class… Args > (since C++11)
void construct( U* p, Args&&… args ); (2) (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

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