std::pmr::polymorphic_allocator<T>::allocate_object
template< class U >
[[nodiscard]] U* allocate_object( std::size_t n = 1 );
Allocates storage for n objects of type U using the underlying memory resource.
If std::numeric_limits<std::size_t>::max() / sizeof(U) < n, throws std::bad_array_new_length,
otherwise equivalent to return static_cast<U*>(allocate_bytes(n * sizeof(U), alignof(U)) );
Parameters
n - the number of objects to allocate storage for
Return value
A pointer to the allocated storage.
Notes
This function was introduced for use with the fully-specialized allocator std::pmr::polymorphic_allocator<>,
but it may be useful in any specialization as a shortcut to avoid having to rebind from std::pmr::polymorphic_allocator<T>
to std::pmr::polymorphic_allocator<U>.
Since U is not deduced, it must be provided as a template argument when calling this function.
Exceptions
Throws std::bad_array_new_length
if n > std::numeric_limits<std::size_t>::max() / sizeof(U);
may also be any exceptions thrown by the call to resource()->allocate.