cpp / latest / memory / allocator / max_size.html /

std::allocator<T>::max_size

size_type max_size() const throw();
(until C++11)
size_type max_size() const noexcept;
(since C++11)
(deprecated in C++17)
(removed in C++20)

Returns the maximum theoretically possible value of n, for which the call allocate(n, 0) could succeed.

In most implementations, this returns std::numeric_limits<size_type>::max() / sizeof(value_type).

Parameters

(none).

Return value

The maximum supported allocation size.

See also

[static]
returns the maximum object size supported by the allocator
(public static member function of std::allocator_traits<Alloc>)

© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
https://en.cppreference.com/w/cpp/memory/allocator/max_size