# std::allocator<T>::max_size

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< cpp‎ | memory‎ | allocator

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

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

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