[#bsl-allocator-0a-max_size]
= xref:bsl.adoc[bsl]::xref:bsl/allocator-0a.adoc[allocator<void>]::max_size
:relfileprefix: ../../
:mrdocs:

Return the maximum number of elements allocatable by this allocator.

== Synopsis

Declared in `<bslma_bslallocator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:bsl/allocator-0df.adoc[size_type]
max_size() const;
----

== Description

Return the maximum number of elements of (template parameter) `TYPE` that can be allocated using this allocator in a single call to `allocate`. Note that there is no guarantee that attempts at allocating fewer elements than the value returned by `max_size` will not throw.

== Return Value

maximum number of elements allocatable by this allocator


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