[#bsl-allocator-0a-2constructor-017]
= xref:bsl.adoc[bsl]::xref:bsl/allocator-0a.adoc[allocator<void>]::allocator
:relfileprefix: ../../
:mrdocs:

Create an allocator that copies `original`.

== Synopsis

Declared in `<bslma_bslallocator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
allocator(xref:bsl/allocator-0a.adoc[allocator<void>] const& original) noexcept = default;
----

== Description

Create a proxy object sharing the same mechanism object as the specified `original`. The newly constructed allocator will compare equal to `original`, even though they may be instantiated on different types. Postcondition: ` this‐>mechanism() == original.mechanism(); `

== Parameters

[cols="1,4"]
|===
| Name| Description
| *original*
| allocator whose mechanism is shared
|===


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