[#BloombergLP-bslstl-BidirectionalNodePool-allocator-04]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/BidirectionalNodePool.adoc[BidirectionalNodePool]::allocator
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Return a reference providing modifiable access to the allocator supplying memory for the memory pool maintained by this object&period; The behavior is undefined if the allocator used by this object is changed with this method&period; Note that this method provides modifiable access to enable a client to call non&hyphen;`const` methods on the allocator&period;

== Synopsis

Declared in `&lt;bslstl&lowbar;bidirectionalnodepool&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
SimplePool&lt;bslalg::BidirectionalNode&lt;VALUE&gt;, ALLOCATOR&gt;::AllocatorType&
allocator();
----


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