[#BloombergLP-bslstp-Util-copyContainerAllocator]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstp.adoc[bslstp]::xref:BloombergLP/bslstp/Util.adoc[Util]::copyContainerAllocator
:relfileprefix: ../../../
:mrdocs:

Return the allocator to use when copy‐constructing a container.

== Synopsis

Declared in `<bslstp_util.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class ALLOCATOR>
static
ALLOCATOR
copyContainerAllocator(ALLOCATOR const& rhsAlloc);
----

== Description

`rhsAlloc` is intended to be the allocator from the container being copied. If the `ALLOCATOR` type uses `bslma` allocator semantics, then ignore `rhsAlloc` and return the default allocator. Otherwise, return `rhsAlloc` unchanged.


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