[#BloombergLP-bdlb-Variant4-2constructor-09f7]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlb.adoc[bdlb]::xref:BloombergLP/bdlb/Variant4.adoc[Variant4]::Variant4
:relfileprefix: ../../../
:mrdocs:

Create a variant object in the unset state that uses the currently installed default allocator to supply memory.

== Synopsis

Declared in `<bdlb_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
Variant4();
----


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