[#bsl-variant-2constructor-07b]
= xref:bsl.adoc[bsl]::xref:bsl/variant.adoc[variant]::variant
:relfileprefix: ../../
:mrdocs:

Create a `variant` object holding the same alternative (if any) held by the specified `original`. If this `variant` is allocator‐aware, the specified `allocator` is used to supply memory. If `original` is not valueless by exception, the contained value is copy/move‐constructed from the contained value of `original`. This constructor participates in overload resolution only if all alternatives are copy/move‐constructible.

== Synopsis

Declared in `<bslstl_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_STD_VARIANT>
explicit
variant(
    std::allocator_arg_t,
    xref:bsl/variant/allocator_type.adoc[allocator_type] allocator,
    t_STD_VARIANT&& original);
----


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