[#bsl-make_optional-01]
= xref:bsl.adoc[bsl]::make_optional
:relfileprefix: ../
:mrdocs:

Return an `optional` object containing a value‐initialized `t_TYPE` object. If `t_TYPE` uses an allocator, the default allocator will be used for the `optional` object. This function can be called in constant expressions only if `t_TYPE` is not allocator‐aware.

== Synopsis

Declared in `<bslstl_optional.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_TYPE>
constexpr
xref:bsl/optional-072.adoc[bsl::optional<t_TYPE>]
make_optional();
----


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