[#BloombergLP-bslstl-SharedPtrUtil-dynamicCast-0f]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/SharedPtrUtil.adoc[SharedPtrUtil]::dynamicCast
:relfileprefix: ../../../
:mrdocs:

Return a `bsl::shared_ptr<TARGET>` object sharing ownership of the same object as the specified `source` shared pointer to the (template parameter) `SOURCE` type, and referring to `dynamic_cast<TARGET *>(source.get())`. If that would return a shared pointer referring to nothing (`0 == get()`), then instead return an (empty) default constructed shared pointer. Note that a compiler diagnostic will be emitted indicating an error unless `dynamic_cast<TARGET *>(source.get())` is a valid expression..

== Synopsis

Declared in `<bslstl_sharedptr.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class TARGET,
    class SOURCE>
static
xref:bsl/shared_ptr-0a.adoc[bsl::shared_ptr<TARGET>]
dynamicCast(xref:bsl/shared_ptr-0a.adoc[bsl::shared_ptr<SOURCE>] const& source) noexcept;
----


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