[#bsl-shared_ptr-0a-2constructor-02]
= xref:bsl.adoc[bsl]::xref:bsl/shared_ptr-0a.adoc[shared_ptr]::shared_ptr
:relfileprefix: ../../
:mrdocs:

Create an empty shared pointer. The specified `nullPointerLiteral` and `basicAllocator` are not used. Note that use of this constructor is equivalent to calling the default constructor.

== Synopsis

Declared in `<bslstl_sharedptr.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
shared_ptr(
    xref:bsl/nullptr_t-08.adoc[nullptr_t] nullPointerLiteral,
    xref:BloombergLP/bslma/Allocator.adoc[BloombergLP::bslma::Allocator]* basicAllocator);
----


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