[#BloombergLP-bslalg-ScalarPrimitives-defaultConstruct-012]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslalg.adoc[bslalg]::xref:BloombergLP/bslalg/ScalarPrimitives.adoc[ScalarPrimitives]::defaultConstruct
:relfileprefix: ../../../
:mrdocs:

Build a default‐initialized object of the parameterized `TARGET_TYPE` in the uninitialized memory at the specified `address`, as if by using the `TARGET_TYPE` default constructor. If the specified `allocator` is based on `bslma::Allocator` and `TARGET_TYPE` takes an allocator constructor argument, then `allocator` is passed to the default constructor. If the constructor throws, the `address` is left in an uninitialized state. Note that this operation may bypass the constructor and simply fill memory with 0 if `TARGET_TYPE` has the trivial default constructor trait and does not use `bslma::Allocator`.

== Synopsis

Declared in `<bslalg_scalarprimitives.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TARGET_TYPE>
static
void
defaultConstruct(
    TARGET_TYPE* address,
    xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* allocator);
----


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