[#BloombergLP-bslma-TestAllocator-setFillPattern]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslma.adoc[bslma]::xref:BloombergLP/bslma/TestAllocator.adoc[TestAllocator]::setFillPattern
:relfileprefix: ../../../
:mrdocs:

Set the fill pattern for newly allocated memory to `pattern`.

== Synopsis

Declared in `<bslma_testallocator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
setFillPattern(xref:BloombergLP/bsls/Types/Uint64.adoc[bsls::Types::Uint64] pattern);
----

== Description

Set the fill pattern for this test allocator to the specified 64‐bit `pattern`. Newly allocated memory will be filled with the specified pattern value. Note that the fill pattern, if set, is applied to the entire user segment of allocated memory blocks.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *pattern*
| The 64‐bit pattern used to fill newly allocated memory.
|===


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