[#BloombergLP-bslma-MallocFreeAllocator-deallocate-0c]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslma.adoc[bslma]::xref:BloombergLP/bslma/MallocFreeAllocator.adoc[MallocFreeAllocator]::deallocate
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:mrdocs:

Return the memory block at the specified `address` back to this allocator. If `address` is 0, this function has no effect. The behavior is undefined unless `address` was allocated using this allocator object and has not already been deallocated. Note that `std::free` is _not_ called when `address` is 0 (in order to avoid having to acquire a lock, and potential contention in multi‐treaded programs).

== Synopsis

Declared in `<bslma_mallocfreeallocator.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
virtual
void
deallocate(void* address) override;
----


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