[#ChainstateManager-UpdateUncommittedBlockStructures]
= xref:ChainstateManager.adoc[ChainstateManager]::UpdateUncommittedBlockStructures
:relfileprefix: ../
:mrdocs:

Update uncommitted block structures (currently: only the witness reserved value). This is safe for submitted blocks as long as they honor default_witness_commitment from the template.

== Synopsis

Declared in `<validation.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
UpdateUncommittedBlockStructures(
    xref:CBlock.adoc[CBlock]& block,
    xref:CBlockIndex.adoc[CBlockIndex] const* pindexPrev) const;
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *block*
| The block whose uncommitted structures are updated.
| *pindexPrev*
| Block index entry of the parent block.
|===


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