[#interfaces-BlockInfo-undo_data]
= xref:interfaces.adoc[interfaces]::xref:interfaces/BlockInfo.adoc[BlockInfo]::undo&lowbar;data
:relfileprefix: ../../
:mrdocs:

Pointer to the block undo data, or null when not loaded&period;

== Synopsis

Declared in `&lt;kernel&sol;chain&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:CBlockUndo.adoc[CBlockUndo] const* undo&lowbar;data = nullptr;
----


[.small]#Created with https://www.mrdocs.com[MrDocs]#
