[#CBlockIndex-nUndoPos]
= xref:CBlockIndex.adoc[CBlockIndex]::nUndoPos
:relfileprefix: ../
:mrdocs:

Byte offset within rev?????.dat where this block's undo data is stored

== Synopsis

Declared in `<chain.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[guarded_by(0x7f9500cbe0b8), guarded_by(0x7f95119056f8), guarded_by(0x7f951ec49978), guarded_by(0x7f9524d79a78), guarded_by(0x7f9503ca0348), guarded_by(0x7f9516ce9a18), guarded_by(0x7f9520d77cd8), guarded_by(0x7f9524d44578), guarded_by(0x7f9517141948), guarded_by(0x7f9516bbe3e8), guarded_by(0x7f94f3859298)]]
unsigned int nUndoPos = {0};
----


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