[#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(0x7fb95cc62ce8), guarded_by(0x7fb97da0e808), guarded_by(0x7fb969040cf8), guarded_by(0x7fb96e677548), guarded_by(0x7fb96bda8fa8), guarded_by(0x7fb96a98f088), guarded_by(0x7fb97e605c68), guarded_by(0x7fb96f3e5288), guarded_by(0x7fb958b0ac28), guarded_by(0x7fb98541f708), guarded_by(0x7fb9645575d8)]]
unsigned int nUndoPos = {0};
----


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