[#llvm-cas-MappedFileRegionArena-RegionT]
= xref:llvm.adoc[llvm]::xref:llvm/cas.adoc[cas]::xref:llvm/cas/MappedFileRegionArena.adoc[MappedFileRegionArena]::RegionT
:relfileprefix: ../../../
:mrdocs:

Memory‐mapped file region type used for on‐disk storage.

== Synopsis

Declared in `<llvm/CAS/MappedFileRegionArena.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
using RegionT = xref:llvm/sys/fs/mapped_file_region.adoc[sys::fs::mapped_file_region];
----


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