From bd5ef82698e5e5931ae46e763187a472ce76b661 Mon Sep 17 00:00:00 2001
From: Liming Gao <liming.gao@intel.com>
Date: Fri, 11 Nov 2016 11:30:13 +0800
Subject: [PATCH] MdePkg Base.h: Add add comments on __ prefix in enum
 VERIFY_UINTXX_ENUM_SIZE

Cc: Michael Kinney <michael.d.kinney@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
---
 MdePkg/Include/Base.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h
index 5e24b5d487..8f5b919faa 100644
--- a/MdePkg/Include/Base.h
+++ b/MdePkg/Include/Base.h
@@ -63,6 +63,13 @@ VERIFY_SIZE_OF (UINT64, 8);
 VERIFY_SIZE_OF (CHAR8, 1);
 VERIFY_SIZE_OF (CHAR16, 2);
 
+//
+// The following three enum types are used to verify that the compiler
+// configuration for enum types is compliant with Section 2.3.1 of the 
+// UEFI 2.3 Specification. These enum types and enum values are not 
+// intended to be used. A prefix of '__' is used avoid conflicts with
+// other types.
+//
 typedef enum {
   __VerifyUint8EnumValue = 0xff
 } __VERIFY_UINT8_ENUM_SIZE;