From e5bc83f5e7a6c5f48dc10e69fca377d1478fc4dc Mon Sep 17 00:00:00 2001
From: Shenglei Zhang <shenglei.zhang@intel.com>
Date: Feb 19 2019 08:15:15 +0000
Subject: MdePkg/BaseLib: Change a variable type in a bitwise operation


Change the type of variable Chr from CHAR8 to UINT32 in a
bitwise operation, to make the two variables in the operation
have the same size.
https://bugzilla.tianocore.org/show_bug.cgi?id=1527

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

---

diff --git a/MdePkg/Library/BaseLib/String.c b/MdePkg/Library/BaseLib/String.c
index 53ff730..a389115 100644
--- a/MdePkg/Library/BaseLib/String.c
+++ b/MdePkg/Library/BaseLib/String.c
@@ -2070,7 +2070,7 @@ Base64Decode (
       Chr = DecodingTable[(UINT8) Source[SourceIndex++]];
       } while (Chr == BAD_V);
       Value <<= 6;
-      Value |= Chr;
+      Value |= (UINT32)Chr;
     }
 
     //