add NULL pointer check.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7506 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 7 insertions, 1 deletions

diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
index f2e3121513..0d03376359 100644
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
@@ -3,7 +3,7 @@
   Implement all four UEFI Runtime Variable services for the nonvolatile

   and volatile storage space and install variable architecture protocol.

   

-Copyright (c) 2006 - 2008, Intel Corporation                                                         

+Copyright (c) 2006 - 2009, Intel Corporation                                                         

 All rights reserved. This program and the accompanying materials                          

 are licensed and made available under the terms and conditions of the BSD License         

 which accompanies this distribution.  The full text of the license may be found at        

@@ -765,7 +765,9 @@ UpdateVariableCache (
   UINTN                     Index;

 

   if (EfiAtRuntime ()) {

+    //

     // Don't use the cache at runtime

+    // 

     return;

   }

 

@@ -774,7 +776,9 @@ UpdateVariableCache (
       if (StrCmp (VariableName, Entry->Name) == 0) { 

         Entry->Attributes = Attributes;

         if (DataSize == 0) {

+          //

           // Delete Case

+          //

           if (Entry->DataSize != 0) {

             FreePool (Entry->Data);

           }

@@ -783,6 +787,8 @@ UpdateVariableCache (
           CopyMem (Entry->Data, Data, DataSize);

         } else {

           Entry->Data = AllocatePool (DataSize);

+          ASSERT (Entry->Data != NULL);

+

           Entry->DataSize = DataSize;

           CopyMem (Entry->Data, Data, DataSize);

         }