From 3e9442a564a767f7bd60113117d7b993a4e29a9b Mon Sep 17 00:00:00 2001
From: Ruiyu Ni <ruiyu.ni@intel.com>
Date: Tue, 12 Jul 2016 18:13:41 +0800
Subject: ShellPkg/Edit: Handle memory allocation failure

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
---
 .../UefiShellDebug1CommandsLib/Edit/FileBuffer.c   | 41 +++++++++++-----------
 1 file changed, 20 insertions(+), 21 deletions(-)

diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c b/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c
index acd8512ff3..efe0df0253 100644
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c
@@ -1,7 +1,7 @@
 /** @file
   Implements filebuffer interface functions.
 
-  Copyright (c) 2005 - 2015, Intel Corporation. All rights reserved. <BR>
+  Copyright (c) 2005 - 2016, Intel Corporation. All rights reserved. <BR>
   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
@@ -505,29 +505,28 @@ FileBufferPrintLine (
 
   BufLen = (MainEditor.ScreenSize.Column + 1) * sizeof (CHAR16);
   PrintLine = AllocatePool (BufLen);
-  ASSERT (PrintLine != NULL);
-
-  StrnCpyS (PrintLine, BufLen/sizeof(CHAR16), Buffer, MIN(Limit, MainEditor.ScreenSize.Column));
-  for (; Limit < MainEditor.ScreenSize.Column; Limit++) {
-    PrintLine[Limit] = L' ';
-  }
-
-  PrintLine[MainEditor.ScreenSize.Column] = CHAR_NULL;
-
-  PrintLine2 = AllocatePool (BufLen * 2);
-  ASSERT (PrintLine2 != NULL);
+  if (PrintLine != NULL) {
+    StrnCpyS (PrintLine, BufLen/sizeof(CHAR16), Buffer, MIN(Limit, MainEditor.ScreenSize.Column));
+    for (; Limit < MainEditor.ScreenSize.Column; Limit++) {
+      PrintLine[Limit] = L' ';
+    }
 
-  ShellCopySearchAndReplace(PrintLine, PrintLine2, BufLen * 2, L"%", L"^%", FALSE, FALSE);
+    PrintLine[MainEditor.ScreenSize.Column] = CHAR_NULL;
 
-  ShellPrintEx (
-    0,
-    (INT32)Row - 1,
-    L"%s",
-    PrintLine2
-    );
+    PrintLine2 = AllocatePool (BufLen * 2);
+    if (PrintLine2 != NULL) {
+      ShellCopySearchAndReplace(PrintLine, PrintLine2, BufLen * 2, L"%", L"^%", FALSE, FALSE);
 
-  FreePool (PrintLine);
-  FreePool (PrintLine2);
+      ShellPrintEx (
+        0,
+        (INT32)Row - 1,
+        L"%s",
+        PrintLine2
+        );
+      FreePool (PrintLine2);
+    }
+    FreePool (PrintLine);
+  }
 
   return EFI_SUCCESS;
 }
-- 
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