check memory allocations for success.

check pointer before access. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11503 6f19259b-4bc3-4df7-8a09-765794883524
2011-04-04 21:41:24 +00:00
parent 4aa4377fda
commit cbdd109b43
5 changed files with 48 additions and 33 deletions
--- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c
+++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/FileBuffer.c
@ -2760,7 +2760,7 @@ FileBufferMovePosition (
      //
      FileBuffer.FilePosition.Column = NewFilePosCol;
      if (ColGap < 0) {
-        Abs = -ColGap;
+        Abs = (UINTN)(-ColGap);
        FileBuffer.DisplayPosition.Column -= Abs;
      } else {
        FileBuffer.DisplayPosition.Column += ColGap;