ShellPkg: Add checking for memory allocation and pointer returns from functions.

signed-off-by: jcarsey
reviewed-by: lgrosenb

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12542 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 6 insertions, 2 deletions

diff --git a/ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c b/ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c
index b153d2fe45..69193d5efa 100644
--- a/ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c
+++ b/ShellPkg/Library/UefiShellLevel2CommandsLib/UefiShellLevel2CommandsLib.c
@@ -163,8 +163,8 @@ ShellLevel2CommandsLibDestructor (
   @param[in] Path         The unknown Path Value

 

   @retval NULL            A memory allocation failed

-  @retval NULL            a fully qualified path could not be discovered.

-  @retval other           pointer to a fuly qualified path.

+  @retval NULL            A fully qualified path could not be discovered.

+  @retval other           An allocated pointer to a fuly qualified path.

 **/

 CHAR16*

 EFIAPI

@@ -194,6 +194,10 @@ GetFullyQualifiedPath(
 

   PathCleanUpDirectories(PathToReturn);

 

+  if (PathTpReturn == NULL) {

+    return NULL;

+  }

+

   while (PathToReturn[StrLen(PathToReturn)-1] == L'*') {

     PathToReturn[StrLen(PathToReturn)-1] = CHAR_NULL;

   }