This commit will resolve the issue brought by r17735.

StrCatS (StrPercent, sizeof (StrPercent) / sizeof (CHAR16), TmpStr);

The above using of StrCatS will cause ASSERT if TmpStr is longer than
StrPercent. Therefore, StrnCatS is used here to resolve the issue.

Similar scenario is for:
StrCatS (StrTotalMemory, StrTotalMemorySize / sizeof (CHAR16), TmpStr);

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a...@intel.com>
Reviewed-by: Qiu Shumin <shumin....@intel.com>
Reviewed-by: Jeff Fan <jeff....@intel.com>
---
 IntelFrameworkModulePkg/Universal/BdsDxe/MemoryTest.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/IntelFrameworkModulePkg/Universal/BdsDxe/MemoryTest.c 
b/IntelFrameworkModulePkg/Universal/BdsDxe/MemoryTest.c
index eef840b..fedb151 100644
--- a/IntelFrameworkModulePkg/Universal/BdsDxe/MemoryTest.c
+++ b/IntelFrameworkModulePkg/Universal/BdsDxe/MemoryTest.c
@@ -324,7 +324,12 @@ BdsMemoryTest (
           //
           // TmpStr size is 64, StrPercent is reserved to 16.
           //
-          StrCatS (StrPercent, sizeof (StrPercent) / sizeof (CHAR16), TmpStr);
+          StrnCatS (
+            StrPercent,
+            sizeof (StrPercent) / sizeof (CHAR16), 
+            TmpStr,
+            sizeof (StrPercent) / sizeof (CHAR16) - StrLen (StrPercent) - 1
+            );
           PrintXY (10, 10, NULL, NULL, StrPercent);
           FreePool (TmpStr);
         }
@@ -389,7 +394,12 @@ Done:
 
     TmpStr = GetStringById (STRING_TOKEN (STR_MEM_TEST_COMPLETED));
     if (TmpStr != NULL) {
-      StrCatS (StrTotalMemory, StrTotalMemorySize / sizeof (CHAR16), TmpStr);
+      StrnCatS (
+        StrTotalMemory,
+        StrTotalMemorySize / sizeof (CHAR16),
+        TmpStr,
+        StrTotalMemorySize / sizeof (CHAR16) - StrLen (StrTotalMemory) - 1
+        );
       FreePool (TmpStr);
     }
 
-- 
1.9.5.msysgit.0


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