MdePkg: Reinitialize twice-iterated VA_LIST in variadic function UefiDevicePathLibCatPrint()

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Zenith432 <zenith432@users.sourceforge.net>
Reviewed-by: Liming Gao <liming.gao@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/MdePkg/Library/UefiDevicePathLib/DevicePathToText.c b/MdePkg/Library/UefiDevicePathLib/DevicePathToText.c
index 92db3b1d84..5922deeea8 100644
--- a/MdePkg/Library/UefiDevicePathLib/DevicePathToText.c
+++ b/MdePkg/Library/UefiDevicePathLib/DevicePathToText.c
@@ -42,6 +42,7 @@ UefiDevicePathLibCatPrint (
 

   VA_START (Args, Fmt);

   Count = SPrintLength (Fmt, Args);

+  VA_END(Args);

 

   if ((Str->Count + (Count + 1)) * sizeof (CHAR16) > Str->Capacity) {

     Str->Capacity = (Str->Count + (Count + 1) * 2) * sizeof (CHAR16);

@@ -52,6 +53,7 @@ UefiDevicePathLibCatPrint (
                  );

     ASSERT (Str->Str != NULL);

   }

+  VA_START (Args, Fmt);

   UnicodeVSPrint (&Str->Str[Str->Count], Str->Capacity - Str->Count * sizeof (CHAR16), Fmt, Args);

   Str->Count += Count;