OvmfPkg/XenBusDxe: duplicate twice-iterated VA_LIST in XenStoreVSPrint()

[mirror_edk2.git] / OvmfPkg / XenBusDxe / XenStore.c

diff --git a/OvmfPkg/XenBusDxe/XenStore.c b/OvmfPkg/XenBusDxe/XenStore.c
index 61976f91f11b7f7b4024a93dd81f7c3405081eb1..5757e78b18016a0bc321866857137d7cfb1bd87d 100644 (file)
--- a/OvmfPkg/XenBusDxe/XenStore.c
+++ b/OvmfPkg/XenBusDxe/XenStore.c
@@ -1319,8 +1319,11 @@ XenStoreVSPrint (
   CHAR8 *Buf;\r
   XENSTORE_STATUS Status;\r
   UINTN BufSize;\r
+  VA_LIST Marker2;\r
 \r
-  BufSize = SPrintLengthAsciiFormat (FormatString, Marker) + 1;\r
+  VA_COPY (Marker2, Marker);\r
+  BufSize = SPrintLengthAsciiFormat (FormatString, Marker2) + 1;\r
+  VA_END (Marker2);\r
   Buf = AllocateZeroPool (BufSize);\r
   AsciiVSPrint (Buf, BufSize, FormatString, Marker);\r
   Status = XenStoreWrite (Transaction, DirectoryPath, Node, Buf);\r