MdePkg: Add a new macro VA_COPY for variable argument support. Fix a bug in the UefiLib instance that there is a non portable assumption that Marker is copied when passed to a function.
Signed-off-by: rsun3 Reviewed-by: mdkinney git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13025 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -742,8 +742,11 @@ CatVSPrint (
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UINTN CharactersRequired;
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UINTN SizeRequired;
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CHAR16 *BufferToReturn;
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VA_LIST ExtraMarker;
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CharactersRequired = SPrintLength(FormatString, Marker);
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VA_COPY (ExtraMarker, Marker);
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CharactersRequired = SPrintLength(FormatString, ExtraMarker);
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VA_END (ExtraMarker);
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if (String != NULL) {
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SizeRequired = StrSize(String) + (CharactersRequired * sizeof(CHAR16));
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