On Sep 30, 2014, at 5:13 AM, Sergey Isakov <[email protected]> wrote:
> Hi sirs,
> New problem
> ------------
> Building ...
> /Users/sergey/src/edk2/MdeModulePkg/Universal/Acpi/S3SaveStateDxe/S3SaveStateDxe.inf
> [X64]
> /Users/sergey/src/edk2/MdeModulePkg/Universal/Acpi/S3SaveStateDxe/S3SaveState.c:216:33:
> error: second argument to 'va_arg' is of promotable type 'UINT16' (aka
> 'unsigned short'); this va_arg has undefined behavior because arguments will
> be promoted to 'int' [-Werror]
> Segment = VA_ARG (Marker, UINT16);
> ~~~~~~~~~~~~~~~~^~~~~~~
> /Users/sergey/src/edk2/MdePkg/Include/Base.h:488:150: note: expanded from
> macro 'VA_ARG'
> #define VA_ARG(Marker, TYPE) ((sizeof (TYPE) < sizeof (UINTN)) ?
> (TYPE)(__builtin_va_arg (Marker, UINTN)) : (TYPE)(__builtin_va_arg (Marker,
> TYPE)))
>
> ^
Sergey,
What version of clang are you using? Can you try a newer version?
This is a diagnostic error in clang that has been fixed. The macro ensures the
promotion to ‘int’ so it should not warn.
You can change UINT16 in VA_ARG() to UINTN as a temp work around.
Thanks,
Andrew Fish
>
> ------------
> The same in lines 244, 276 and 504.
> Please consider.
>
> Wishes,
> Sergey
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