Daniel:
  I agree this fix. But, I don't meet with this failure with GCC on IA32/X64 
arch. So, I don't fix it early. Reviewed-by: Liming Gao <liming....@intel.com>

Thanks
Liming
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Daniel Schaefer
> Sent: Monday, March 2, 2020 6:33 PM
> To: devel@edk2.groups.io
> Cc: Abner Chang <abner.ch...@hpe.com>; Gilbert Chen <gilbert.c...@hpe.com>; 
> Leif Lindholm <l...@nuviainc.com>; Bi, Dandan
> <dandan...@intel.com>; Dong, Eric <eric.d...@intel.com>
> Subject: [edk2-devel] [PATCH v2 3/3] MdeModulePkg: Use CopyMem instead of 
> GUID assignment
> 
> GCC translates a simple assignment to memcpy, which EDKII doesn't provide.
> See: https://www.mail-archive.com/edk2-devel@lists.01.org/msg11928.html
> 
> REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2547
> 
> Signed-off-by: Daniel Schaefer <daniel.schae...@hpe.com>
> Cc: Abner Chang <abner.ch...@hpe.com>
> Cc: Gilbert Chen <gilbert.c...@hpe.com>
> Cc: Leif Lindholm <l...@nuviainc.com>
> Cc: Dandan Bi <dandan...@intel.com>
> Cc: Eric Dong <eric.d...@intel.com>
> ---
> 
> Notes:
>     v2:
>       - Use CopyMem instead of CopyGuid [Dandan]
> 
>  MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c
> b/MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c
> index 5cc527679a78..0540e6fa8a44 100644
> --- a/MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c
> +++ b/MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c
> @@ -619,7 +619,7 @@ CreateDeviceManagerForm(
>          TokenHelp = HiiSetString (HiiHandle, 0, String, NULL);
> 
> 
>          FreePool (String);
> 
> 
> 
> 
> 
> -        FormSetGuid = ((EFI_IFR_FORM_SET *)Ptr)->Guid;
> 
> 
> +        CopyMem (&FormSetGuid, &((EFI_IFR_FORM_SET *) Ptr)->Guid, sizeof 
> (EFI_GUID));
> 
> 
> 
> 
> 
>          //
> 
> 
>          // Network device process
> 
> 
> --
> 2.25.0
> 
> 
> 


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