Hi Yi,

Could you describe the bug with an example? In which scenario the dsc defined 
pcd will not override the dec definition? 

Thanks,
Christine
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of yi1 li
> Sent: Monday, July 11, 2022 1:48 PM
> To: devel@edk2.groups.io
> Cc: Li, Yi1 <yi1...@intel.com>; Feng, Bob C <bob.c.f...@intel.com>; Gao,
> Liming <gaolim...@byosoft.com.cn>
> Subject: [edk2-devel] [PATCH 1/1] BaseTools: INF should use latest Pcd value
> instead of default value
> 
> This patch is a bug fix about FeatureFlagExpression in INF file:
>  INF [Source] section now unconditionally use Pcd default value in DEC  when
> handling FeatureFlagExpression, it is wrong.
>  If a Pcd value has been set in the DSC file, we should use latest  value in 
> DSC
> instead of default value.
> 
> Cc: Bob Feng <bob.c.f...@intel.com>
> Cc: Liming Gao <gaolim...@byosoft.com.cn>
> 
> Signed-off-by: Yi Li <yi1...@intel.com>
> ---
>  BaseTools/Source/Python/Workspace/InfBuildData.py | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/BaseTools/Source/Python/Workspace/InfBuildData.py
> b/BaseTools/Source/Python/Workspace/InfBuildData.py
> index 5b9b3d7b4f..e4ff1c6686 100644
> --- a/BaseTools/Source/Python/Workspace/InfBuildData.py
> +++ b/BaseTools/Source/Python/Workspace/InfBuildData.py
> @@ -1084,7 +1084,9 @@ class InfBuildData(ModuleBuildClassObject):
>          else:
>              for Name, Guid in self.Pcds:
>                  if self.Pcds[(Name, Guid)].Type == 'FeatureFlag' or 
> self.Pcds[(Name,
> Guid)].Type == 'FixedAtBuild':
> -                    Pcds['%s.%s' % (Guid, Name)] = self.Pcds[(Name,
> Guid)].DefaultValue
> +                    PcdFullName = '%s.%s' % (Guid, Name);
> +                    if not PcdFullName in Pcds:
> +                        Pcds[PcdFullName] = self.Pcds[(Name,
> + Guid)].DefaultValue
>              try:
>                  Value = ValueExpression(Instance, Pcds)()
>                  if Value == True:
> --
> 2.31.1.windows.1
> 
> 
> 
> 
> 



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