Tim:
 This change is good. Reviewed-by: Liming Gao <gaolim...@byosoft.com.cn>

 Besides, which compiler detects this issue?

Thanks
Liming
> -----邮件原件-----
> 发件人: devel@edk2.groups.io <devel@edk2.groups.io> 代表 Tim Crawford
> 发送时间: 2021年3月26日 8:48
> 收件人: devel@edk2.groups.io
> 主题: [edk2-devel] [PATCH] BaseTools/GenFw: Fix casting result of
> comparison
> 
> The cast in IsDataShdr() is only applied the left side, causing it to
> always return FALSE.
> 
> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3271
> Signed-off-by: Tim Crawford <tcrawf...@system76.com>
> ---
>  BaseTools/Source/C/GenFw/Elf32Convert.c | 2 +-
>  BaseTools/Source/C/GenFw/Elf64Convert.c | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/BaseTools/Source/C/GenFw/Elf32Convert.c
> b/BaseTools/Source/C/GenFw/Elf32Convert.c
> index 7f351287a9..df54991768 100644
> --- a/BaseTools/Source/C/GenFw/Elf32Convert.c
> +++ b/BaseTools/Source/C/GenFw/Elf32Convert.c
> @@ -262,7 +262,7 @@ IsDataShdr (
>    if (IsHiiRsrcShdr(Shdr)) {
> 
>      return FALSE;
> 
>    }
> 
> -  return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) ==
> (SHF_ALLOC | SHF_WRITE);
> 
> +  return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) ==
> (SHF_ALLOC | SHF_WRITE));
> 
>  }
> 
> 
> 
>  STATIC
> 
> diff --git a/BaseTools/Source/C/GenFw/Elf64Convert.c
> b/BaseTools/Source/C/GenFw/Elf64Convert.c
> index 4ed6b4477e..1bf1e9accb 100644
> --- a/BaseTools/Source/C/GenFw/Elf64Convert.c
> +++ b/BaseTools/Source/C/GenFw/Elf64Convert.c
> @@ -270,7 +270,7 @@ IsDataShdr (
>    if (IsHiiRsrcShdr(Shdr)) {
> 
>      return FALSE;
> 
>    }
> 
> -  return (BOOLEAN) (Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) ==
> (SHF_ALLOC | SHF_WRITE);
> 
> +  return (BOOLEAN) ((Shdr->sh_flags & (SHF_WRITE | SHF_ALLOC)) ==
> (SHF_ALLOC | SHF_WRITE));
> 
>  }
> 
> 
> 
>  STATIC
> 
> --
> 2.30.2
> 
> 
> 
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