Re: [PATCH] BaseTools/DevicePath: fix GCC build error in print_mem(), and clean it up

[Laszlo Ersek <lersek@redhat.com>]

On 01/03/18 09:37, Zhu, Yonghong wrote:
> I pushed this fix first since it blocked some GCC tool chain.
> 
> SHA-1: 9a6b445bc2e6e2db6f67ab3cc425d5831aa1b7c8 
> 
> Best Regards,
> Zhu Yonghong

Thank you!
Laszlo

> 
> 
> -----Original Message-----
> From: Zhu, Yonghong 
> Sent: Wednesday, January 3, 2018 9:27 AM
> To: Laszlo Ersek <lersek@redhat.com>; edk2-devel-01 <edk2-devel@lists.01.org>
> Cc: Gao, Liming <liming.gao@intel.com>; Zhu, Yonghong <yonghong.zhu@intel.com>
> Subject: RE: [PATCH] BaseTools/DevicePath: fix GCC build error in print_mem(), and clean it up
> 
> Thanks.
> 
> Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com> 
> 
> Best Regards,
> Zhu Yonghong
> 
> 
> -----Original Message-----
> From: Laszlo Ersek [mailto:lersek@redhat.com]
> Sent: Wednesday, January 03, 2018 1:17 AM
> To: edk2-devel-01 <edk2-devel@lists.01.org>
> Cc: Gao, Liming <liming.gao@intel.com>; Zhu, Yonghong <yonghong.zhu@intel.com>
> Subject: [PATCH] BaseTools/DevicePath: fix GCC build error in print_mem(), and clean it up
> 
> Currently "BaseTools/Source/C/DevicePath/DevicePath.c" fails to build with
> GCC48:
> 
>> DevicePath.c: In function 'print_mem':
>> DevicePath.c:109:5: error: 'for' loop initial declarations are only 
>> allowed in C99 mode
>>      for (size_t i=0; i<n; i++) {
>>      ^
>> DevicePath.c:109:5: note: use option -std=c99 or -std=gnu99 to compile 
>> your code
> 
> In addition, the print_mem() function does not conform to the edk2 coding
> style:
> 
> - we use CamelCase and no underscores in identifiers,
> - the types and type qualifiers should follow the edk2 style,
> - initialization as part of definition is forbidden for local variables.
> 
> Clean these up.
> 
> While updating the print_mem()/PrintMem() call sites, also remove the superfluous parentheses around the second argument.
> 
> Cc: Liming Gao <liming.gao@intel.com>
> Cc: Yonghong Zhu <yonghong.zhu@intel.com>
> Fixes: 7dbc50bd244d95fdc1741b9cfc561f0bfd724de1
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Laszlo Ersek <lersek@redhat.com>
> ---
> 
> Notes:
>     Build-tested only (I don't have a DSC file with a device path PCD).
> 
>  BaseTools/Source/C/DevicePath/DevicePath.c | 20 ++++++++++++++------
>  1 file changed, 14 insertions(+), 6 deletions(-)
> 
> diff --git a/BaseTools/Source/C/DevicePath/DevicePath.c b/BaseTools/Source/C/DevicePath/DevicePath.c
> index 4c87163209ab..76b8553b7145 100644
> --- a/BaseTools/Source/C/DevicePath/DevicePath.c
> +++ b/BaseTools/Source/C/DevicePath/DevicePath.c
> @@ -103,11 +103,19 @@ Returns:
>  }
>  
>  
> -void print_mem(void const *vp, size_t n)
> +STATIC
> +VOID
> +PrintMem (
> +  CONST VOID *Buffer,
> +  UINTN      Count
> +  )
>  {
> -    unsigned char const *p = vp;
> -    for (size_t i=0; i<n; i++) {
> -        printf("0x%02x ", p[i]);
> +  CONST UINT8 *Bytes;
> +  UINTN       Idx;
> +
> +  Bytes = Buffer;
> +  for (Idx = 0; Idx < Count; Idx++) {
> +    printf("0x%02x ", Bytes[Idx]);
>    }
>  }
>  
> @@ -177,10 +185,10 @@ int main(int argc, CHAR8 *argv[])
>    DevicePath = UefiDevicePathLibConvertTextToDevicePath(Str16);
>    while (!((DevicePath->Type == END_DEVICE_PATH_TYPE) && (DevicePath->SubType == END_ENTIRE_DEVICE_PATH_SUBTYPE)) )
>    {
> -    print_mem(DevicePath, (DevicePath->Length[0] | DevicePath->Length[1] << 8));
> +    PrintMem (DevicePath, DevicePath->Length[0] | DevicePath->Length[1] 
> + << 8);
>      DevicePath = (EFI_DEVICE_PATH_PROTOCOL *)((UINT8 *)DevicePath + (DevicePath->Length[0] | DevicePath->Length[1] << 8));
>    }
> -  print_mem(DevicePath, (DevicePath->Length[0] | DevicePath->Length[1] << 8));
> +  PrintMem (DevicePath, DevicePath->Length[0] | DevicePath->Length[1] 
> + << 8);
>    putchar('\n');
>    return STATUS_SUCCESS;
>  }
> --
> 2.14.1.3.gb7cf6e02401b
>