[U-Boot] [PATCH] lib: sha1: Change uint8_t to unsigned char for sha1_der_prefix array.

[Wilson Lee <wilson.lee@ni.com>]

Hi Simon,

On Mon, 2017-11-20 at 08:38 -0700, Simon Glass wrote:
> Hi Wilson,
> 
> On 7 November 2017 at 19:30, Wilson Lee <wilson.lee@ni.com> wrote:
> > 
> > uint8_t used in sha1_der_prefix array was not able to recognize by
> > compiler when try to build the tools using 'HOSTCC'. That is
> > because,
> > uint8_t is undefined when 'HOSTCC' is defined because asm/type.h is
> > not
> > included in that case. Use unsigned char for sha1_der_prefix[]
> > array
> > instead.
> > 
> > This commit is to remove and change the uint8_t to unsigned char
> > for
> > sha1_der_perfix[] array.
> nit: prefix
> 
> This change is OK I suppose. But I'm not sure what compiler you are
> using. This type should be provided in stdint.h - can you take a look
> at why it is not?
> 
> Regards,
> Simon

Kindly correct me if I am wrong. I think the uint8_t was provided in
the "inttypes.h" header file. However, when we using HOSTCC to compile
the code, the "common.h" (which include "inttypes.h") does not included
and cause compilation to fail. The summary version of the code shown
below:

#ifndef USE_HOSTCC
#include <common.h>
#include <linux/string.h>
#else
#include <string.h>
#endif /* USE_HOSTCC */


I think there have 2 solution for this:
    1. Include the "inttypes.h" header file.
    2. Change the uint8_t to unsigned char.

However, I would like to proceed with 2nd option. Because, in existing
sha1 library, variable data type was declare as unsigned char, unsigned
long... and I am thinking convert uint8_t to unsigned char will make
the variable data type more consistent in sha1 library code.


Thanks, Simon.

Best Regards,
Wilson Lee