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SubjectRe: [PATCHv3 2/3] lib: printf: append support of '%*ph[CDN]'
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On Wed, Jul 4, 2012 at 6:09 PM, Joe Perches <joe@perches.com> wrote:
> On Wed, 2012-07-04 at 11:45 +0300, Andy Shevchenko wrote:
>> This patch adds a support of the variable width buffer to print it
>> as a hex string with a delimiter.

>> +     if (spec.field_width <= 0)
>> +             /* nothing to print */
>> +             return buf;
>
> It may be better to default to a 1 and add
>
>         if (addr == ZERO_OR_NULL_PTR)
>
> to avoid dereferencing a NULL or a pointer
> to a zero length object.
Good point.

>> +             for (p = hex_str; *p != '\0'; p++) {
>> +                     if (buf < end)
>> +                             *buf = *p;
>> +                     ++buf;
>> +             }
>
> why not just directly write to *buf as long as buf < end?
buf < end - 1, otherwise correct.
And yes, it eliminates hex_str array as well.

--
With Best Regards,
Andy Shevchenko
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