Re: [PATCH v9] kallsyms: Add self-test facility

[Leizhen (ThunderTown)]

On 2022/12/16 19:44, Andreas Schwab wrote:
> On Dez 15 2022, Geert Uytterhoeven wrote:
> 
>> Changing:
>>
>>     --- a/arch/m68k/include/asm/string.h
>>     +++ b/arch/m68k/include/asm/string.h
>>     @@ -42,7 +42,7 @@ static inline char *strncpy(char *dest, const
>> char *src, size_t n)
>>      #define __HAVE_ARCH_STRCMP
>>      static inline int strcmp(const char *cs, const char *ct)
>>      {
>>     -       char res;
>>     +       signed char res;
>>
>>             asm ("\n"
>>                     "1:     move.b  (%0)+,%2\n"     /* get *cs */
> 
> Note that strcmp needs to compute the return value from the difference
> of the _unsigned_ characters.  That does not explain the error, though,
> since symbol names don't have characters with the high bit set.

Why consider the high bit? It is not memcmp(). If the high bit is set,
it is the user's fault.


> 

-- 
Regards,
  Zhen Lei