mbstowcs(3) may not return -1

[David Demelier]

On 21/06/2012 14:55, Sergey Kandaurov wrote:
> On 21 June 2012 16:38, David Demelier<demelier.david at gmail.com>  wrote:
>> Hello,
>>
>> While reading the manpage of mbstowcs I noticed an error in the RETURN
>> VALUES :
>>
>>      The mbstowcs() function returns the number of wide characters converted,
>>      not counting any terminating null wide character, or -1 if an invalid
>>      multibyte character was encountered.
>>
>> Since size_t is unsigned, it can't returns -1.
>
> It returns (size_t)(-1).
> I don't know how is it correct, but this conforms to C spec.
>

Mm, if I understand well, since it is cast to size_t, I think the return 
value will be SIZE_MAX - 1 then, right?

-- 
David Demelier