mbstowcs(3) may not return -1

[Sergey Kandaurov]

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.

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