Marco Cimarosti <[EMAIL PROTECTED]>:
> 1) What should the function do when passed a NULL as the last argument?
> Should it use an internal mbstate_t variable or not? What should it return?
It uses an internal mbstate_t. Return values as usual.
> 2) What should it do and return if a mbstate_t is supplied that contains
> invalid state values (as it may happen with, e.g., an uninitialized local
> variable)?
It may detect the problem and return EINVAL. However, I think it may
also not detect the problem and behave in a way that it could not
behave had it started from a valid conversion state. It would nice to
implement mbrtowc() so that this second case doesn't happen, but there
is no requirement to validate the conversion state, as far as I know.
Of course, no one would want to impose such a requirement as it might
make mbrtowc slower.
Edmund
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