martin rudalics <rudalics@gmx.at> writes:

>> Does the following diff work for you?
>
> The warnings go away but characters are still displayed as empty
> boxes.

Right, that's not unexpected since I made a flub on that patch and
didn't multiply by sizeof (wchar_t) (I posted a version that fixed that
in another message but didn't CC you, sorry).

Here's a third version that uses SAFE_NALLOCA instead: