[luatex] Segmentation fault on LuaTeX

[Akira Kakuto]

> \newcount\X
> 
> \X=1
> \loop A%
>   \advance\X by 1
>   \ifnum \X <10000
> \repeat
> 
> \end

If I test with
void new_hyphenation(halfword head, halfword tail)
{
    return;
}

in lang/texlang.w, the example runs.
So the function may be problematic.

Best,
Akira