Function __stdio_common_vsnwprintf_s 

pub unsafe extern "C" fn __stdio_common_vsnwprintf_s(
    _Options: c_ulonglong,
    _Buffer: *mut u16,
    _BufferCount: usize,
    _MaxCount: usize,
    _Format: *const u16,
    _Locale: _locale_t,
    _ArgList: va_list,
) -> c_int