Function glib_sys::g_convert_with_iconv

pub unsafe extern "C" fn g_convert_with_iconv(
    str: *const u8,
    len: ssize_t,
    converter: GIConv,
    bytes_read: *mut size_t,
    bytes_written: *mut size_t,
    error: *mut *mut GError
) -> *mut u8