gen while loop translation error

This gen code

// find first free index
    index = 0;
    n = dim(index_to_id);
    while (index < n && peek(index_to_id, index) >= 0)
    { // slot not empty
        index += 1;
    }
is wrongly translated like this
int index = ((int)0);
int index_to_id_dim = m_index_to_id_1.dim;
int index_to_id_channels = m_index_to_id_1.channels;
int n = index_to_id_dim;
bool index_ignore_12 = ((index >= index_to_id_dim) || (index < 0));
// samples index_to_id channel 1;
int chan_13 = ((int)0);
bool chan_ignore_14 = ((chan_13 < 0) || (chan_13 >= index_to_id_channels));
t_sample peek_532 = ((chan_ignore_14 || index_ignore_12) ? 0 : m_index_to_id_1.read(index, chan_13));
t_sample peek_533 = index;
while (((index < n) && (peek_532 >= ((int)0)))) {
// abort processing if an infinite loop is suspected;
if (((__loopcount--) <= 0)) {
__exception = GENLIB_ERR_LOOP_OVERFLOW;
break ;
};
index = (index + ((int)1));
};
where the peek_532 in the while condition is NOT updated in the loop.