Handle case where start_idx >= sizeof(unsieve_pattern_t)
Handle case where start_idx >= sizeof(unsieve_pattern_t)

mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs,mancoast/cado-nfs