clone_rl_permanent
err_ptr_rl = clone_rl_permanent(alloc_rl(err_ptr_min, err_ptr_max));
ret->value_ranges = clone_rl_permanent(dinfo->value_ranges);
struct range_list *clone_rl_permanent(struct range_list *list);
valid_ptr_rl = clone_rl_permanent(valid_ptr_rl);
zero_perm = clone_rl_permanent(alloc_rl(zero, zero));
one_perm = clone_rl_permanent(alloc_rl(one, one));
rl = clone_rl_permanent(rl);