- page->cp[i] = xmalloc ((2 * n[i] + 2) * sizeof *page->cp[i]);
- page->join_crossing[i] = xzalloc ((n[i] + 1)
- * sizeof *page->join_crossing[i]);
+ page->cp[i] = xcalloc ((2 * n[i] + 2) , sizeof *page->cp[i]);
+ page->join_crossing[i] = xcalloc ((n[i] + 1) , sizeof *page->join_crossing[i]);