ALLOC_GROW(it->down, it->subtree_nr + 1, it->subtree_alloc);
        it->subtree_nr++;
 
-       down = xmalloc(sizeof(*down) + pathlen + 1);
+       FLEX_ALLOC_MEM(down, name, path, pathlen);
        down->cache_tree = NULL;
        down->namelen = pathlen;
-       memcpy(down->name, path, pathlen);
-       down->name[pathlen] = 0;
 
        if (pos < it->subtree_nr)
                memmove(it->down + pos + 1,
                 * they are not part of generated trees. Invalidate up
                 * to root to force cache-tree users to read elsewhere.
                 */
-               if (ce->ce_flags & CE_INTENT_TO_ADD) {
+               if (ce_intent_to_add(ce)) {
                        to_invalidate = 1;
                        continue;
                }
        struct name_entry entry;
        int cnt;
 
-       hashcpy(it->sha1, tree->object.sha1);
+       hashcpy(it->sha1, tree->object.oid.hash);
        init_tree_desc(&desc, tree->buffer, tree->size);
        cnt = 0;
        while (tree_entry(&desc, &entry)) {