http-push: clean up objects list

In http-push's get_delta(), we generate a list of pending objects by recursively processing trees and blobs, adding them to a linked list. And then we iterate over the list, adding a new request for each element. But since we iterate using the list head pointer, at the end it is NULL and all of the actual list structs have been leaked. We can fix this either by using a separate iterator and then calling object_list_free(), or by just freeing as we go. I picked the latter, just because it means we continue to shrink the list as we go, though I'm not sure it matters in practice (we call add_send_request() in the loop, but I don't think it ever looks at the global objects list itself). This fixes several leaks noticed in t5540. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff King committed Sep 24, 2024 at 18:10 UTC 92e1eb491a9b8d47d8aa9e903354f7749fc85c4e
1 file changed +5 -1
http-push.c
+5 -1
@@ -1374,9 +1374,13 @@ static int get_delta(struct rev_info *revs, struct remote_lock *lock)
1374 }
1375
1376 while (objects) {
1377 + struct object_list *next = objects->next;
1378 +
1379 if (!(objects->item->flags & UNINTERESTING))
1380 count += add_send_request(objects->item, lock);
1379 - objects = objects->next;
1381 +
1382 + free(objects);
1383 + objects = next;
1384 }
1385
1386 return count;