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[PATCH 4/4] transport: mark unused parameters in fetch_refs_from_bundle()

From
Jeff King <peff@peff.net>
Date
Mar 17, 2023, 19:17 UTC
Message-ID
<ZBS8vt97YJj3wMxn@coredump.intra.peff.net>
In-Reply-To
<ZBS77VYL9ZrxKtCN@coredump.intra.peff.net>

We don't look at the "to_fetch" or "nr_heads" parameters at all. At first glance this seems like a bug (or at least pessimisation), because it means we fetch more objects from the bundle than we actually need. But the bundle does not have any way of computing the set of reachable objects itself (we'd have to pull all of the objects out to walk them). And anyway, we've probably already paid most of the cost of grabbing the objects, since we must copy the bundle locally before accessing it.

So it's perfectly reasonable for the bundle code to just pull everything into the local object store. Unneeded objects can be dropped later via gc, etc.

But we should mark these unused parameters as such to avoid the wrath of -Wunused-parameter.

Signed-off-by: Jeff King <peff@peff.net>
---
 transport.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/transport.c b/transport.c
index 81950bf755f..c5abf26f31e 100644
--- a/transport.c
+++ b/transport.c
@@ -167,7 +167,8 @@ static struct ref *get_refs_from_bundle(struct transport *transport,
 }
 
 static int fetch_refs_from_bundle(struct transport *transport,
-			       int nr_heads, struct ref **to_fetch)
+				  int nr_heads UNUSED,
+				  struct ref **to_fetch UNUSED)
 {
 	struct bundle_transport_data *data = transport->data;
 	struct strvec extra_index_pack_args = STRVEC_INIT;
-- 
2.40.0.581.g8d688c70eca
Previous: Jeff KingNext: Junio C Hamano
Message 7 of 8 in “more unused-parameter fixes”
  1. 0/4 more unused-parameter fixesJeff King, Mar 17, 2023
  2. 1/4 mailmap: drop debugging codeJeff King, Mar 17, 2023
  3. Eric SunshineMar 17, 2023
  4. Jeff KingMar 17, 2023
  5. 2/4 http: drop unused parameter from start_object_request()Jeff King, Mar 17, 2023
  6. 3/4 http: mark unused parameter in fill_active_slot() callbacksJeff King, Mar 17, 2023
  7. 4/4 transport: mark unused parameters in fetch_refs_from_bundle()Jeff King, Mar 17, 2023
  8. Junio C HamanoMar 17, 2023

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