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[PATCH v2 1/3] send-pack.c: move "no refs in common" abort earlier

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
Jul 8, 2021, 10:53 UTC
Message-ID
<patch-1.3-10375a6484e-20210708T105034Z-avarab@gmail.com>
In-Reply-To
<cover-0.3-00000000000-20210708T105034Z-avarab@gmail.com>

Move the early return if we have no remote refs in send_pack() earlier.

When this was added in 4c353e890c0 (Warn when send-pack does nothing, 2005-12-04) one of the first things we'd do was to abort, but as of cfee10a773b (send-pack/receive-pack: allow errors to be reported back to pusher., 2005-12-25) we've added numerous server_supports() conditions that are acted on later in the function, that won't be used if we don't have remote refs.

Then as of 477673d6f39 (send-pack: support push negotiation, 2021-05-04) we started doing even more work on the assumption that we had some remote refs to feed to --negotiation-tip=* options.

We only hit this condition if we have nothing to push, so we don't need to consider "push.negotiate" etc. only to do nothing with that information.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 send-pack.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/send-pack.c b/send-pack.c
index 9cb9f716509..5a79e0e7110 100644
--- a/send-pack.c
+++ b/send-pack.c
@@ -486,6 +486,12 @@ int send_pack(struct send_pack_args *args,
 	const char *push_cert_nonce = NULL;
 	struct packet_reader reader;
 
+	if (!remote_refs) {
+		fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
+			"Perhaps you should specify a branch.\n");
+		return 0;
+	}
+
 	git_config_get_bool("push.negotiate", &push_negotiate);
 	if (push_negotiate)
 		get_commons_through_negotiation(args->url, remote_refs, &commons);
@@ -534,11 +540,6 @@ int send_pack(struct send_pack_args *args,
 		}
 	}
 
-	if (!remote_refs) {
-		fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
-			"Perhaps you should specify a branch.\n");
-		return 0;
-	}
 	if (args->atomic && !atomic_supported)
 		die(_("the receiving end does not support --atomic push"));
 
-- 
2.32.0.636.g43e71d69cff
Previous: Ævar Arnfjörð BjarmasonNext: Ævar Arnfjörð Bjarmason
Message 7 of 9 in “fetch: fix segfault, missing docs in --negotiate-only”
  1. 0/3 fetch: fix segfault, missing docs in --negotiate-onlyÆvar Arnfjörð Bjarmason, Jun 30, 2021
  2. 1/3 send-pack.c: move "no refs in common" abort earlierÆvar Arnfjörð Bjarmason, Jun 30, 2021
  3. 3/3 fetch: fix segfault in --negotiate-only without --negotiation-tip=*Ævar Arnfjörð Bjarmason, Jun 30, 2021
  4. Jonathan TanJun 30, 2021
  5. 2/3 fetch: document the --negotiate-only optionÆvar Arnfjörð Bjarmason, Jun 30, 2021
  6. 0/3 fetch: fix segfault, missing docs in --negotiate-onlyÆvar Arnfjörð Bjarmason, Jul 8, 2021
  7. 1/3 send-pack.c: move "no refs in common" abort earlierÆvar Arnfjörð Bjarmason, Jul 8, 2021
  8. 2/3 fetch: document the --negotiate-only optionÆvar Arnfjörð Bjarmason, Jul 8, 2021
  9. 3/3 fetch: fix segfault in --negotiate-only without --negotiation-tip=*Ævar Arnfjörð Bjarmason, Jul 8, 2021

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