[PATCH v2 4/5] fsck: support lazy objects as CLI argument

[Jonathan Tan <jonathantanmy@google.com>]

Teach fsck to not treat missing objects provided on the CLI as an error
when extensions.lazyobject is set.

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
---
 builtin/fsck.c         |  2 ++
 t/t0410-lazy-object.sh | 16 ++++++++++++++++
 2 files changed, 18 insertions(+)

diff --git a/builtin/fsck.c b/builtin/fsck.c
index 19681c5b3..20415902f 100644
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -754,6 +754,8 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
 			struct object *obj = lookup_object(oid.hash);
 
 			if (!obj || !(obj->flags & HAS_OBJ)) {
+				if (repository_format_lazy_object)
+					continue;
 				error("%s: object missing", oid_to_hex(&oid));
 				errors_found |= ERROR_OBJECT;
 				continue;
diff --git a/t/t0410-lazy-object.sh b/t/t0410-lazy-object.sh
index 45f665a15..3ac61c1c5 100755
--- a/t/t0410-lazy-object.sh
+++ b/t/t0410-lazy-object.sh
@@ -76,4 +76,20 @@ test_expect_success '...but succeeds if lazyobject is set' '
 	git -C repo fsck
 '
 
+test_expect_success 'fsck fails on lazy object directly given in command-line' '
+	rm -rf repo &&
+	test_create_repo repo &&
+	test_commit -C repo 1 &&
+	HASH=$(git hash-object repo/1.t) &&
+	delete_object repo "$HASH" &&
+
+	test_must_fail git -C repo fsck "$HASH"
+'
+
+test_expect_success '...but succeeds if lazyobject is set' '
+	git -C repo config core.repositoryformatversion 1 &&
+	git -C repo config extensions.lazyobject "arbitrary string" &&
+	git -C repo fsck "$HASH"
+'
+
 test_done
-- 
2.14.0.rc1.383.gd1ce394fe2-goog