Convert struct object to object_id

struct object is one of the major data structures dealing with object
IDs.  Convert it to use struct object_id instead of an unsigned char
array.  Convert get_object_hash to refer to the new member as well.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Jeff King <peff@peff.net>

54 files changed, 256 insertions, 256 deletions

diff --git a/bisect.c b/bisect.c
index 59e8636927..54166f008a 100644
--- a/bisect.c
+++ b/bisect.c
@@ -193,7 +193,7 @@ static int compare_commit_dist(const void *a_, const void *b_)
 	b = (struct commit_dist *)b_;
 	if (a->distance != b->distance)
 		return b->distance - a->distance; /* desc sort */
-	return hashcmp(a->commit->object.sha1, b->commit->object.sha1);
+	return oidcmp(&a->commit->object.oid, &b->commit->object.oid);
 }
 
 static struct commit_list *best_bisection_sorted(struct commit_list *list, int nr)
@@ -575,7 +575,7 @@ static struct commit_list *skip_away(struct commit_list *list, int count)
 
 	for (i = 0; cur; cur = cur->next, i++) {
 		if (i == index) {
-			if (hashcmp(cur->item->object.sha1, current_bad_oid->hash))
+			if (oidcmp(&cur->item->object.oid, current_bad_oid))
 				return cur;
 			if (previous)
 				return previous;
diff --git a/builtin/am.c b/builtin/am.c
index f1a25ab6ad..9fb42fdd71 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -1441,7 +1441,7 @@ static void get_commit_info(struct am_state *state, struct commit *commit)
 	assert(!state->msg);
 	msg = strstr(buffer, "\n\n");
 	if (!msg)
-		die(_("unable to parse commit %s"), sha1_to_hex(commit->object.sha1));
+		die(_("unable to parse commit %s"), oid_to_hex(&commit->object.oid));
 	state->msg = xstrdup(msg + 2);
 	state->msg_len = strlen(state->msg);
 }
diff --git a/builtin/blame.c b/builtin/blame.c
index c6ea9774b7..28c48bd453 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -557,7 +557,7 @@ static struct origin *find_origin(struct scoreboard *sb,
 		       PATHSPEC_LITERAL_PATH, "", paths);
 	diff_setup_done(&diff_opts);
 
-	if (is_null_sha1(origin->commit->object.sha1))
+	if (is_null_oid(&origin->commit->object.oid))
 		do_diff_cache(get_object_hash(parent->tree->object), &diff_opts);
 	else
 		diff_tree_sha1(get_object_hash(parent->tree->object),
@@ -627,7 +627,7 @@ static struct origin *find_rename(struct scoreboard *sb,
 	diff_opts.single_follow = origin->path;
 	diff_setup_done(&diff_opts);
 
-	if (is_null_sha1(origin->commit->object.sha1))
+	if (is_null_oid(&origin->commit->object.oid))
 		do_diff_cache(get_object_hash(parent->tree->object), &diff_opts);
 	else
 		diff_tree_sha1(get_object_hash(parent->tree->object),
@@ -977,8 +977,8 @@ static void pass_blame_to_parent(struct scoreboard *sb,
 
 	if (diff_hunks(&file_p, &file_o, 0, blame_chunk_cb, &d))
 		die("unable to generate diff (%s -> %s)",
-		    sha1_to_hex(parent->commit->object.sha1),
-		    sha1_to_hex(target->commit->object.sha1));
+		    oid_to_hex(&parent->commit->object.oid),
+		    oid_to_hex(&target->commit->object.oid));
 	/* The rest are the same as the parent */
 	blame_chunk(&d.dstq, &d.srcq, INT_MAX, d.offset, INT_MAX, parent);
 	*d.dstq = NULL;
@@ -1126,7 +1126,7 @@ static void find_copy_in_blob(struct scoreboard *sb,
 	memset(split, 0, sizeof(struct blame_entry [3]));
 	if (diff_hunks(file_p, &file_o, 1, handle_split_cb, &d))
 		die("unable to generate diff (%s)",
-		    sha1_to_hex(parent->commit->object.sha1));
+		    oid_to_hex(&parent->commit->object.oid));
 	/* remainder, if any, all match the preimage */
 	handle_split(sb, ent, d.tlno, d.plno, ent->num_lines, parent, split);
 }
@@ -1275,7 +1275,7 @@ static void find_copy_in_parent(struct scoreboard *sb,
 		&& (!porigin || strcmp(target->path, porigin->path))))
 		DIFF_OPT_SET(&diff_opts, FIND_COPIES_HARDER);
 
-	if (is_null_sha1(target->commit->object.sha1))
+	if (is_null_oid(&target->commit->object.oid))
 		do_diff_cache(get_object_hash(parent->tree->object), &diff_opts);
 	else
 		diff_tree_sha1(get_object_hash(parent->tree->object),
@@ -1690,7 +1690,7 @@ static void get_commit_info(struct commit *commit,
 	if (len)
 		strbuf_add(&ret->summary, subject, len);
 	else
-		strbuf_addf(&ret->summary, "(%s)", sha1_to_hex(commit->object.sha1));
+		strbuf_addf(&ret->summary, "(%s)", oid_to_hex(&commit->object.oid));
 
 	unuse_commit_buffer(commit, message);
 }
@@ -1733,7 +1733,7 @@ static int emit_one_suspect_detail(struct origin *suspect, int repeat)
 		printf("boundary\n");
 	if (suspect->previous) {
 		struct origin *prev = suspect->previous;
-		printf("previous %s ", sha1_to_hex(prev->commit->object.sha1));
+		printf("previous %s ", oid_to_hex(&prev->commit->object.oid));
 		write_name_quoted(prev->path, stdout, '\n');
 	}
 
@@ -1752,7 +1752,7 @@ static void found_guilty_entry(struct blame_entry *ent)
 		struct origin *suspect = ent->suspect;
 
 		printf("%s %d %d %d\n",
-		       sha1_to_hex(suspect->commit->object.sha1),
+		       oid_to_hex(&suspect->commit->object.oid),
 		       ent->s_lno + 1, ent->lno + 1, ent->num_lines);
 		emit_one_suspect_detail(suspect, 0);
 		write_filename_info(suspect->path);
@@ -1882,7 +1882,7 @@ static void emit_porcelain(struct scoreboard *sb, struct blame_entry *ent,
 	struct origin *suspect = ent->suspect;
 	char hex[GIT_SHA1_HEXSZ + 1];
 
-	sha1_to_hex_r(hex, suspect->commit->object.sha1);
+	sha1_to_hex_r(hex, suspect->commit->object.oid.hash);
 	printf("%s %d %d %d\n",
 	       hex,
 	       ent->s_lno + 1,
@@ -1922,7 +1922,7 @@ static void emit_other(struct scoreboard *sb, struct blame_entry *ent, int opt)
 	int show_raw_time = !!(opt & OUTPUT_RAW_TIMESTAMP);
 
 	get_commit_info(suspect->commit, &ci, 1);
-	sha1_to_hex_r(hex, suspect->commit->object.sha1);
+	sha1_to_hex_r(hex, suspect->commit->object.oid.hash);
 
 	cp = nth_line(sb, ent->lno);
 	for (cnt = 0; cnt < ent->num_lines; cnt++) {
@@ -2153,7 +2153,7 @@ static void sanity_check_refcnt(struct scoreboard *sb)
 		if (ent->suspect->refcnt <= 0) {
 			fprintf(stderr, "%s in %s has negative refcnt %d\n",
 				ent->suspect->path,
-				sha1_to_hex(ent->suspect->commit->object.sha1),
+				oid_to_hex(&ent->suspect->commit->object.oid),
 				ent->suspect->refcnt);
 			baa = 1;
 		}
@@ -2310,7 +2310,7 @@ static struct commit *fake_working_tree_commit(struct diff_options *opt,
 	strbuf_addstr(&msg, "tree 0000000000000000000000000000000000000000\n");
 	for (parent = commit->parents; parent; parent = parent->next)
 		strbuf_addf(&msg, "parent %s\n",
-			    sha1_to_hex(parent->item->object.sha1));
+			    oid_to_hex(&parent->item->object.oid));
 	strbuf_addf(&msg,
 		    "author %s\n"
 		    "committer %s\n\n"
@@ -2740,7 +2740,7 @@ parse_done:
 
 		sb.revs->children.name = "children";
 		while (c->parents &&
-		       hashcmp(c->object.sha1, sb.final->object.sha1)) {
+		       oidcmp(&c->object.oid, &sb.final->object.oid)) {
 			struct commit_list *l = xcalloc(1, sizeof(*l));
 
 			l->item = c;
@@ -2750,11 +2750,11 @@ parse_done:
 			c = c->parents->item;
 		}
 
-		if (hashcmp(c->object.sha1, sb.final->object.sha1))
+		if (oidcmp(&c->object.oid, &sb.final->object.oid))
 			die("--reverse --first-parent together require range along first-parent chain");
 	}
 
-	if (is_null_sha1(sb.final->object.sha1)) {
+	if (is_null_oid(&sb.final->object.oid)) {
 		o = sb.final->util;
 		sb.final_buf = xmemdupz(o->file.ptr, o->file.size);
 		sb.final_buf_size = o->file.size;
diff --git a/builtin/checkout.c b/builtin/checkout.c
index bca3a04c07..50fd893f7a 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -56,8 +56,8 @@ static int post_checkout_hook(struct commit *old, struct commit *new,
 			      int changed)
 {
 	return run_hook_le(NULL, "post-checkout",
-			   sha1_to_hex(old ? old->object.sha1 : null_sha1),
-			   sha1_to_hex(new ? new->object.sha1 : null_sha1),
+			   sha1_to_hex(old ? old->object.oid.hash : null_sha1),
+			   sha1_to_hex(new ? new->object.oid.hash : null_sha1),
 			   changed ? "1" : "0", NULL);
 	/* "new" can be NULL when checking out from the index before
 	   a commit exists. */
@@ -513,7 +513,7 @@ static int merge_working_tree(const struct checkout_opts *opts,
 					   get_object_hash(old->commit->object) :
 					   EMPTY_TREE_SHA1_BIN);
 		init_tree_desc(&trees[0], tree->buffer, tree->size);
-		tree = parse_tree_indirect(new->commit->object.sha1);
+		tree = parse_tree_indirect(new->commit->object.oid.hash);
 		init_tree_desc(&trees[1], tree->buffer, tree->size);
 
 		ret = unpack_trees(2, trees, &topts);
@@ -641,7 +641,7 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
 
 	old_desc = old->name;
 	if (!old_desc && old->commit)
-		old_desc = sha1_to_hex(old->commit->object.sha1);
+		old_desc = oid_to_hex(&old->commit->object.oid);
 
 	reflog_msg = getenv("GIT_REFLOG_ACTION");
 	if (!reflog_msg)
@@ -780,10 +780,10 @@ static void orphaned_commit_warning(struct commit *old, struct commit *new)
 	setup_revisions(0, NULL, &revs, NULL);
 
 	object->flags &= ~UNINTERESTING;
-	add_pending_object(&revs, object, sha1_to_hex(object->sha1));
+	add_pending_object(&revs, object, oid_to_hex(&object->oid));
 
 	for_each_ref(add_pending_uninteresting_ref, &revs);
-	add_pending_sha1(&revs, "HEAD", new->object.sha1, UNINTERESTING);
+	add_pending_sha1(&revs, "HEAD", new->object.oid.hash, UNINTERESTING);
 
 	refs = revs.pending;
 	revs.leak_pending = 1;
diff --git a/builtin/commit-tree.c b/builtin/commit-tree.c
index 8747c0f2fb..3feeffeab1 100644
--- a/builtin/commit-tree.c
+++ b/builtin/commit-tree.c
@@ -16,11 +16,11 @@ static const char *sign_commit;
 
 static void new_parent(struct commit *parent, struct commit_list **parents_p)
 {
-	unsigned char *sha1 = parent->object.sha1;
+	struct object_id *oid = &parent->object.oid;
 	struct commit_list *parents;
 	for (parents = *parents_p; parents; parents = parents->next) {
 		if (parents->item == parent) {
-			error("duplicate parent %s ignored", sha1_to_hex(sha1));
+			error("duplicate parent %s ignored", oid_to_hex(oid));
 			return;
 		}
 		parents_p = &parents->next;
diff --git a/builtin/describe.c b/builtin/describe.c
index c0c373b418..11f7300aad 100644
--- a/builtin/describe.c
+++ b/builtin/describe.c
@@ -267,7 +267,7 @@ static void describe(const char *arg, int last_one)
 	}
 
 	if (!max_candidates)
-		die(_("no tag exactly matches '%s'"), sha1_to_hex(cmit->object.sha1));
+		die(_("no tag exactly matches '%s'"), oid_to_hex(&cmit->object.oid));
 	if (debug)
 		fprintf(stderr, _("searching to describe %s\n"), arg);
 
@@ -317,7 +317,7 @@ static void describe(const char *arg, int last_one)
 		if (annotated_cnt && !list) {
 			if (debug)
 				fprintf(stderr, _("finished search at %s\n"),
-					sha1_to_hex(c->object.sha1));
+					oid_to_hex(&c->object.oid));
 			break;
 		}
 		while (parents) {
@@ -334,9 +334,9 @@ static void describe(const char *arg, int last_one)
 	}
 
 	if (!match_cnt) {
-		const unsigned char *sha1 = cmit->object.sha1;
+		struct object_id *oid = &cmit->object.oid;
 		if (always) {
-			printf("%s", find_unique_abbrev(sha1, abbrev));
+			printf("%s", find_unique_abbrev(oid->hash, abbrev));
 			if (dirty)
 				printf("%s", dirty);
 			printf("\n");
@@ -345,11 +345,11 @@ static void describe(const char *arg, int last_one)
 		if (unannotated_cnt)
 			die(_("No annotated tags can describe '%s'.\n"
 			    "However, there were unannotated tags: try --tags."),
-			    sha1_to_hex(sha1));
+			    oid_to_hex(oid));
 		else
 			die(_("No tags can describe '%s'.\n"
 			    "Try --always, or create some tags."),
-			    sha1_to_hex(sha1));
+			    oid_to_hex(oid));
 	}
 
 	qsort(all_matches, match_cnt, sizeof(all_matches[0]), compare_pt);
@@ -374,7 +374,7 @@ static void describe(const char *arg, int last_one)
 				_("more than %i tags found; listed %i most recent\n"
 				"gave up search at %s\n"),
 				max_candidates, max_candidates,
-				sha1_to_hex(gave_up_on->object.sha1));
+				oid_to_hex(&gave_up_on->object.oid));
 		}
 	}
 
diff --git a/builtin/diff-tree.c b/builtin/diff-tree.c
index cf7e9604b3..6fef266ea3 100644
--- a/builtin/diff-tree.c
+++ b/builtin/diff-tree.c
@@ -49,8 +49,8 @@ static int stdin_diff_trees(struct tree *tree1, char *line, int len)
 	tree2 = lookup_tree(sha1);
 	if (!tree2 || parse_tree(tree2))
 		return -1;
-	printf("%s %s\n", sha1_to_hex(tree1->object.sha1),
-			  sha1_to_hex(tree2->object.sha1));
+	printf("%s %s\n", oid_to_hex(&tree1->object.oid),
+			  oid_to_hex(&tree2->object.oid));
 	diff_tree_sha1(get_object_hash(tree1->object), get_object_hash(tree2->object),
 		       "", &log_tree_opt.diffopt);
 	log_tree_diff_flush(&log_tree_opt);
diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index 30faf248f7..1337a2385a 100644
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c
@@ -544,13 +544,13 @@ static void handle_commit(struct commit *commit, struct rev_info *rev)
 	author = strstr(commit_buffer, "\nauthor ");
 	if (!author)
 		die ("Could not find author in commit %s",
-		     sha1_to_hex(commit->object.sha1));
+		     oid_to_hex(&commit->object.oid));
 	author++;
 	author_end = strchrnul(author, '\n');
 	committer = strstr(author_end, "\ncommitter ");
 	if (!committer)
 		die ("Could not find committer in commit %s",
-		     sha1_to_hex(commit->object.sha1));
+		     oid_to_hex(&commit->object.oid));
 	committer++;
 	committer_end = strchrnul(committer, '\n');
 	message = strstr(committer_end, "\n\n");
@@ -661,13 +661,13 @@ static void handle_tag(const char *name, struct tag *tag)
 	}
 	if (tagged->type == OBJ_TREE) {
 		warning("Omitting tag %s,\nsince tags of trees (or tags of tags of trees, etc.) are not supported.",
-			sha1_to_hex(tag->object.sha1));
+			oid_to_hex(&tag->object.oid));
 		return;
 	}
 
 	buf = read_sha1_file(get_object_hash(tag->object), &type, &size);
 	if (!buf)
-		die ("Could not read tag %s", sha1_to_hex(tag->object.sha1));
+		die ("Could not read tag %s", oid_to_hex(&tag->object.oid));
 	message = memmem(buf, size, "\n\n", 2);
 	if (message) {
 		message += 2;
@@ -706,16 +706,16 @@ static void handle_tag(const char *name, struct tag *tag)
 			case ABORT:
 				die ("Encountered signed tag %s; use "
 				     "--signed-tags=<mode> to handle it.",
-				     sha1_to_hex(tag->object.sha1));
+				     oid_to_hex(&tag->object.oid));
 			case WARN:
 				warning ("Exporting signed tag %s",
-					 sha1_to_hex(tag->object.sha1));
+					 oid_to_hex(&tag->object.oid));
 				/* fallthru */
 			case VERBATIM:
 				break;
 			case WARN_STRIP:
 				warning ("Stripping signature from tag %s",
-					 sha1_to_hex(tag->object.sha1));
+					 oid_to_hex(&tag->object.oid));
 				/* fallthru */
 			case STRIP:
 				message_size = signature + 1 - message;
@@ -731,14 +731,14 @@ static void handle_tag(const char *name, struct tag *tag)
 		case ABORT:
 			die ("Tag %s tags unexported object; use "
 			     "--tag-of-filtered-object=<mode> to handle it.",
-			     sha1_to_hex(tag->object.sha1));
+			     oid_to_hex(&tag->object.oid));
 		case DROP:
 			/* Ignore this tag altogether */
 			return;
 		case REWRITE:
 			if (tagged->type != OBJ_COMMIT) {
 				die ("Tag %s tags unexported %s!",
-				     sha1_to_hex(tag->object.sha1),
+				     oid_to_hex(&tag->object.oid),
 				     typename(tagged->type));
 			}
 			p = (struct commit *)tagged;
@@ -751,7 +751,7 @@ static void handle_tag(const char *name, struct tag *tag)
 					break;
 				if (!p->parents)
 					die ("Can't find replacement commit for tag %s\n",
-					     sha1_to_hex(tag->object.sha1));
+					     oid_to_hex(&tag->object.oid));
 				p = p->parents->item;
 			}
 			tagged_mark = get_object_mark(&p->object);
@@ -888,7 +888,7 @@ static void export_marks(char *file)
 		if (deco->base && deco->base->type == 1) {
 			mark = ptr_to_mark(deco->decoration);
 			if (fprintf(f, ":%"PRIu32" %s\n", mark,
-				sha1_to_hex(deco->base->sha1)) < 0) {
+				oid_to_hex(&deco->base->oid)) < 0) {
 			    e = 1;
 			    break;
 			}
diff --git a/builtin/fmt-merge-msg.c b/builtin/fmt-merge-msg.c
index a1505002bd..12aba984eb 100644
--- a/builtin/fmt-merge-msg.c
+++ b/builtin/fmt-merge-msg.c
@@ -378,7 +378,7 @@ static void shortlog(const char *name,
 
 		if (!sb.len)
 			string_list_append(&subjects,
-					   sha1_to_hex(commit->object.sha1));
+					   oid_to_hex(&commit->object.oid));
 		else
 			string_list_append(&subjects, strbuf_detach(&sb, NULL));
 	}
diff --git a/builtin/fsck.c b/builtin/fsck.c
index 40206696cf..7bfb4938fb 100644
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -67,7 +67,7 @@ static void objreport(struct object *obj, const char *msg_type,
 			const char *err)
 {
 	fprintf(stderr, "%s in %s %s: %s\n",
-		msg_type, typename(obj->type), sha1_to_hex(obj->sha1), err);
+		msg_type, typename(obj->type), oid_to_hex(&obj->oid), err);
 }
 
 static int objerror(struct object *obj, const char *err)
@@ -97,7 +97,7 @@ static int mark_object(struct object *obj, int type, void *data, struct fsck_opt
 	if (!obj) {
 		/* ... these references to parent->fld are safe here */
 		printf("broken link from %7s %s\n",
-			   typename(parent->type), sha1_to_hex(parent->sha1));
+			   typename(parent->type), oid_to_hex(&parent->oid));
 		printf("broken link from %7s %s\n",
 			   (type == OBJ_ANY ? "unknown" : typename(type)), "unknown");
 		errors_found |= ERROR_REACHABLE;
@@ -112,11 +112,11 @@ static int mark_object(struct object *obj, int type, void *data, struct fsck_opt
 		return 0;
 	obj->flags |= REACHABLE;
 	if (!(obj->flags & HAS_OBJ)) {
-		if (parent && !has_sha1_file(obj->sha1)) {
+		if (parent && !has_object_file(&obj->oid)) {
 			printf("broken link from %7s %s\n",
-				 typename(parent->type), sha1_to_hex(parent->sha1));
+				 typename(parent->type), oid_to_hex(&parent->oid));
 			printf("              to %7s %s\n",
-				 typename(obj->type), sha1_to_hex(obj->sha1));
+				 typename(obj->type), oid_to_hex(&obj->oid));
 			errors_found |= ERROR_REACHABLE;
 		}
 		return 1;
@@ -188,9 +188,9 @@ static void check_reachable_object(struct object *obj)
 	if (!(obj->flags & HAS_OBJ)) {
 		if (has_sha1_pack(get_object_hash(*obj)))
 			return; /* it is in pack - forget about it */
-		if (connectivity_only && has_sha1_file(obj->sha1))
+		if (connectivity_only && has_object_file(&obj->oid))
 			return;
-		printf("missing %s %s\n", typename(obj->type), sha1_to_hex(obj->sha1));
+		printf("missing %s %s\n", typename(obj->type), oid_to_hex(&obj->oid));
 		errors_found |= ERROR_REACHABLE;
 		return;
 	}
@@ -215,7 +215,7 @@ static void check_unreachable_object(struct object *obj)
 	 * since this is something that is prunable.
 	 */
 	if (show_unreachable) {
-		printf("unreachable %s %s\n", typename(obj->type), sha1_to_hex(obj->sha1));
+		printf("unreachable %s %s\n", typename(obj->type), oid_to_hex(&obj->oid));
 		return;
 	}
 
@@ -234,11 +234,11 @@ static void check_unreachable_object(struct object *obj)
 	if (!obj->used) {
 		if (show_dangling)
 			printf("dangling %s %s\n", typename(obj->type),
-			       sha1_to_hex(obj->sha1));
+			       oid_to_hex(&obj->oid));
 		if (write_lost_and_found) {
 			char *filename = git_pathdup("lost-found/%s/%s",
 				obj->type == OBJ_COMMIT ? "commit" : "other",
-				sha1_to_hex(obj->sha1));
+				oid_to_hex(&obj->oid));
 			FILE *f;
 
 			if (safe_create_leading_directories_const(filename)) {
@@ -252,7 +252,7 @@ static void check_unreachable_object(struct object *obj)
 				if (stream_blob_to_fd(fileno(f), get_object_hash(*obj), NULL, 1))
 					die_errno("Could not write '%s'", filename);
 			} else
-				fprintf(f, "%s\n", sha1_to_hex(obj->sha1));
+				fprintf(f, "%s\n", oid_to_hex(&obj->oid));
 			if (fclose(f))
 				die_errno("Could not finish '%s'",
 					  filename);
@@ -271,7 +271,7 @@ static void check_unreachable_object(struct object *obj)
 static void check_object(struct object *obj)
 {
 	if (verbose)
-		fprintf(stderr, "Checking %s\n", sha1_to_hex(obj->sha1));
+		fprintf(stderr, "Checking %s\n", oid_to_hex(&obj->oid));
 
 	if (obj->flags & REACHABLE)
 		check_reachable_object(obj);
@@ -307,7 +307,7 @@ static int fsck_obj(struct object *obj)
 
 	if (verbose)
 		fprintf(stderr, "Checking %s %s\n",
-			typename(obj->type), sha1_to_hex(obj->sha1));
+			typename(obj->type), oid_to_hex(&obj->oid));
 
 	if (fsck_walk(obj, NULL, &fsck_obj_options))
 		objerror(obj, "broken links");
@@ -326,15 +326,15 @@ static int fsck_obj(struct object *obj)
 		free_commit_buffer(commit);
 
 		if (!commit->parents && show_root)
-			printf("root %s\n", sha1_to_hex(commit->object.sha1));
+			printf("root %s\n", oid_to_hex(&commit->object.oid));
 	}
 
 	if (obj->type == OBJ_TAG) {
 		struct tag *tag = (struct tag *) obj;
 
 		if (show_tags && tag->tagged) {
-			printf("tagged %s %s", typename(tag->tagged->type), sha1_to_hex(tag->tagged->sha1));
-			printf(" (%s) in %s\n", tag->tag, sha1_to_hex(tag->object.sha1));
+			printf("tagged %s %s", typename(tag->tagged->type), oid_to_hex(&tag->tagged->oid));
+			printf(" (%s) in %s\n", tag->tag, oid_to_hex(&tag->object.oid));
 		}
 	}
 
diff --git a/builtin/grep.c b/builtin/grep.c
index 9c42fc03b9..ca3ceea42c 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -468,12 +468,12 @@ static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
 		int hit, len;
 
 		grep_read_lock();
-		data = read_object_with_reference(obj->sha1, tree_type,
+		data = read_object_with_reference(obj->oid.hash, tree_type,
 						  &size, NULL);
 		grep_read_unlock();
 
 		if (!data)
-			die(_("unable to read tree (%s)"), sha1_to_hex(obj->sha1));
+			die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid));
 
 		len = name ? strlen(name) : 0;
 		strbuf_init(&base, PATH_MAX + len + 1);
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index b01a8c0e22..48b470dd7a 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -199,7 +199,7 @@ static int mark_link(struct object *obj, int type, void *data, struct fsck_optio
 		return -1;
 
 	if (type != OBJ_ANY && obj->type != type)
-		die(_("object type mismatch at %s"), sha1_to_hex(obj->sha1));
+		die(_("object type mismatch at %s"), oid_to_hex(&obj->oid));
 
 	obj->flags |= FLAG_LINK;
 	return 0;
@@ -220,10 +220,10 @@ static unsigned check_object(struct object *obj)
 		int type = sha1_object_info(get_object_hash(*obj), &size);
 		if (type <= 0)
 			die(_("did not receive expected object %s"),
-			      sha1_to_hex(obj->sha1));
+			      oid_to_hex(&obj->oid));
 		if (type != obj->type)