bisect: convert bisect_checkout to struct object_id

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

bisect.c

@@ -680,16 +680,16 @@ static int is_expected_rev(const struct object_id *oid)
 	return res;
 }
 
-static int bisect_checkout(const unsigned char *bisect_rev, int no_checkout)
+static int bisect_checkout(const struct object_id *bisect_rev, int no_checkout)
 {
 	char bisect_rev_hex[GIT_MAX_HEXSZ + 1];
 
-	memcpy(bisect_rev_hex, sha1_to_hex(bisect_rev), GIT_SHA1_HEXSZ + 1);
-	update_ref(NULL, "BISECT_EXPECTED_REV", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
+	memcpy(bisect_rev_hex, oid_to_hex(bisect_rev), GIT_SHA1_HEXSZ + 1);
+	update_ref(NULL, "BISECT_EXPECTED_REV", bisect_rev->hash, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
 
 	argv_checkout[2] = bisect_rev_hex;
 	if (no_checkout) {
-		update_ref(NULL, "BISECT_HEAD", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
+		update_ref(NULL, "BISECT_HEAD", bisect_rev->hash, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
 	} else {
 		int res;
 		res = run_command_v_opt(argv_checkout, RUN_GIT_CMD);
@@ -796,7 +796,7 @@ static void check_merge_bases(int no_checkout)
 			handle_skipped_merge_base(mb);
 		} else {
 			printf(_("Bisecting: a merge base must be tested\n"));
-			exit(bisect_checkout(mb->hash, no_checkout));
+			exit(bisect_checkout(mb, no_checkout));
 		}
 	}
 
@@ -939,7 +939,7 @@ int bisect_next_all(const char *prefix, int no_checkout)
 	struct rev_info revs;
 	struct commit_list *tried;
 	int reaches = 0, all = 0, nr, steps;
-	const unsigned char *bisect_rev;
+	struct object_id *bisect_rev;
 	char *steps_msg;
 
 	read_bisect_terms(&term_bad, &term_good);
@@ -977,11 +977,11 @@ int bisect_next_all(const char *prefix, int no_checkout)
 		exit(4);
 	}
 
-	bisect_rev = revs.commits->item->object.oid.hash;
+	bisect_rev = &revs.commits->item->object.oid;
 
-	if (!hashcmp(bisect_rev, current_bad_oid->hash)) {
+	if (!oidcmp(bisect_rev, current_bad_oid)) {
 		exit_if_skipped_commits(tried, current_bad_oid);
-		printf("%s is the first %s commit\n", sha1_to_hex(bisect_rev),
+		printf("%s is the first %s commit\n", oid_to_hex(bisect_rev),
 			term_bad);
 		show_diff_tree(prefix, revs.commits->item);
 		/* This means the bisection process succeeded. */