struct strbuf;
struct diff_filespec;
struct userdiff_driver;
-struct sha1_array;
+struct oid_array;
struct commit;
struct combine_diff_path;
extern void show_combined_diff(struct combine_diff_path *elem, int num_parent,
int dense, struct rev_info *);
-extern void diff_tree_combined(const unsigned char *sha1, const struct sha1_array *parents, int dense, struct rev_info *rev);
+extern void diff_tree_combined(const unsigned char *sha1, const struct oid_array *parents, int dense, struct rev_info *rev);
extern void diff_tree_combined_merge(const struct commit *commit, int dense, struct rev_info *rev);
extern int run_diff_files(struct rev_info *revs, unsigned int option);
extern int run_diff_index(struct rev_info *revs, int cached);
-extern int do_diff_cache(const unsigned char *, struct diff_options *);
+extern int do_diff_cache(const struct object_id *, struct diff_options *);
extern int diff_flush_patch_id(struct diff_options *, unsigned char *, int);
extern int diff_result_code(struct diff_options *, int);