#define DIFF_SILENT_ON_REMOVED 01
/* report racily-clean paths as modified */
#define DIFF_RACY_IS_MODIFIED 02
-int run_diff_files(struct rev_info *revs, unsigned int option);
+void run_diff_files(struct rev_info *revs, unsigned int option);
#define DIFF_INDEX_CACHED 01
#define DIFF_INDEX_MERGE_BASE 02
-int run_diff_index(struct rev_info *revs, unsigned int option);
+void run_diff_index(struct rev_info *revs, unsigned int option);
int do_diff_cache(const struct object_id *, struct diff_options *);
int diff_flush_patch_id(struct diff_options *, struct object_id *, int);
void flush_one_hunk(struct object_id *result, git_hash_ctx *ctx);
-int diff_result_code(struct diff_options *, int);
+int diff_result_code(struct diff_options *);
int diff_no_index(struct rev_info *,
int implicit_no_index, int, const char **);