extern void record_resolve_undo(struct index_state *, struct cache_entry *);
extern void resolve_undo_write(struct strbuf *, struct string_list *);
-extern struct string_list *resolve_undo_read(void *, unsigned long);
+extern struct string_list *resolve_undo_read(const char *, unsigned long);
extern void resolve_undo_clear_index(struct index_state *);
extern int unmerge_index_entry_at(struct index_state *, int);
extern void unmerge_index(struct index_state *, const char **);