void report_difference (struct tar_stat_info *st, const char *message, ...);
/* Module sparse.c */
-bool sparse_file_p (struct tar_stat_info *st);
bool sparse_member_p (struct tar_stat_info *st);
bool sparse_fixup_header (struct tar_stat_info *st);
enum dump_status sparse_dump_file (int, struct tar_stat_info *st);