1: libthread_db {
    2:   GLIBC_2.1.3 {
    3:     # t*
    4:     td_init; td_log; td_ta_clear_event; td_ta_delete; td_ta_enable_stats;
    5:     td_ta_event_addr; td_ta_event_getmsg; td_ta_get_nthreads; td_ta_get_ph;
    6:     td_ta_get_stats; td_ta_map_id2thr; td_ta_map_lwp2thr; td_ta_new;
    7:     td_ta_reset_stats; td_ta_set_event; td_ta_setconcurrency;
    8:     td_ta_thr_iter; td_ta_tsd_iter; td_thr_clear_event; td_thr_dbresume;
    9:     td_thr_dbsuspend; td_thr_event_enable; td_thr_event_getmsg;
   10:     td_thr_get_info; td_thr_getfpregs; td_thr_getgregs; td_thr_getxregs;
   11:     td_thr_getxregsize; td_thr_set_event; td_thr_setfpregs; td_thr_setgregs;
   12:     td_thr_setprio; td_thr_setsigpending; td_thr_setxregs; td_thr_sigsetmask;
   13:     td_thr_tsd; td_thr_validate;
   14:   }
   15:   GLIBC_2.2.3 {
   16:     td_symbol_list;
   17:   }
   18:   GLIBC_2.3 {
   19:     td_thr_tls_get_addr;
   20:   }
   21:   GLIBC_2.3.3 {
   22:     td_thr_tlsbase;
   23:   }
   24: }