libpthread {
  GLIBC_2.3.3 {
    # Changed PTHREAD_STACK_MIN.
    pthread_attr_setstack; pthread_attr_setstacksize;
  }
}
librt {
  GLIBC_2.3.3 {
    # Changed timer_t.
    timer_create; timer_delete; timer_getoverrun; timer_gettime;
    timer_settime;
  }
}