libc {
  GLIBC_2.10 {
    # e*
    endsgent;

    # f*
    fgetsgent; fgetsgent_r;

    # g*
    getsgent; getsgent_r; getsgnam; getsgnam_r;

    # p*
    putsgent;

    # s*
    setsgent;

    # s*
    sgetsgent; sgetsgent_r;
  }
}