libc {

  GLIBC_2.0 {

    # e*

    endgrent;

    # f*

    fgetgrent; fgetgrent_r;

    # g*

    getgrent; getgrent_r; getgrgid; getgrgid_r; getgrnam; getgrnam_r;

    getgroups;

    # i*

    initgroups;

    # s*

    setgrent; setgroups;

  }

  GLIBC_2.1 {

    # p*

    putgrent;

  }

  GLIBC_2.1.2 {

    # g*

    getgrent_r; getgrgid_r; getgrnam_r;

  }

  GLIBC_2.2.4 {

    # g*

    getgrouplist;

  }

  GLIBC_PRIVATE {

    __merge_grp; __copy_grp;

  }

}