libc {

  GLIBC_2.0 {

    # global variables

    _sys_errlist; _sys_nerr; _sys_siglist;

    # functions used in other libraries

    __printf_fp; __vfscanf;

    # variables in normal name space

    sys_errlist; sys_nerr; sys_sigabbrev; sys_siglist;

    # a*

    asprintf;

    # c*

    ctermid; cuserid;

    # d*

    dprintf;

    # f*

    flockfile; fprintf; fscanf; ftrylockfile; funlockfile;

    # g*

    getline; getw;

    # p*

    parse_printf_format; perror; printf; putw;

    # r*

    register_printf_function; remove; rename;

    # s*

    scanf; snprintf; sprintf; sscanf;

    # t*

    tempnam; tmpfile; tmpnam; tmpnam_r;

    # v*

    vfprintf; vfscanf; vprintf;

  }

  GLIBC_2.1 {

    # p*

    printf_size; printf_size_info;

    # t*

    tmpfile; tmpfile64;

  }

  GLIBC_2.4 {

    renameat;

  }

  GLIBC_2.7 {

    __isoc99_scanf; __isoc99_vscanf; __isoc99_fscanf; __isoc99_vfscanf;

    __isoc99_sscanf; __isoc99_vsscanf;

  }

  GLIBC_2.10 {

    psiginfo;

    register_printf_modifier; register_printf_type; register_printf_specifier;

  }

  GLIBC_2.28 {

    renameat2;

  }

  GLIBC_PRIVATE {

    # global variables

    _itoa_lower_digits;

    # Used in libcrypt.

    __snprintf;

  }

}