glibc/pwd/Versions

libc {
  GLIBC_2.0 {
    # e*
    endpwent;

    # f*
    fgetpwent; fgetpwent_r;

    # g*
    getpw; getpwent; getpwent_r; getpwnam; getpwnam_r; getpwuid; getpwuid_r;

    # p*
    putpwent; setpwent;
  }
  GLIBC_2.1.2 {
    # g*
    getpwent_r; getpwuid_r; getpwnam_r;
  }
}