[Bug libc/5649] New: too many symbols exported from libc

["bruno at clisp dot org" <sourceware-bugzilla at sourceware dot org>]

Ulrich Drepper once said that the number of symbols exported from libc should
not be high without need, the reason being the size of the ELF hash table
and the startup time of executables.

Here is a list of symbols that are
  1) exported from libc.so (in glibc-2.3.6 at least),
  2) not declared in any public header file (I checked glibc-2.3.6 and -2.6.1),
  3) are not Linux system calls.

Each of them is a candidate for trimming - or for making available in a
public include file if the programmer is intended to use it.

  chflags
  fchflags
  fcrypt
  h_errlist
  h_nerr
  iruserok
  iruserok_af
  key_setnet
  mallwatch
  moncontrol
  nis_clone_directory
  nis_clone_result
  nis_free_directory
  nis_free_object
  nis_free_request
  nis_read_obj
  nis_write_obj
  passwd2des
  pthread_mutexattr_getkind_np
  pthread_mutexattr_setkind_np
  re_max_failures
  readColdStartFile
  registerrpc
  res_gethostbyaddr
  res_gethostbyname
  res_gethostbyname2
  res_send_setqhook
  res_send_setrhook
  rexecoptions
  ruserpass
  sstk
  svcauthdes_stats
  svcfd_create
  svcudp_enablecache
  svcunixfd_create
  sys_sigabbrev
  tr_break
  writeColdStartFile
  xdecrypt
  xdr_accepted_reply
  xdr_authdes_cred
  xdr_authdes_verf
  xdr_rejected_reply
  xencrypt
  yp_maplist

-- 
           Summary: too many symbols exported from libc
           Product: glibc
           Version: 2.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: bruno at clisp dot org
                CC: glibc-bugs at sources dot redhat dot com
 GCC build triplet: i586-unknown-linux-gnu
  GCC host triplet: i586-unknown-linux-gnu
GCC target triplet: i586-unknown-linux-gnu


http://sourceware.org/bugzilla/show_bug.cgi?id=5649

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