Bug#693848: libc6: ld.so: LD_DEBUG=libs doesn't do what help says

[Samuel Bronson <naesten@gmail.com>]

Package: libc6
Version: 2.13-35
Severity: normal

Dear Maintainer,

I'm a little puzzled here:

Based on this help:

,----[ LD_DEBUG=help /bin/true ]
| Valid options for the LD_DEBUG environment variable are:
| 
|   libs        display library search paths
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|   reloc       display relocation processing
|   files       display progress for input file
|   symbols     display symbol table processing
|   bindings    display information about symbol binding
|   versions    display version dependencies
|   all         all previous options combined
|   statistics  display relocation statistics
|   unused      determined unused DSOs
|   help        display this help message and exit
| 
| To direct the debugging output into a file instead of standard output
| a filename can be specified using the LD_DEBUG_OUTPUT environment variable.
`----

I expected this to list the entire library search path:

,----[ LD_DEBUG=libs /bin/true ]
|       3652:	find library=libc.so.6 [0]; searching
|       3652:	 search cache=/etc/ld.so.cache
|       3652:	  trying file=/lib/i386-linux-gnu/i686/cmov/libc.so.6
|       3652:	
|       3652:	
|       3652:	calling init: /lib/i386-linux-gnu/i686/cmov/libc.so.6
|       3652:	
|       3652:	
|       3652:	initialize program: /bin/true
|       3652:	
|       3652:	
|       3652:	transferring control: /bin/true
|       3652:	
|       3652:	
|       3652:	calling fini: /bin/true [0]
|       3652:	
`----

but, as you can see, it didn't.  Is this just an unclear help message,
or is it actually an implementation bug?


-- System Information:
Debian Release: wheezy/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.2.0-4-686-pae (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libc6 depends on:
ii  libc-bin  2.13-35
ii  libgcc1   1:4.7.2-4

Versions of packages libc6 recommends:
ii  libc6-i686  2.13-35

Versions of packages libc6 suggests:
ii  debconf [debconf-2.0]  1.5.46
ii  glibc-doc              2.13-35
pn  locales                <none>

-- debconf information:
  glibc/upgrade: true
  glibc/disable-screensaver:
* glibc/restart-failed:
* glibc/restart-services: samba openbsd-inetd exim4 cups cron autofs apache2
* libraries/restart-without-asking: false

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