Re: glibc-2.2.3: ld-linux.so.2 error msg

[John Reiser]

Andreas Jaeger wrote:
> 
> "Scott McPeak" <address@hidden> writes:
> 
> > When I run 'ld-linux.so.2 --list <program>', and one of the shared
> > libraries can't be found, the error message doesn't tell me which one:
> >
> >   $ /usr/local/lib/ld-linux.so.2 --list ./delphi
> >   ./delphi: error while loading shared libraries: cannot open shared
> >   object file: cannot load shared object file: No such file or
> >   directory
> 
> Why are you not using ldd directly?  This works fine.

No, there is a bug in Linux 2.4.5 (x<=5 or so) and 2.2.y (y<=18)
where the kernel supplies a bad value for AT_PHDR in some cases,
causing SIGSEGV from "ldd".  I reported this (and the patch to fix)
to linux-kernel on Sat, 02 Jun 2001 17:10:36 -0700.
I don't know whether the bug affects the original poster, 
but it bit me, so I used the --list workaround.

> 
> > (In the above example, ./delphi works fine normally; I commented-out a
> > critical line in /etc/ld.so.conf to cause this.)
> >
> > When this happens, I have to resort to 'strace' to find out which
> > library is the problem.
> 
> You don't have to, use ldd or LD_DEBUG=libs ./delphi,

LD_DEBUG is a workaround, but surely the error message should
give the name of the module.   I reported this as libc/2297 on: 
   Mon May 28 12:16:36 2001
   To: address@hidden
   Subject: rtld: filename lost in message from _dl_map_object_deps

-- 
John Reiser, address@hidden