Relocation error in gdb

Relocation error in gdb

[Williams, Allen]

I'm trying to run a debug version of the standard libraries in gdb.
They are located in /usr/lib/debug.  After loading gdb ("gdb rssd"), I
do this:
 
LD_PRELOAD /usr/lib/debug/libc.so.6
 
in an attempt to force the program (some odbc libraries in the program,
in particular) to pick up the debug versions.  I receive this error:
 
Starting program: /home/anw/SoftwareProducts/rss/rssd
/home/anw/SoftwareProducts/rss/rssd: relocation error:
/lib/tls/libpthread.so.0: symbol errno, version GLIBC_PRIVATE not
defined in file libc.so.6 with link time reference

Can anyone decipher this?  Here is the backtrace I'm trying to nail
down:
 
#0  0xa7941270 in strcmp () from /lib/tls/libc.so.6
#1  0xa78f50d9 in setlocale () from /lib/tls/libc.so.6
#2  0x96c833fa in my_SQLExtendedFetch () from /usr/lib/odbc/libmyodbc.so
#3  0x96c835b6 in SQLFetch () from /usr/lib/odbc/libmyodbc.so
#4  0xa7a4d798 in SQLFetch () from /usr/lib/libodbc.so.1
#5  0x080561e2 in t_dbBuffer<topic>::GetNext (this=0x98dbefd8,
data=@0xafd1e5b8)
    at /home/anw/SoftwareProducts/Headers/dbTempDef.h:224
#6  0x08050a32 in rssd::InitRSS (this=0xa6d1cf0c) at rssd.cpp:835
#7  0x08050b7e in rssd::AppInit (this=0xa6d1cf0c) at rssd.cpp:692
#8  0x0805cc98 in main (argc=1, argv=0xafd1e7f4) at App.cpp:47

Everything in here from 0 through 4 is system.
 
Thanks, and Regards,
________________________
Allen Williams
allen.williams@harris.com
Office: (321)309-7931
Mobile: (321)258-1272
FAX: (321)727-9607

Re: Relocation error in gdb

[Daniel Jacobowitz]

On Tue, May 08, 2007 at 11:52:42AM -0400, Williams, Allen wrote:
> I'm trying to run a debug version of the standard libraries in gdb.
> They are located in /usr/lib/debug.  After loading gdb ("gdb rssd"), I
> do this:
>  
> LD_PRELOAD /usr/lib/debug/libc.so.6
>  
> in an attempt to force the program (some odbc libraries in the program,
> in particular) to pick up the debug versions.  I receive this error:
>  
> Starting program: /home/anw/SoftwareProducts/rss/rssd
> /home/anw/SoftwareProducts/rss/rssd: relocation error:
> /lib/tls/libpthread.so.0: symbol errno, version GLIBC_PRIVATE not
> defined in file libc.so.6 with link time reference

That won't work outside GDB either.  You can't mix and match different
versions of libc and libpthread.  Try LD_LIBRARY_PATH=/usr/lib/debug
instead.

-- 
Daniel Jacobowitz
CodeSourcery