Using gdb and gdbserver with a 32 bit binary on a 64 bit machine with Centos 5 complains about memory access or badly formatted data

Question

I have two identical 64 bit Centos 5 machines, that are networked, and share their /home mount. I compile a simple Hello World program on one, and then I have figured out h

Answer 1

If you want to debug 32-bit process using 64-bit gdb/gdbserver, you need a newer version of GDB. In particular, you need this:

gdbserver/ChangeLog:

2009-05-12  Doug Evans  <dje@google.com>

        Biarch support for i386/amd64 gdbserver.

Alternatively, you can build gdb/gdbserver you already have from source in 32-bit mode by running

./configure CC='gcc -m32'

and use gdb32/gdbserver32 to debug your processes. I don't see any advantage of doing this though -- newer versions of GDB have many fixes, speedups, and STL pretty printers are nice.