How To Make Proper Debugs For Developers With Gdb?

[Auntie Mangos]

Look at this topic for inspiration: http://getmangos.eu/community/viewtopic.php?id=23142

[dsrgre]

I have found that sometimes developers ask to provide debug from GDB, but I was not able to find how to do it in proper way. So I tried to do it myself without any manual and I've got problem.

So I try to connect gdb to running mangos via PID:

gdb --pid=1234

gdb starts do something and then it paused with these lines in the end of stdout:

Loaded symbols for /lib64/ld-linux-x86-64.so.2

Reading symbols from /lib/libnss_files.so.2...done.

Loaded symbols for /lib/libnss_files.so.2

Failed to read a valid object file image from memory.

0x00002b13f3b6da96 in select () from /lib/libc.so.6

Mangos server freez after or during that.

After I press 'q' and quit gdb mangos server return to normal functioning.

Please help me to use gdb!

[dsrgre]

I start:

gdb ./mangos-worldd -x mangos.gdb --batch >>worldd.log 2>>worldd.err

It output:

Using host libthread_db library "/lib/libthread_db.so.1".

in worldd.log and finished.