debug pgpool

Hi

I am using DBT-2 database and I use pgpoolII 2.1 with that.
I have modified the function pool_process_query.c in pgpoolII2.1. and I
link pgpoolII2.1 with dbt2.
for some reason the modified functionality doesnt work.

I tried to debug pgpoolII2.1 using gdb. I set the beakpoint at
pool_process_query.c and waited but it didnt resposnd.

Does pgpool II 2.1 work with gdb? is there any way to debug the code?

please Help.

Thanks

--
Megha