Detecting memory leaks with libpq?

Hi all,

I'm building a small C application that uses libpq and I was wondering
if there's an easy way to detect memory leaks in my code.

I think I'm calling PQclear and friends correctly, but I'd like to
double-check it. I was wondering if there's a function in libpq to
check memory-use usage/internals, or something like that.

Thanks in advance,
Antonio

P.S.: I assume this is the proper list for these sort of questions, right?