Sameer Thakur wrote: >> My experience is that you cannot set breakpoints before the library >> is loaded, so you first have to call a function in the library, then >> you interrupt and set the breakpoint. > I tried to do the following > 1. Execute Postgres (now auto_explain is loaded) > 2. Start a psql session and attach gdb to forked Postmaster process > 3. Now set break point in custom_fmgr_hook > 4. Execute select * from now(); > > Still the breakpoint gets skipped. But gdb tells you that it cannot set the breakpoint correctly when you try to, right? Try like this: - connect with psql - call your custom_fmgr_hook - attach to the backend with gdb - set the breakpoint - call custom_fmgr_hook again Yours, Laurenz Albe -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general