Re: Change location of function/type installed from C-extension

I try investigate where PotsgreSQL keeps path of load libraries in catalog.

select version();
version
----------------------------------------------------------------------------------------------------------------------
PostgreSQL 9.3.4 on x86_64-unknown-linux-gnu, compiled by gcc (Ubuntu
5.4.0-6ubuntu1~16.04.4) 5.4.0 20160609, 64-bit

select oid, datname from pg_database where datname = 'user';

oid | datname
-------+---------
16384 | user

$ grep --text --null-data '$libdir/pg_trgm' data/test/base/16384/*

data/test/base/16384/11829:set_limit!$libdir/pg_trgm ...

select relname, relfilenode from pg_class where relfilenode = 11829;
relname | relfilenode
---------+-------------
(0 rows)

Hmmm. Where is table with filenode 11829?

Thanks.