Re: [sqlsmith] Failed assertion in joinrels.c

There are many more such exposed functions, which can throw cache lookup failure error if we pass wrong value.

i.e. 

record_in

domain_in

fmgr_c_validator

edb_get_objecttypeheaddef

plpgsql_validator

pg_procedure_is_visible

Are we planning to change these also..

below query is one example (from sqlsmith).

ERROR:  cache lookup failed for procedure 0

postgres=# select

postgres-#                         pg_catalog.record_in(

postgres(#                           cast(pg_catalog.numerictypmodout(

postgres(#                             cast(98 as integer)) as cstring),

postgres(#                           cast(1 as oid),

postgres(#                           cast(35 as integer));

ERROR:  cache lookup failed for type 1