[HACKERS] Relpartbound, toasting and pg_class

Hi,

Just noticed that pg_class now has several varlena fields:
#ifdef CATALOG_VARLEN            /* variable-length fields start here *//* NOTE: These fields are not present in a
relcacheentry's rd_rel field. */aclitem        relacl[1];        /* access permissions */text        reloptions[1];
/*access-method-specific options */pg_node_tree relpartbound;    /* partition bound node tree */
 
#endif

of those relpartbound is fairly new. And pretty much unbounded in
size. Aren't we going to run into issues because pg_class doesn't have a
toast table? It's quite reasonable to use a multi-field composite type
as a partition boundary...

Greetings,

Andres Freund