... has this comment (fmgr.h:506):
/* These are for invocation of a function identified by OID with a
* directly-computed parameter list. Note that neither arguments
nor result
* are allowed to be NULL. These are essentially FunctionLookup()
followed
* by FunctionCallN(). If the same function is to be invoked
repeatedly,
* do the FunctionLookup() once and then use FunctionCallN().
*/
However, there doesn't appear to be any such animal as FunctionLookup().
Shouldn't it say fmgr_info() instead?
cheers
andrew