... has this comment (fmgr.h:506):
/* These are for invocation of a function identified by OID with a * directly-computed parameter list. Note
thatneither 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
useFunctionCallN(). */
However, there doesn't appear to be any such animal as FunctionLookup().
Shouldn't it say fmgr_info() instead?
cheers
andrew