Re: Determine a function's volatility in C

Bborie Park <bkpark@ucdavis.edu> writes:
> I'm wondering if there is a way to determine a function's volatility
> in C.  The function information provided through fmgr_info() doesn't
> provide it.  Ideas?

extern char func_volatile(Oid funcid)

(Most catalog-lookup convenience functions of this ilk can be found in
lsyscache.c, and that's also a good source of prototypes if you need a
field that's not exposed by one of those functions.)

            regards, tom lane