Robert Haas escribió:
> The fastgetattr() attempts to make provision for the case where isnull
> is a NULL pointer, but it doesn't seem to work. I tried it and got:
>
> relcache.c:494: error: invalid use of void expression
> relcache.c:494: error: invalid use of void expression
> relcache.c:494: warning: left-hand operand of comma expression has no effect
> relcache.c:494: warning: left-hand operand of comma expression has no effect
>
> Changing the fourth argument from NULL to &isnull made the problem go away.
>
> I think we should either fix this so it actually works (if that's even
> possible), or rip out the code that tries to cope with it.
+1 for removing it. I used that macro as a pattern to write some other
macro to which I tried to pass a NULL value and wasted at least a couple
of hours trying to figure out why it wasn't working.
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
