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From: Bruce Taneja. <aataneja@cs.mtu.edu>
To: hartzell@postgres.Berkeley.EDU
Cc: postgres@postgres.Berkeley.EDU
Subject: Re: " GetAttributeByName " ..
Date: Mon, 27 Jun 1994 15:48:30 -0400 (EDT)
Message-ID: <9406271948.AA19597@cs.mtu.edu> (raw)
In-Reply-To: <199406271946.MAA13330@toe.CS.Berkeley.EDU>

> 
> Bruce Taneja. writes:
>  > 
>  > Now why does the GetAttributeByName() work OK w/o the 3rd param.
>  > when running the overpaid(EMP) example in the 8.4.3 section (user manual)
>  > and simply hangs when used w/o the 3rd param in the circle example .. !?
> 
> In general, if a function takes 3 arguments, and you pass it two, then
> you really should expect trouble since it's going to go ahead and use
> some randome system trash as it's third arg.  I'm not in a position to
> go digging around in the source code to find out just what that
> function does with that arg., but it's not surprising that giving it
> something meaningless makes it blow up sometimes.


I think your explanation is quite clear and obvious and in fact goes
without saying .. 
  BUT .. WHY does the user manual do the example in sect.8.4.3. w/o the
 3rd param .. ??????  Was that a mistake ?? 
and what beats me is why did this example work while it failed for the 
circle.c ??

Bruce.

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