Re: messages to nil

[Rick Riolo]

Marcus,
THanks for the info.
One more question...can you remind me how I overide a function definition
without having gcc give me a "duplicate symbols" error?
(I see the official version is in /usr/local/lib/libobjc.a(sendmsg.o)).
Either I never knew or I can't recall how to do that!
THanks!
 - r

Rick Riolo                           address@hidden
Program for Study of Complex Systems (PSCS)
4068 Randall Lab                
University of Michigan         Ann Arbor MI 48109-1120
Phone: 313 763 3323                  Fax: 313 763 9267
http://www.pscs.umich.edu/PEOPLE/rlr-home.html

On 22 Apr 1998, Marcus G. Daniels wrote:

> Date: 22 Apr 1998 10:21:58 -0700
> From: Marcus G. Daniels <address@hidden>
> To: address@hidden
> Subject: Re: messages to nil
> 
> >>>>> "RLR" == Rick Riolo <address@hidden> writes:
> 
> RLR> One of our users asked about messages to nil and what a pain it
> RLR> is that they don't generate a warning.
> 
> You can override:
> 
>   id nil_method (id receiver, SEL op, ...);
> 
> to do whatever seems appropriate.  I've added such an override to
> defobj -- and in the process found a bug in Swarm!  (So, if you do
> define this function in an swarm-1.1 application, you should have
> the function do no more than generate a warning).
> 
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