Re: Seeking info for FAQ on troubleshooting (also Village 4-1 wont run under swarm-1.0.3.)

[Rick Riolo]

Re. the first general "implicit declaration", that means
some function has not been declared.  In this case its
the free and malloc subroutines, which are system subroutines which
are (I think) declared in memory.h (or maybe its now in
<stdlib.h> on modern c's?).
So an #import <memory.h> or <stdlib.h> is called for in the file that 
uses these (Exchange.m).  To figure out what file to include, try
  man free
or sometimes you need to
  man 3 time
to get the section 3 subroutine time 
(rather than the section 1 command time).
That all assumes its a system subroutine that is not declared.
If the name makes it obvious its an application or swarm subroutine,
start using grep in the application *.m or *.h files, or
in the swarm files.

for #2, Assuming I didn't know what the problem was:
I guess I'd just start looking at anything that is 
bringing up windows (eg in ObserverSwarm.m) 
and see what looks to be talking about "zooming" or about
window shapes (ie square vs non-square, i.e., x and y sizing).

I'd try to remember to remove the core file, too!

- 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://pscs.physics.lsa.umich.edu/PEOPLE/rlr-home.html
http://pscs.physics.lsa.umich.edu//pscs.html

On Mon, 10 Nov 1997, Paul Johnson wrote:

> Date: Mon, 10 Nov 1997 19:35:53 -0600 (CST)
> From: Paul Johnson <address@hidden>
> To: address@hidden
> Subject: Seeking info for FAQ on troubleshooting (also Village 4-1 wont run 
> under swarm-1.0.3.)
> 
> 
> Now I'm going to try to collect from you folks insights about
> programming and troubleshooting Swarm. I've already been collecting up
> various compiler/linker error messages.  I don't have a list ready
> to show yet, but if you have any, I'd collect them for the Swarm
> FAQ.
> 
> Along those lines, 
> I just downloaded village, just for the fun of it.  I have two
> support type questions, mostly I'm interested in your philosophy and
> outlook, rather than your specific analysis of this program. 
> 
> 1. When I made it, there were two warnings: 
> Exchange.m: In function `_i_Exchange__addTrader_':
> Exchange.m:45: warning: implicit declaration of function `malloc'
> Exchange.m: In function `_i_Exchange__removeTrader_':
> Exchange.m:89: warning: implicit declaration of function `free'
> 
> I didn't write the code, haven't studied it.  I was just wondering
> if most people see errors like that and ignore them, or what?
> 
> 2.  WHen I ran it, I saw the Swarm control windows, but when I hit
> go, this was what showed up in the xterm:
> 
> *** event raised for error: WindowUsage
> nonsquare zoom given.
> *** execution terminating due to error
> IOT trap/Abort (core dumped)
> 
> I don't suppose I'm interested in troubleshooting this particular
> program, but I'm interested to know if you folks see things like
> that often and how you diagnose them.  Is there a series of steps
> you follow to figure out what went wrong?  I can't make much headway
> with gdb on this one, probably because I don't know what specific
> commands to type. 
> 
> 
> 
> Paul E. Johnson                           address@hidden
> Dept. of Political Science                Office: (913) 864-9086
> University of Kansas                      FAX: (913) 864-5700
> Lawrence, Kansas 66045                    Home: (913) 842-9916                
>      
> 
> 
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