[Freeciv-Dev] Re: Server loop (PR#1001)

[Raimar Falke <hawk@xxxxxxxxxxxxxxxxxxxxxxx>]

On Wed, Oct 10, 2001 at 02:49:57AM -0700, Roman Fiedler wrote:
> I've discovered a situation that causes the server to loop. I hope you can
> reproduce the bug with the test.civ.gz saved game. The bug occurs only in a
> very strange situation so that a bugfix for exactly that kind of bug has a low
> priority, but perhaps will this bug affact "normal" games too. This is the
> reason for this bugreport.
> 
> 
> 
> 
> I've installed freeciv version 1.11.4. In one game the server got
> into an unbreakable loop at end of turn, so I used kill -SEGV to
> get the core. The core contained a stacktrace:

I can't reproduce this with the current CVS version. Can you?

> (gdb) bt
> #0  0x808cf05 in map_get_tile ()
> #1  0x807ddf2 in update_unit_activity ()
> #2  0x807d230 in update_unit_activities ()
> #3  0x8065b2c in update_player_activities ()
> #4  0x8053d0a in end_turn ()
> #5  0x8053132 in main ()
> #6  0x400bdbaf in ?? ()
> 
> 
> Also the backtrace contains no line numbers, a look at the source
> tree showed that the problem occurs when transforming swamp to ocean.
> With this knowlege I created a demo map, which reproduced the bug.
> 
> I think the problem is in the list_iterator, which loops across
> all units, but I couldn't locate the bug.
> 
> 
> 
> Questions?
> 
> Is anyone interrested in this bug (it seems to occur only when
> transforming arctic land at border of the map)

If the bug can be reproduced that I'm interested.

> Is there documentation available how the server basics work
> (like the list iterator, etc...) so that I could try fix it
> myself?

There is a file named freeciv_hackers_guide.txt. You can also ask
freeciv-dev.

        Raimar

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