[Freeciv-Dev] Re: (PR#10359) Saving changes game state

["Marko Lindqvist" <cazfi74@xxxxxxxxx>]

<URL: http://bugs.freeciv.org/Ticket/Display.html?id=10359 >

Marko Lindqvist wrote:

> Marko Lindqvist wrote:
>> Marko Lindqvist wrote:
>>> Marko Lindqvist wrote:
>>>>   It seems that simply (auto)saving a game changes its state. Usually 
>>>> this is difficult to notice - when you are not saving there is no save 
>>>> games to compare.
>>>   I'm reopening this ticket. Attached autogame has saveturns setting of 
>>> 25. First autosave it produces is for year 2750 BC. If one changes 
>>> saveturns setting to 1, it will produce different autosave for 2750 BC.
>>>   Revision used 12145 trunk.
>>   Ahem. Saveturns setting itself is stored to savegame. Once I remove 
>> saveturns from savegames, they start to differ at year 500.
> 
>   This (and #18825) must be because of bad memory access somewhere. 
> Saving a game allocates and frees memory thus changing how things are 
> arranged in memory. I managed to produce with saveturns = 25 identical 
> 500 AD savegame to one produced with saveturns = 1, when I made certain 

  Problem found.
  Autosettler founds city from hut. Infrastructure cache for this new 
city is not immediately initialized. Another autosettler tries to use cache.


  - ML