Re: [gnugo-devel] error message from gnugo

[Gunnar Farneback]

Trung Hoang wrote:
> I was running my first generation AIs in gnu-go, and got an error.
> But unfortunatly I can't save the game to a sgf file. I will attach
> the finished game as a text file, this is the best I can do right
> now. Hope this help. I will let the console with the game stay, if
> there are some "secret" commands I can use to save it as a sgf file.

If you're running in GTP mode there's a printsgf command you can use.
However, sometimes the complete GTP command stream is needed to
reproduce a crash.

Is your experiment deterministic enough to reproduce the problem?

>    A B C D E F G H J K L M N O P Q R S T
> 19 . X . X . X . X . X . X . X . X . X . 19
> 18 X . X . X . X . X . X . X . X . X . X 18
> 17 . X . X . X . X . X . X . X . X . X . 17
> 16 O . O + O . O . O + O . X . X + X . X 16
> 15 . O . O . O . O . O . O . O . O . O . 15
> 14 O . O . O . O . O . O . O . O . O . O 14
> 13 . O . X . O . O . O . O . O . O . O . 13
> 12 O . X . O . X . O . X . O . X . O . X 12
> 11 . X . O . X . O . X . O . X . O . X . 11     WHITE (O) has captured 0 
> stones
> 10 X . O + X . O . X + O . X . O + X . O 10     BLACK (X) has captured 0 
> stones
>  9 . O . X . O . X . O . X . O . X . O . 9
>  8 O . X . O . X . O . X . O . X . O . X 8
>  7 . X . O . X . O . X . O . X . O . X . 7
>  6 X . O . X . O . X . O . X . O . X . O 6
>  5 . O . X . O . X . O . X . O . X . O . 5
>  4 O . X + O . X . O + X . O . X + O . X 4
>  3 . X . O . X . O . X . O . X . O . X . 3
>  2 . . O . X . O . X . O X X . O . X . O 2
>  1 . . . . . . . . . . . . . . . . . . . 1
>    A B C D E F G H J K L M N O P Q R S T

This is a rather weird position. No telling what obscure bug it may
have triggered. It would be really good to find it.
 
> gnugo 3.4 (seed 1212265658): You stepped on a bug.
> Please save this game as an sgf file and mail it to address@hidden
> If you can, please also include the debug output above this message.

You didn't get any lines above the board, saying something about
assertion failure at some file and line number?

/Gunnar