Re: [Bug-gnubg] crash on loading SGF file

[Jim Segrave]

On Thu 14 Oct 2004 (13:04 +0200), Robert-Jan Veldhuizen wrote:
> Hi,
> 
> Using the new gnubg build with quick pruning added, this SGF file
> created by an older version crashes the program:
> 
> GNUBG caused an invalid page fault in
> module GNUBG.EXE at 018f:004bb288.
> Registers:
> EAX=00f7007a CS=018f EIP=004bb288 EFLGS=00010246
> EBX=03343830 SS=0197 ESP=00f5cf50 EBP=00f5cf68
> ECX=00000000 DS=0197 ESI=0379beac FS=653f
> EDX=ffffff80 ES=0197 EDI=0379bd58 GS=0000
> Bytes at CS:EIP:
> 0f b7 04 50 83 e0 08 eb 10 c7 44 24 04 08 00 00
> Stack dump:
> 00000d8d 00000008 780049f9 00000000 00000001 00000002 00f5d058 004bd328
> 033436dc 00f5d0d0 0379a2e0 0379a8f4 03799f40 0050e800 0369f4f8 6dc897ab
> 
> link to sgf file (~720KB):  http://home.tiscali.org/zorba/20.sgf

Under freebsd built version, both text and gui, it loads w/o
problems. Here's the result of show statistics match from a gui
copy. I manually patched the version text in gnubg to identify the
version in use. 

GNU Backgammon 0.14.3-prune
Copyright 1999, 2000, 2001, 2002, 2003, 2004 by Gary Wong.
GNU Backgammon is free software, covered by the GNU General Public License
version 2, and you are welcome to change it and/or distribute copies of it
under certain conditions.  Type "show copying" to see the conditions.
There is absolutely no warranty for GNU Backgammon.  Type "show warranty" for
details.
    GNU Backgammon  Position ID: Mc/BBwBsN2AMGA
                    Match ID   : sAFlAQAAUAAA
    +-1--2--3--4--5--6-------7--8--9-10-11-12-+  O: White
    |       O  O  O  O |   |                X |  0 points
    |       O  O  O  O |   |                X |  Rolled 21
    |             O    |   |                X |  
    |                  |   |                X |  
    |                  |   |                X |  
    |                  |BAR|                  |^ 11 point match (Cube: 1)
    |                  |   |                  |  
    |                X |   |                  |  
    |                X |   |    X             |  
    |    O     X     X |   |    X  O        O |  
    | X  O     X     X |   |    X  O        O |  10 points
    +24-23-22-21-20-19------18-17-16-15-14-13-+  X: Blue

(No game) sh st ma
Player                          White                   Blue                   

Chequerplay statistics

Total moves                     129                     132                    
Unforced moves                   92                     110                    
Unmarked moves                    0                       0                    
Moves marked good               117                     116                    
Moves marked doubtful            11                      12                    
Moves marked bad                  1                       3                    
Moves marked very bad             0                       1                    
Error rate (total)              -0.383 ( -2.955%)       -0.684 ( -5.752%)      
Error rate (per move)              -4 ( -0.032%)           -6 ( -0.052%)       
Chequerplay rating              World class             Expert                 


Luck statistics

Rolls marked very lucky           0                       2                    
Rolls marked lucky                2                       6                    
Rolls unmarked                  112                     120                    
Rolls marked unlucky             15                       4                    
Rolls marked very unlucky         0                       0                    
Luck rate (total)               -4.911 (-39.664%)       +1.553 ( +1.934%)      
Luck rate (per move)              -38 ( -0.307%)          +12 ( +0.015%)       
Luck rating                     Better luck next time   None                   


Cube statistics

Total cube decisions            124                      22                    
Close or actual cube decisions   16                       7                    
Doubles                           0                       4                    
Takes                             4                       0                    
Passes                            0                       0                    
Missed doubles (below CP)         0                       0                    
Missed doubles (above CP)         0                       0                    
Wrong doubles (below DP)          0                       0                    
Wrong doubles (above TG)          0                       2 (-0.170 ( -0.593%))
Wrong takes                       1 (-0.135 ( -0.630%))   0                    
Wrong passes                      0                       0                    
Error rate (total)              -0.135 ( -0.630%)       -0.170 ( -0.593%)      
Error rate (per cube decision)     -8 ( -0.039%)          -24 ( -0.085%)       
Cube decision rating            Advanced                Casual player          


Overall statistics

Error rate (total)              -0.518 ( -3.585%)       -0.853 ( -6.345%)      
Error rate (per decision)          -5 ( -0.033%)           -7 ( -0.054%)       
Equiv. Snowie error rate           -2                      -3                  
Overall rating                  World class             Expert                 
Actual result                    -46.70%                 +46.70%               
Luck adjusted result              -5.10%                  +5.10%               
Luck based FIBS rating diff.     -53.63                                        
Error based abs. FIBS rating    1996.8                  1961.1                 
Chequerplay errors rating loss    46.3                    69.1                 
Cube errors rating loss            6.9                    19.8                 



(No game) quit


-- 
Jim Segrave           address@hidden