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Re: [gnugo-devel] paul_3_13.8 and paul_3_13.9

From: bump
Subject: Re: [gnugo-devel] paul_3_13.8 and paul_3_13.9
Date: Sat, 21 Dec 2002 09:22:35 -0800

Paul wrote:

> try this (without paul_3_13.8) - it crashes on global:1
> already. either there is a real bug, or owl goal can
> contain an empty intersection. can you decide on this
> case? i'm still pretty lost in tons of owl code...

The crash comes during estimate_territorial_value during
the evaluation of B:F13. The move has been tried and W:E13
is removed from the board. But E13 is marked in the saved_stones
array which is then passed to matchpat as a goal.

As I noted in my previous message this must be different
from the problem in global:4.

Here's the backtrace:

#0  do_matchpat (anchor=126, callback=0x80778cc
    color=2, pattern=0x8235534, callback_data=0x8453280, goal=0xbffff0e0 "")
    at matchpat.c:488
#1  0x0807c835 in matchpat_loop (
    callback=0x80778cc <followup_influence_callback>, color=2, anchor=1, 
    pdb=0x823c5f4, callback_data=0x8453280, goal=0xbffff0e0 "", 
    anchor_in_goal=1) at matchpat.c:580
#2  0x0807d3c6 in matchpat_goal_anchor (
    callback=0x80778cc <followup_influence_callback>, color=2, pdb=0x823c5f4, 
    callback_data=0x8453280, goal=0xbffff0e0 "", anchor_in_goal=1)
    at matchpat.c:1206
#3  0x0807997f in compute_followup_influence (pos=146, color=2, 
    saved_stones=0xbffff5e0 "") at influence.c:1627
#4  0x08079b0a in compute_move_influence (pos=146, color=2, 
    saved_stones=0xbffff5e0 "") at influence.c:1667
#5  0x08079f95 in influence_delta_territory (pos=146, color=2, 
    saved_stones=0xbffff5e0 "", followup_value=0x8504e30) at influence.c:1830
#6  0x080cb1f6 in estimate_territorial_value (pos=146, color=2, score=59.5)
    at value_moves.c:1868
#7  0x080cce41 in value_move_reasons (pos=146, color=2, 
    pure_threat_value=0.400000006, score=59.5) at value_moves.c:2457
#8  0x080cdd43 in value_moves (color=2, pure_threat_value=0.400000006, 
    score=59.5) at value_moves.c:2656
#9  0x080cf23b in review_move_reasons (the_move=0xbffff900, val=0xbffff8d4, 
    color=2, pure_threat_value=0.400000006, score=59.5, allowed_moves=0x0)
    at value_moves.c:3051
#10 0x08072eb4 in do_genmove (move=0xbffff900, color=2, 
    pure_threat_value=0.400000006, allowed_moves=0x0) at genmove.c:484
#11 0x0807277a in genmove (i=0xbffff940, j=0xbffff944, color=2)
    at genmove.c:296
#12 0x0807b3ab in gnugo_genmove (i=0xbffff940, j=0xbffff944, color=2)
    at interface.c:281
#13 0x080529f5 in load_and_analyze_sgf_file (gameinfo=0xbffffa40)
    at play_solo.c:159
#14 0x0804a578 in main (argc=5, argv=0xbffffae4) at main.c:987
#15 0x400ad507 in __libc_start_main (main=0x8049280 <main>, argc=5, 
    ubp_av=0xbffffae4, init=0x8048dd0 <_init>, fini=0x8104990 <_fini>, 
    rtld_fini=0x4000dc14 <_dl_fini>, stack_end=0xbffffadc)
    at ../sysdeps/generic/libc-start.c:129


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