[gnugo-devel] Stack overflow on OS X 10.8.2

[Erik S. Steinmetz]

To whom it may concern (in case anyone is still maintaining gnugo),

I have been running gnugo 3.8 without any problem for quite some time on OS X 
running on a dual quad-core Mac Pro circa 2008 (Intel Xeon processors). I 
compiled it in April of 2011, so that must have been under OS X 10.7, and it's 
still running fine (probably about 20,000 games worth or more).

Recently I have been running gnugo 3.8 on Intel Core i7, mid to late 2012 Macs 
(both a 15" MBP Retina and a Mac Mini), compiling under 10.8.2. On both of 
these machines, I get the occasional stack overflow. Perhaps one in every four 
hundred games.

Presumably there is something different in the build process either because of 
the architecture (Xeon vs Core i7), or because of the OS (10.7 vs 10.8) and I 
was wondering whether anyone else had experienced a similar problem.

I have attached the crash report below, in case the stack trace is of any help.

Any ideas on what one might do to alleviate this?

Many thanks,

Erik Steinmetz
address@hidden


Process:         gnugo [3340]
Path:            /Users/USER/*/gnugo
Identifier:      gnugo
Version:         0
Code Type:       X86-64 (Native)
Parent Process:  java [3334]
User ID:         501

Date/Time:       2013-01-11 22:46:09.208 -0600
OS Version:      Mac OS X 10.8.2 (12C3006)
Report Version:  10

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000

Application Specific Information:
[3340] stack overflow

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib              0x00007fff86dd9d46 __kill + 10
1   libsystem_c.dylib                   0x00007fff86c74ec0 __abort + 193
2   libsystem_c.dylib                   0x00007fff86c75d17 __stack_chk_fail + 
195
3   gnugo                               0x0000000104916948 recognize_eye + 152 
(optics.c:1225)
4   gnugo                               0x0000000104917327 read_eye + 87 
(optics.c:1046)
5   gnugo                               0x0000000104917ae2 
compute_eyes_pessimistic + 738 (optics.c:843)
6   gnugo                               0x000000010491b5ec owl_estimate_life + 
924 (owl.c:3302)
7   gnugo                               0x000000010491f182 do_owl_attack + 866 
(owl.c:2097)
8   gnugo                               0x000000010491e971 do_owl_defend + 3409 
(owl.c:2937)
9   gnugo                               0x00000001049203eb do_owl_attack + 5579 
(owl.c:2368)
10  gnugo                               0x0000000104921fa5 owl_attack + 341 
(owl.c:1995)
11  gnugo                               0x00000001048fcb2c make_dragons + 5244 
(dragon.c:222)
12  gnugo                               0x0000000104900aaa examine_position + 
362 (genmove.c:166)
13  gnugo                               0x0000000104900ecb do_genmove + 539 
(genmove.c:432)
14  gnugo                               0x0000000104901f6e genmove + 62 
(genmove.c:264)
15  gnugo                               0x00000001048e1c66 gtp_genmove + 86 
(play_gtp.c:2569)
16  gnugo                               0x00000001048e8b01 gtp_main_loop + 385 
(gtp.c:142)
17  gnugo                               0x00000001048ded3b play_gtp + 107 
(play_gtp.c:353)
18  gnugo                               0x00000001048db790 main + 7504 
(main.c:1431)
19  libdyld.dylib                       0x00007fff848457e1 start + 1

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x00007fff5b318e20  rcx: 0x00007fff5b318e08  
rdx: 0x0000000000000000
  rdi: 0x0000000000000d0c  rsi: 0x0000000000000006  rbp: 0x00007fff5b318e30  
rsp: 0x00007fff5b318e08
   r8: 0x0000000000000000   r9: 0x0000000000000000  r10: 0x00007fff86ddb342  
r11: 0x0000000000000206
  r12: 0x0000000000000014  r13: 0x0000000000000001  r14: 0x0000000105276ce0  
r15: 0x0000000000000190
  rip: 0x00007fff86dd9d46  rfl: 0x0000000000000206  cr2: 0x00007fff71c9dfe8
Logical CPU: 0

Binary Images:
       0x1048d9000 -        0x104d82fe7 +gnugo (0) 
<FAD2D330-D476-3B50-82C9-768FB8E36948> /Users/USER/*/gnugo
    0x7fff644d9000 -     0x7fff6450d93f  dyld (210.2.3) 
<A40597AA-5529-3337-8C09-D8A014EB1578> /usr/lib/dyld
    0x7fff81084000 -     0x7fff8108cfff  liblaunch.dylib (442.26.2) 
<2F71CAF8-6524-329E-AC56-C506658B4C0C> /usr/lib/system/liblaunch.dylib
    0x7fff81769000 -     0x7fff8178eff7  libc++abi.dylib (24.4) 
<E7BD9363-1D25-3551-A68A-2E2FF6ABECD7> /usr/lib/libc++abi.dylib
    0x7fff81fd4000 -     0x7fff81fd6fff  libquarantine.dylib (52) 
<4BE2E642-A14F-340A-B482-5BD2AEFD9C24> /usr/lib/system/libquarantine.dylib
    0x7fff82650000 -     0x7fff82651ff7  libdnsinfo.dylib (453.18) 
<E7595861-ECF9-336E-9901-BED2620FAA80> /usr/lib/system/libdnsinfo.dylib
    0x7fff82687000 -     0x7fff82687fff  libkeymgr.dylib (25) 
<CC9E3394-BE16-397F-926B-E579B60EE429> /usr/lib/system/libkeymgr.dylib
    0x7fff83383000 -     0x7fff83389ff7  libunwind.dylib (35.1) 
<21703D36-2DAB-3D8B-8442-EAAB23C060D3> /usr/lib/system/libunwind.dylib
    0x7fff84843000 -     0x7fff84846ff7  libdyld.dylib (210.2.3) 
<F59367C9-C110-382B-A695-9035A6DD387E> /usr/lib/system/libdyld.dylib
    0x7fff84fc1000 -     0x7fff850d992f  libobjc.A.dylib (532.2) 
<90D31928-F48D-3E37-874F-220A51FD9E37> /usr/lib/libobjc.A.dylib
    0x7fff850e7000 -     0x7fff85115ff7  libsystem_m.dylib (3022.6) 
<B434BE5C-25AB-3EBD-BAA7-5304B34E3441> /usr/lib/system/libsystem_m.dylib
    0x7fff863d7000 -     0x7fff863d9ff7  libunc.dylib (25) 
<92805328-CD36-34FF-9436-571AB0485072> /usr/lib/system/libunc.dylib
    0x7fff863e3000 -     0x7fff863f1fff  libcommonCrypto.dylib (60027) 
<DA98AE56-BC3F-3AD0-9660-8CC79E4AECE6> /usr/lib/system/libcommonCrypto.dylib
    0x7fff865de000 -     0x7fff865e4fff  libmacho.dylib (829) 
<BF332AD9-E89F-387E-92A4-6E1AB74BD4D9> /usr/lib/system/libmacho.dylib
    0x7fff868ea000 -     0x7fff868effff  libcompiler_rt.dylib (30) 
<08F8731D-5961-39F1-AD00-4590321D24A9> /usr/lib/system/libcompiler_rt.dylib
    0x7fff86bfa000 -     0x7fff86c0fff7  libdispatch.dylib (228.23) 
<D26996BF-FC57-39EB-8829-F63585561E09> /usr/lib/system/libdispatch.dylib
    0x7fff86c1b000 -     0x7fff86ce7fe7  libsystem_c.dylib (825.25) 
<8CBCF9B9-EBB7-365E-A3FF-2F3850763C6B> /usr/lib/system/libsystem_c.dylib
    0x7fff86d98000 -     0x7fff86da3fff  libsystem_notify.dylib (98.5) 
<C49275CC-835A-3207-AFBA-8C01374927B6> /usr/lib/system/libsystem_notify.dylib
    0x7fff86dc8000 -     0x7fff86de3ff7  libsystem_kernel.dylib (2050.20.9) 
<EC0A9F5B-C9F5-336B-A7DD-49A718042F39> /usr/lib/system/libsystem_kernel.dylib
    0x7fff88676000 -     0x7fff88677ff7  libSystem.B.dylib (169.3) 
<132FE02E-3865-3F1F-B78D-C93D65930A67> /usr/lib/libSystem.B.dylib
    0x7fff89431000 -     0x7fff89432ff7  libsystem_sandbox.dylib (220) 
<3C3B03CF-C525-3CB3-8557-62E91B93AC95> /usr/lib/system/libsystem_sandbox.dylib
    0x7fff895af000 -     0x7fff895feff7  libcorecrypto.dylib (106.2) 
<CE0C29A3-C420-339B-ADAA-52F4683233CC> /usr/lib/system/libcorecrypto.dylib
    0x7fff895ff000 -     0x7fff89621ff7  libxpc.dylib (140.41) 
<FAC04D8B-680E-325F-8F0C-DD69859D0E01> /usr/lib/system/libxpc.dylib
    0x7fff8962d000 -     0x7fff89634fff  libcopyfile.dylib (89) 
<876573D0-E907-3566-A108-577EAD1B6182> /usr/lib/system/libcopyfile.dylib
    0x7fff89c0d000 -     0x7fff89c0eff7  libremovefile.dylib (23.1) 
<DBBFAF35-AC78-3856-92F6-6E4FD9DF14A2> /usr/lib/system/libremovefile.dylib
    0x7fff89d70000 -     0x7fff89dbcff7  libauto.dylib (185.1) 
<73CDC482-16E3-3FC7-9BB4-FBA2DA44DBC2> /usr/lib/libauto.dylib
    0x7fff89ee3000 -     0x7fff89ee8fff  libcache.dylib (57) 
<65187C6E-3FBF-3EB8-A1AA-389445E2984D> /usr/lib/system/libcache.dylib
    0x7fff8a47a000 -     0x7fff8a47bfff  libsystem_blocks.dylib (59) 
<D92DCBC3-541C-37BD-AADE-ACC75A0C59C8> /usr/lib/system/libsystem_blocks.dylib
    0x7fff8b1ce000 -     0x7fff8b204fff  libsystem_info.dylib (406.17) 
<4FFCA242-7F04-365F-87A6-D4EFB89503C1> /usr/lib/system/libsystem_info.dylib
    0x7fff8b3c6000 -     0x7fff8b3d4ff7  libsystem_network.dylib (77.10) 
<0D99F24E-56FE-380F-B81B-4A4C630EE587> /usr/lib/system/libsystem_network.dylib
    0x7fff8dadc000 -     0x7fff8db14fff  libncurses.5.4.dylib (37.3) 
<68D5B5F5-8252-3F1E-AFF1-C6AFE145DBC1> /usr/lib/libncurses.5.4.dylib
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    0x7fff8df18000 -     0x7fff8df80ff7  libc++.1.dylib (65.1) 
<20E31B90-19B9-3C2A-A9EB-474E08F9FE05> /usr/lib/libc++.1.dylib

External Modification Summary:
  Calls made by other processes targeting this process:
    task_for_pid: 1
    thread_create: 0
    thread_set_state: 0
  Calls made by this process:
    task_for_pid: 0
    thread_create: 0
    thread_set_state: 0
  Calls made by all processes on this machine:
    task_for_pid: 6093
    thread_create: 2
    thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=62.0M resident=21.5M(35%) 
swapped_out_or_unallocated=40.5M(65%)
Writable regions: Total=39.5M written=21.8M(55%) resident=22.8M(58%) 
swapped_out=0K(0%) unallocated=16.6M(42%)
 
REGION TYPE                      VIRTUAL
===========                      =======
MALLOC                             28.0M
MALLOC guard page                    16K
STACK GUARD                        56.0M
Stack                              8192K
__DATA                             5820K
__LINKEDIT                         52.7M
__TEXT                             9568K
shared memory                        12K
===========                      =======
TOTAL                             159.7M