Scorpio EGBB Segfault

[EvgeniyZh]

For "probe_egbb_xmen" treat the kings like the other pieces. Try:

Code: Select all

case WK: ADD_PIECE(WKing); break;
case BK: ADD_PIECE(BKing); break;

oups! sorry for false alert. I just forgot to turn EGBB usage on.
There is no difference between what is done and ADD_PIECE, except that in my code white king is always first and black king is always second.

[Daniel Shawul]

For "probe_egbb_xmen" treat the kings like the other pieces. Try:

Code: Select all

case WK: ADD_PIECE(WKing); break;
case BK: ADD_PIECE(BKing); break;

oups! sorry for false alert. I just forgot to turn EGBB usage on.
There is no difference between what is done and ADD_PIECE, except that in my code white king is always first and black king is always second.

Maybe you should first try to probe with a FEN string instead? There is a function for it in egbbdll.
DLLExport int CDECL probe_egbb_fen(char* fen);

[EvgeniyZh]

For "probe_egbb_xmen" treat the kings like the other pieces. Try:

Code: Select all

case WK: ADD_PIECE(WKing); break;
case BK: ADD_PIECE(BKing); break;

oups! sorry for false alert. I just forgot to turn EGBB usage on.
There is no difference between what is done and ADD_PIECE, except that in my code white king is always first and black king is always second.

Maybe you should first try to probe with a FEN string instead? There is a function for it in egbbdll.
DLLExport int CDECL probe_egbb_fen(char* fen);

Just the same

[Daniel Shawul]

Here is a small test with python. I get a winning result for the position you provided.

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[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)] on darwin 
Type "help", "copyright", "credits" or "license" for more information. 
>>> from ctypes import * 
>>> egbb = cdll.LoadLibrary("egbbso.so") 
>>> egbb.load_egbb("./") 
EgbbProbe 4.1 by Daniel Shawul 
10 egbbs loaded !      
-1300584139 
>>> egbb.probe_egbb_fen("2R5/8/8/4k3/8/8/6K1/8 w - -") 
5609 
>>> 

Edit:
On a second test I managed to get a segfault.

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>>> from ctypes import *
>>> egbb = cdll.LoadLibrary("egbbso.so")
>>> egbb.load_egbb_xmen("./",1,1)
EgbbProbe 4.1 by Daniel Shawul
10 egbbs loaded !      
28185509
>>> egbb.probe_egbb_fen("2R5/8/8/4k3/8/8/6K1/8 w - -")
Segmentation fault: 11

The cache_size should be in bytes so changing the 1 to 4194304 for a 4MB cache fixes it.

Code: Select all

>>> from ctypes import *
>>> egbb = cdll.LoadLibrary("egbbso.so")
>>> egbb.load_egbb_xmen("./",4194304,1)
EgbbProbe 4.1 by Daniel Shawul
10 egbbs loaded !      
-2050454970
>>> egbb.probe_egbb_fen("2R5/8/8/4k3/8/8/6K1/8 w - -")
5609
>>> egbb.load_egbb_xmen("./",1,1)
EgbbProbe 4.1 by Daniel Shawul
10 egbbs loaded !      
-2050454970
>>> egbb.probe_egbb_fen("2R5/8/8/4k3/8/8/6K1/8 w - -")
5609

Also, reloading with a 1 byte cache does not cause a problem anymore. So make sure you are giving it an appropriately sized cache.

[EvgeniyZh]

Edit:
On a second test I managed to get a segfault.

The cache_size should be in bytes so changing the 1 to 4194304 for a 4MB cache fixes it.
Also, reloading with a 1 byte cache does not cause a problem anymore. So make sure you are giving it an appropriately sized cache.

Gotcha! Cache size was in megabytes. Thank you for your help