Author: Scott Gasch
Date: 13:07:43 12/31/01
Go up one level in this thread
On December 31, 2001 at 16:03:36, Scott Gasch wrote:
>On December 31, 2001 at 15:57:28, Bruce Moreland wrote:
>
>>
>>How many elements are in "iRanks"? If the answer is 8, there is your bug.
>>
>>In Pascal, arrays are usually 1..N. In C, they are typically 0..N-1. Your
>>asserts indicate that you may be thinking in Pascal.
>>
>>I have more ideas once you indicate that there are more than 8 things in that
>>array.
>>
>
>typedef struct _PAWN_HASH_ENTRY
>{
>INT64 i64Sig;
> short iWhiteValue;
> short iBlackValue;
> unsigned char iFiles[2][10];
> unsigned char iRanks[2][10];
> unsigned char iPawnsOnWhiteSquares[2];
> unsigned char iUnmovedPawns[2];
> unsigned char iRammedPawns[2];
> unsigned char iBackwardPawns[2];
> unsigned char cPassed[2][10];
> unsigned char iPasserInfo[2][10];
> unsigned char iPassedCount[2];
>#ifdef PARANOID
> POSITION pos;
>#endif
>} PAWN_HASH_ENTRY;
Darnit, I have a bad habit of submitting early by pressing [tab][space] by
accident when typing code.
iFiles and iRanks are arrays with 10 elements -- the 0th and 9th are phantom
files so I don't have to check for "off the board" in my code. iFiles is the
count of how many pawns are on that file and iRanks is the rank of the most
advanced one. If there's no black pawn on a rank, iRanks[BLACK][file] is set to
zero for passer detection. Likewise no white pawn on a rank means
iRanks[WHITE][file] is set to 9.
I'll all ears for other ideas. This is driving me nuts. It has to be some
problem in my code but I sure don't see it. I've verified I'm not trashing
anything on the stack by writing to a stack array out of bounds -- which might
cause whatever address it's trying to load into esi just before the crash to be
wrong.
Thanks for the ideas.
Scott
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