2011/12/13 Bernd <prof7...@googlemail.com>:
> An unhandled exception occurred at $0806A90B :
> EAccessViolation : Access violation
> $0806A90B ADDMOVE, line 61 of chess_movegen_inc.pas
> $0806FAD2 TBOARD__PERFT, line 33 of chess_search_inc.pas
> $08066832 DOCOMMAND, line 263 of chess_interface.pas
> $08066D73 RUN, line 359 of chess_interface.pas
> $0804825D main, line 9 of fpwinglet.lpr
>
> Line 61 is:
> MoveBuffer[Index] := Move;
procedure AddMove; nostackframe;
begin
MoveBuffer[Index] := Move;
0x806a8e9 mov eax,DWORD PTR [ebp-0x4] <-- this is correct: eax := Index
0x806a8ec mov ecx,DWORD PTR [eax-0x8] <-- now what is this? makes no sense
0x806a8ef mov eax,DWORD PTR [ebp-0x4] <-- again?
0x806a8f2 mov eax,DWORD PTR [eax-0x4] <-- and again no sense?
0x806a8f5 imul eax,eax,0x14 <-- 0x14
would be SizeOf(TMove), correct.
0x806a8f8 mov edx,DWORD PTR [ebp-0x4] <-- edx := Index
0x806a8fb lea edi,[ecx+eax*1+0x50a8] <-- this cannot end well....
0x806a902 lea esi,[edx-0x4c] <-- edx is
not an address!!
0x806a905 cld
0x806a906 mov ecx,0x5
0x806a90b rep movs DWORD PTR es:[edi],DWORD PTR ds:[esi] <-- here the crach
Inc(Index);
0x806a90d mov eax,DWORD PTR [ebp-0x4]
0x806a910 inc DWORD PTR [eax-0x4]
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