From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Fri, 12 Mar 2021 18:20:41 +0000 (+0100)
Subject: Fix castling initialization for placement chess
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=fcd3b495e4131d172583e94b8a01275a33d45e12;p=fairystockfish.git

Fix castling initialization for placement chess

Refactoring of 960 castling broke placement chess castling.
Add initialization of king position to prevent undefined behavior.
---

diff --git a/src/position.cpp b/src/position.cpp
index d9deef6..3622b30 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -1498,6 +1498,7 @@ void Position::do_move(Move m, StateInfo& newSt, bool givesCheck) {
       {
           if (type_of(pc) == castling_king_piece() && file_of(to) == castling_king_file())
           {
+              st->castlingKingSquare[us] = to;
               Bitboard castling_rooks =  pieces(us, castling_rook_piece())
                                        & rank_bb(castling_rank(us))
                                        & (file_bb(FILE_A) | file_bb(max_file()));