X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fposition.cpp;h=3cf0016b783c57e1070e8b8b4ad08ce9d2a067ad;hb=a8b9c11f5666a6298d684e21156f4ac9d89c8d8c;hp=646b61ea154153b26eaf4cb97f30bce408b885b0;hpb=9446dd6da335932b747c0ca2522da9970bb0956e;p=stockfish

diff --git a/src/position.cpp b/src/position.cpp
index 646b61ea..3cf0016b 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -74,23 +74,23 @@ CheckInfo::CheckInfo(const Position& pos) {
 }
 
 
-/// Position c'tors. Here we always create a slower but safer copy of
-/// the original position or the FEN string, we want the new born Position
-/// object do not depend on any external data. Instead if we know what we
-/// are doing and we need speed we can create a position with default
-/// c'tor Position() and then use just fast_copy().
+/// Position c'tors. Here we always create a copy of the original position
+/// or the FEN string, we want the new born Position object do not depend
+/// on any external data so we detach state pointer from the source one.
 
-Position::Position() {}
+Position::Position(int th) : threadID(th) {}
 
-Position::Position(const Position& pos) {
+Position::Position(const Position& pos, int th) {
 
   memcpy(this, &pos, sizeof(Position));
   detach(); // Always detach() in copy c'tor to avoid surprises
+  threadID = th;
 }
 
-Position::Position(const string& fen) {
+Position::Position(const string& fen, int th) {
 
   from_fen(fen);
+  threadID = th;
 }
 
 
@@ -340,7 +340,7 @@ void Position::print(Move m) const {
   std::cout << std::endl;
   if (m != MOVE_NONE)
   {
-      Position p(*this);
+      Position p(*this, thread());
       string col = (color_of_piece_on(move_from(m)) == BLACK ? ".." : "");
       std::cout << "Move is: " << col << move_to_san(p, m) << std::endl;
   }
@@ -819,7 +819,7 @@ void Position::do_move(Move m, StateInfo& newSt, const CheckInfo& ci, bool moveI
           set_bit(&(byTypeBB[promotion]), to);
           board[to] = piece_of_color_and_type(us, promotion);
 
-          // Update piece counts      
+          // Update piece counts
           pieceCount[us][promotion]++;
           pieceCount[us][PAWN]--;
 
@@ -1783,6 +1783,7 @@ void Position::flipped_copy(const Position& pos) {
   assert(pos.is_ok());
 
   clear();
+  threadID = pos.thread();
 
   // Board
   for (Square s = SQ_A1; s <= SQ_H8; s++)