Fix POPCNT detection gcc compile error

[stockfish] / src / position.h

diff --git a/src/position.h b/src/position.h
index e7dc3a802fca35ae821517815650dfb692db7eef..d92ed1caf4c4067f479407a31c6bc07ceba7206e 100644 (file)
--- a/src/position.h
+++ b/src/position.h
@@ -147,8 +147,8 @@ public:
 
   // Constructors
   Position();
-  Position(const Position& pos);
-  Position(const std::string& fen);
+  explicit Position(const Position& pos);
+  explicit Position(const std::string& fen);
 
   // Text input/output
   void from_fen(const std::string& fen);
@@ -224,6 +224,9 @@ public:
   bool move_is_passed_pawn_push(Move m) const;
   bool move_attacks_square(Move m, Square s) const;
 
+  // Piece captured with previous moves
+  PieceType captured_piece() const;
+
   // Information about pawns
   bool pawn_is_passed(Color c, Square s) const;
   static bool pawn_is_passed(Bitboard theirPawns, Color c, Square s);
@@ -567,4 +570,8 @@ inline bool Position::move_is_capture_or_promotion(Move m) const {
   return (m & (0x1F << 12)) ? !move_is_castle(m) : !square_is_empty(move_to(m));
 }
 
+inline PieceType Position::captured_piece() const {
+  return st->capture;
+}
+
 #endif // !defined(POSITION_H_INCLUDED)