Make Square and Bitboard operators commutative

[stockfish] / src / endgame.cpp

diff --git a/src/endgame.cpp b/src/endgame.cpp
index e10f8d5da975646d236468f6dc251f0052df60bb..ca38a662a01a588d1fa11cf0eba21d2b2b156582 100644 (file)
--- a/src/endgame.cpp
+++ b/src/endgame.cpp
@@ -74,7 +74,7 @@ namespace {
     assert(pos.count<PAWN>(strongSide) == 1);
 
     if (file_of(pos.square<PAWN>(strongSide)) >= FILE_E)
     assert(pos.count<PAWN>(strongSide) == 1);
 
     if (file_of(pos.square<PAWN>(strongSide)) >= FILE_E)

-        sq = Square(sq ^ 7); // Mirror SQ_H1 -> SQ_A1
+        sq = Square(int(sq) ^ 7); // Mirror SQ_H1 -> SQ_A1

 
     return strongSide == WHITE ? sq : ~sq;
   }
 
     return strongSide == WHITE ? sq : ~sq;
   }