Fix a smal bug in Position::from_fen

[stockfish] / src / position.cpp

diff --git a/src/position.cpp b/src/position.cpp
index 45be5df3203b26a0c4fe5ffccb25468033692ba0..36db8d2b65200a9bb5e2f829d35a0ae0722ef253 100644 (file)
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -190,7 +190,7 @@ void Position::from_fen(const std::string& fen) {
       i++;
 
   // En passant square
-  if (    i < fen.length() - 2
+  if (    i <= fen.length() - 2
       && (fen[i] >= 'a' && fen[i] <= 'h')
       && (fen[i+1] == '3' || fen[i+1] == '6'))
       st->epSquare = square_from_string(fen.substr(i, 2));
@@ -1854,15 +1854,14 @@ Value Position::compute_value() const {
 Value Position::compute_non_pawn_material(Color c) const {
 
   Value result = Value(0);
-  Square s;
 
   for (PieceType pt = KNIGHT; pt <= QUEEN; pt++)
   {
       Bitboard b = pieces_of_color_and_type(c, pt);
-      while(b)
+      while (b)
       {
-          s = pop_1st_bit(&b);
-          assert(piece_on(s) == piece_of_color_and_type(c, pt));
+          assert(piece_on(first_1(b)) == piece_of_color_and_type(c, pt));
+          pop_1st_bit(&b);
           result += piece_value_midgame(pt);
       }
   }