X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=d6af118bf36a7c6fd094a6ecf2dfd6677e59fed0;hp=f1eb71ec30e11affe1d17496f35ef47288a5a770;hb=190d2ea4bc433a0c047ede87f5d9cc241de2b1e2;hpb=c2c0e6b07de96c1fc39528b613fb3c9f93a8d7dc

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index f1eb71ec..d6af118b 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -577,6 +577,7 @@ namespace {
         Square s = pop_lsb(&b);
 
         assert(pos.pawn_passed(Us, s));
+        assert(!(pos.pieces(PAWN) & forward_bb(Us, s)));
 
         int r = relative_rank(Us, s) - RANK_2;
         int rr = r * (r - 1);