From: Fabian Fichter <ianfab@users.noreply.github.com>
Date: Sun, 7 Oct 2018 13:59:18 +0000 (+0200)
Subject: Avoid overflow in bit-shift operation
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=b8af3f021ba9e9e95f510d3e6f6e19323a12ea8f;p=fairystockfish.git

Avoid overflow in bit-shift operation

Fixes error in Travis build.
---

diff --git a/src/search.cpp b/src/search.cpp
index acc23ca..4b3f817 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -608,7 +608,7 @@ namespace {
     // search to overwrite a previous full search TT value, so we use a different
     // position key in case of an excluded move.
     excludedMove = ss->excludedMove;
-    posKey = pos.key() ^ Key(excludedMove << 16); // Isn't a very good hash
+    posKey = pos.key() ^ (Key(excludedMove) << 16); // Isn't a very good hash
     tte = TT.probe(posKey, ttHit);
     ttValue = ttHit ? value_from_tt(tte->value(), ss->ply) : VALUE_NONE;
     ttMove =  rootNode ? thisThread->rootMoves[thisThread->pvIdx].pv[0]