From: Stéphane Nicolet <cassio@free.fr>
Date: Fri, 27 Jul 2018 13:46:13 +0000 (+0200)
Subject: Fix a compilation error for MSVC
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=9ca014df497de8b3fa4a1da75e8af8a567141a90;hp=e12fc10b5cf4ac1518a18a54c4e368ef2dc55bfc

Fix a compilation error for MSVC

The previous commit wouldn't compile on the Microsoft Virtual Studio C++ compiler. So use a more compatible style for the same idea (which we already use in numerous places of evaluate.cpp, for instance in line 563).

Under the Clang compiler, both versions generate exactly the same machine code (same md5 signatures for the two binaries).

No functional change.
---

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 5f4a1ab1..55ceadfd 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -636,8 +636,8 @@ namespace {
 
         assert(!(pos.pieces(Them, PAWN) & forward_file_bb(Us, s + Up)));
 
-        bb = forward_file_bb(Us, s) & pos.pieces(Them);
-        score -= HinderPassedPawn * bool(bb);
+        if (forward_file_bb(Us, s) & pos.pieces(Them))
+            score -= HinderPassedPawn;
 
         int r = relative_rank(Us, s);
         int w = PassedDanger[r];