From 7b4828b68ced7e92a3399f9e48da8726b6b315f0 Mon Sep 17 00:00:00 2001
From: Gary Linscott <glinscott@gmail.com>
Date: Thu, 11 Dec 2014 14:56:24 -0500
Subject: [PATCH 1/1] Only use _ReadWriteBarrier on MSVC

It was causing compile errors when cross-compiling using mingw.

No functional change.
---
 src/syzygy/tbprobe.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/syzygy/tbprobe.cpp b/src/syzygy/tbprobe.cpp
index ebbe32c4..0abd2b2e 100644
--- a/src/syzygy/tbprobe.cpp
+++ b/src/syzygy/tbprobe.cpp
@@ -146,8 +146,8 @@ static int probe_wdl_table(Position& pos, int *success)
         return 0;
       }
       // Memory barrier to ensure ptr->ready = 1 is not reordered.
-#ifdef _WIN32
-	  _ReadWriteBarrier();
+#ifdef _MSC_VER
+      _ReadWriteBarrier();
 #else
       __asm__ __volatile__ ("" ::: "memory");
 #endif
-- 
2.39.2