From 2af0a97e4f256bf106299c4de6b2e75027b30a36 Mon Sep 17 00:00:00 2001
From: Nikita Kniazev <nok.raven@gmail.com>
Date: Sun, 31 Mar 2019 16:07:14 +0300
Subject: [PATCH] Expand BOOST_UNREACHABLE_RETURN to __assume(0) on MSVC

---
 include/boost/config/compiler/visualc.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/boost/config/compiler/visualc.hpp b/include/boost/config/compiler/visualc.hpp
index f1674099..52cb96fc 100644
--- a/include/boost/config/compiler/visualc.hpp
+++ b/include/boost/config/compiler/visualc.hpp
@@ -43,6 +43,9 @@
 #  error "Compiler not supported or configured - please reconfigure"
 #endif
 
+// VS2005 (VC8) docs: __assume has been in Visual C++ for multiple releases
+#define BOOST_UNREACHABLE_RETURN(x) __assume(0)
+
 #if _MSC_FULL_VER < 180020827
 #  define BOOST_NO_FENV_H
 #endif