From 573c1a50275101978166dabc3cb4322465b8fd50 Mon Sep 17 00:00:00 2001
From: jzmaddock <john@johnmaddock.co.uk>
Date: Wed, 14 Jun 2017 19:42:21 +0100
Subject: [PATCH] Tentative fix for clang-3.0 failing config_test: It appears
 not to completely support variadic template expansion.

---
 include/boost/config/compiler/clang.hpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/boost/config/compiler/clang.hpp b/include/boost/config/compiler/clang.hpp
index 46ccbb68..157a94d2 100644
--- a/include/boost/config/compiler/clang.hpp
+++ b/include/boost/config/compiler/clang.hpp
@@ -310,6 +310,11 @@
 #define BOOST_UNREACHABLE_RETURN(x) __builtin_unreachable();
 #endif
 
+#if (__clang_major__ == 3) && (__clang_minor__ == 0)
+// Apparently a clang bug:
+#  define BOOST_NO_CXX11_FIXED_LENGTH_VARIADIC_TEMPLATE_EXPANSION_PACKS
+#endif
+
 // Clang has supported the 'unused' attribute since the first release.
 #define BOOST_ATTRIBUTE_UNUSED __attribute__((__unused__))