X-Git-Url: http://plrg.eecs.uci.edu/git/?p=folly.git;a=blobdiff_plain;f=folly%2FPoly.h;h=5563f0a3f8a56a2813b83d2cd76a9b6ff388b81f;hp=218fbd8950e9924ce3f6a1e926c43c9cf993f865;hb=3975849d4447642d6c476d430b8842bfd9b7b5b9;hpb=18882128de06bfc10b7137877f70f63d957db313

diff --git a/folly/Poly.h b/folly/Poly.h
index 218fbd89..5563f0a3 100644
--- a/folly/Poly.h
+++ b/folly/Poly.h
@@ -25,16 +25,20 @@
 
 #pragma once
 
+#if defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 5
+#error Folly.Poly requires gcc-5 or greater
+#endif
+
 #include <cassert>
 #include <new>
 #include <type_traits>
 #include <typeinfo>
 #include <utility>
 
-#include <folly/Assume.h>
 #include <folly/CppAttributes.h>
 #include <folly/Traits.h>
 #include <folly/detail/TypeList.h>
+#include <folly/lang/Assume.h>
 
 #if !defined(__cpp_inline_variables)
 #define FOLLY_INLINE_CONSTEXPR constexpr