From 16fd3ae650607f677ff347e88c502d453cbfd099 Mon Sep 17 00:00:00 2001
From: "Daniel J. Hofmann" <daniel@trvx.org>
Date: Tue, 2 Feb 2016 15:09:32 +0100
Subject: [PATCH] Ifdef is_trivially_copyable<T> behind gcc >= 5 guard

---
 include/engine/object_encoder.hpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/engine/object_encoder.hpp b/include/engine/object_encoder.hpp
index 496e8eadb39..94784de25a7 100644
--- a/include/engine/object_encoder.hpp
+++ b/include/engine/object_encoder.hpp
@@ -39,7 +39,9 @@ using BinaryFromBase64 = boost::archive::iterators::transform_width<
 
 template <typename T> std::string encodeBase64(const T &x)
 {
-    // static_assert(std::is_trivially_copyable<T>::value, "requires a trivially copyable type");
+#if not defined __GNUC__ or __GNUC__ > 4
+    static_assert(std::is_trivially_copyable<T>::value, "requires a trivially copyable type");
+#endif
 
     std::vector<unsigned char> bytes{reinterpret_cast<const char *>(&x),
                                      reinterpret_cast<const char *>(&x) + sizeof(T)};
@@ -65,7 +67,9 @@ template <typename T> std::string encodeBase64(const T &x)
 
 template <typename T> T decodeBase64(std::string encoded)
 {
-    // static_assert(std::is_trivially_copyable<T>::value, "requires a trivially copyable type");
+#if not defined __GNUC__ or __GNUC__ > 4
+    static_assert(std::is_trivially_copyable<T>::value, "requires a trivially copyable type");
+#endif
 
     std::replace(begin(encoded), end(encoded), '-', '+');
     std::replace(begin(encoded), end(encoded), '_', '/');