From 5256cfc3887bb0547c05df6ea5e14e9bd2619445 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@gmail.com>
Date: Wed, 8 May 2024 16:02:46 +0300
Subject: [PATCH] GCC 4.x doesn't have std::is_trivially_copyable

---
 test/test_uuid.cpp | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/test/test_uuid.cpp b/test/test_uuid.cpp
index 700eb9dd..841548f5 100644
--- a/test/test_uuid.cpp
+++ b/test/test_uuid.cpp
@@ -14,7 +14,24 @@
 #include <boost/container_hash/hash.hpp>
 #include <boost/core/lightweight_test.hpp>
 #include <boost/current_function.hpp>
+#include <boost/config.hpp>
 #include <iostream>
+#include <type_traits>
+
+// is_trivially_copyable not present in GCC 4.x
+
+#if defined( BOOST_LIBSTDCXX_VERSION ) && BOOST_LIBSTDCXX_VERSION < 50000
+
+template<class T> struct is_trivially_copyable: std::integral_constant<bool,
+    __has_trivial_copy(T) && __has_trivial_assign(T) && __has_trivial_destructor(T)> {};
+
+#else
+
+using std::is_trivially_copyable;
+
+#endif
+
+//
 
 void test_uuid_equal_array(char const * file, int line, char const * function,
                            boost::uuids::uuid const& lhs, const unsigned char (&rhs)[16])
@@ -308,8 +325,9 @@ int main()
     }
 
     { // test type properties
+
         BOOST_TEST_EQ(std::is_pod<uuid>::value, true);
-        BOOST_TEST_EQ(std::is_trivially_copyable<uuid>::value, true);
+        BOOST_TEST_EQ(::is_trivially_copyable<uuid>::value, true);
         BOOST_TEST_EQ(std::is_standard_layout<uuid>::value, true);
     }