From 0408c8c16aaee97b5566c0a1a8b29beaff9adf45 Mon Sep 17 00:00:00 2001
From: Peter Dimov <pdimov@pdimov.com>
Date: Thu, 18 Oct 2018 17:10:12 +0300
Subject: [PATCH] is_trivially_move_assignable doesn't exist in libstdc++ 4.x

---
 test/variant_valueless.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/test/variant_valueless.cpp b/test/variant_valueless.cpp
index 15dad2e..85a8b1f 100644
--- a/test/variant_valueless.cpp
+++ b/test/variant_valueless.cpp
@@ -14,6 +14,7 @@
 #include <stdexcept>
 
 using namespace boost::variant2;
+namespace v2d = boost::variant2::detail;
 
 #define STATIC_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
 
@@ -34,7 +35,7 @@ STATIC_ASSERT( std::is_nothrow_default_constructible<X1>::value );
 STATIC_ASSERT( std::is_nothrow_copy_constructible<X1>::value );
 STATIC_ASSERT( std::is_nothrow_move_constructible<X1>::value );
 STATIC_ASSERT( std::is_trivially_destructible<X1>::value );
-STATIC_ASSERT( std::is_trivially_move_assignable<X1>::value );
+STATIC_ASSERT( v2d::is_trivially_move_assignable<X1>::value );
 STATIC_ASSERT( std::is_nothrow_constructible<X1, E1>::value );
 STATIC_ASSERT( !std::is_nothrow_constructible<X1, E1x>::value );
 
@@ -83,7 +84,7 @@ STATIC_ASSERT( !std::is_nothrow_default_constructible<X3>::value );
 STATIC_ASSERT( !std::is_nothrow_copy_constructible<X3>::value );
 STATIC_ASSERT( !std::is_nothrow_move_constructible<X3>::value );
 STATIC_ASSERT( std::is_trivially_destructible<X3>::value );
-STATIC_ASSERT( std::is_trivially_move_assignable<X3>::value );
+STATIC_ASSERT( v2d::is_trivially_move_assignable<X3>::value );
 STATIC_ASSERT( std::is_nothrow_constructible<X3, E3>::value );
 STATIC_ASSERT( !std::is_nothrow_constructible<X3, E3x>::value );