124     using Tup = std::tuple<int, decltype(nullptr)>;  in test_primary_template()  typedef
125     const Tup t(42, nullptr);  in test_primary_template()
128     ASSERT_SAME_TYPE(decltype(t1), Tup);  in test_primary_template()
131     using Tup = std::tuple<void*, unsigned, char>;  in test_primary_template()  typedef
132     std::tuple t1(Tup(nullptr, 42, 'a'));  in test_primary_template()
133     ASSERT_SAME_TYPE(decltype(t1), Tup);  in test_primary_template()
136     using Tup = std::tuple<int, decltype(nullptr)>;  in test_primary_template()  typedef
137     const Tup t(42, nullptr);  in test_primary_template()
140     ASSERT_SAME_TYPE(decltype(t1), Tup);  in test_primary_template()
143     using Tup = std::tuple<void*, unsigned, char>;  in test_primary_template()  typedef
144     std::tuple t1(AT, A, Tup(nullptr, 42, 'a'));  in test_primary_template()
145     ASSERT_SAME_TYPE(decltype(t1), Tup);  in test_primary_template()