@@ -876,6 +876,16 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
public:
void swap(tuple&) noexcept { /* no-op */ }
+ // We need the default since we're going to define no-op
+ // allocator constructors.
+ tuple() = default;
+ // No-op allocator constructors.
+ template<typename _Alloc>
+ tuple(allocator_arg_t __tag, const _Alloc& __a) { }
+ template<typename _Alloc>
+ tuple(allocator_arg_t __tag, const _Alloc& __a, const tuple& __in) { }
+ template<typename _Alloc>
+ tuple(allocator_arg_t __tag, const _Alloc& __a, tuple&& __in) { }
};
/// Partial specialization, 2-element tuple.
@@ -162,8 +162,30 @@ void test01()
}
+void test02()
+{
+ bool test __attribute__((unused)) = true;
+ using std::allocator_arg;
+ using std::tuple;
+ using std::make_tuple;
+
+ typedef tuple<> test_type;
+
+ MyAlloc a;
+
+ // default construction
+ test_type t1(allocator_arg, a);
+ // copy construction
+ test_type t2(allocator_arg, a, t1);
+ // move construction
+ test_type t3(allocator_arg, a, std::move(t1));
+ // make_tuple
+ test_type empty = make_tuple();
+}
+
int main()
{
test01();
+ test02();
return 0;
}