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-rw-r--r--test/std/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp35
1 files changed, 35 insertions, 0 deletions
diff --git a/test/std/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp b/test/std/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp
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index 0000000000000..42a2666dd04b4
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+++ b/test/std/utilities/utility/pairs/pairs.pair/piecewise.pass.cpp
@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// template <class... Args1, class... Args2>
+// pair(piecewise_construct_t, tuple<Args1...> first_args,
+// tuple<Args2...> second_args);
+
+#include <utility>
+#include <tuple>
+#include <cassert>
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_VARIADICS
+ {
+ typedef std::pair<int, int*> P1;
+ typedef std::pair<int*, int> P2;
+ typedef std::pair<P1, P2> P3;
+ P3 p3(std::piecewise_construct, std::tuple<int, int*>(3, nullptr),
+ std::tuple<int*, int>(nullptr, 4));
+ assert(p3.first == P1(3, nullptr));
+ assert(p3.second == P2(nullptr, 4));
+ }
+#endif // _LIBCPP_HAS_NO_VARIADICS
+}