Make tuple's constructor and std::get<>(tuple) constexpr. Final stage of fixing bug #16599. Thanks to Howard for the review and updates.

llvm-svn: 186834

1 files changed, 9 insertions, 0 deletions

diff --git a/libcxx/test/utilities/tuple/tuple.tuple/tuple.creation/make_tuple.pass.cpp b/libcxx/test/utilities/tuple/tuple.tuple/tuple.creation/make_tuple.pass.cpp
index f3dba384695..4b6649a0507 100644
--- a/libcxx/test/utilities/tuple/tuple.tuple/tuple.creation/make_tuple.pass.cpp
+++ b/libcxx/test/utilities/tuple/tuple.tuple/tuple.creation/make_tuple.pass.cpp
@@ -38,4 +38,13 @@ int main()
         assert(i == 0);
         assert(j == 0);
     }
+#if _LIBCPP_STD_VER > 11 
+    {
+    	constexpr auto t1 = std::make_tuple(0, 1, 3.14);
+        constexpr int i1 = std::get<1>(t1);
+        constexpr double d1 = std::get<2>(t1);
+        static_assert (i1 == 1, "" );
+        static_assert (d1 == 3.14, "" );
+    }
+#endif
 }