1 files changed, 34 insertions, 0 deletions
diff --git a/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/mask_array.pass.cpp b/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/mask_array.pass.cpp
new file mode 100644
index 00000000000..be4f7403945
--- /dev/null
+++ b/libcxx/test/std/numerics/numarray/template.valarray/valarray.cons/mask_array.pass.cpp
@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <valarray>
+
+// template<class T> class valarray;
+
+// valarray(const mask_array<value_type>& ma);
+
+#include <valarray>
+#include <cassert>
+
+int main()
+{
+    int a1[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15};
+    const std::size_t N1 = sizeof(a1)/sizeof(a1[0]);
+    bool b[N1] = {true,  false, false, true,  true,  false,
+                  false, true,  false, false, false, true};
+    std::valarray<int> v1(a1, N1);
+    std::valarray<bool> vb(b, N1);
+    std::valarray<int> v2(v1[vb]);
+    assert(v2.size() == 5);
+    assert(v2[ 0] ==  0);
+    assert(v2[ 1] ==  3);
+    assert(v2[ 2] ==  4);
+    assert(v2[ 3] ==  7);
+    assert(v2[ 4] == 11);
+}