diff --git a/include/dynarray b/include/dynarray
new file mode 100644
index 00000000..b0d04f91
--- /dev/null
+++ b/include/dynarray
@@ -0,0 +1,311 @@
+// -*- C++ -*-
+//===-------------------------- dynarray ----------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_DYNARRAY
+#define _LIBCPP_DYNARRAY
+
+#include <__config>
+#if _LIBCPP_STD_VER > 11
+
+/*
+    dynarray synopsis
+
+namespace std {
+
+template< typename T >
+class dynarray
+{
+    // types:
+    typedef       T                               value_type;
+    typedef       T&                              reference;
+    typedef const T&                              const_reference;
+    typedef       T*                              pointer;
+    typedef const T*                              const_pointer;
+    typedef       implementation-defined          iterator;
+    typedef       implementation-defined          const_iterator;
+    typedef reverse_iterator<iterator>            reverse_iterator;
+    typedef reverse_iterator<const_iterator>      const_reverse_iterator;
+    typedef size_t                                size_type;
+    typedef ptrdiff_t                             difference_type;
+
+public:
+    // construct/copy/destroy:
+    explicit dynarray(size_type c);
+    template <typename Alloc>
+      dynarray(size_type c, const Alloc& alloc);
+    dynarray(size_type c, const T& v);
+    template <typename Alloc>
+      dynarray(size_type c, const T& v, const Alloc& alloc);
+    dynarray(const dynarray& d);
+    template <typename Alloc>
+      dynarray(const dynarray& d, const Alloc& alloc);
+    dynarray(initializer_list<T>);
+    template <typename Alloc>
+      dynarray(initializer_list<T>, const Alloc& alloc);
+
+    dynarray& operator=(const dynarray&) = delete;
+    ~dynarray();
+
+    // iterators:
+    iterator       begin()        noexcept;
+    const_iterator begin()  const noexcept;
+    const_iterator cbegin() const noexcept;
+    iterator       end()          noexcept;
+    const_iterator end()    const noexcept;
+    const_iterator cend()   const noexcept;
+
+    reverse_iterator       rbegin()        noexcept;
+    const_reverse_iterator rbegin()  const noexcept;
+    const_reverse_iterator crbegin() const noexcept;
+    reverse_iterator       rend()          noexcept;
+    const_reverse_iterator rend()    const noexcept;
+    const_reverse_iterator crend()   const noexcept;
+
+    // capacity:
+    size_type size()     const noexcept;
+    size_type max_size() const noexcept;
+    bool      empty()    const noexcept;
+
+    // element access:
+    reference       operator[](size_type n);
+    const_reference operator[](size_type n) const;
+
+    reference       front();
+    const_reference front() const;
+    reference       back();
+    const_reference back()  const;
+
+    const_reference at(size_type n) const;
+    reference       at(size_type n);
+
+    // data access:
+    T*       data()       noexcept;
+    const T* data() const noexcept;
+
+    // mutating member functions:
+    void fill(const T& v);
+};
+
+}  // std
+
+*/
+
+#include <__functional_base>
+#include <iterator>
+#include <stdexcept>
+#include <initializer_list>
+#include <new>
+#include <algorithm>
+
+#if defined(_LIBCPP_NO_EXCEPTIONS)
+    #include <cassert>
+#endif
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+template <class _Tp>
+struct _LIBCPP_TYPE_VIS_ONLY dynarray
+{
+public:
+    // types:
+    typedef dynarray __self;
+    typedef _Tp                                   value_type;
+    typedef value_type&                           reference;
+    typedef const value_type&                     const_reference;
+    typedef value_type*                           iterator;
+    typedef const value_type*                     const_iterator;
+    typedef value_type*                           pointer;
+    typedef const value_type*                     const_pointer;
+    typedef size_t                                size_type;
+    typedef ptrdiff_t                             difference_type;
+    typedef std::reverse_iterator<iterator>       reverse_iterator;
+    typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
+
+private:
+    size_t                  __size_;
+    value_type *            __base_;
+    _LIBCPP_ALWAYS_INLINE dynarray () noexcept : __base_(nullptr), __size_(0) {}
+    
+    static inline _LIBCPP_INLINE_VISIBILITY value_type* __allocate ( size_t count )
+    {
+        if ( numeric_limits<size_t>::max() / sizeof (value_type) <= count )
+        {
+#ifndef _LIBCPP_NO_EXCEPTIONS
+            throw bad_array_length();
+#else
+            assert(!"dynarray::allocation");
+#endif
+        }
+        return static_cast<value_type *> (::operator new (sizeof(value_type) * count));
+    }
+
+    static inline _LIBCPP_INLINE_VISIBILITY void __deallocate ( value_type* __ptr ) noexcept
+    {
+        ::operator delete (static_cast<void *> (__ptr));
+    }
+
+public:
+
+    explicit dynarray(size_type __c);
+    dynarray(size_type __c, const value_type& __v);
+    dynarray(const dynarray& __d);
+    dynarray(initializer_list<value_type>);
+
+//  We're not implementing these right now.
+//  Waiting for the resolution of LWG issue #2235
+//     template <typename _Alloc>
+//       dynarray(size_type __c, const _Alloc& __alloc);
+//     template <typename _Alloc>
+//       dynarray(size_type __c, const value_type& __v, const _Alloc& __alloc);
+//     template <typename _Alloc>
+//       dynarray(const dynarray& __d, const _Alloc& __alloc);
+//     template <typename _Alloc>
+//       dynarray(initializer_list<value_type>, const _Alloc& __alloc);
+
+    dynarray& operator=(const dynarray&) = delete;
+    ~dynarray();
+
+    // iterators:
+    inline _LIBCPP_INLINE_VISIBILITY iterator       begin()        noexcept { return iterator(data()); }
+    inline _LIBCPP_INLINE_VISIBILITY const_iterator begin()  const noexcept { return const_iterator(data()); }
+    inline _LIBCPP_INLINE_VISIBILITY const_iterator cbegin() const noexcept { return const_iterator(data()); }
+    inline _LIBCPP_INLINE_VISIBILITY iterator       end()          noexcept { return iterator(data() + __size_); }
+    inline _LIBCPP_INLINE_VISIBILITY const_iterator end()    const noexcept { return const_iterator(data() + __size_); }
+    inline _LIBCPP_INLINE_VISIBILITY const_iterator cend()   const noexcept { return const_iterator(data() + __size_); }
+
+    inline _LIBCPP_INLINE_VISIBILITY reverse_iterator       rbegin()        noexcept { return reverse_iterator(end()); }
+    inline _LIBCPP_INLINE_VISIBILITY const_reverse_iterator rbegin()  const noexcept { return const_reverse_iterator(end()); }
+    inline _LIBCPP_INLINE_VISIBILITY const_reverse_iterator crbegin() const noexcept { return const_reverse_iterator(end()); }
+    inline _LIBCPP_INLINE_VISIBILITY reverse_iterator       rend()          noexcept { return reverse_iterator(begin()); }
+    inline _LIBCPP_INLINE_VISIBILITY const_reverse_iterator rend()    const noexcept { return const_reverse_iterator(begin()); }
+    inline _LIBCPP_INLINE_VISIBILITY const_reverse_iterator crend()   const noexcept { return const_reverse_iterator(begin()); }
+
+    // capacity:
+    inline _LIBCPP_INLINE_VISIBILITY size_type size()     const noexcept { return __size_; }
+    inline _LIBCPP_INLINE_VISIBILITY size_type max_size() const noexcept { return __size_; }
+    inline _LIBCPP_INLINE_VISIBILITY bool      empty()    const noexcept { return __size_ == 0; }
+
+    // element access:
+    inline _LIBCPP_INLINE_VISIBILITY reference       operator[](size_type __n)       { return data()[__n]; }
+    inline _LIBCPP_INLINE_VISIBILITY const_reference operator[](size_type __n) const { return data()[__n]; }
+
+    inline _LIBCPP_INLINE_VISIBILITY reference       front()       { return data()[0]; }
+    inline _LIBCPP_INLINE_VISIBILITY const_reference front() const { return data()[0]; }
+    inline _LIBCPP_INLINE_VISIBILITY reference       back()        { return data()[__size_-1]; }
+    inline _LIBCPP_INLINE_VISIBILITY const_reference back()  const { return data()[__size_-1]; }
+
+    inline _LIBCPP_INLINE_VISIBILITY const_reference at(size_type __n) const;
+    inline _LIBCPP_INLINE_VISIBILITY reference       at(size_type __n);
+
+    // data access:
+    inline _LIBCPP_INLINE_VISIBILITY _Tp*       data()       noexcept { return __base_; }
+    inline _LIBCPP_INLINE_VISIBILITY const _Tp* data() const noexcept { return __base_; }
+
+    // mutating member functions:
+    inline _LIBCPP_INLINE_VISIBILITY void fill(const value_type& __v) { fill_n(begin(), __size_, __v); }
+};
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+dynarray<_Tp>::dynarray(size_type __c) : dynarray ()
+{
+    __base_ = __allocate (__c);
+    value_type *__data = data ();
+    for ( __size_ = 0; __size_ < __c; ++__size_, ++__data )
+        ::new (__data) value_type;
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+dynarray<_Tp>::dynarray(size_type __c, const value_type& __v) : dynarray ()
+{
+    __base_ = __allocate (__c);
+    value_type *__data = data ();
+    for ( __size_ = 0; __size_ < __c; ++__size_, ++__data )
+        ::new (__data) value_type (__v);
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+dynarray<_Tp>::dynarray(initializer_list<value_type> __il) : dynarray ()
+{
+    size_t sz = __il.size();
+    __base_ = __allocate (sz);
+    value_type *__data = data ();
+    auto src = __il.begin();
+    for ( __size_ = 0; __size_ < sz; ++__size_, ++__data, ++src )
+        ::new (__data) value_type (*src);
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+dynarray<_Tp>::dynarray(const dynarray& __d) : dynarray ()
+{
+    size_t sz = __d.size();
+    __base_ = __allocate (sz);
+    value_type *__data = data ();
+    auto src = __d.begin();
+    for ( __size_ = 0; __size_ < sz; ++__size_, ++__data, ++src )
+        ::new (__data) value_type (*src);
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+dynarray<_Tp>::~dynarray()
+{ 
+    value_type *__data = data () + __size_;
+    for ( size_t i = 0; i < __size_; ++i )
+        (--__data)->value_type::~value_type();
+    __deallocate ( __base_ );
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+typename dynarray<_Tp>::reference
+dynarray<_Tp>::at(size_type __n)
+{
+    if (__n >= __size_)
+    {
+#ifndef _LIBCPP_NO_EXCEPTIONS
+        throw out_of_range("dynarray::at");
+#else
+        assert(!"dynarray::at out_of_range");
+#endif
+    }
+    return data()[__n];
+}
+
+template <class _Tp>
+inline _LIBCPP_INLINE_VISIBILITY
+typename dynarray<_Tp>::const_reference
+dynarray<_Tp>::at(size_type __n) const
+{
+    if (__n >= __size_)
+    {
+#ifndef _LIBCPP_NO_EXCEPTIONS
+        throw out_of_range("dynarray::at");
+#else
+        assert(!"dynarray::at out_of_range");
+#endif
+    }
+    return data()[__n];
+}
+
+template <class _Tp, class _Alloc>
+struct _LIBCPP_TYPE_VIS_ONLY uses_allocator<dynarray<_Tp>, _Alloc> : true_type {};
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif  // if _LIBCPP_STD_VER > 11 
+#endif  // _LIBCPP_DYNARRAY
diff --git a/test/containers/sequences/dynarray/dynarray.cons/alloc.pass.cpp b/test/containers/sequences/dynarray/dynarray.cons/alloc.pass.cpp
new file mode 100644
index 00000000..cf8843d3
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.cons/alloc.pass.cpp
@@ -0,0 +1,84 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.cons
+
+// template <class Alloc>
+//   dynarray(size_type c, const Alloc& alloc);
+// template <class Alloc>
+//   dynarray(size_type c, const T& v, const Alloc& alloc);
+// template <class Alloc>
+//   dynarray(const dynarray& d, const Alloc& alloc);
+// template <class Alloc>
+//   dynarray(initializer_list<T>, const Alloc& alloc);
+
+// ~dynarray();
+
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+#include "../../../test_allocator.h"
+
+template <class T, class Allocator>
+void check_allocator ( const std::dynarray<T> &dyn, const Allocator &alloc ) {
+    for ( int i = 0; i < dyn.size (); ++i )
+        assert ( dyn[i].get_allocator() == alloc );
+}
+
+template <class T, class Allocator>
+void test ( const std::initializer_list<T> &vals, const Allocator &alloc ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( vals, alloc );
+    assert ( d1.size () == vals.size() );
+    assert ( std::equal ( vals.begin (), vals.end (), d1.begin (), d1.end ()));
+    check_allocator ( d1, alloc );
+    }
+
+
+template <class T, class Allocator>
+void test ( const T &val, const Allocator &alloc1, const Allocator &alloc2 ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( 4, alloc1 );
+    assert ( d1.size () == 4 );
+    assert ( std::all_of ( d1.begin (), d1.end (), []( const T &item ){ return item == T(); } ));
+    check_allocator ( d1, alloc1 );
+
+    dynA d2 ( 7, val, alloc1 );
+    assert ( d2.size () == 7 );
+    assert ( std::all_of ( d2.begin (), d2.end (), [&val]( const T &item ){ return item == val; } ));
+    check_allocator ( d2, alloc1 );
+
+    dynA d3 ( d2, alloc2 );
+    assert ( d3.size () == 7 );
+    assert ( std::all_of ( d3.begin (), d3.end (), [&val]( const T &item ){ return item == val; } ));   
+    check_allocator ( d3, alloc2 );
+    }
+
+int main()
+{
+//  This test is waiting on the resolution of LWG issue #2235 
+//     typedef test_allocator<char> Alloc;
+//     typedef std::basic_string<char, std::char_traits<char>, Alloc> nstr;
+// 
+//     test ( nstr("fourteen"), Alloc(3), Alloc(4) );
+//     test ( { nstr("1"), nstr("1"), nstr("2"), nstr("3"), nstr("5"), nstr("8")}, Alloc(6));
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.cons/default.pass.cpp b/test/containers/sequences/dynarray/dynarray.cons/default.pass.cpp
new file mode 100644
index 00000000..db93f212
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.cons/default.pass.cpp
@@ -0,0 +1,93 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.cons
+
+// explicit dynarray(size_type c);
+// dynarray(size_type c, const T& v);
+// dynarray(initializer_list<T>);
+// dynarray(const dynarray& d);
+
+// ~dynarray();
+
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+
+template <class T>
+void test ( const std::initializer_list<T> &vals ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( vals );
+    assert ( d1.size () == vals.size() );
+    assert ( std::equal ( vals.begin (), vals.end (), d1.begin (), d1.end ()));
+    }
+
+
+template <class T>
+void test ( const T &val ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( 4 );
+    assert ( d1.size () == 4 );
+    assert ( std::all_of ( d1.begin (), d1.end (), []( const T &item ){ return item == T(); } ));
+
+    dynA d2 ( 7, val );
+    assert ( d2.size () == 7 );
+    assert ( std::all_of ( d2.begin (), d2.end (), [&val]( const T &item ){ return item == val; } ));
+
+    dynA d3 ( d2 );
+    assert ( d3.size () == 7 );
+    assert ( std::all_of ( d3.begin (), d3.end (), [&val]( const T &item ){ return item == val; } ));   
+    }
+
+void test_bad_length () {
+    try { std::dynarray<int> ( std::numeric_limits<size_t>::max() / sizeof ( int ) + 1 ); }
+    catch ( std::bad_array_length & ) { return ; }
+    assert ( false );
+    }
+
+void test_bad_alloc () {
+    try { std::dynarray<int> ( std::numeric_limits<size_t>::max() / sizeof ( int ) - 1 ); }
+    catch ( std::bad_alloc & ) { return ; }
+    assert ( false );
+    }
+
+int main()
+{
+//  test<int> ( 14 );       // ints don't get default initialized
+    test<long> ( 0 );
+    test<double> ( 14.0 );
+    test<std::complex<double>> ( std::complex<double> ( 14, 0 ));
+    test<std::string> ( "fourteen" );
+    
+    test ( { 1, 1, 2, 3, 5, 8 } );
+    test ( { 1., 1., 2., 3., 5., 8. } );
+    test ( { std::string("1"), std::string("1"), std::string("2"), std::string("3"), 
+                std::string("5"), std::string("8")} );
+    
+//  Make sure we don't pick up the Allocator version here
+    std::dynarray<long> d1 ( 20, 3 );
+    assert ( d1.size() == 20 );
+    assert ( std::all_of ( d1.begin (), d1.end (), []( long item ){ return item == 3L; } ));
+
+    test_bad_length ();
+    test_bad_alloc ();
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.data/default.pass.cpp b/test/containers/sequences/dynarray/dynarray.data/default.pass.cpp
new file mode 100644
index 00000000..66c0fc56
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.data/default.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.data
+
+// T* data() noexcept;
+// const T* data() const noexcept;
+
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+
+
+template <class T>
+void dyn_test_const ( const std::dynarray<T> &dyn ) {
+    const T *data = dyn.data ();
+    assert ( data != NULL );
+    assert ( std::equal ( dyn.begin(), dyn.end(), data ));
+    }
+
+template <class T>
+void dyn_test ( std::dynarray<T> &dyn ) {
+    T *data = dyn.data ();
+    assert ( data != NULL );
+    assert ( std::equal ( dyn.begin(), dyn.end(), data ));
+    }
+
+    
+
+template <class T>
+void test ( const T &val ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( 4 );
+    dyn_test ( d1 );
+    dyn_test_const ( d1 );
+    
+    dynA d2 ( 7, val );
+    dyn_test ( d2 );
+    dyn_test_const ( d2 );
+    }
+
+int main()
+{
+    test<int> ( 14 );
+    test<double> ( 14.0 );
+    test<std::complex<double>> ( std::complex<double> ( 14, 0 ));
+    test<std::string> ( "fourteen" );
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.mutate/default.pass.cpp b/test/containers/sequences/dynarray/dynarray.mutate/default.pass.cpp
new file mode 100644
index 00000000..57773414
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.mutate/default.pass.cpp
@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.data
+
+// void fill(const T& v);
+// const T* data() const noexcept;
+
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+
+
+template <class T>
+void test ( const T &val ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( 4 );
+    d1.fill ( val );
+    assert ( std::all_of ( d1.begin (), d1.end (), 
+                    [&val]( const T &item ){ return item == val; } ));  
+    }
+
+int main()
+{
+    test<int> ( 14 );
+    test<double> ( 14.0 );
+    test<std::complex<double>> ( std::complex<double> ( 14, 0 ));
+    test<std::string> ( "fourteen" );
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.overview/at.pass.cpp b/test/containers/sequences/dynarray/dynarray.overview/at.pass.cpp
new file mode 100644
index 00000000..dca4ff80
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.overview/at.pass.cpp
@@ -0,0 +1,92 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.overview
+
+// const_reference at(size_type n) const;
+//       reference at(size_type n);
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+
+template <class T>
+void dyn_at_fail ( std::dynarray<T> &dyn, size_t sz ) {
+    try { dyn.at (sz); }
+    catch (const std::out_of_range &) { return; }
+    assert ( false );
+    }
+
+template <class T>
+void dyn_at_fail_const ( const std::dynarray<T> &dyn, size_t sz ) {
+    try { dyn.at (sz); }
+    catch (const std::out_of_range &) { return; }
+    assert ( false );
+    }
+
+
+template <class T>
+void dyn_test_const ( const std::dynarray<T> &dyn, const std::initializer_list<T> &vals ) {
+    const T *data = dyn.data ();
+    auto it = vals.begin ();
+    for ( size_t i = 0; i < dyn.size(); ++i, ++it ) {
+        assert ( data + i == &dyn.at(i));
+        assert ( *it == dyn.at(i));
+        }
+
+    dyn_at_fail_const ( dyn, dyn.size ());
+    dyn_at_fail_const ( dyn, 2*dyn.size ());
+    dyn_at_fail_const ( dyn, size_t (-1));
+    }
+
+template <class T>
+void dyn_test ( std::dynarray<T> &dyn, const std::initializer_list<T> &vals ) {
+    T *data = dyn.data ();
+    auto it = vals.begin ();
+    for ( size_t i = 0; i < dyn.size(); ++i, ++it ) {
+        assert ( data + i == &dyn.at(i));
+        assert ( *it == dyn.at(i));
+        }
+
+    dyn_at_fail ( dyn, dyn.size ());
+    dyn_at_fail ( dyn, 2*dyn.size ());
+    dyn_at_fail ( dyn, size_t (-1));
+    }
+
+
+template <class T>
+void test ( std::initializer_list<T> vals ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( vals );
+    dyn_test ( d1, vals );
+    dyn_test_const ( d1, vals );
+    }
+
+int main()
+{
+    test ( { 1, 1, 2, 3, 5, 8 } );
+    test ( { 1., 1., 2., 3., 5., 8. } );
+    test ( { std::string("1"), std::string("1"), std::string("2"), std::string("3"), 
+                std::string("5"), std::string("8")} );
+
+    test<int> ( {} );
+    test<std::complex<double>> ( {} );
+    test<std::string> ( {} );
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.overview/begin_end.pass.cpp b/test/containers/sequences/dynarray/dynarray.overview/begin_end.pass.cpp
new file mode 100644
index 00000000..6bca0417
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.overview/begin_end.pass.cpp
@@ -0,0 +1,106 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.overview
+
+
+// iterator       begin()        noexcept;
+// const_iterator begin()  const noexcept;
+// const_iterator cbegin() const noexcept;
+// iterator       end()          noexcept;
+// const_iterator end()    const noexcept;
+// const_iterator cend()   const noexcept;
+// 
+// reverse_iterator       rbegin()        noexcept;
+// const_reverse_iterator rbegin()  const noexcept;
+// const_reverse_iterator crbegin() const noexcept;
+// reverse_iterator       rend()          noexcept;
+// const_reverse_iterator rend()    const noexcept;
+// const_reverse_iterator crend()   const noexcept;
+
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+
+template <class T>
+void dyn_test_const ( const std::dynarray<T> &dyn ) {
+    const T *data = dyn.data ();
+    assert ( data == &*dyn.begin ());
+    assert ( data == &*dyn.cbegin ());
+
+    assert ( data + dyn.size() - 1 == &*dyn.rbegin ());
+    assert ( data + dyn.size() - 1 == &*dyn.crbegin ());
+
+    assert ( dyn.size () == std::distance ( dyn.begin(), dyn.end()));
+    assert ( dyn.size () == std::distance ( dyn.cbegin(), dyn.cend()));
+    assert ( dyn.size () == std::distance ( dyn.rbegin(), dyn.rend()));
+    assert ( dyn.size () == std::distance ( dyn.crbegin(), dyn.crend()));
+
+    assert (   dyn.begin ()  ==   dyn.cbegin ());
+    assert ( &*dyn.begin ()  == &*dyn.cbegin ());
+    assert (   dyn.rbegin () ==   dyn.crbegin ());
+    assert ( &*dyn.rbegin () == &*dyn.crbegin ());
+    assert (   dyn.end ()    ==   dyn.cend ());
+    assert (   dyn.rend ()   ==   dyn.crend ());
+    }
+
+template <class T>
+void dyn_test ( std::dynarray<T> &dyn ) {
+    T *data = dyn.data ();
+    assert ( data == &*dyn.begin ());
+    assert ( data == &*dyn.cbegin ());
+
+    assert ( data + dyn.size() - 1 == &*dyn.rbegin ());
+    assert ( data + dyn.size() - 1 == &*dyn.crbegin ());
+
+    assert ( dyn.size () == std::distance ( dyn.begin(), dyn.end()));
+    assert ( dyn.size () == std::distance ( dyn.cbegin(), dyn.cend()));
+    assert ( dyn.size () == std::distance ( dyn.rbegin(), dyn.rend()));
+    assert ( dyn.size () == std::distance ( dyn.crbegin(), dyn.crend()));
+
+    assert (   dyn.begin ()  ==   dyn.cbegin ());
+    assert ( &*dyn.begin ()  == &*dyn.cbegin ());
+    assert (   dyn.rbegin () ==   dyn.crbegin ());
+    assert ( &*dyn.rbegin () == &*dyn.crbegin ());
+    assert (   dyn.end ()    ==   dyn.cend ());
+    assert (   dyn.rend ()   ==   dyn.crend ());
+    }
+
+
+template <class T>
+void test ( const T &val ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( 4 );
+    dyn_test ( d1 );
+    dyn_test_const ( d1 );
+    
+    dynA d2 ( 7, val );
+    dyn_test ( d2 );
+    dyn_test_const ( d2 );
+    }
+
+int main()
+{
+    test<int> ( 14 );
+    test<double> ( 14.0 );
+    test<std::complex<double>> ( std::complex<double> ( 14, 0 ));
+    test<std::string> ( "fourteen" );
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.overview/capacity.pass.cpp b/test/containers/sequences/dynarray/dynarray.overview/capacity.pass.cpp
new file mode 100644
index 00000000..acea76b8
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.overview/capacity.pass.cpp
@@ -0,0 +1,55 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.overview
+
+// size_type size()     const noexcept;
+// size_type max_size() const noexcept;
+// bool      empty()    const noexcept;  
+
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+
+template <class T>
+void dyn_test ( const std::dynarray<T> &dyn, size_t sz ) {
+    assert ( dyn.size ()     == sz );
+    assert ( dyn.max_size () == sz );
+    assert ( dyn.empty () == ( sz == 0 ));
+    }
+
+template <class T>
+void test ( std::initializer_list<T> vals ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( vals );
+    dyn_test ( d1, vals.size ());
+    }
+
+int main()
+{
+    test ( { 1, 1, 2, 3, 5, 8 } );
+    test ( { 1., 1., 2., 3., 5., 8. } );
+    test ( { std::string("1"), std::string("1"), std::string("2"), std::string("3"), 
+                std::string("5"), std::string("8")} );
+
+    test<int> ( {} );
+    test<std::complex<double>> ( {} );
+    test<std::string> ( {} );
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.overview/front_back.pass.cpp b/test/containers/sequences/dynarray/dynarray.overview/front_back.pass.cpp
new file mode 100644
index 00000000..5cf3d20d
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.overview/front_back.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.overview
+
+// reference       front();
+// const_reference front() const;
+// reference       back();
+// const_reference back()  const;
+
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+
+template <class T>
+void dyn_test_const ( const std::dynarray<T> &dyn ) {
+    const T *data = dyn.data ();
+    assert ( *data == dyn.front ());
+    assert ( *(data + dyn.size() - 1 ) == dyn.back ());
+    }
+
+template <class T>
+void dyn_test ( std::dynarray<T> &dyn ) {
+    T *data = dyn.data ();
+    assert ( *data == dyn.front ());
+    assert ( *(data + dyn.size() - 1 ) == dyn.back ());
+    }
+
+
+template <class T>
+void test ( const T &val ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( 4 );
+    dyn_test ( d1 );
+    dyn_test_const ( d1 );
+    
+    dynA d2 ( 7, val );
+    dyn_test ( d2 );
+    dyn_test_const ( d2 );
+    }
+
+int main()
+{
+    test<int> ( 14 );
+    test<double> ( 14.0 );
+    test<std::complex<double>> ( std::complex<double> ( 14, 0 ));
+    test<std::string> ( "fourteen" );
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.overview/indexing.pass.cpp b/test/containers/sequences/dynarray/dynarray.overview/indexing.pass.cpp
new file mode 100644
index 00000000..a396fbcd
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.overview/indexing.pass.cpp
@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.overview
+
+// const_reference at(size_type n) const;
+//       reference at(size_type n);
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+
+template <class T>
+void dyn_test_const ( const std::dynarray<T> &dyn, const std::initializer_list<T> &vals ) {
+    const T *data = dyn.data ();
+    auto it = vals.begin ();
+    for ( size_t i = 0; i < dyn.size(); ++i, ++it ) {
+        assert ( data + i == &dyn[i]);
+        assert ( *it == dyn[i]);
+        }
+    }
+
+template <class T>
+void dyn_test ( std::dynarray<T> &dyn, const std::initializer_list<T> &vals ) {
+    T *data = dyn.data ();
+    auto it = vals.begin ();
+    for ( size_t i = 0; i < dyn.size(); ++i, ++it ) {
+        assert ( data + i == &dyn[i]);
+        assert ( *it == dyn[i]);
+        }
+    }
+
+
+template <class T>
+void test ( std::initializer_list<T> vals ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( vals );
+    dyn_test ( d1, vals );
+    dyn_test_const ( d1, vals );
+    }
+
+int main()
+{
+    test ( { 1, 1, 2, 3, 5, 8 } );
+    test ( { 1., 1., 2., 3., 5., 8. } );
+    test ( { std::string("1"), std::string("1"), std::string("2"), std::string("3"), 
+                std::string("5"), std::string("8")} );
+
+    test<int> ( {} );
+    test<std::complex<double>> ( {} );
+    test<std::string> ( {} );
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.traits/default.pass.cpp b/test/containers/sequences/dynarray/dynarray.traits/default.pass.cpp
new file mode 100644
index 00000000..baf551ee
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.traits/default.pass.cpp
@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.data
+
+// template <class Type, class Alloc>
+//   struct uses_allocator<dynarray<Type>, Alloc> : true_type { };
+
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include "../../../test_allocator.h"
+
+int main()
+{
+    static_assert ( std::uses_allocator<std::dynarray<int>, test_allocator<int>>::value, "" );
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/dynarray.zero/default.pass.cpp b/test/containers/sequences/dynarray/dynarray.zero/default.pass.cpp
new file mode 100644
index 00000000..1d94d487
--- /dev/null
+++ b/test/containers/sequences/dynarray/dynarray.zero/default.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// dynarray.zero
+
+// dynarray shall provide support for the special case of construction with a size of zero.
+// In the case that the size is zero, begin() == end() == unique value. 
+// The return value of data() is unspecified. 
+// The effect of calling front() or back() for a zero-sized dynarray is undefined.
+
+
+  
+#include <__config>
+
+#if _LIBCPP_STD_VER > 11
+
+#include <dynarray>
+#include <cassert>
+
+#include <algorithm>
+#include <complex>
+#include <string>
+
+
+template <class T>
+void test ( ) {
+    typedef std::dynarray<T> dynA;
+    
+    dynA d1 ( 0 );
+    assert ( d1.size() == 0 );
+    assert ( d1.begin() == d1.end ());
+    }
+
+int main()
+{
+    test<int> ();
+    test<double> ();
+    test<std::complex<double>> ();
+    test<std::string> ();
+}
+#else
+int main() {}
+#endif
diff --git a/test/containers/sequences/dynarray/nothing_to_do.pass.cpp b/test/containers/sequences/dynarray/nothing_to_do.pass.cpp
new file mode 100644
index 00000000..b58f5c55
--- /dev/null
+++ b/test/containers/sequences/dynarray/nothing_to_do.pass.cpp
@@ -0,0 +1,12 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+int main()
+{
+}