Implement N3762 string_view: a non-owning reference to a string.

Ed Smith-Rowland 3dw4rd@verizon.net
Fri Nov 15 04:43:00 GMT 2013


Greetings,

As the title says.  It's a pretty simple class" a non-mutating read-only 
view into a const CharT* or a basic_string.

Built and tested on x86_64-linux.

OK?

-------------- next part --------------
2013-11-15  Edward Smith-Rowland  <3dw4rd@verizon.net>

	Implement N3762 string_view: a non-owning reference to a string.
	* include/Makefile.am: Add string_view and string_view.tcc.
	* include/Makefile.in: Regenerate.
	* include/experimental/string_view: Implement basic_string_view.
	* include/experimental/string_view.tcc: Implement basic_string_view.
	* testsuite/experimental/string_view/capacity/1.cc: New.
	* testsuite/experimental/string_view/cons/char/1.cc: New.
	* testsuite/experimental/string_view/cons/char/2.cc: New.
	* testsuite/experimental/string_view/cons/char/3.cc: New.
	* testsuite/experimental/string_view/cons/wchar_t/1.cc: New.
	* testsuite/experimental/string_view/cons/wchar_t/2.cc: New.
	* testsuite/experimental/string_view/cons/wchar_t/3.cc: New.
	* testsuite/experimental/string_view/element_access/char/1.cc: New.
	* testsuite/experimental/string_view/element_access/char/2.cc: New.
	* testsuite/experimental/string_view/element_access/char/empty.cc: New.
	* testsuite/experimental/string_view/element_access/char/front_back.cc:
	New.
	* testsuite/experimental/string_view/element_access/wchar_t/1.cc: New.
	* testsuite/experimental/string_view/element_access/wchar_t/2.cc: New.
	* testsuite/experimental/string_view/element_access/wchar_t/empty.cc:
	New.
	* testsuite/experimental/string_view/element_access/wchar_t/
	front_back.cc: New.
	* testsuite/experimental/string_view/include.cc: New.
	* testsuite/experimental/string_view/inserters/char/1.cc: New.
	* testsuite/experimental/string_view/inserters/char/2.cc: New.
	* testsuite/experimental/string_view/inserters/char/3.cc: New.
	* testsuite/experimental/string_view/inserters/pod/10081-out.cc: New.
	* testsuite/experimental/string_view/inserters/wchar_t/1.cc: New.
	* testsuite/experimental/string_view/inserters/wchar_t/2.cc: New.
	* testsuite/experimental/string_view/inserters/wchar_t/3.cc: New.
	* testsuite/experimental/string_view/literals/types.cc: New.
	* testsuite/experimental/string_view/literals/values.cc: New.
	* testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
	New.
	* testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
	1.cc: New.
	* testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
	New.
	* testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
	1.cc: New.
	* testsuite/experimental/string_view/operations/compare/char/1.cc: New.
	* testsuite/experimental/string_view/operations/compare/char/13650.cc:
	New.
	* testsuite/experimental/string_view/operations/compare/wchar_t/1.cc:
	New.
	* testsuite/experimental/string_view/operations/compare/wchar_t/
	13650.cc: New.
	* testsuite/experimental/string_view/operations/data/char/1.cc: New.
	* testsuite/experimental/string_view/operations/data/wchar_t/1.cc: New.
	* testsuite/experimental/string_view/operations/find/char/1.cc: New.
	* testsuite/experimental/string_view/operations/find/char/2.cc: New.
	* testsuite/experimental/string_view/operations/find/char/3.cc: New.
	* testsuite/experimental/string_view/operations/find/char/4.cc: New.
	* testsuite/experimental/string_view/operations/find/wchar_t/1.cc: New.
	* testsuite/experimental/string_view/operations/find/wchar_t/2.cc: New.
	* testsuite/experimental/string_view/operations/find/wchar_t/3.cc: New.
	* testsuite/experimental/string_view/operations/find/wchar_t/4.cc: New.
	* testsuite/experimental/string_view/operations/rfind/char/1.cc: New.
	* testsuite/experimental/string_view/operations/rfind/char/2.cc: New.
	* testsuite/experimental/string_view/operations/rfind/char/3.cc: New.
	* testsuite/experimental/string_view/operations/rfind/wchar_t/1.cc: New.
	* testsuite/experimental/string_view/operations/rfind/wchar_t/2.cc: New.
	* testsuite/experimental/string_view/operations/rfind/wchar_t/3.cc: New.
	* testsuite/experimental/string_view/operations/substr/char/1.cc: New.
	* testsuite/experimental/string_view/operations/substr/wchar_t/1.cc:
	New.
	* testsuite/experimental/string_view/operators/char/2.cc: New.
	* testsuite/experimental/string_view/operators/wchar_t/2.cc: New.
	* testsuite/experimental/string_view/range_access/char/1.cc: New.
	* testsuite/experimental/string_view/range_access/wchar_t/1.cc: New.
	* testsuite/experimental/string_view/requirements/
	explicit_instantiation/1.cc: New.
	* testsuite/experimental/string_view/requirements/
	explicit_instantiation/char/1.cc: New.
	* testsuite/experimental/string_view/requirements/
	explicit_instantiation/char16_t/1.cc: New.
	* testsuite/experimental/string_view/requirements/
	explicit_instantiation/char32_t/1.cc: New.
	* testsuite/experimental/string_view/requirements/
	explicit_instantiation/wchar_t/1.cc: New.
	* testsuite/experimental/string_view/requirements/typedefs.cc: New.
	* testsuite/experimental/string_view/types/1.cc: New.
-------------- next part --------------
Index: include/Makefile.am
===================================================================
--- include/Makefile.am	(revision 204647)
+++ include/Makefile.am	(working copy)
@@ -638,7 +638,9 @@
 experimental_srcdir = ${glibcxx_srcdir}/include/experimental
 experimental_builddir = ./experimental
 experimental_headers = \
-	${experimental_srcdir}/optional
+	${experimental_srcdir}/optional \
+	${experimental_srcdir}/string_view \
+	${experimental_srcdir}/string_view.tcc
 
 # This is the common subset of C++ files that all three "C" header models use.
 c_base_srcdir = $(C_INCLUDE_DIR)
Index: include/Makefile.in
===================================================================
--- include/Makefile.in	(revision 204647)
+++ include/Makefile.in	(working copy)
@@ -904,7 +904,9 @@
 experimental_srcdir = ${glibcxx_srcdir}/include/experimental
 experimental_builddir = ./experimental
 experimental_headers = \
-	${experimental_srcdir}/optional
+	${experimental_srcdir}/optional \
+	${experimental_srcdir}/string_view \
+	${experimental_srcdir}/string_view.tcc
 
 
 # This is the common subset of C++ files that all three "C" header models use.
Index: include/experimental/string_view
===================================================================
--- include/experimental/string_view	(revision 0)
+++ include/experimental/string_view	(working copy)
@@ -0,0 +1,684 @@
+// Components for manipulating non-owning sequences of characters -*- C++ -*-
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file experimantal/string_view
+ *  This is a Standard C++ Library header.
+ */
+
+//
+// ISO C++ 14882: 21  Strings library
+//
+
+#ifndef _GLIBCXX_EXPERIMENTAL_STRING_VIEW
+#define _GLIBCXX_EXPERIMENTAL_STRING_VIEW 1
+
+#pragma GCC system_header
+
+#if __cplusplus <= 201103L
+# include <bits/c++14_warning.h>
+#else
+
+#include <debug/debug.h>
+#include <string>
+#include <limits>
+
+namespace std //_GLIBCXX_VISIBILITY(default)
+{
+namespace experimental
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  /**
+   *  @class basic_string_view <string_view>
+   *  @brief  A non-owning reference to a string.
+   *
+   *  @ingroup strings
+   *  @ingroup sequences
+   *
+   *  @tparam _CharT  Type of character
+   *  @tparam _Traits  Traits for character type, defaults to
+   *                   char_traits<_CharT>.
+   *
+   *  A basic_string_view looks like this:
+   *
+   *  @code
+   *    _CharT*    _M_str
+   *    size_t     _M_len
+   *  @endcode
+   */
+  template<typename _CharT, typename _Traits = char_traits<_CharT>>
+    class basic_string_view
+    {
+
+    public:
+
+      // types
+      using traits_type = _Traits;
+      using value_type = _CharT;
+      using pointer = const _CharT*;
+      using const_pointer = const _CharT*;
+      using reference = const _CharT&;
+      using const_reference = const _CharT&;
+      using const_iterator = const _CharT*;
+      using iterator = const_iterator;
+      using const_reverse_iterator = std::reverse_iterator<const_iterator>;
+      using reverse_iterator = const_reverse_iterator;
+      using size_type = size_t;
+      using difference_type = ptrdiff_t;
+      static constexpr size_type npos = size_type(-1);
+
+      // [string.view.cons], construct/copy
+
+      constexpr
+      basic_string_view() noexcept
+      : _M_len{0}, _M_str{nullptr}
+      { }
+
+      constexpr basic_string_view(const basic_string_view&) noexcept = default;
+
+      template<typename _Allocator>
+        basic_string_view(const basic_string<_CharT, _Traits, _Allocator>& __str) noexcept
+        : _M_len{__str.length()}, _M_str{__str.data()}
+        { }
+
+      constexpr basic_string_view(const _CharT* __str)
+      : _M_len{__str == nullptr ? 0 : traits_type::length(__str)}, _M_str{__str}
+      { }
+
+      constexpr basic_string_view(const _CharT* __str, size_type __len)
+      : _M_len{__len}, _M_str{__str}
+      { }
+
+      basic_string_view&
+      operator=(const basic_string_view&) noexcept = default;
+
+      // [string.view.iterators], iterators
+
+      constexpr const_iterator
+      begin() const noexcept
+      { return this->_M_str; }
+
+      constexpr const_iterator
+      end() const noexcept
+      { return this->_M_str + this->_M_len; }
+
+      constexpr const_iterator
+      cbegin() const noexcept
+      { return this->_M_str; }
+
+      constexpr const_iterator
+      cend() const noexcept
+      { return this->_M_str + this->_M_len; }
+
+      const_reverse_iterator
+      rbegin() const noexcept
+      { return std::reverse_iterator<const_iterator>(this->end()); }
+
+      const_reverse_iterator
+      rend() const noexcept
+      { return std::reverse_iterator<const_iterator>(this->begin()); }
+
+      const_reverse_iterator
+      crbegin() const noexcept
+      { return std::reverse_iterator<const_iterator>(this->end()); }
+
+      const_reverse_iterator
+      crend() const noexcept
+      { return std::reverse_iterator<const_iterator>(this->begin()); }
+
+      // [string.view.capacity], capacity
+
+      constexpr size_type
+      size() const noexcept
+      { return this->_M_len; }
+
+      constexpr size_type
+      length() const noexcept
+      { return _M_len; }
+
+      constexpr size_type
+      max_size() const noexcept
+      { return _S_max_size; }
+
+      constexpr bool
+      empty() const noexcept
+      { return this->_M_len == 0; }
+
+      // [string.view.access], element access
+
+      constexpr const _CharT&
+      operator[](size_type __pos) const
+      {
+	_GLIBCXX_DEBUG_ASSERT(__pos <= this->_M_len);
+	return *(this->_M_str + __pos);
+      }
+
+      /*constexpr*/const _CharT&
+      at(size_type __pos) const
+      {
+	if (__pos >= this->_M_len)
+	  __throw_out_of_range_fmt(__N("basic_string_view::at: __pos "
+				       "(which is %zu) >= this->size() "
+				       "(which is %zu)"),
+				   __pos, this->size());
+	return *(this->_M_str + __pos);
+      }
+
+      constexpr const _CharT&
+      front() const
+      {
+	_GLIBCXX_DEBUG_ASSERT(this->_M_len > 0);
+	return *this->_M_str;
+      }
+
+      constexpr const _CharT&
+      back() const
+      {
+	_GLIBCXX_DEBUG_ASSERT(this->_M_len > 0);
+	return *(this->_M_str + this->_M_len - 1);
+      }
+
+      constexpr const _CharT*
+      data() const noexcept
+      { return this->_M_str; }
+
+      // [string.view.modifiers], modifiers:
+      void
+      clear() noexcept
+      {
+	this->_M_len = 0;
+	this->_M_str = nullptr;
+      }
+
+      void
+      remove_prefix(size_type __n)
+      {
+	_GLIBCXX_DEBUG_ASSERT(this->_M_len >= __n);
+	this->_M_str += __n;
+	this->_M_len -= __n;
+      }
+
+      void
+      remove_suffix(size_type __n)
+      { this->_M_len -= __n; }
+
+      void
+      swap(basic_string_view& __sv) noexcept
+      {
+	std::swap(this->_M_len, __sv._M_len);
+	std::swap(this->_M_str, __sv._M_str);
+      }
+
+
+      // [string.view.ops], string operations:
+
+      template<typename _Allocator>
+        explicit operator basic_string<_CharT, _Traits, _Allocator>() const
+        {
+	  return basic_string<_CharT, _Traits, _Allocator>
+					(this->_M_len, this->_M_str);
+	}
+
+      size_type
+      copy(_CharT* __str, size_type __n, size_type __pos = 0) const
+      {
+	__glibcxx_requires_string_len(__str, __n);
+	if (__pos >= this->_M_len)
+	  __throw_out_of_range_fmt(__N("basic_string_view::at: __pos "
+				       "(which is %zu) >= this->size() "
+				       "(which is %zu)"),
+				   __pos, this->size());
+	size_type __rlen{std::min(__n, size_type{this->_M_len  - __pos})};
+	for (auto __begin = this->_M_str + __pos,
+	     __end = this->_M_str + __rlen; __begin != __end;)
+	  *__str++ = *__begin++;
+	return __rlen;
+      }
+
+
+      // [string.view.ops], string operations:
+
+      /*constexpr*/ basic_string_view
+      substr(size_type __pos, size_type __n=npos) const
+      {
+	if (__pos >= this->_M_len)
+	  __throw_out_of_range_fmt(__N("basic_string_view::at: __pos "
+				       "(which is %zu) >= this->size() "
+				       "(which is %zu)"),
+				   __pos, this->size());
+	return basic_string_view{this->_M_str + __pos,
+			std::min(__n, size_type{this->_M_len  - __pos})};
+      }
+
+      int
+      compare(basic_string_view __str) const noexcept
+      {
+	int __ret = traits_type::compare(this->_M_str, __str._M_str,
+					 std::min(this->_M_len, __str._M_len));
+	if (__ret == 0)
+	  __ret = _S_compare(this->_M_len, __str._M_len);
+	return __ret;
+      }
+
+      int
+      compare(size_type __pos1, size_type __n1, basic_string_view __str) const
+      { return this->substr(__pos1, __n1).compare(__str); }
+
+      int
+      compare(size_type __pos1, size_type __n1,
+	      basic_string_view __str, size_type __pos2, size_type __n2) const
+      { return this->substr(__pos1, __n1).compare(__str.substr(__pos2, __n2)); }
+
+      int
+      compare(const _CharT* __str) const noexcept
+      { return this->compare(basic_string_view{__str}); }
+
+      int
+      compare(size_type __pos1, size_type __n1, const _CharT* __str) const
+      { return this->substr(__pos1, __n1).compare(basic_string_view{__str}); }
+
+      int
+      compare(size_type __pos1, size_type __n1,
+	      const _CharT* __str, size_type __n2) const
+      {
+	return this->substr(__pos1, __n1)
+		   .compare(basic_string_view(__str, __n2));
+      }
+
+      size_type
+      find(basic_string_view __str, size_type __pos = 0) const noexcept
+      { return this->find(__str._M_str, __pos, __str._M_len); }
+
+      size_type
+      find(_CharT __c, size_type __pos=0) const noexcept;
+
+      size_type
+      find(const _CharT* __str, size_type __pos, size_type __n) const;
+
+      size_type
+      find(const _CharT* __str, size_type __pos=0) const noexcept
+      { return this->find(__str, __pos, traits_type::length(__str)); }
+
+      size_type
+      rfind(basic_string_view __str, size_type __pos = npos) const noexcept
+      { return this->rfind(__str._M_str, __pos, __str._M_len); }
+
+      size_type
+      rfind(_CharT __c, size_type __pos = npos) const noexcept;
+
+      size_type
+      rfind(const _CharT* __str, size_type __pos, size_type __n) const;
+
+      size_type
+      rfind(const _CharT* __str, size_type __pos = npos) const noexcept
+      { return this->rfind(__str, __pos, traits_type::length(__str)); }
+
+      size_type
+      find_first_of(basic_string_view __str, size_type __pos = 0) const noexcept
+      { return this->find_first_of(__str._M_str, __pos, __str._M_len); }
+
+      size_type
+      find_first_of(_CharT __c, size_type __pos = 0) const noexcept
+      { return this->find(__c, __pos); }
+
+      size_type
+      find_first_of(const _CharT* __str, size_type __pos, size_type __n) const;
+
+      size_type
+      find_first_of(const _CharT* __str, size_type __pos = 0) const noexcept
+      { return this->find_first_of(__str, __pos, traits_type::length(__str)); }
+
+      size_type
+      find_last_of(basic_string_view __str,
+		   size_type __pos = npos) const noexcept
+      { return this->find_last_of(__str._M_str, __pos, __str._M_len); }
+
+      size_type
+      find_last_of(_CharT __c, size_type __pos=npos) const noexcept
+      { return this->rfind(__c, __pos); }
+
+      size_type
+      find_last_of(const _CharT* __str, size_type __pos, size_type __n) const;
+
+      size_type
+      find_last_of(const _CharT* __str, size_type __pos = npos) const noexcept
+      { return this->find_last_of(__str, __pos, traits_type::length(__str)); }
+
+      size_type
+      find_first_not_of(basic_string_view __str,
+			size_type __pos = 0) const noexcept
+      { return this->find_first_not_of(__str._M_str, __pos, __str._M_len); }
+
+      size_type
+      find_first_not_of(_CharT __c, size_type __pos = 0) const noexcept;
+
+      size_type
+      find_first_not_of(const _CharT* __str,
+			size_type __pos, size_type __n) const;
+
+      size_type
+      find_first_not_of(const _CharT* __str, size_type __pos = 0) const noexcept
+      {
+	return this->find_first_not_of(__str, __pos,
+				       traits_type::length(__str));
+      }
+
+      size_type
+      find_last_not_of(basic_string_view __str,
+		       size_type __pos = npos) const noexcept
+      { return this->find_last_not_of(__str._M_str, __pos, __str._M_len); }
+
+      size_type
+      find_last_not_of(_CharT __c, size_type __pos = npos) const noexcept;
+
+      size_type
+      find_last_not_of(const _CharT* __str, size_type __pos, size_type __n) const;
+
+      size_type
+      find_last_not_of(const _CharT* __str,
+		       size_type __pos = npos) const noexcept
+      {
+	return this->find_last_not_of(__str, __pos,
+				      traits_type::length(__str));
+      }
+
+    private:
+
+      //  Compute max_size similarly to how string does it.
+      static const size_type _S_max_size = (npos
+					  - sizeof(size_type) - sizeof(void*))
+					 / sizeof(value_type) / 4;
+
+      static /*constexpr*/const int
+      _S_compare(size_type __n1, size_type __n2) noexcept
+      {
+	const difference_type __diff = difference_type(__n1 - __n2);
+
+	if (__diff > std::numeric_limits<int>::max())
+	  return std::numeric_limits<int>::max();
+	else if (__diff < std::numeric_limits<int>::min())
+	  return std::numeric_limits<int>::min();
+	else
+	  return int{__diff};
+      }
+
+      size_t	    _M_len;
+      const _CharT* _M_str;
+    };
+
+
+  // [string.view.comparison], non-member basic_string_view comparison functions
+
+  namespace __detail
+  {
+    //  Identiry transform to make ADL work with just one argument.
+    //  See n3766.html.
+    template<class _Tp=void>
+      struct __identity
+      { typedef _Tp type; };
+
+    template<>
+      struct __identity<void>;
+
+    template<class _Tp>
+      using __idt = typename __identity<_Tp>::type;
+  }
+
+  template<typename _CharT, typename _Traits>
+    bool
+    operator==(basic_string_view<_CharT, _Traits> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) == 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator==(basic_string_view<_CharT, _Traits> __x,
+               __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept
+    { return __x.compare(__y) == 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator==(__detail::__idt<basic_string_view<_CharT, _Traits>> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) == 0; }
+
+  template<typename _CharT, typename _Traits>
+    bool
+    operator!=(basic_string_view<_CharT, _Traits> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return !(__x == __y); }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator!=(basic_string_view<_CharT, _Traits> __x,
+               __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept
+    { return !(__x == __y); }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator!=(__detail::__idt<basic_string_view<_CharT, _Traits>> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return !(__x == __y); }
+
+  template<typename _CharT, typename _Traits>
+    bool
+    operator< (basic_string_view<_CharT, _Traits> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) < 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator< (basic_string_view<_CharT, _Traits> __x,
+               __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept
+    { return __x.compare(__y) < 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator< (__detail::__idt<basic_string_view<_CharT, _Traits>> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) < 0; }
+
+  template<typename _CharT, typename _Traits>
+    bool
+    operator> (basic_string_view<_CharT, _Traits> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) > 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator> (basic_string_view<_CharT, _Traits> __x,
+               __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept
+    { return __x.compare(__y) > 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator> (__detail::__idt<basic_string_view<_CharT, _Traits>> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) > 0; }
+
+  template<typename _CharT, typename _Traits>
+    bool
+    operator<=(basic_string_view<_CharT, _Traits> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) <= 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator<=(basic_string_view<_CharT, _Traits> __x,
+               __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept
+    { return __x.compare(__y) <= 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator<=(__detail::__idt<basic_string_view<_CharT, _Traits>> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) <= 0; }
+
+  template<typename _CharT, typename _Traits>
+    bool
+    operator>=(basic_string_view<_CharT, _Traits> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) >= 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator>=(basic_string_view<_CharT, _Traits> __x,
+               __detail::__idt<basic_string_view<_CharT, _Traits>> __y) noexcept
+    { return __x.compare(__y) >= 0; }
+  template<typename _CharT, typename _Traits>
+    bool
+    operator>=(__detail::__idt<basic_string_view<_CharT, _Traits>> __x,
+               basic_string_view<_CharT, _Traits> __y) noexcept
+    { return __x.compare(__y) >= 0; }
+
+  // [string.view.comparison], sufficient additional overloads of comparison functions
+
+  // [string.view.nonmem], other non-member basic_string_view functions
+  template<typename _CharT, typename _Traits = char_traits<_CharT>,
+           typename _Allocator = allocator<_CharT>>
+    basic_string<_CharT, _Traits, _Allocator>
+    to_string(basic_string_view<_CharT, _Traits> __str,
+	      const _Allocator& __alloc = _Allocator())
+    {
+      return basic_string<_CharT, _Traits, _Allocator>
+			(__str.begin(), __str.end(), __alloc);
+    }
+
+  template<typename _CharT, typename _Traits>
+    basic_ostream<_CharT, _Traits>&
+      operator<<(basic_ostream<_CharT, _Traits>& __os,
+                 basic_string_view<_CharT,_Traits> __str)
+      { return __ostream_insert(__os, __str.data(), __str.size()); }
+
+
+  // basic_string_view typedef names
+
+  using string_view = basic_string_view<char>;
+#ifdef _GLIBCXX_USE_WCHAR_T
+  using wstring_view = basic_string_view<wchar_t>;
+#endif
+#ifdef _GLIBCXX_USE_C99_STDINT_TR1
+  using u16string_view = basic_string_view<char16_t>;
+  using u32string_view = basic_string_view<char32_t>;
+#endif
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace experimental
+
+
+  // [string.view.hash], hash support:
+
+  template<typename _Tp>
+    struct hash;
+
+  template<>
+    struct hash<experimental::string_view>
+    : public __hash_base<size_t, experimental::string_view>
+    {
+      size_t
+      operator()(const experimental::string_view& __str) const noexcept
+      { return std::_Hash_impl::hash(__str.data(), __str.length()); }
+    };
+
+  template<>
+    struct __is_fast_hash<hash<experimental::string_view>> : std::false_type
+    { };
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+  template<>
+    struct hash<experimental::wstring_view>
+    : public __hash_base<size_t, wstring>
+    {
+      size_t
+      operator()(const experimental::wstring_view& __s) const noexcept
+      { return std::_Hash_impl::hash(__s.data(),
+                                     __s.length() * sizeof(wchar_t)); }
+    };
+
+  template<>
+    struct __is_fast_hash<hash<experimental::wstring_view>> : std::false_type
+    { };
+#endif
+
+#ifdef _GLIBCXX_USE_C99_STDINT_TR1
+  template<>
+    struct hash<experimental::u16string_view>
+    : public __hash_base<size_t, experimental::u16string_view>
+    {
+      size_t
+      operator()(const experimental::u16string_view& __s) const noexcept
+      { return std::_Hash_impl::hash(__s.data(),
+                                     __s.length() * sizeof(char16_t)); }
+    };
+
+  template<>
+    struct __is_fast_hash<hash<experimental::u16string_view>> : std::false_type
+    { };
+
+  template<>
+    struct hash<experimental::u32string_view>
+    : public __hash_base<size_t, experimental::u32string_view>
+    {
+      size_t
+      operator()(const experimental::u32string_view& __s) const noexcept
+      { return std::_Hash_impl::hash(__s.data(),
+                                     __s.length() * sizeof(char32_t)); }
+    };
+
+  template<>
+    struct __is_fast_hash<hash<experimental::u32string_view>> : std::false_type
+    { };
+#endif
+
+namespace experimental
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  // I added these EMSR.
+  inline namespace literals
+  {
+  inline namespace string_view_literals
+  {
+
+    inline basic_string_view<char>
+    operator""sv(const char* __str, size_t __len)
+    { return basic_string_view<char>{__str, __len}; }
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+    inline basic_string_view<wchar_t>
+    operator""sv(const wchar_t* __str, size_t __len)
+    { return basic_string_view<wchar_t>{__str, __len}; }
+#endif
+
+#ifdef _GLIBCXX_USE_C99_STDINT_TR1
+    inline basic_string_view<char16_t>
+    operator""sv(const char16_t* __str, size_t __len)
+    { return basic_string_view<char16_t>{__str, __len}; }
+
+    inline basic_string_view<char32_t>
+    operator""sv(const char32_t* __str, size_t __len)
+    { return basic_string_view<char32_t>{__str, __len}; }
+#endif
+
+  }
+  }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace experimental
+} // namespace std
+
+#include <experimental/string_view.tcc>
+
+#endif // __cplusplus <= 201103L
+
+#endif // _GLIBCXX_EXPERIMENTAL_STRING_VIEW
Index: include/experimental/string_view.tcc
===================================================================
--- include/experimental/string_view.tcc	(revision 0)
+++ include/experimental/string_view.tcc	(working copy)
@@ -0,0 +1,229 @@
+// Components for manipulating non-owning sequences of characters -*- C++ -*-
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+/** @file experimantal/string_view.tcc
+ *  This is a Standard C++ Library header.
+ */
+
+//
+// ISO C++ 14882: 21  Strings library
+//
+
+#ifndef _GLIBCXX_EXPERIMENTAL_STRING_VIEW_TCC
+#define _GLIBCXX_EXPERIMENTAL_STRING_VIEW_TCC 1
+
+#pragma GCC system_header
+
+#if __cplusplus <= 201103L
+# include <bits/c++14_warning.h>
+#else
+
+namespace std //_GLIBCXX_VISIBILITY(default)
+{
+namespace experimental
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    find(const _CharT* __str, size_type __pos, size_type __n) const noexcept
+    {
+      __glibcxx_requires_string_len(__str, __n);
+
+      if (__n == 0)
+	return __pos <= this->_M_len ? __pos : npos;
+
+      if (__n <= this->_M_len)
+	{
+	  for (; __pos <= this->_M_len - __n; ++__pos)
+	    if (traits_type::eq(this->_M_str[__pos], __str[0])
+		&& traits_type::compare(this->_M_str + __pos + 1,
+					__str + 1, __n - 1) == 0)
+	      return __pos;
+	}
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    find(_CharT __c, size_type __pos) const noexcept
+    {
+      size_type __ret = npos;
+      if (__pos < this->_M_len)
+	{
+	  const size_type __n = this->_M_len - __pos;
+	  const _CharT* __p = traits_type::find(this->_M_str + __pos, __n, __c);
+	  if (__p)
+	    __ret = __p - this->_M_str;
+	}
+      return __ret;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    rfind(const _CharT* __str, size_type __pos, size_type __n) const noexcept
+    {
+      __glibcxx_requires_string_len(__str, __n);
+
+      if (__n <= this->_M_len)
+	{
+	  __pos = std::min(size_type(this->_M_len - __n), __pos);
+	  do
+	    {
+	      if (traits_type::compare(this->_M_str + __pos, __str, __n) == 0)
+		return __pos;
+	    }
+	  while (__pos-- > 0);
+	}
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    rfind(_CharT __c, size_type __pos) const noexcept
+    {
+      size_type __size = this->_M_len;
+      if (__size > 0)
+	{
+	  if (--__size > __pos)
+	    __size = __pos;
+	  for (++__size; __size-- > 0; )
+	    if (traits_type::eq(this->_M_str[__size], __c))
+	      return __size;
+	}
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    find_first_of(const _CharT* __str, size_type __pos, size_type __n) const
+    {
+      __glibcxx_requires_string_len(__str, __n);
+      for (; __n && __pos < this->_M_len; ++__pos)
+	{
+	  const _CharT* __p = traits_type::find(__str, __n,
+						this->_M_str[__pos]);
+	  if (__p)
+	    return __pos;
+	}
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    find_last_of(const _CharT* __str, size_type __pos, size_type __n) const
+    {
+      __glibcxx_requires_string_len(__str, __n);
+      size_type __size = this->size();
+      if (__size && __n)
+	{
+	  if (--__size > __pos)
+	    __size = __pos;
+	  do
+	    {
+	      if (traits_type::find(__str, __n, this->_M_str[__size]))
+		return __size;
+	    }
+	  while (__size-- != 0);
+	}
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    find_first_not_of(const _CharT* __str, size_type __pos, size_type __n) const
+    {
+      __glibcxx_requires_string_len(__str, __n);
+      for (; __pos < this->_M_len; ++__pos)
+	if (!traits_type::find(__str, __n, this->_M_str[__pos]))
+	  return __pos;
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    find_first_not_of(_CharT __c, size_type __pos) const noexcept
+    {
+      for (; __pos < this->_M_len; ++__pos)
+	if (!traits_type::eq(this->_M_str[__pos], __c))
+	  return __pos;
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    find_last_not_of(const _CharT* __str, size_type __pos, size_type __n) const
+    {
+      __glibcxx_requires_string_len(__str, __n);
+      size_type __size = this->_M_len;
+      if (__size)
+	{
+	  if (--__size > __pos)
+	    __size = __pos;
+	  do
+	    {
+	      if (!traits_type::find(__str, __n, this->_M_str[__size]))
+		return __size;
+	    }
+	  while (__size--);
+	}
+      return npos;
+    }
+
+  template<typename _CharT, typename _Traits>
+    typename basic_string_view<_CharT, _Traits>::size_type
+    basic_string_view<_CharT, _Traits>::
+    find_last_not_of(_CharT __c, size_type __pos) const noexcept
+    {
+      size_type __size = this->_M_len;
+      if (__size)
+	{
+	  if (--__size > __pos)
+	    __size = __pos;
+	  do
+	    {
+	      if (!traits_type::eq(this->_M_str[__size], __c))
+		return __size;
+	    }
+	  while (__size--);
+	}
+      return npos;
+    }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace experimental
+} // namespace std
+
+#endif // __cplusplus <= 201103L
+
+#endif // _GLIBCXX_EXPERIMENTAL_STRING_VIEW_TCC
Index: testsuite/experimental/string_view/capacity/1.cc
===================================================================
--- testsuite/experimental/string_view/capacity/1.cc	(revision 0)
+++ testsuite/experimental/string_view/capacity/1.cc	(working copy)
@@ -0,0 +1,171 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.3 string_view size, length
+
+#include <experimental/string_view>
+#include <cstring>
+#include <testsuite_hooks.h>
+
+template<typename T>
+  struct A { };
+
+template<typename T>
+  bool
+  operator==(const A<T>&, const A<T>&) { return true; }
+
+template<typename T>
+  bool
+  operator<(const A<T>&, const A<T>&) { return true; }
+
+struct B { };
+
+// char_traits specialization
+namespace std
+{
+  template<>
+    struct char_traits<A<B> >
+    {
+      typedef A<B> 		char_type;
+      // Unsigned as wint_t in unsigned.
+      typedef unsigned long  	int_type;
+      typedef streampos 	pos_type;
+      typedef streamoff 	off_type;
+      typedef mbstate_t 	state_type;
+      
+      static void 
+      assign(char_type& __c1, const char_type& __c2)
+      { __c1 = __c2; }
+
+      static bool 
+      eq(const char_type& __c1, const char_type& __c2)
+      { return __c1 == __c2; }
+
+      static bool 
+      lt(const char_type& __c1, const char_type& __c2)
+      { return __c1 < __c2; }
+
+      static int 
+      compare(const char_type* __s1, const char_type* __s2, size_t __n)
+      { 
+	for (size_t __i = 0; __i < __n; ++__i)
+	  if (!eq(__s1[__i], __s2[__i]))
+	    return lt(__s1[__i], __s2[__i]) ? -1 : 1;
+	return 0; 
+      }
+
+      static size_t
+      length(const char_type* __s)
+      { 
+	const char_type* __p = __s; 
+	while (__p) 
+	  ++__p; 
+	return (__p - __s); 
+      }
+
+      static const char_type* 
+      find(const char_type* __s, size_t __n, const char_type& __a)
+      { 
+	for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p)
+	  if (*__p == __a) return __p;
+	return 0;
+      }
+
+      static char_type* 
+      move(char_type* __s1, const char_type* __s2, size_t __n)
+      { return (char_type*) memmove(__s1, __s2, __n * sizeof(char_type)); }
+
+      static char_type* 
+      copy(char_type* __s1, const char_type* __s2, size_t __n)
+      { return (char_type*) memcpy(__s1, __s2, __n * sizeof(char_type)); }
+
+      static char_type* 
+      assign(char_type* __s, size_t __n, char_type __a)
+      { 
+	for (char_type* __p = __s; __p < __s + __n; ++__p) 
+	  assign(*__p, __a);
+        return __s; 
+      }
+
+      static char_type 
+      to_char_type(const int_type&)
+      { return char_type(); }
+
+      static int_type 
+      to_int_type(const char_type&) { return int_type(); }
+
+      static bool 
+      eq_int_type(const int_type& __c1, const int_type& __c2)
+      { return __c1 == __c2; }
+
+      static int_type 
+      eof() { return static_cast<int_type>(-1); }
+
+      static int_type 
+      not_eof(const int_type& __c)
+      { return eq_int_type(__c, eof()) ? int_type(0) : __c; }
+    };
+} // namespace std
+
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::basic_string_view<A<B>> str02;
+  typedef std::experimental::basic_string_view< A<B> >::size_type size_type_o;
+  size_type_o sz03;
+  size_type_o sz04;
+
+  // non-POD types: size, length, max_size, clear(), empty()
+  bool b01 = str02.empty();  
+  VERIFY( b01 == true );
+  sz03 = str02.size();
+  sz04 = str02.length();
+  VERIFY( sz03 == sz04 );
+  str02.data();
+  sz03 = str02.size();
+  sz04 = str02.length();
+  VERIFY( sz03 == sz04 );
+
+  sz03 = str02.max_size();  
+  VERIFY( sz03 >= sz04 );
+
+  sz03 = str02.size();
+  str02.clear();  
+  b01 = str02.empty(); 
+  VERIFY( b01 == true );
+  sz04 = str02.size();  
+  VERIFY( sz03 >= sz04 );
+}
+
+#if !__GXX_WEAK__
+// Explicitly instantiate for systems with no COMDAT or weak support.
+template 
+  const std::experimental::basic_string_view<A<B>>::size_type 
+  std::experimental::basic_string_view<A<B>>::_S_max_size;
+#endif
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/cons/char/1.cc
===================================================================
--- testsuite/experimental/string_view/cons/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/cons/char/1.cc	(working copy)
@@ -0,0 +1,73 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.1 basic_string_view constructors.
+
+#include <experimental/string_view>
+#include <string>
+#include <cstring>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+  typedef std::experimental::string_view::size_type csize_type;
+
+  // basic_string_view()
+  const std::experimental::string_view str00{};
+  VERIFY( str00.length() == 0 );
+  VERIFY( str00.data() == nullptr );
+
+  // basic_string_view(const char*)
+  const char str_lit01[] = "rodeo beach, marin";
+  const std::experimental::string_view str01{str_lit01};
+  VERIFY( str01.length() == 18 );
+  VERIFY( str01.data() == str_lit01 );
+  const std::experimental::string_view str02{"baker beach, san francisco"};
+  VERIFY( str02.length() == 26 );
+
+  // basic_string_view(const string_view&)
+  std::experimental::string_view str04{str01};
+  VERIFY( str04.length() == str01.length() );
+  VERIFY( str04.data() == str01.data() );
+
+  // basic_string_view(const char* s)
+  csize_type len_lit01 = strlen(str_lit01);
+  std::experimental::string_view str05{str_lit01, len_lit01};
+  VERIFY( str05.length() == len_lit01 );
+  VERIFY( str05.data() == str_lit01 );
+  //  This is invalid and unchecked.
+  //std::experimental::string_view str06{nullptr, len_lit01};
+  //VERIFY( str06.length() == 0 );
+  //VERIFY( str06.data() == nullptr );
+
+  // basic_string_view(basic_string& s)
+  std::string istr07(10, 'z');
+  std::experimental::string_view str07{istr07};
+  VERIFY( str07.length() == 10 );
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/cons/char/2.cc
===================================================================
--- testsuite/experimental/string_view/cons/char/2.cc	(revision 0)
+++ testsuite/experimental/string_view/cons/char/2.cc	(working copy)
@@ -0,0 +1,48 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.1 basic_string_view constructors.
+
+#include <new>
+#include <experimental/string_view>
+#include <stdexcept>
+#include <testsuite_hooks.h>
+
+void
+test03()
+{
+  bool test [[gnu::unused]] = true;
+  const char* with_nulls = "This contains \0 a zero byte.";
+
+  // These are tests to see how basic_string_view handles data with NUL
+  // bytes.  Obviously basic_string_view(char*) will halt at the first one, but
+  // nothing else should.
+  std::experimental::string_view s1(with_nulls, 28);
+  VERIFY( s1.size() == 28 );
+  std::experimental::string_view s2(s1);
+  VERIFY( s2.size() == 28 );
+}
+
+int
+main()
+{ 
+  test03();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/cons/char/3.cc
===================================================================
--- testsuite/experimental/string_view/cons/char/3.cc	(revision 0)
+++ testsuite/experimental/string_view/cons/char/3.cc	(working copy)
@@ -0,0 +1,41 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.1 basic_string_view constructors.
+
+#include <experimental/string_view>
+#include <vector>
+#include <testsuite_hooks.h>
+
+void
+test05()
+{
+  bool test [[gnu::unused]] = true;
+
+  char const * s = 0;
+  std::experimental::string_view zero_length_built_with_NULL(s, 0);
+}
+
+int
+main()
+{ 
+  test05();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/cons/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/cons/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/cons/wchar_t/1.cc	(working copy)
@@ -0,0 +1,73 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.1 basic_string_view constructors.
+
+#include <experimental/string_view>
+#include <string>
+#include <cwchar>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+  typedef std::experimental::wstring_view::size_type csize_type;
+
+  // basic_string_view()
+  const std::experimental::wstring_view str00{};
+  VERIFY( str00.length() == 0 );
+  VERIFY( str00.data() == nullptr );
+
+  // basic_string_view(const char*)
+  const wchar_t str_lit01[] = L"rodeo beach, marin";
+  const std::experimental::wstring_view str01{str_lit01};
+  VERIFY( str01.length() == 18 );
+  VERIFY( str01.data() == str_lit01 );
+  const std::experimental::wstring_view str02{L"baker beach, san francisco"};
+  VERIFY( str02.length() == 26 );
+
+  // basic_string_view(const string_view&)
+  std::experimental::wstring_view str04{str01};
+  VERIFY( str04.length() == str01.length() );
+  VERIFY( str04.data() == str01.data() );
+
+  // basic_string_view(const char* s)
+  csize_type len_lit01 = wcslen(str_lit01);
+  std::experimental::wstring_view str05{str_lit01, len_lit01};
+  VERIFY( str05.length() == len_lit01 );
+  VERIFY( str05.data() == str_lit01 );
+  //  This is invalid and unchecked.
+  //std::experimental::wstring_view str06{nullptr, len_lit01};
+  //VERIFY( str06.length() == 0 );
+  //VERIFY( str06.data() == nullptr );
+
+  // basic_string_view(basic_string& s)
+  std::wstring istr07(10, L'z');
+  std::experimental::wstring_view str07{istr07};
+  VERIFY( str07.length() == 10 );
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/cons/wchar_t/2.cc
===================================================================
--- testsuite/experimental/string_view/cons/wchar_t/2.cc	(revision 0)
+++ testsuite/experimental/string_view/cons/wchar_t/2.cc	(working copy)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.1 basic_string_view constructors.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+void
+test03()
+{
+  bool test [[gnu::unused]] = true;
+  const wchar_t* with_nulls = L"This contains \0 a zero byte.";
+
+  // These are tests to see how basic_string_view handles data with NUL
+  // bytes.  Obviously basic_string_view(char*) will halt at the first one, but
+  // nothing else should.
+  std::experimental::wstring_view s1 (with_nulls, 28);
+  VERIFY( s1.size() == 28 );
+  std::experimental::wstring_view s2 (s1);
+  VERIFY( s2.size() == 28 );
+}
+
+int
+main()
+{ 
+  test03();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/cons/wchar_t/3.cc
===================================================================
--- testsuite/experimental/string_view/cons/wchar_t/3.cc	(revision 0)
+++ testsuite/experimental/string_view/cons/wchar_t/3.cc	(working copy)
@@ -0,0 +1,40 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.1 basic_string_view constructors.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+void
+test05()
+{
+  bool test [[gnu::unused]] = true;
+
+  wchar_t const * s = 0;
+  std::experimental::wstring_view zero_length_built_with_NULL(s, 0);
+}
+
+int
+main()
+{ 
+  test05();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/element_access/char/1.cc
===================================================================
--- testsuite/experimental/string_view/element_access/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/element_access/char/1.cc	(working copy)
@@ -0,0 +1,73 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.4 basic_string element access
+
+#include <experimental/string_view>
+#include <stdexcept>
+#include <testsuite_hooks.h>
+
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::string_view::size_type csize_type;
+  typedef std::experimental::string_view::const_reference cref;
+  typedef std::experimental::string_view::reference ref;
+  csize_type csz01, csz02;
+
+  const std::experimental::string_view str01("tamarindo, costa rica");
+  std::experimental::string_view str02("41st street beach, capitola, california");
+  std::experimental::string_view str03;
+
+  // const_reference operator[] (size_type pos) const;
+  csz01 = str01.size();
+  cref cref1 = str01[csz01 - 1];
+  VERIFY( cref1 == 'a' );
+  cref cref2 = str01[csz01];
+  VERIFY( cref2 == char() );
+
+  // const_reference at(size_type pos) const;
+  csz01 = str01.size();
+  cref cref3 = str01.at(csz01 - 1);
+  VERIFY( cref3 == 'a' );
+  try
+  {
+    str01.at(csz01);
+    VERIFY( false ); // Should not get here, as exception thrown.
+  }
+  catch (std::out_of_range& fail)
+  {
+    VERIFY( true );
+  }
+  catch (...)
+  {
+    VERIFY( false );
+  }
+
+  return test;
+}
+
+int
+main()
+{ 
+  test01();
+  return 0;
+}
Index: testsuite/experimental/string_view/element_access/char/2.cc
===================================================================
--- testsuite/experimental/string_view/element_access/char/2.cc	(revision 0)
+++ testsuite/experimental/string_view/element_access/char/2.cc	(working copy)
@@ -0,0 +1,33 @@
+// { dg-options "-std=gnu++1y" }
+// { dg-do run { xfail *-*-* } }
+// { dg-options "-O0" }
+// { dg-require-debug-mode "" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+
+// libstdc++/21674
+// NB: Should work without any inlining or optimizations (ie. -O0).
+int
+main()
+{
+  typedef std::experimental::string_view string_view_type;
+  experimental::string_view_type s;
+  s[0]; // abort
+}
Index: testsuite/experimental/string_view/element_access/char/empty.cc
===================================================================
--- testsuite/experimental/string_view/element_access/char/empty.cc	(revision 0)
+++ testsuite/experimental/string_view/element_access/char/empty.cc	(working copy)
@@ -0,0 +1,41 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 3 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+//
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// as per 21.3.4
+int
+main()
+{
+  bool test [[gnu::unused]] = true;
+
+  {
+    std::experimental::string_view empty;
+    VERIFY( empty.empty() );
+  }
+
+  {
+    const std::experimental::string_view empty;
+    VERIFY( empty.empty() );
+  }
+
+  return 0;
+}
Index: testsuite/experimental/string_view/element_access/char/front_back.cc
===================================================================
--- testsuite/experimental/string_view/element_access/char/front_back.cc	(revision 0)
+++ testsuite/experimental/string_view/element_access/char/front_back.cc	(working copy)
@@ -0,0 +1,44 @@
+// { dg-options "-std=gnu++1y" }
+// { dg-require-string-conversions "" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::string_view str("ramifications");
+  const std::experimental::string_view cstr("melodien");
+
+  VERIFY( str.front() == 'r' );
+  VERIFY( str.back() == 's' );
+  VERIFY( cstr.front() == 'm' );
+  VERIFY( cstr.back() == 'n' );
+}
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/element_access/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/element_access/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/element_access/wchar_t/1.cc	(working copy)
@@ -0,0 +1,74 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.4 basic_string_view element access
+
+#include <experimental/string_view>
+#include <stdexcept>
+#include <testsuite_hooks.h>
+
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::wstring_view::size_type csize_type;
+  typedef std::experimental::wstring_view::const_reference cref;
+  typedef std::experimental::wstring_view::reference ref;
+  csize_type csz01, csz02;
+
+  const std::experimental::wstring_view str01(L"tamarindo, costa rica");
+  std::experimental::wstring_view str02(L"41st street beach, capitola, california");
+  std::experimental::wstring_view str03;
+
+  // const_reference operator[] (size_type pos) const;
+  csz01 = str01.size();
+  cref cref1 = str01[csz01 - 1];
+  VERIFY( cref1 == L'a' );
+  cref cref2 = str01[csz01];
+  VERIFY( cref2 == wchar_t() );
+
+  // const_reference at(size_type pos) const;
+  csz01 = str01.size();
+  cref cref3 = str01.at(csz01 - 1);
+  VERIFY( cref3 == L'a' );
+  try
+  {
+    str01.at(csz01);
+    VERIFY( false ); // Should not get here, as exception thrown.
+  }
+  catch (std::out_of_range& fail)
+  {
+    VERIFY( true );
+  }
+  catch (...)
+  {
+    VERIFY( false );
+  }
+
+  return test;
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/element_access/wchar_t/2.cc
===================================================================
--- testsuite/experimental/string_view/element_access/wchar_t/2.cc	(revision 0)
+++ testsuite/experimental/string_view/element_access/wchar_t/2.cc	(working copy)
@@ -0,0 +1,33 @@
+// { dg-options "-std=gnu++1y" }
+// { dg-do run { xfail *-*-* } }
+// { dg-options "-O0" }
+// { dg-require-debug-mode "" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+
+// libstdc++/21674
+// NB: Should work without any inlining or optimizations (ie. -O0).
+int
+main()
+{
+  typedef std::experimental::wstring_view string_view_type;
+  string_view_type s;
+  s[0]; // abort
+}
Index: testsuite/experimental/string_view/element_access/wchar_t/empty.cc
===================================================================
--- testsuite/experimental/string_view/element_access/wchar_t/empty.cc	(revision 0)
+++ testsuite/experimental/string_view/element_access/wchar_t/empty.cc	(working copy)
@@ -0,0 +1,41 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+//
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// as per 21.3.4
+int
+main()
+{
+  bool test [[gnu::unused]] = true;
+  
+  {
+    std::experimental::wstring_view empty;
+    VERIFY( empty.empty() );
+  }
+
+  {
+    const std::experimental::wstring_view empty;
+    VERIFY( empty.empty() );
+  }
+
+  return 0;
+}
Index: testsuite/experimental/string_view/element_access/wchar_t/front_back.cc
===================================================================
--- testsuite/experimental/string_view/element_access/wchar_t/front_back.cc	(revision 0)
+++ testsuite/experimental/string_view/element_access/wchar_t/front_back.cc	(working copy)
@@ -0,0 +1,44 @@
+// { dg-options "-std=gnu++1y" }
+// { dg-require-string-conversions "" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::wstring_view str(L"ramifications");
+  const std::experimental::wstring_view cstr(L"melodien");
+
+  VERIFY( str.front() == L'r' );
+  VERIFY( str.back() == L's' );
+  VERIFY( cstr.front() == L'm' );
+  VERIFY( cstr.back() == L'n' );
+}
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/include.cc
===================================================================
--- testsuite/experimental/string_view/include.cc	(revision 0)
+++ testsuite/experimental/string_view/include.cc	(working copy)
@@ -0,0 +1,25 @@
+// -*- C++ -*-
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// NB: This issue affected only debug-mode.
+
+// { dg-options "-std=gnu++1y -fno-rtti" }
+// { dg-do compile }
+
+#include <experimental/string_view>
Index: testsuite/experimental/string_view/inserters/char/1.cc
===================================================================
--- testsuite/experimental/string_view/inserters/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/inserters/char/1.cc	(working copy)
@@ -0,0 +1,69 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.7.9 inserters and extractors
+
+// NB: This file is predicated on sstreams, istreams, and ostreams
+// working, not to mention other major details like char_traits, and
+// all of the string_view class.
+
+#include <experimental/string_view>
+#include <stdexcept>
+#include <sstream>
+#include <fstream>
+#include <iostream>
+#include <testsuite_hooks.h>
+
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::string_view::size_type csize_type;
+  typedef std::experimental::string_view::const_reference cref;
+  typedef std::experimental::string_view::reference ref;
+
+  const std::experimental::string_view str01("sailing grand traverse bay\n"
+	       "\t\t\t    from Elk Rapids to the point reminds me of miles");
+    
+  // ostream& operator<<(ostream&, const basic_string_view&)
+  std::ostringstream ostrs01;
+  try 
+    {
+      ostrs01 << str01;
+      VERIFY( ostrs01.str() == str01 );
+    }
+  catch(std::exception& fail) 
+    {
+      VERIFY( false );
+    }
+  
+  std::experimental::string_view hello_world;
+  std::cout << hello_world;
+
+  return test;
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/inserters/char/2.cc
===================================================================
--- testsuite/experimental/string_view/inserters/char/2.cc	(revision 0)
+++ testsuite/experimental/string_view/inserters/char/2.cc	(working copy)
@@ -0,0 +1,93 @@
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.7.9 inserters and extractors
+
+// NB: This file is predicated on sstreams, istreams, and ostreams
+// working, not to mention other major details like char_traits, and
+// all of the string_view class.
+
+// { dg-options "-std=gnu++1y" }
+// { dg-require-fileio "" }
+
+#include <experimental/string_view>
+#include <string>
+#include <fstream>
+#include <iostream>
+#include <testsuite_hooks.h>
+
+// testing basic_filebuf::xsputn via stress testing with large string_views
+// based on a bug report libstdc++ 9
+// mode == out
+void
+test05(std::size_t size)
+{
+  bool test [[gnu::unused]] = true;
+
+  const char filename[] = "inserters_extractors-2.txt";
+  const char fillc = 'f';
+  std::ofstream ofs(filename);
+  std::string str(size, fillc);
+  std::experimental::string_view strv{str};
+
+  // sanity checks
+  VERIFY( str.size() == size );
+  VERIFY( ofs.good() );
+
+  // stress test
+  ofs << str << std::endl;
+  if (!ofs.good()) 
+    test = false;
+
+  ofs << str << std::endl;
+  if (!ofs.good()) 
+    test = false;
+
+  VERIFY( str.size() == size );
+  VERIFY( ofs.good() );
+
+  ofs.close();
+
+  // sanity check on the written file
+  std::ifstream ifs(filename);
+  std::size_t count = 0;
+  char c;
+  while (count <= (2 * size) + 4)
+    {
+      ifs >> c;
+      if (ifs.good() && c == fillc)
+	{
+	  ++count;
+	  c = '0';
+	}
+      else 
+	break;
+    }
+
+  VERIFY( count == 2 * size );
+}
+
+int
+main()
+{
+  test05(1); 
+  test05(1000); 
+  test05(10000);
+
+  return 0;
+}
Index: testsuite/experimental/string_view/inserters/char/3.cc
===================================================================
--- testsuite/experimental/string_view/inserters/char/3.cc	(revision 0)
+++ testsuite/experimental/string_view/inserters/char/3.cc	(working copy)
@@ -0,0 +1,56 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.7.9 inserters and extractors
+
+// NB: This file is predicated on sstreams, istreams, and ostreams
+// working, not to mention other major details like char_traits, and
+// all of the string_view class.
+
+#include <experimental/string_view>
+#include <sstream>
+#include <iomanip>
+#include <testsuite_hooks.h>
+
+// libstdc++/2830
+void
+test09()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::string_view foo{"peace\0\0\0& love"};
+
+  std::ostringstream oss1;
+  oss1 << foo;
+  VERIFY( oss1.str() == foo );
+
+  std::ostringstream oss2;
+  oss2.width(20);
+  oss2 << foo;
+  VERIFY( oss2.str() != foo );
+  VERIFY( oss2.str().size() == 20 );
+}
+
+int
+main()
+{ 
+  test09();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/inserters/pod/10081-out.cc
===================================================================
--- testsuite/experimental/string_view/inserters/pod/10081-out.cc	(revision 0)
+++ testsuite/experimental/string_view/inserters/pod/10081-out.cc	(working copy)
@@ -0,0 +1,85 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+
+// 27.6.1.1.2 class basic_istream::sentry
+
+#include <experimental/string_view>
+#include <ostream>
+#include <sstream>
+#include <locale>
+#include <typeinfo>
+#include <testsuite_hooks.h>
+#include <testsuite_character.h>
+
+void
+test01()
+{
+  using namespace std;
+
+  using __gnu_test::pod_ushort;
+  typedef experimental::basic_string_view<pod_ushort> 	string_type;
+  typedef basic_stringbuf<pod_ushort> 	stringbuf_type;
+  typedef basic_ostream<pod_ushort> 	ostream_type;
+
+  bool test [[gnu::unused]] = true;
+
+  string_type str;
+  stringbuf_type strbuf01;
+  ostream_type stream(&strbuf01);
+
+  try
+    {
+      stream << str;
+    }
+  catch (std::bad_cast& obj)
+    {
+      // Ok, throws bad_cast because locale has no ctype facet.
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+
+  const std::locale loc(std::locale::classic(), new std::ctype<pod_ushort>);
+  stream.imbue(loc);
+  try
+    {
+      stream << str;
+    }
+  catch (...)
+    {
+      VERIFY( false );
+    }
+}
+
+#if !__GXX_WEAK__
+// Explicitly instantiate for systems with no COMDAT or weak support.
+template 
+  const std::experimental::basic_string_view<__gnu_test::pod_ushort>::size_type 
+  std::experimental::basic_string_view_view<__gnu_test::pod_ushort>::_S_max_size;
+#endif
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/inserters/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/inserters/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/inserters/wchar_t/1.cc	(working copy)
@@ -0,0 +1,74 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.7.9 inserters and extractors
+
+// NB: This file is predicated on sstreams, istreams, and ostreams
+// working, not to mention other major details like char_traits, and
+// all of the string_view class.
+
+#include <experimental/string_view>
+#include <stdexcept>
+#include <sstream>
+#include <fstream>
+#include <iostream>
+#include <testsuite_hooks.h>
+
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::wstring_view::size_type csize_type;
+  typedef std::experimental::wstring_view::const_reference cref;
+  typedef std::experimental::wstring_view::reference ref;
+
+  const std::experimental::wstring_view str01(L"sailing grand traverse bay\n"
+	       L"\t\t\t    from Elk Rapids to the point reminds me of miles");
+  const std::experimental::wstring_view str02(L"sailing");
+  const std::experimental::wstring_view str03(L"grand");
+  const std::experimental::wstring_view str04(L"traverse");
+  const std::experimental::wstring_view str05;
+  std::experimental::wstring_view str10;
+
+  // ostream& operator<<(ostream&, const basic_string_view&)
+  std::wostringstream ostrs01;
+  try 
+    {
+      ostrs01 << str01;
+      VERIFY( ostrs01.str() == str01 );
+    }
+  catch(std::exception& fail) 
+    {
+      VERIFY( false );
+    }
+  
+  std::experimental::wstring_view hello_world;
+  std::wcout << hello_world;
+
+  return test;
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/inserters/wchar_t/2.cc
===================================================================
--- testsuite/experimental/string_view/inserters/wchar_t/2.cc	(revision 0)
+++ testsuite/experimental/string_view/inserters/wchar_t/2.cc	(working copy)
@@ -0,0 +1,91 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.7.9 inserters and extractors
+
+// NB: This file is predicated on sstreams, istreams, and ostreams
+// working, not to mention other major details like char_traits, and
+// all of the string_view class.
+
+#include <experimental/string_view>
+#include <string>
+#include <fstream>
+#include <iostream>
+#include <testsuite_hooks.h>
+
+// testing basic_filebuf::xsputn via stress testing with large string_views
+// based on a bug report libstdc++ 9
+// mode == out
+void
+test05(std::size_t size)
+{
+  bool test [[gnu::unused]] = true;
+
+  const char filename[] = "inserters_extractors-2.txt";
+  const wchar_t fillc = L'f';
+  std::wofstream ofs(filename);
+  std::wstring str(size, fillc);
+  std::experimental::wstring_view strv(str);
+
+  // sanity checks
+  VERIFY( str.size() == size );
+  VERIFY( ofs.good() );
+
+  // stress test
+  ofs << str << std::endl;
+  if (!ofs.good()) 
+    test = false;
+
+  ofs << str << std::endl;
+  if (!ofs.good()) 
+    test = false;
+
+  VERIFY( str.size() == size );
+  VERIFY( ofs.good() );
+
+  ofs.close();
+
+  // sanity check on the written file
+  std::wifstream ifs(filename);
+  std::size_t count = 0;
+  wchar_t c;
+  while (count <= (2 * size) + 4)
+    {
+      ifs >> c;
+      if (ifs.good() && c == fillc)
+	{
+	  ++count;
+	  c = '0';
+	}
+      else 
+	break;
+    }
+
+  VERIFY( count == 2 * size );
+}
+
+int
+main()
+{
+  test05(1); 
+  test05(1000); 
+  test05(10000);
+
+  return 0;
+}
Index: testsuite/experimental/string_view/inserters/wchar_t/3.cc
===================================================================
--- testsuite/experimental/string_view/inserters/wchar_t/3.cc	(revision 0)
+++ testsuite/experimental/string_view/inserters/wchar_t/3.cc	(working copy)
@@ -0,0 +1,56 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.7.9 inserters and extractors
+
+// NB: This file is predicated on sstreams, istreams, and ostreams
+// working, not to mention other major details like char_traits, and
+// all of the string_view class.
+
+#include <experimental/string_view>
+#include <sstream>
+#include <iomanip>
+#include <testsuite_hooks.h>
+
+// libstdc++/2830
+void
+test09()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::wstring_view foo{L"peace\0\0\0& love"};
+  
+  std::wostringstream oss1;
+  oss1 << foo;
+  VERIFY( oss1.str() == foo );
+  
+  std::wostringstream oss2;
+  oss2.width(20);
+  oss2 << foo;
+  VERIFY( oss2.str() != foo );
+  VERIFY( oss2.str().size() == 20 );
+}
+
+int
+main()
+{ 
+  test09();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/literals/types.cc
===================================================================
--- testsuite/experimental/string_view/literals/types.cc	(revision 0)
+++ testsuite/experimental/string_view/literals/types.cc	(working copy)
@@ -0,0 +1,43 @@
+// { dg-options "-std=gnu++1y" }
+// { dg-do compile }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <type_traits>
+
+void
+test01()
+{
+  using namespace std::experimental::literals::string_view_literals;
+
+  static_assert(std::is_same<decltype("Hello"sv), std::experimental::string_view>::value,
+		"\"Hello\"s is std::string_view");
+
+  static_assert(std::is_same<decltype(u8"Hello"sv), std::experimental::string_view>::value,
+		"u8\"Hello\"s is std::string_view");
+
+  static_assert(std::is_same<decltype(L"Hello"sv), std::experimental::wstring_view>::value,
+		"L\"Hello\"s is std::wstring_view");
+
+  static_assert(std::is_same<decltype(u"Hello"sv), std::experimental::u16string_view>::value,
+		"u\"Hello\"s is std::u16string_view");
+
+  static_assert(std::is_same<decltype(U"Hello"sv), std::experimental::u32string_view>::value,
+		"U\"Hello\"s is std::u32string_view");
+}
Index: testsuite/experimental/string_view/literals/values.cc
===================================================================
--- testsuite/experimental/string_view/literals/values.cc	(revision 0)
+++ testsuite/experimental/string_view/literals/values.cc	(working copy)
@@ -0,0 +1,46 @@
+// { dg-do run }
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  using namespace std::experimental::literals::string_view_literals;
+
+  std::experimental::string_view planet = "Mercury"sv;
+  std::experimental::wstring_view wplanet = L"Venus"sv;
+  std::experimental::string_view u8planet = u8"Mars"sv;
+  std::experimental::u16string_view u16planet = u"Juiter"sv;
+  std::experimental::u32string_view u32planet = U"Saturn"sv;
+
+  VERIFY( planet == std::experimental::string_view("Mercury") );
+  VERIFY( wplanet == std::experimental::wstring_view(L"Venus") );
+  VERIFY( u8planet == std::experimental::string_view(u8"Mars") );
+  VERIFY( u16planet == std::experimental::u16string_view(u"Juiter") );
+  VERIFY( u32planet == std::experimental::u32string_view(U"Saturn") );
+}
+
+int
+main()
+{
+  test01();
+}
Index: testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc
===================================================================
--- testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc	(working copy)
@@ -0,0 +1,44 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  using namespace std::experimental;
+
+  string_view str0{"olympus mons"};
+  string_view::pointer p = str0.data();
+  str0.remove_prefix(4);
+  VERIFY( str0.data() == p + 4);
+  VERIFY( str0.length() == 8 );
+  VERIFY( str0 == string_view{"pus mons"} );
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/1.cc	(working copy)
@@ -0,0 +1,44 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  using namespace std::experimental;
+
+  wstring_view str0{L"olympus mons"};
+  wstring_view::pointer p = str0.data();
+  str0.remove_prefix(4);
+  VERIFY( str0.data() == p + 4);
+  VERIFY( str0.length() == 8 );
+  VERIFY( str0 == wstring_view{L"pus mons"} );
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc
===================================================================
--- testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc	(working copy)
@@ -0,0 +1,44 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  using namespace std::experimental;
+
+  string_view str0{"olympus mons"};
+  string_view::pointer p = str0.data();
+  str0.remove_suffix(2);
+  VERIFY( str0.data() == p);
+  VERIFY( str0.length() == 10 );
+  VERIFY( str0 == string_view{"olympus mo"} );
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/1.cc	(working copy)
@@ -0,0 +1,44 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  using namespace std::experimental;
+
+  wstring_view str0{L"olympus mons"};
+  wstring_view::pointer p = str0.data();
+  str0.remove_suffix(2);
+  VERIFY( str0.data() == p);
+  VERIFY( str0.length() == 10 );
+  VERIFY( str0 == wstring_view{L"olympus mo"} );
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/compare/char/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/compare/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/compare/char/1.cc	(working copy)
@@ -0,0 +1,134 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.8 basic_string_view::compare
+// int compare(const basic_string_view& str) const;
+// int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
+// int compare(size_type pos1, size_type n1, const basic_string_view& str,
+//             size_type pos2, size_type n2) const;
+// int compare(const charT* s) const;
+// int compare(size_type pos1, size_type n1,
+//             const charT* s, size_type n2 = npos) const;
+
+// NB compare should be thought of as a lexographical compare, ie how
+// things would be sorted in a dictionary.
+
+#include <experimental/string_view>
+#include <cstring>
+#include <testsuite_hooks.h>
+
+enum want_value {lt=0, z=1, gt=2};
+
+int
+test_value(int result, want_value expected);
+
+int
+test_value(int result, want_value expected)
+{
+  bool test [[gnu::unused]] = true;
+  bool pass = false;
+
+  switch (expected) {
+  case lt:
+    if (result < 0)
+      pass = true;
+    break;
+  case z:
+    if (!result)
+      pass = true;
+    break;
+  case gt:
+    if (result > 0)
+      pass = true;
+    break;
+  default:
+    pass = false; //should not get here
+  }
+  VERIFY(pass);
+  return 0;
+}
+ 
+
+int 
+test01()
+{
+  using namespace std::experimental;
+
+  string_view 	str_0("costa rica");
+  string_view 	str_1("costa marbella");
+  string_view 	str_2;
+
+  //sanity check
+  test_value(strcmp("costa marbella", "costa rica"), lt); 
+  test_value(strcmp("costa rica", "costa rica"), z);
+  test_value(strcmp(str_1.data(), str_0.data()), lt);
+  test_value(strcmp(str_0.data(), str_1.data()), gt);
+  test_value(strncmp(str_1.data(), str_0.data(), 6), z);
+  test_value(strncmp(str_1.data(), str_0.data(), 14), lt);
+  test_value(memcmp(str_1.data(), str_0.data(), 6), z);
+  test_value(memcmp(str_1.data(), str_0.data(), 14), lt);
+  test_value(memcmp("costa marbella", "costa rica", 14), lt);
+
+  // int compare(const basic_string_view& str) const;
+  test_value(str_0.compare(str_1), gt); //because r>m
+  test_value(str_1.compare(str_0), lt); //because m<r
+  str_2 = str_0;
+  test_value(str_2.compare(str_0), z);
+  str_2 = "cost";
+  test_value(str_2.compare(str_0), lt);
+  str_2 = "costa ricans";
+  test_value(str_2.compare(str_0), gt);
+
+  // int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
+  test_value(str_1.compare(0, 6, str_0), lt);
+  str_2 = "cost";
+  test_value(str_1.compare(0, 4, str_2), z);
+  test_value(str_1.compare(0, 5, str_2), gt);
+
+  // int compare(size_type pos1, size_type n1, const basic_string_view& str, 
+  //		 size_type pos2, size_type n2) const;	
+  test_value(str_1.compare(0, 6, str_0, 0, 6), z);
+  test_value(str_1.compare(0, 7, str_0, 0, 7), lt);
+  test_value(str_0.compare(0, 7, str_1, 0, 7), gt);
+
+  // int compare(const charT* s) const;
+  test_value(str_0.compare("costa marbella"), gt);
+  test_value(str_1.compare("costa rica"), lt);
+  str_2 = str_0;
+  test_value(str_2.compare("costa rica"), z);
+  test_value(str_2.compare("cost"), gt);			
+  test_value(str_2.compare("costa ricans"), lt);	   
+
+  // int compare(size_type pos, size_type n1, const charT* str,
+  //             size_type n2 = npos) const;
+  test_value(str_1.compare(0, 6, "costa rica", 0, 6), z); 
+  test_value(str_1.compare(0, 7, "costa rica", 0, 7), lt); 
+  test_value(str_0.compare(0, 7, "costa marbella", 0, 7), gt); 
+
+  return 0;
+}
+
+
+int 
+main() 
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/compare/char/13650.cc
===================================================================
--- testsuite/experimental/string_view/operations/compare/char/13650.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/compare/char/13650.cc	(working copy)
@@ -0,0 +1,50 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.8 basic_string_view::compare [lib.string_view::compare]
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// libstdc++/13650
+void
+test01()
+{
+  using namespace std::experimental;
+  bool test [[gnu::unused]] = true;
+
+  const char lit_01[]{ 'w', 'e', '\0', 'r', 'd' };
+  const char lit_02[]{ 'w', 'e', 'i', '\0', 'd' };
+
+  const char lit_ref_a[]{ 'w', 'e', '\0', 'q', 'd' };
+  const string_view str_a(lit_ref_a, 5);
+  VERIFY( str_a.compare(0, 5, lit_01, 5) < 0 );
+
+  const char lit_ref_b[]{ 'w', 'e', 'i' };
+  const string_view str_b(lit_ref_b, 3);
+  VERIFY( str_b.compare(0, 3, lit_02, 5) < 0 );
+}
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/compare/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/compare/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/compare/wchar_t/1.cc	(working copy)
@@ -0,0 +1,134 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.8 basic_string_view::compare
+// int compare(const basic_string_view& str) const;
+// int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
+// int compare(size_type pos1, size_type n1, const basic_string_view& str,
+//             size_type pos2, size_type n2) const;
+// int compare(const charT* s) const;
+// int compare(size_type pos1, size_type n1,
+//             const charT* s, size_type n2 = npos) const;
+
+// NB compare should be thought of as a lexographical compare, ie how
+// things would be sorted in a dictionary.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+enum want_value {lt=0, z=1, gt=2};
+
+int
+test_value(int result, want_value expected);
+
+int
+test_value(int result, want_value expected)
+{
+  bool test [[gnu::unused]] = true;
+  bool pass = false;
+
+  switch (expected) {
+  case lt:
+    if (result < 0)
+      pass = true;
+    break;
+  case z:
+    if (!result)
+      pass = true;
+    break;
+  case gt:
+    if (result > 0)
+      pass = true;
+    break;
+  default:
+    pass = false; //should not get here
+  }
+
+  VERIFY(pass);
+  return 0;
+}
+ 
+
+int 
+test01()
+{
+  using namespace std::experimental;
+
+  wstring_view 	str_0(L"costa rica");
+  wstring_view 	str_1(L"costa marbella");
+  wstring_view 	str_2;
+
+  //sanity check
+  test_value(wcscmp(L"costa marbella", L"costa rica"), lt); 
+  test_value(wcscmp(L"costa rica", L"costa rica"), z);
+  test_value(wcscmp(str_1.data(), str_0.data()), lt);
+  test_value(wcscmp(str_0.data(), str_1.data()), gt);
+  test_value(wcsncmp(str_1.data(), str_0.data(), 6), z);
+  test_value(wcsncmp(str_1.data(), str_0.data(), 14), lt);
+  test_value(wmemcmp(str_1.data(), str_0.data(), 6), z);
+  test_value(wmemcmp(str_1.data(), str_0.data(), 14), lt);
+  test_value(wmemcmp(L"costa marbella", L"costa rica", 14), lt);
+
+  // int compare(const basic_string_view& str) const;
+  test_value(str_0.compare(str_1), gt); //because r>m
+  test_value(str_1.compare(str_0), lt); //because m<r
+  str_2 = str_0;
+  test_value(str_2.compare(str_0), z);
+  str_2 = L"cost";
+  test_value(str_2.compare(str_0), lt);
+  str_2 = L"costa ricans";
+  test_value(str_2.compare(str_0), gt);
+
+  // int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
+  test_value(str_1.compare(0, 6, str_0), lt);
+  str_2 = L"cost";
+  test_value(str_1.compare(0, 4, str_2), z);
+  test_value(str_1.compare(0, 5, str_2), gt);
+
+  // int compare(size_type pos1, size_type n1, const basic_string_view& str, 
+  //		 size_type pos2, size_type n2) const;	
+  test_value(str_1.compare(0, 6, str_0, 0, 6), z);
+  test_value(str_1.compare(0, 7, str_0, 0, 7), lt);
+  test_value(str_0.compare(0, 7, str_1, 0, 7), gt);
+
+  // int compare(const charT* s) const;
+  test_value(str_0.compare(L"costa marbella"), gt);
+  test_value(str_1.compare(L"costa rica"), lt);
+  str_2 = str_0;
+  test_value(str_2.compare(L"costa rica"), z);
+  test_value(str_2.compare(L"cost"), gt);			
+  test_value(str_2.compare(L"costa ricans"), lt);	   
+
+  // int compare(size_type pos, size_type n1, const charT* str,
+  //             size_type n2 = npos) const;
+  test_value(str_1.compare(0, 6, L"costa rica", 0, 6), z); 
+  test_value(str_1.compare(0, 7, L"costa rica", 0, 7), lt); 
+  test_value(str_0.compare(0, 7, L"costa marbella", 0, 7), gt); 
+
+  return 0;
+}
+
+
+int 
+main() 
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/compare/wchar_t/13650.cc
===================================================================
--- testsuite/experimental/string_view/operations/compare/wchar_t/13650.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/compare/wchar_t/13650.cc	(working copy)
@@ -0,0 +1,50 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.8 basic_string_view::compare [lib.string_view::compare]
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// libstdc++/13650
+void
+test01()
+{
+  using namespace std::experimental;
+  bool test [[gnu::unused]] = true;
+
+  const wchar_t lit_01[] = { L'w', L'e', L'\0', L'r', L'd' };
+  const wchar_t lit_02[] = { L'w', L'e', L'i', L'\0', L'd' };
+
+  const wchar_t lit_ref_a[] = { L'w', L'e', L'\0', L'q', L'd' };
+  const wstring_view str_a(lit_ref_a, 5);
+  VERIFY( str_a.compare(0, 5, lit_01, 5) < 0 );
+
+  const wchar_t lit_ref_b[] = { L'w', L'e', L'i' };
+  const wstring_view str_b(lit_ref_b, 3);
+  VERIFY( str_b.compare(0, 3, lit_02, 5) < 0 );
+}
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/data/char/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/data/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/data/char/1.cc	(working copy)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6 string_view operations
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+int
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::string_view empty;
+
+  // data() for size == 0 is non-NULL?
+  VERIFY( empty.size() == 0 );
+  const std::experimental::string_view::value_type* p = empty.data();
+  VERIFY( p == nullptr );
+
+  return 0;
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/data/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/data/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/data/wchar_t/1.cc	(working copy)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6 string_view operations
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+int
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::wstring_view empty;
+
+  // data() for size == 0 is non-NULL?
+  VERIFY( empty.size() == 0 );
+  const std::experimental::wstring_view::value_type* p = empty.data();
+  VERIFY( p == nullptr );
+
+  return 0;
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/find/char/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/find/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/find/char/1.cc	(working copy)
@@ -0,0 +1,98 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.1 basic_string_view find
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::string_view::size_type csize_type;
+  typedef std::experimental::string_view::const_reference cref;
+  typedef std::experimental::string_view::reference ref;
+  csize_type npos = std::experimental::string_view::npos;
+  csize_type csz01, csz02;
+
+  const char str_lit01[] = "mave";
+  const std::experimental::string_view str01("mavericks, santa cruz");
+  std::experimental::string_view str02(str_lit01);
+  std::experimental::string_view str03("s, s");
+  std::experimental::string_view str04;
+
+  // size_type find(const string_view&, size_type pos = 0) const;
+  csz01 = str01.find(str01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str01, 4);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find(str02, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str02, 3);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find(str03, 0);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find(str03, 3);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find(str03, 12);
+  VERIFY( csz01 == npos );
+
+  // An empty string_view consists of no characters
+  // therefore it should be found at every point in a string_view,
+  // except beyond the end
+  csz01 = str01.find(str04, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str04, 5);
+  VERIFY( csz01 == 5 );
+  csz01 = str01.find(str04, str01.size());
+  VERIFY( csz01 == str01.size() ); 
+  csz01 = str01.find(str04, str01.size()+1);
+  VERIFY( csz01 == npos ); 
+  
+  // size_type find(const char* s, size_type pos, size_type n) const;
+  csz01 = str01.find(str_lit01, 0, 3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str_lit01, 3, 0);
+  VERIFY( csz01 == 3 );
+
+  // size_type find(const char* s, size_type pos = 0) const;
+  csz01 = str01.find(str_lit01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str_lit01, 3);
+  VERIFY( csz01 == npos );
+
+  // size_type find(char c, size_type pos = 0) const;
+  csz01 = str01.find('z');
+  csz02 = str01.size() - 1;
+  VERIFY( csz01 == csz02 );
+  csz01 = str01.find('/');
+  VERIFY( csz01 == npos );
+
+  return test;
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/find/char/2.cc
===================================================================
--- testsuite/experimental/string_view/operations/find/char/2.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/find/char/2.cc	(working copy)
@@ -0,0 +1,97 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.3 basic_string_view find_first_of
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+bool
+test02()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::string_view::size_type csize_type;
+  csize_type npos = std::experimental::string_view::npos;
+  csize_type csz01, csz02;
+
+  const char str_lit01[] = "mave";
+  const std::experimental::string_view str01("mavericks, santa cruz");
+  std::experimental::string_view str02(str_lit01);
+  std::experimental::string_view str03("s, s");
+  std::experimental::string_view str04;
+
+  // size_type find_first_of(const string_view&, size_type pos = 0) const;
+  std::experimental::string_view str05("xena rulez");
+  csz01 = str01.find_first_of(str01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_of(str01, 4);
+  VERIFY( csz01 == 4 );
+  csz01 = str01.find_first_of(str02, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_of(str02, 3);
+  VERIFY( csz01 == 3 );
+  csz01 = str01.find_first_of(str03, 0);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find_first_of(str03, 3);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find_first_of(str03, 12);
+  VERIFY( csz01 == 16 );
+  csz01 = str01.find_first_of(str05, 0);
+  VERIFY( csz01 == 1 );
+  csz01 = str01.find_first_of(str05, 4);
+  VERIFY( csz01 == 4 );
+
+  // An empty string_view consists of no characters
+  // therefore it should be found at every point in a string_view,
+  // except beyond the end
+  // However, str1.find_first_of(str2,pos) finds the first character in 
+  // str1 (starting at pos) that exists in str2, which is none for empty str2
+  csz01 = str01.find_first_of(str04, 0);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find_first_of(str04, 5);
+  VERIFY( csz01 == npos );
+  
+  // size_type find_first_of(const char* s, size_type pos, size_type n) const;
+  csz01 = str01.find_first_of(str_lit01, 0, 3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_of(str_lit01, 3, 0);
+  VERIFY( csz01 == npos );
+
+  // size_type find_first_of(const char* s, size_type pos = 0) const;
+  csz01 = str01.find_first_of(str_lit01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_of(str_lit01, 3);
+  VERIFY( csz01 == 3 );
+
+  // size_type find_first_of(char c, size_type pos = 0) const;
+  csz01 = str01.find_first_of('z');
+  csz02 = str01.size() - 1;
+  VERIFY( csz01 == csz02 );
+
+  return test;
+}
+
+int
+main()
+{ 
+  test02();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/find/char/3.cc
===================================================================
--- testsuite/experimental/string_view/operations/find/char/3.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/find/char/3.cc	(working copy)
@@ -0,0 +1,97 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.5 basic_string_view find_first_not_of
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+bool
+test03()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::string_view::size_type csize_type;
+  csize_type npos = std::experimental::string_view::npos;
+  csize_type csz01;
+
+  const std::experimental::string_view str01("Bob Rock, per me");
+  const char str_lit01[] = "Bob Rock";
+  std::experimental::string_view str02("ovvero Trivi");
+  std::experimental::string_view str03(str_lit01);
+  std::experimental::string_view str04;
+
+  // size_type find_first_not_of(const string_view&, size_type pos = 0) const;
+  csz01 = str01.find_first_not_of(str01);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find_first_not_of(str02, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_not_of(str02, 10);
+  VERIFY( csz01 == 10 );
+  csz01 = str01.find_first_not_of(str02, 12);
+  VERIFY( csz01 == 14 );
+  csz01 = str01.find_first_not_of(str03, 0);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find_first_not_of(str03, 15);
+  VERIFY( csz01 == 15 );
+  csz01 = str01.find_first_not_of(str03, 16);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find_first_not_of(str04, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_not_of(str04, 12);
+  VERIFY( csz01 == 12 );
+  csz01 = str03.find_first_not_of(str01, 0);
+  VERIFY( csz01 == npos );
+  csz01 = str04.find_first_not_of(str02, 0);
+  VERIFY( csz01 == npos );
+
+  // size_type find_first_not_of(const char* s, size_type pos, size_type n) const;
+  csz01 = str01.find_first_not_of(str_lit01, 0, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_not_of(str_lit01, 0, 8);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find_first_not_of(str_lit01, 10, 0);
+  VERIFY( csz01 == 10 );
+
+  // size_type find_first_not_of(const char* s, size_type pos = 0) const;
+  csz01 = str01.find_first_not_of(str_lit01);
+  VERIFY( csz01 == 8 );
+  csz01 = str02.find_first_not_of(str_lit01, 2);
+  VERIFY( csz01 == 2 );
+
+  // size_type find_first_not_of(char c, size_type pos = 0) const;
+  csz01 = str01.find_first_not_of('B');
+  VERIFY( csz01 == 1 );
+  csz01 = str01.find_first_not_of('o', 1);
+  VERIFY( csz01 == 2 );
+  csz01 = str02.find_first_not_of('z');
+  VERIFY( csz01 == 0 );
+  csz01 = str04.find_first_not_of('S');
+  VERIFY( csz01 == npos );
+
+  return test;
+}
+
+int
+main()
+{ 
+  test03();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/find/char/4.cc
===================================================================
--- testsuite/experimental/string_view/operations/find/char/4.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/find/char/4.cc	(working copy)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.1 basic_string_view find
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// libstdc++/31401
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::string_view::size_type csize_type;
+  csize_type npos = std::experimental::string_view::npos;
+
+  std::experimental::string_view use = "anu";
+  csize_type pos1 = use.find("a", npos);
+
+  VERIFY( pos1 == npos );
+}
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/find/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/find/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/find/wchar_t/1.cc	(working copy)
@@ -0,0 +1,98 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.1 basic_string_view find
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::wstring_view::size_type csize_type;
+  typedef std::experimental::wstring_view::const_reference cref;
+  typedef std::experimental::wstring_view::reference ref;
+  csize_type npos = std::experimental::wstring_view::npos;
+  csize_type csz01, csz02;
+
+  const wchar_t str_lit01[] = L"mave";
+  const std::experimental::wstring_view str01(L"mavericks, santa cruz");
+  std::experimental::wstring_view str02(str_lit01);
+  std::experimental::wstring_view str03(L"s, s");
+  std::experimental::wstring_view str04;
+
+  // size_type find(const wstring_view&, size_type pos = 0) const;
+  csz01 = str01.find(str01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str01, 4);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find(str02, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str02, 3);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find(str03, 0);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find(str03, 3);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find(str03, 12);
+  VERIFY( csz01 == npos );
+
+  // An empty string_view consists of no characters
+  // therefore it should be found at every point in a string_view,
+  // except beyond the end
+  csz01 = str01.find(str04, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str04, 5);
+  VERIFY( csz01 == 5 );
+  csz01 = str01.find(str04, str01.size());
+  VERIFY( csz01 == str01.size() ); 
+  csz01 = str01.find(str04, str01.size()+1);
+  VERIFY( csz01 == npos ); 
+  
+  // size_type find(const wchar_t* s, size_type pos, size_type n) const;
+  csz01 = str01.find(str_lit01, 0, 3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str_lit01, 3, 0);
+  VERIFY( csz01 == 3 );
+
+  // size_type find(const wchar_t* s, size_type pos = 0) const;
+  csz01 = str01.find(str_lit01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find(str_lit01, 3);
+  VERIFY( csz01 == npos );
+
+  // size_type find(wchar_t c, size_type pos = 0) const;
+  csz01 = str01.find(L'z');
+  csz02 = str01.size() - 1;
+  VERIFY( csz01 == csz02 );
+  csz01 = str01.find(L'/');
+  VERIFY( csz01 == npos );
+
+  return test;
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/find/wchar_t/2.cc
===================================================================
--- testsuite/experimental/string_view/operations/find/wchar_t/2.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/find/wchar_t/2.cc	(working copy)
@@ -0,0 +1,97 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.3 basic_string_view find_first_of
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+bool
+test02()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::wstring_view::size_type csize_type;
+  csize_type npos = std::experimental::wstring_view::npos;
+  csize_type csz01, csz02;
+
+  const wchar_t str_lit01[] = L"mave";
+  const std::experimental::wstring_view str01(L"mavericks, santa cruz");
+  std::experimental::wstring_view str02(str_lit01);
+  std::experimental::wstring_view str03(L"s, s");
+  std::experimental::wstring_view str04;
+
+  // size_type find_first_of(const wstring_view&, size_type pos = 0) const;
+  std::experimental::wstring_view str05(L"xena rulez");
+  csz01 = str01.find_first_of(str01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_of(str01, 4);
+  VERIFY( csz01 == 4 );
+  csz01 = str01.find_first_of(str02, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_of(str02, 3);
+  VERIFY( csz01 == 3 );
+  csz01 = str01.find_first_of(str03, 0);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find_first_of(str03, 3);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find_first_of(str03, 12);
+  VERIFY( csz01 == 16 );
+  csz01 = str01.find_first_of(str05, 0);
+  VERIFY( csz01 == 1 );
+  csz01 = str01.find_first_of(str05, 4);
+  VERIFY( csz01 == 4 );
+
+  // An empty string_view consists of no characters
+  // therefore it should be found at every point in a string_view,
+  // except beyond the end
+  // However, str1.find_first_of(str2,pos) finds the first character in 
+  // str1 (starting at pos) that exists in str2, which is none for empty str2
+  csz01 = str01.find_first_of(str04, 0);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find_first_of(str04, 5);
+  VERIFY( csz01 == npos );
+  
+  // size_type find_first_of(const wchar_t* s, size_type pos, size_type n) const;
+  csz01 = str01.find_first_of(str_lit01, 0, 3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_of(str_lit01, 3, 0);
+  VERIFY( csz01 == npos );
+
+  // size_type find_first_of(const wchar_t* s, size_type pos = 0) const;
+  csz01 = str01.find_first_of(str_lit01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_of(str_lit01, 3);
+  VERIFY( csz01 == 3 );
+
+  // size_type find_first_of(wchar_t c, size_type pos = 0) const;
+  csz01 = str01.find_first_of(L'z');
+  csz02 = str01.size() - 1;
+  VERIFY( csz01 == csz02 );
+
+  return test;
+}
+
+int
+main()
+{ 
+  test02();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/find/wchar_t/3.cc
===================================================================
--- testsuite/experimental/string_view/operations/find/wchar_t/3.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/find/wchar_t/3.cc	(working copy)
@@ -0,0 +1,97 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.5 basic_string_view find_first_not_of
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+bool
+test03()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::wstring_view::size_type csize_type;
+  csize_type npos = std::experimental::wstring_view::npos;
+  csize_type csz01;
+
+  const std::experimental::wstring_view str01(L"Bob Rock, per me");
+  const wchar_t str_lit01[] = L"Bob Rock";
+  std::experimental::wstring_view str02(L"ovvero Trivi");
+  std::experimental::wstring_view str03(str_lit01);
+  std::experimental::wstring_view str04;
+
+  // size_type find_first_not_of(const string_view&, size_type pos = 0) const;
+  csz01 = str01.find_first_not_of(str01);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find_first_not_of(str02, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_not_of(str02, 10);
+  VERIFY( csz01 == 10 );
+  csz01 = str01.find_first_not_of(str02, 12);
+  VERIFY( csz01 == 14 );
+  csz01 = str01.find_first_not_of(str03, 0);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find_first_not_of(str03, 15);
+  VERIFY( csz01 == 15 );
+  csz01 = str01.find_first_not_of(str03, 16);
+  VERIFY( csz01 == npos );
+  csz01 = str01.find_first_not_of(str04, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_not_of(str04, 12);
+  VERIFY( csz01 == 12 );
+  csz01 = str03.find_first_not_of(str01, 0);
+  VERIFY( csz01 == npos );
+  csz01 = str04.find_first_not_of(str02, 0);
+  VERIFY( csz01 == npos );
+
+  // size_type find_first_not_of(const char* s, size_type pos, size_type n) const;
+  csz01 = str01.find_first_not_of(str_lit01, 0, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.find_first_not_of(str_lit01, 0, 8);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.find_first_not_of(str_lit01, 10, 0);
+  VERIFY( csz01 == 10 );
+
+  // size_type find_first_not_of(const char* s, size_type pos = 0) const;
+  csz01 = str01.find_first_not_of(str_lit01);
+  VERIFY( csz01 == 8 );
+  csz01 = str02.find_first_not_of(str_lit01, 2);
+  VERIFY( csz01 == 2 );
+
+  // size_type find_first_not_of(char c, size_type pos = 0) const;
+  csz01 = str01.find_first_not_of(L'B');
+  VERIFY( csz01 == 1 );
+  csz01 = str01.find_first_not_of(L'o', 1);
+  VERIFY( csz01 == 2 );
+  csz01 = str02.find_first_not_of(L'z');
+  VERIFY( csz01 == 0 );
+  csz01 = str04.find_first_not_of(L'S');
+  VERIFY( csz01 == npos );
+
+  return test;
+}
+
+int
+main()
+{ 
+  test03();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/find/wchar_t/4.cc
===================================================================
--- testsuite/experimental/string_view/operations/find/wchar_t/4.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/find/wchar_t/4.cc	(working copy)
@@ -0,0 +1,46 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.1 basic_string_view find
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// libstdc++/31401
+void
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::wstring_view::size_type csize_type;
+  csize_type npos = std::experimental::wstring_view::npos;
+
+  std::experimental::wstring_view use = L"anu";
+  csize_type pos1 = use.find(L"a", npos);
+
+  VERIFY( pos1 == npos );
+}
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/rfind/char/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/rfind/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/rfind/char/1.cc	(working copy)
@@ -0,0 +1,97 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// 21.3.6.2 basic_string_view rfind
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::string_view::size_type csize_type;
+  typedef std::experimental::string_view::const_reference cref;
+  typedef std::experimental::string_view::reference ref;
+  csize_type npos = std::experimental::string_view::npos;
+  csize_type csz01, csz02;
+
+  const char str_lit01[] = "mave";
+  const std::experimental::string_view str01("mavericks, santa cruz");
+  std::experimental::string_view str02(str_lit01);
+  std::experimental::string_view str03("s, s");
+  std::experimental::string_view str04;
+
+  // size_type rfind(const string_view&, size_type pos = 0) const;
+  csz01 = str01.rfind(str01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str01, 4);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str02,3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str02);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str03);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.rfind(str03, 3);
+  VERIFY( csz01 == npos );
+  csz01 = str01.rfind(str03, 12);
+  VERIFY( csz01 == 8 );
+
+  // An empty string_view consists of no characters
+  // therefore it should be found at every point in a string_view,
+  // except beyond the end
+  csz01 = str01.rfind(str04, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str04, 5);
+  VERIFY( csz01 == 5 );
+  csz01 = str01.rfind(str04, str01.size());
+  VERIFY( csz01 == str01.size() );
+  csz01 = str01.rfind(str04, str01.size()+1);
+  VERIFY( csz01 == str01.size() );
+
+  // size_type rfind(const char* s, size_type pos, size_type n) const;
+  csz01 = str01.rfind(str_lit01, 0, 3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str_lit01, 3, 0);
+  VERIFY( csz01 == 3 );
+
+  // size_type rfind(const char* s, size_type pos = 0) const;
+  csz01 = str01.rfind(str_lit01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str_lit01, 3);
+  VERIFY( csz01 == 0 );
+
+  // size_type rfind(char c, size_type pos = 0) const;
+  csz01 = str01.rfind('z');
+  csz02 = str01.size() - 1;
+  VERIFY( csz01 == csz02 );
+  csz01 = str01.rfind('/');
+  VERIFY( csz01 == npos );
+
+  return test;
+}
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/rfind/char/2.cc
===================================================================
--- testsuite/experimental/string_view/operations/rfind/char/2.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/rfind/char/2.cc	(working copy)
@@ -0,0 +1,56 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// { dg-options "-std=gnu++1y" }
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// 21.3.6.4 basic_string_view::find_last_of
+bool
+test02()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::string_view z("ab");
+  std::experimental::string_view::size_type pos;
+  pos = z.find_last_of("ab");
+  VERIFY( pos == 1 );
+  pos = z.find_last_of("Xa");
+  VERIFY( pos == 0 );
+  pos = z.find_last_of("Xb");
+  VERIFY( pos == 1 );
+  pos = z.find_last_of("XYZ");
+  VERIFY( pos == std::experimental::string_view::npos );
+  pos = z.find_last_of('a');
+  VERIFY( pos == 0 );
+  pos = z.find_last_of('b');
+  VERIFY( pos == 1 );
+  pos = z.find_last_of('X');
+  VERIFY( pos == std::experimental::string_view::npos );
+
+  return test;
+}
+
+int
+main()
+{
+  test02();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/rfind/char/3.cc
===================================================================
--- testsuite/experimental/string_view/operations/rfind/char/3.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/rfind/char/3.cc	(working copy)
@@ -0,0 +1,69 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// 21.3.6.6 basic_string_view::find_last_not_of
+bool
+test03()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::string_view::size_type csize_type;
+  std::experimental::string_view::size_type pos;
+  csize_type npos = std::experimental::string_view::npos;
+
+  std::experimental::string_view x;
+  pos = x.find_last_not_of('X');
+  VERIFY( pos == npos );
+  pos = x.find_last_not_of("XYZ");
+  VERIFY( pos == npos );
+
+  std::experimental::string_view y("a");
+  pos = y.find_last_not_of('X');
+  VERIFY( pos == 0 );
+  pos = y.find_last_not_of('a');
+  VERIFY( pos == npos );
+  pos = y.find_last_not_of("XYZ");
+  VERIFY( pos == 0 );
+  pos = y.find_last_not_of("a");
+  VERIFY( pos == npos );
+
+  std::experimental::string_view z("ab");
+  pos = z.find_last_not_of('X');
+  VERIFY( pos == 1 );
+  pos = z.find_last_not_of("XYZ");
+  VERIFY( pos == 1 );
+  pos = z.find_last_not_of('b');
+  VERIFY( pos == 0 );
+  pos = z.find_last_not_of("Xb");
+  VERIFY( pos == 0 );
+  pos = z.find_last_not_of("Xa");
+  VERIFY( pos == 1 );
+
+  return test;
+}
+int
+main()
+{
+  test03();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/rfind/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/rfind/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/rfind/wchar_t/1.cc	(working copy)
@@ -0,0 +1,97 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// 21.3.6.2 basic_string_view rfind
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::wstring_view::size_type csize_type;
+  typedef std::experimental::wstring_view::const_reference cref;
+  typedef std::experimental::wstring_view::reference ref;
+  csize_type npos = std::experimental::wstring_view::npos;
+  csize_type csz01, csz02;
+
+  const wchar_t str_lit01[] = L"mave";
+  const std::experimental::wstring_view str01(L"mavericks, santa cruz");
+  std::experimental::wstring_view str02(str_lit01);
+  std::experimental::wstring_view str03(L"s, s");
+  std::experimental::wstring_view str04;
+
+  // size_type rfind(const wstring_view&, size_type pos = 0) const;
+  csz01 = str01.rfind(str01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str01, 4);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str02,3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str02);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str03);
+  VERIFY( csz01 == 8 );
+  csz01 = str01.rfind(str03, 3);
+  VERIFY( csz01 == npos );
+  csz01 = str01.rfind(str03, 12);
+  VERIFY( csz01 == 8 );
+
+  // An empty string_view consists of no characters
+  // therefore it should be found at every point in a string_view,
+  // except beyond the end
+  csz01 = str01.rfind(str04, 0);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str04, 5);
+  VERIFY( csz01 == 5 );
+  csz01 = str01.rfind(str04, str01.size());
+  VERIFY( csz01 == str01.size() );
+  csz01 = str01.rfind(str04, str01.size()+1);
+  VERIFY( csz01 == str01.size() );
+
+  // size_type rfind(const wchar_t* s, size_type pos, size_type n) const;
+  csz01 = str01.rfind(str_lit01, 0, 3);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str_lit01, 3, 0);
+  VERIFY( csz01 == 3 );
+
+  // size_type rfind(const wchar_t* s, size_type pos = 0) const;
+  csz01 = str01.rfind(str_lit01);
+  VERIFY( csz01 == 0 );
+  csz01 = str01.rfind(str_lit01, 3);
+  VERIFY( csz01 == 0 );
+
+  // size_type rfind(wchar_t c, size_type pos = 0) const;
+  csz01 = str01.rfind(L'z');
+  csz02 = str01.size() - 1;
+  VERIFY( csz01 == csz02 );
+  csz01 = str01.rfind(L'/');
+  VERIFY( csz01 == npos );
+
+  return test;
+}
+
+int
+main()
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/rfind/wchar_t/2.cc
===================================================================
--- testsuite/experimental/string_view/operations/rfind/wchar_t/2.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/rfind/wchar_t/2.cc	(working copy)
@@ -0,0 +1,55 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// 21.3.6.4 basic_string_view::find_last_of
+bool
+test02()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::wstring_view::size_type pos;
+  std::experimental::wstring_view z(L"ab");
+  pos = z.find_last_of(L"ab");
+  VERIFY( pos == 1 );
+  pos = z.find_last_of(L"Xa");
+  VERIFY( pos == 0 );
+  pos = z.find_last_of(L"Xb");
+  VERIFY( pos == 1 );
+  pos = z.find_last_of(L"XYZ");
+  VERIFY( pos == std::experimental::wstring_view::npos );
+  pos = z.find_last_of(L'a');
+  VERIFY( pos == 0 );
+  pos = z.find_last_of(L'b');
+  VERIFY( pos == 1 );
+  pos = z.find_last_of(L'X');
+  VERIFY( pos == std::experimental::wstring_view::npos );
+
+  return test;
+}
+
+int
+main()
+{
+  test02();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/rfind/wchar_t/3.cc
===================================================================
--- testsuite/experimental/string_view/operations/rfind/wchar_t/3.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/rfind/wchar_t/3.cc	(working copy)
@@ -0,0 +1,69 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+// 21.3.6.6 basic_string_view::find_last_not_of
+bool
+test03()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::wstring_view::size_type csize_type;
+  std::experimental::wstring_view::size_type pos;
+  csize_type npos = std::experimental::wstring_view::npos;
+
+  std::experimental::wstring_view x;
+  pos = x.find_last_not_of(L'X');
+  VERIFY( pos == npos );
+  pos = x.find_last_not_of(L"XYZ");
+  VERIFY( pos == npos );
+
+  std::experimental::wstring_view y(L"a");
+  pos = y.find_last_not_of(L'X');
+  VERIFY( pos == 0 );
+  pos = y.find_last_not_of(L'a');
+  VERIFY( pos == npos );
+  pos = y.find_last_not_of(L"XYZ");
+  VERIFY( pos == 0 );
+  pos = y.find_last_not_of(L"a");
+  VERIFY( pos == npos );
+
+  std::experimental::wstring_view z(L"ab");
+  pos = z.find_last_not_of(L'X');
+  VERIFY( pos == 1 );
+  pos = z.find_last_not_of(L"XYZ");
+  VERIFY( pos == 1 );
+  pos = z.find_last_not_of(L'b');
+  VERIFY( pos == 0 );
+  pos = z.find_last_not_of(L"Xb");
+  VERIFY( pos == 0 );
+  pos = z.find_last_not_of(L"Xa");
+  VERIFY( pos == 1 );
+
+  return test;
+}
+int
+main()
+{
+  test03();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/substr/char/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/substr/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/substr/char/1.cc	(working copy)
@@ -0,0 +1,85 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.7 basic_string_view::substr
+
+#include <experimental/string_view>
+#include <stdexcept>
+#include <testsuite_hooks.h>
+
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::string_view::size_type csize_type;
+  typedef std::experimental::string_view::const_reference cref;
+  typedef std::experimental::string_view::reference ref;
+  csize_type csz01;
+
+  const char str_lit01[] = "rockaway, pacifica";
+  const std::experimental::string_view str01(str_lit01);
+  std::experimental::string_view str02;
+
+  // basic_string_view<charT, _Traits, _Alloc>
+  //  substr(size_type pos = 0, size_type n = npos) const;
+  csz01 = str01.size();
+  str02 = str01.substr(0, 1);
+  VERIFY( str02 == "r" );
+  str02 = str01.substr(10);
+  VERIFY( str02 == "pacifica" );
+
+  try
+  {
+    str02 = str01.substr(csz01 + 1);
+    VERIFY( false ); 
+  }
+  catch(std::out_of_range& fail)
+  {
+    VERIFY( true );
+  }
+  catch(...)
+  {
+    VERIFY( false );
+  }
+
+  try
+  {
+    str02 = str01.substr(csz01);
+    VERIFY( str02.size() == 0 );
+  }
+  catch(std::out_of_range& fail)
+  {
+    VERIFY( true ); // No terminating null in basic_string_view
+  }
+  catch(...)
+  {
+    VERIFY( false );
+  }
+
+  return test;
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operations/substr/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/operations/substr/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/operations/substr/wchar_t/1.cc	(working copy)
@@ -0,0 +1,85 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.6.7 basic_string_view::substr
+
+#include <experimental/string_view>
+#include <stdexcept>
+#include <testsuite_hooks.h>
+
+bool
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  typedef std::experimental::wstring_view::size_type csize_type;
+  typedef std::experimental::wstring_view::const_reference cref;
+  typedef std::experimental::wstring_view::reference ref;
+  csize_type csz01;
+
+  const wchar_t str_lit01[] = L"rockaway, pacifica";
+  const std::experimental::wstring_view str01(str_lit01);
+  std::experimental::wstring_view str02;
+
+  // basic_string_view<charT, _Traits, _Alloc>
+  //  substr(size_type pos = 0, size_type n = npos) const;
+  csz01 = str01.size();
+  str02 = str01.substr(0, 1);
+  VERIFY( str02 == L"r" );
+  str02 = str01.substr(10);
+  VERIFY( str02 == L"pacifica" );
+
+  try
+  {
+    str02 = str01.substr(csz01 + 1);
+    VERIFY( false ); 
+  }
+  catch(std::out_of_range& fail)
+  {
+    VERIFY( true );
+  }
+  catch(...)
+  {
+    VERIFY( false );
+  }
+
+  try
+  {
+    str02 = str01.substr(csz01);
+    VERIFY( str02.size() == 0 );
+  }
+  catch(std::out_of_range& fail)
+  {
+    VERIFY( true ); // No terminating null in basic_string_view
+  }
+  catch(...)
+  {
+    VERIFY( false );
+  }
+
+  return test;
+}
+
+int
+main()
+{ 
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operators/char/2.cc
===================================================================
--- testsuite/experimental/string_view/operators/char/2.cc	(revision 0)
+++ testsuite/experimental/string_view/operators/char/2.cc	(working copy)
@@ -0,0 +1,246 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.7.1 basic_string non-member functions
+
+// 21.3.7.2 operator==
+/*
+template<class charT, class traits, class Allocator>
+  bool operator==(const basic_string<charT,traits,Allocator>& lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator==(const charT* lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator==(const basic_string<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+*/
+
+// 21.3.7.3 operator!=
+/*
+template<class charT, class traits, class Allocator>
+  bool operator!=(const basic_string<charT,traits,Allocator>& lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator!=(const charT* lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator!=(const basic_string<charT,traits,Allocator>& lhs, 
+                  const charT* rhs);
+*/
+
+// 21.3.7.4 operator<
+/*
+template<class charT, class traits, class Allocator>
+  bool operator< (const basic_string<charT,traits,Allocator>& lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator< (const basic_string<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator< (const charT* lhs, 
+                  const basic_string<charT,traits,Allocator>& rhs);
+*/
+
+// 21.3.7.5 operator>
+/*
+template<class charT, class traits, class Allocator>
+  bool operator> (const basic_string<charT,traits,Allocator>& lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator> (const basic_string<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator> (const charT* lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+*/
+
+//21.3.7.6 operator<=
+/*
+template<class charT, class traits, class Allocator>
+  bool operator<=(const basic_string<charT,traits,Allocator>& lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator<=(const basic_string<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator<=(const charT* lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+*/
+
+// 21.3.7.7 operator>=
+/*
+template<class charT, class traits, class Allocator>
+  bool operator>=(const basic_string<charT,traits,Allocator>& lhs,
+                const basic_string<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator>=(const basic_string<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator>=(const charT* lhs,
+                  const basic_string<charT,traits,Allocator>& rhs);
+*/
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+int
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::string_view 	str_0("costa rica");
+  std::experimental::string_view 	str_1("costa marbella");
+  std::experimental::string_view 	str_2("cost");
+  std::experimental::string_view	str_3("costa ricans");
+  std::experimental::string_view        str_4;
+  
+  str_4 = str_0;
+  //comparisons between string objects
+  VERIFY( !(str_0 == str_1) );
+  VERIFY( !(str_0 == str_2) );
+  VERIFY( !(str_0 == str_3) );
+  VERIFY( !(str_1 == str_0) );
+  VERIFY( !(str_2 == str_0) );
+  VERIFY( !(str_3 == str_0) );
+  VERIFY( str_4 == str_0 );
+  VERIFY( str_0 == str_4 );
+
+  VERIFY( str_0 != str_1 );
+  VERIFY( str_0 != str_2 );
+  VERIFY( str_0 != str_3 );
+  VERIFY( str_1 != str_0 );
+  VERIFY( str_2 != str_0 );
+  VERIFY( str_3 != str_0 );
+  VERIFY( !(str_0 != str_4) );
+  VERIFY( !(str_4 != str_0) );
+   
+  VERIFY( str_0 > str_1 ); //true cuz r>m
+  VERIFY( str_0 > str_2 );
+  VERIFY( !(str_0 > str_3) );
+  VERIFY( !(str_1 > str_0) ); //false cuz m<r
+  VERIFY( !(str_2 > str_0) );
+  VERIFY( str_3 > str_0 );
+  VERIFY( !(str_0 > str_4) );
+  VERIFY( !(str_4 > str_0) );
+
+  VERIFY( !(str_0 < str_1) ); //false cuz r>m
+  VERIFY( !(str_0 < str_2) );
+  VERIFY( str_0 < str_3 );
+  VERIFY( str_1 < str_0 ); //true cuz m<r
+  VERIFY( str_2 < str_0 );
+  VERIFY( !(str_3 < str_0) );
+  VERIFY( !(str_0 < str_4) );
+  VERIFY( !(str_4 < str_0) );
+
+  VERIFY( str_0 >= str_1 ); //true cuz r>m
+  VERIFY( str_0 >= str_2 );
+  VERIFY( !(str_0 >= str_3) );
+  VERIFY( !(str_1 >= str_0) );//false cuz m<r
+  VERIFY( !(str_2 >= str_0) );
+  VERIFY( str_3 >= str_0 );
+  VERIFY( str_0 >= str_4 );
+  VERIFY( str_4 >= str_0 );
+
+  VERIFY( !(str_0 <= str_1) );//false cuz r>m
+  VERIFY( !(str_0 <= str_2) );
+  VERIFY( str_0 <= str_3 );
+  VERIFY( str_1 <= str_0 );//true cuz m<r
+  VERIFY( str_2 <= str_0 );
+  VERIFY( !(str_3 <= str_0) );
+  VERIFY( str_0 <= str_4 );
+  VERIFY( str_4 <= str_0 );
+
+  //comparisons between string object and string literal
+  VERIFY( !(str_0 == "costa marbella") );
+  VERIFY( !(str_0 == "cost") );
+  VERIFY( !(str_0 == "costa ricans") );
+  VERIFY( !("costa marbella" == str_0) );
+  VERIFY( !("cost" == str_0) );
+  VERIFY( !("costa ricans" == str_0) );
+  VERIFY( "costa rica" == str_0 );
+  VERIFY( str_0 == "costa rica" );
+
+  VERIFY( str_0 != "costa marbella" );
+  VERIFY( str_0 != "cost" );
+  VERIFY( str_0 != "costa ricans" );
+  VERIFY( "costa marbella" != str_0 );
+  VERIFY( "cost" != str_0 );
+  VERIFY( "costa ricans" != str_0 );
+  VERIFY( !("costa rica" != str_0) );
+  VERIFY( !(str_0 != "costa rica") );
+
+  VERIFY( str_0 > "costa marbella" ); //true cuz r>m
+  VERIFY( str_0 > "cost" );
+  VERIFY( !(str_0 > "costa ricans") );
+  VERIFY( !("costa marbella" > str_0) );//false cuz m<r
+  VERIFY( !("cost" > str_0) );
+  VERIFY( "costa ricans" > str_0 );
+  VERIFY( !("costa rica" > str_0) );
+  VERIFY( !(str_0 > "costa rica") );
+
+  VERIFY( !(str_0 < "costa marbella") );//false cuz r>m
+  VERIFY( !(str_0 < "cost") );
+  VERIFY( str_0 < "costa ricans" );
+  VERIFY( "costa marbella" < str_0 );//true cuz m<r
+  VERIFY( "cost" < str_0 );
+  VERIFY( !("costa ricans" < str_0) );
+  VERIFY( !("costa rica" < str_0) );
+  VERIFY( !(str_0 < "costa rica") );
+
+  VERIFY( str_0 >= "costa marbella" );//true cuz r>m
+  VERIFY( str_0 >= "cost" );
+  VERIFY( !(str_0 >= "costa ricans") );
+  VERIFY( !("costa marbella" >= str_0) );//false cuz m<r
+  VERIFY( !("cost" >= str_0) );
+  VERIFY( "costa ricans" >= str_0 );
+  VERIFY( "costa rica" >= str_0 );
+  VERIFY( str_0 >= "costa rica" );
+
+  VERIFY( !(str_0 <= "costa marbella") );//false cuz r>m
+  VERIFY( !(str_0 <= "cost") );
+  VERIFY( str_0 <= "costa ricans" );
+  VERIFY( "costa marbella" <= str_0 );//true cuz m<r
+  VERIFY( "cost" <= str_0 );
+  VERIFY( !("costa ricans" <= str_0) );
+  VERIFY( "costa rica" <= str_0 );
+  VERIFY( str_0 <= "costa rica" );
+
+  return 0;
+}
+
+int
+main() 
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/operators/wchar_t/2.cc
===================================================================
--- testsuite/experimental/string_view/operators/wchar_t/2.cc	(revision 0)
+++ testsuite/experimental/string_view/operators/wchar_t/2.cc	(working copy)
@@ -0,0 +1,246 @@
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 21.3.7.1 basic_string_view non-member functions
+
+// 21.3.7.2 operator==
+/*
+template<class charT, class traits, class Allocator>
+  bool operator==(const basic_string_view<charT,traits,Allocator>& lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator==(const charT* lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator==(const basic_string_view<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+*/
+
+// 21.3.7.3 operator!=
+/*
+template<class charT, class traits, class Allocator>
+  bool operator!=(const basic_string_view<charT,traits,Allocator>& lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator!=(const charT* lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator!=(const basic_string_view<charT,traits,Allocator>& lhs, 
+                  const charT* rhs);
+*/
+
+// 21.3.7.4 operator<
+/*
+template<class charT, class traits, class Allocator>
+  bool operator< (const basic_string_view<charT,traits,Allocator>& lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator< (const basic_string_view<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator< (const charT* lhs, 
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+*/
+
+// 21.3.7.5 operator>
+/*
+template<class charT, class traits, class Allocator>
+  bool operator> (const basic_string_view<charT,traits,Allocator>& lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator> (const basic_string_view<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator> (const charT* lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+*/
+
+//21.3.7.6 operator<=
+/*
+template<class charT, class traits, class Allocator>
+  bool operator<=(const basic_string_view<charT,traits,Allocator>& lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator<=(const basic_string_view<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator<=(const charT* lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+*/
+
+// 21.3.7.7 operator>=
+/*
+template<class charT, class traits, class Allocator>
+  bool operator>=(const basic_string_view<charT,traits,Allocator>& lhs,
+                const basic_string_view<charT,traits,Allocator>& rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator>=(const basic_string_view<charT,traits,Allocator>& lhs,
+                  const charT* rhs);
+
+template<class charT, class traits, class Allocator>
+  bool operator>=(const charT* lhs,
+                  const basic_string_view<charT,traits,Allocator>& rhs);
+*/
+
+#include <experimental/string_view>
+#include <testsuite_hooks.h>
+
+int
+test01()
+{
+  bool test [[gnu::unused]] = true;
+
+  std::experimental::wstring_view 	str_0(L"costa rica");
+  std::experimental::wstring_view 	str_1(L"costa marbella");
+  std::experimental::wstring_view 	str_2(L"cost");
+  std::experimental::wstring_view	str_3(L"costa ricans");
+  std::experimental::wstring_view  str_4;
+  
+  str_4 = str_0;
+  //comparisons between string_view objects
+  VERIFY( !(str_0 == str_1) );
+  VERIFY( !(str_0 == str_2) );
+  VERIFY( !(str_0 == str_3) );
+  VERIFY( !(str_1 == str_0) );
+  VERIFY( !(str_2 == str_0) );
+  VERIFY( !(str_3 == str_0) );
+  VERIFY( str_4 == str_0 );
+  VERIFY( str_0 == str_4 );
+
+  VERIFY( str_0 != str_1 );
+  VERIFY( str_0 != str_2 );
+  VERIFY( str_0 != str_3 );
+  VERIFY( str_1 != str_0 );
+  VERIFY( str_2 != str_0 );
+  VERIFY( str_3 != str_0 );
+  VERIFY( !(str_0 != str_4) );
+  VERIFY( !(str_4 != str_0) );
+   
+  VERIFY( str_0 > str_1 ); //true cuz r>m
+  VERIFY( str_0 > str_2 );
+  VERIFY( !(str_0 > str_3) );
+  VERIFY( !(str_1 > str_0) ); //false cuz m<r
+  VERIFY( !(str_2 > str_0) );
+  VERIFY( str_3 > str_0 );
+  VERIFY( !(str_0 > str_4) );
+  VERIFY( !(str_4 > str_0) );
+
+  VERIFY( !(str_0 < str_1) ); //false cuz r>m
+  VERIFY( !(str_0 < str_2) );
+  VERIFY( str_0 < str_3 );
+  VERIFY( str_1 < str_0 ); //true cuz m<r
+  VERIFY( str_2 < str_0 );
+  VERIFY( !(str_3 < str_0) );
+  VERIFY( !(str_0 < str_4) );
+  VERIFY( !(str_4 < str_0) );
+
+  VERIFY( str_0 >= str_1 ); //true cuz r>m
+  VERIFY( str_0 >= str_2 );
+  VERIFY( !(str_0 >= str_3) );
+  VERIFY( !(str_1 >= str_0) );//false cuz m<r
+  VERIFY( !(str_2 >= str_0) );
+  VERIFY( str_3 >= str_0 );
+  VERIFY( str_0 >= str_4 );
+  VERIFY( str_4 >= str_0 );
+
+  VERIFY( !(str_0 <= str_1) );//false cuz r>m
+  VERIFY( !(str_0 <= str_2) );
+  VERIFY( str_0 <= str_3 );
+  VERIFY( str_1 <= str_0 );//true cuz m<r
+  VERIFY( str_2 <= str_0 );
+  VERIFY( !(str_3 <= str_0) );
+  VERIFY( str_0 <= str_4 );
+  VERIFY( str_4 <= str_0 );
+
+  //comparisons between string_view object and string_view literal
+  VERIFY( !(str_0 == L"costa marbella") );
+  VERIFY( !(str_0 == L"cost") );
+  VERIFY( !(str_0 == L"costa ricans") );
+  VERIFY( !(L"costa marbella" == str_0) );
+  VERIFY( !(L"cost" == str_0) );
+  VERIFY( !(L"costa ricans" == str_0) );
+  VERIFY( L"costa rica" == str_0 );
+  VERIFY( str_0 == L"costa rica" );
+
+  VERIFY( str_0 != L"costa marbella" );
+  VERIFY( str_0 != L"cost" );
+  VERIFY( str_0 != L"costa ricans" );
+  VERIFY( L"costa marbella" != str_0 );
+  VERIFY( L"cost" != str_0 );
+  VERIFY( L"costa ricans" != str_0 );
+  VERIFY( !(L"costa rica" != str_0) );
+  VERIFY( !(str_0 != L"costa rica") );
+
+  VERIFY( str_0 > L"costa marbella" ); //true cuz r>m
+  VERIFY( str_0 > L"cost" );
+  VERIFY( !(str_0 > L"costa ricans") );
+  VERIFY( !(L"costa marbella" > str_0) );//false cuz m<r
+  VERIFY( !(L"cost" > str_0) );
+  VERIFY( L"costa ricans" > str_0 );
+  VERIFY( !(L"costa rica" > str_0) );
+  VERIFY( !(str_0 > L"costa rica") );
+
+  VERIFY( !(str_0 < L"costa marbella") );//false cuz r>m
+  VERIFY( !(str_0 < L"cost") );
+  VERIFY( str_0 < L"costa ricans" );
+  VERIFY( L"costa marbella" < str_0 );//true cuz m<r
+  VERIFY( L"cost" < str_0 );
+  VERIFY( !(L"costa ricans" < str_0) );
+  VERIFY( !(L"costa rica" < str_0) );
+  VERIFY( !(str_0 < L"costa rica") );
+
+  VERIFY( str_0 >= L"costa marbella" );//true cuz r>m
+  VERIFY( str_0 >= L"cost" );
+  VERIFY( !(str_0 >= L"costa ricans") );
+  VERIFY( !(L"costa marbella" >= str_0) );//false cuz m<r
+  VERIFY( !(L"cost" >= str_0) );
+  VERIFY( L"costa ricans" >= str_0 );
+  VERIFY( L"costa rica" >= str_0 );
+  VERIFY( str_0 >= L"costa rica" );
+
+  VERIFY( !(str_0 <= L"costa marbella") );//false cuz r>m
+  VERIFY( !(str_0 <= L"cost") );
+  VERIFY( str_0 <= L"costa ricans" );
+  VERIFY( L"costa marbella" <= str_0 );//true cuz m<r
+  VERIFY( L"cost" <= str_0 );
+  VERIFY( !(L"costa ricans" <= str_0) );
+  VERIFY( L"costa rica" <= str_0 );
+  VERIFY( str_0 <= L"costa rica" );
+
+  return 0;
+}
+
+int
+main() 
+{
+  test01();
+
+  return 0;
+}
Index: testsuite/experimental/string_view/range_access/char/1.cc
===================================================================
--- testsuite/experimental/string_view/range_access/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/range_access/char/1.cc	(working copy)
@@ -0,0 +1,31 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 24.6.5, range access [iterator.range]
+
+#include <experimental/string_view>
+
+void
+test01()
+{
+  std::experimental::string_view s("Hello, World!");
+  std::begin(s);
+  std::end(s);
+}
Index: testsuite/experimental/string_view/range_access/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/range_access/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/range_access/wchar_t/1.cc	(working copy)
@@ -0,0 +1,33 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+// 24.6.5, range access [iterator.range]
+
+#include <experimental/string_view>
+
+void
+test01()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::experimental::wstring_view ws(L"Hello, World!");
+  std::begin(ws);
+  std::end(ws);
+#endif
+}
Index: testsuite/experimental/string_view/requirements/explicit_instantiation/1.cc
===================================================================
--- testsuite/experimental/string_view/requirements/explicit_instantiation/1.cc	(revision 0)
+++ testsuite/experimental/string_view/requirements/explicit_instantiation/1.cc	(working copy)
@@ -0,0 +1,27 @@
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+
+// This file tests explicit instantiation of basic_string
+
+#include <experimental/string_view>
+
+// { dg-do compile }
+// { dg-options "-std=gnu++1y" }
+
+// libstdc++/21770
+template class std::experimental::basic_string_view<int, std::char_traits<int>>;
Index: testsuite/experimental/string_view/requirements/explicit_instantiation/char/1.cc
===================================================================
--- testsuite/experimental/string_view/requirements/explicit_instantiation/char/1.cc	(revision 0)
+++ testsuite/experimental/string_view/requirements/explicit_instantiation/char/1.cc	(working copy)
@@ -0,0 +1,23 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+
+template class std::experimental::basic_string_view<char>;
Index: testsuite/experimental/string_view/requirements/explicit_instantiation/char16_t/1.cc
===================================================================
--- testsuite/experimental/string_view/requirements/explicit_instantiation/char16_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/requirements/explicit_instantiation/char16_t/1.cc	(working copy)
@@ -0,0 +1,24 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++1y" }
+// { dg-require-cstdint "" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+
+template class std::experimental::basic_string_view<char16_t>;
Index: testsuite/experimental/string_view/requirements/explicit_instantiation/char32_t/1.cc
===================================================================
--- testsuite/experimental/string_view/requirements/explicit_instantiation/char32_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/requirements/explicit_instantiation/char32_t/1.cc	(working copy)
@@ -0,0 +1,24 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++1y" }
+// { dg-require-cstdint "" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+
+template class std::experimental::basic_string_view<char32_t>;
Index: testsuite/experimental/string_view/requirements/explicit_instantiation/wchar_t/1.cc
===================================================================
--- testsuite/experimental/string_view/requirements/explicit_instantiation/wchar_t/1.cc	(revision 0)
+++ testsuite/experimental/string_view/requirements/explicit_instantiation/wchar_t/1.cc	(working copy)
@@ -0,0 +1,23 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++1y" }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+
+template class std::experimental::basic_string_view<wchar_t>;
Index: testsuite/experimental/string_view/requirements/typedefs.cc
===================================================================
--- testsuite/experimental/string_view/requirements/typedefs.cc	(revision 0)
+++ testsuite/experimental/string_view/requirements/typedefs.cc	(working copy)
@@ -0,0 +1,50 @@
+// { dg-options "-std=gnu++1y" }
+// { dg-do compile }
+
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <experimental/string_view>
+#include <testsuite_containers.h>
+
+namespace __gnu_test
+{
+  template<typename _Tp1, typename _Tp2>
+    struct traits<std::experimental::basic_string_view<_Tp1, _Tp2>> : public traits_base
+    {
+      typedef std::true_type    is_container;
+      typedef std::true_type    is_reversible;
+    };
+}
+
+#include <testsuite_containers.h>
+
+// Check container for required typedefs.
+
+__gnu_test::basic_types<std::experimental::string_view> t1b;
+__gnu_test::reversible_types<std::experimental::string_view> t1r;
+{
+  typedef typename std::experimental::string_view::traits_type traits_type;
+}
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+__gnu_test::basic_types<std::experimental::wstring_view> t2b;
+__gnu_test::reversible_types<std::experimental::wstring_view> t2r;
+{
+  typedef typename std::experimental::wstring_view::traits_type traits_type;
+}
+#endif
Index: testsuite/experimental/string_view/types/1.cc
===================================================================
--- testsuite/experimental/string_view/types/1.cc	(revision 0)
+++ testsuite/experimental/string_view/types/1.cc	(working copy)
@@ -0,0 +1,44 @@
+//
+// Copyright (C) 2013 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+//
+
+// { dg-options "-std=gnu++1y" }
+// { dg-do compile }
+
+#include <experimental/string_view>
+
+struct T
+{
+  typedef std::experimental::string_view String_view;
+  typedef String_view::iterator iterator;
+  typedef String_view::const_iterator const_iterator;
+
+  char t(iterator f)             { return *f; }
+  char t(const_iterator f) const { return *f; }
+};
+
+// libstdc++/23767
+void
+f()
+{
+  std::experimental::string_view s;
+  T t;
+  T::const_iterator i = s.begin();
+  
+  t.t(i);
+}


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