Make streams movable and swappable.

	PR libstdc++/54316
	PR libstdc++/53626
	* config/abi/pre/gnu.ver: Add new exports.
	* config/io/basic_file_stdio.h (__basic_file): Support moving and
	swapping.
	* include/bits/basic_ios.h (basic_ios::move, basic_ios::swap):
	Likewise.
	* include/bits/ios_base.h (ios_base::_M_move, ios_base::_M_swap):
	Likewise.
	* include/bits/fstream.tcc (basic_filebuf): Likewise.
	* include/bits/move.h (__exchange): Define for C++11 mode.
	* include/ext/stdio_filebuf.h (stdio_filebuf): Support moving and
	swapping.
	* include/ext/stdio_sync_filebuf.h (stdio_sync_filebuf): Likewise.
	* include/std/fstream (basic_filebuf, basic_ifstream, basic_ofstream,
	basic_fstream): Likewise.
	* include/std/ios: Remove whitespace.
	* include/std/istream (basic_istream, basic_iostream): Support moving
	and swapping.
	* include/std/ostream (basic_ostream): Likewise.
	* include/std/sstream (basic_stringbuf, basic_istringstream,
	basic_ostringstream, basic_stringstream): Likewise.
	* include/std/streambuf (basic_streambuf): Do not default copy
	constructor and assignment on first declaration.
	* include/std/utility (exchange): Forward to __exchange.
	* testsuite/27_io/basic_filebuf/cons/char/copy_neg.cc: New.
	* src/c++11/Makefile.am: Add stream-related files.
	* src/c++11/Makefile.in: Regenerate.
	* src/c++11/ext11-inst.cc (stdio_filebuf, stdio_sync_filebuf):
	New file for explicit instantiation definitions.
	* src/c++11/ios.cc: Move from src/c++98 to here.
	(ios_base::_M_move, ios_base::_M_swap): Define.
	* src/c++11/ios-inst.cc: Move from src/c++98 to here.
	* src/c++11/iostream-inst.cc: Likewise.
	* src/c++11/istream-inst.cc: Likewise.
	* src/c++11/ostream-inst.cc: Likewise.
	* src/c++11/sstream-inst.cc: Likewise.
	* src/c++11/streambuf-inst.cc: Likewise.
	* src/c++98/Makefile.am: Remove stream-related files.
	* src/c++98/Makefile.in: Regenerate.
	* src/c++98/ext-inst.cc (stdio_filebuf): Remove explicit
	instantiations.
	* src/c++98/misc-inst.cc (stdio_sync_filebuf): Likewise.
	* src/c++98/ios-inst.cc: Move to src/c++11/.
	* src/c++98/ios.cc: Move to src/c++11/.
	* src/c++98/iostream-inst.cc: Likewise.
	* src/c++98/istream-inst.cc: Likewise.
	* src/c++98/ostream-inst.cc: Likewise.
	* src/c++98/sstream-inst.cc: Likewise.
	* src/c++98/streambuf-inst.cc: Likewise.
	* testsuite/27_io/basic_filebuf/cons/char/copy_neg.cc: New.
	* testsuite/27_io/basic_fstream/cons/move.cc: New.
	* testsuite/27_io/basic_fstream/assign/1.cc: New.
	* testsuite/27_io/basic_ifstream/cons/move.cc: New.
	* testsuite/27_io/basic_ifstream/assign/1.cc: New.
	* testsuite/27_io/basic_istringstream/assign/1.cc: New.
	* testsuite/27_io/basic_istringstream/cons/move.cc: New.
	* testsuite/27_io/basic_ofstream/cons/move.cc: New.
	* testsuite/27_io/basic_ofstream/assign/1.cc: New.
	* testsuite/27_io/basic_ostringstream/assign/1.cc: New.
	* testsuite/27_io/basic_ostringstream/cons/move.cc: New.
	* testsuite/27_io/basic_stringstream/assign/1.cc: New.
	* testsuite/27_io/basic_stringstream/cons/move.cc: New.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@215463 138bc75d-0d04-0410-961f-82ee72b054a4

13 files changed, 1066 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/cons/char/copy_neg.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/cons/char/copy_neg.cc
new file mode 100644
index 00000000000..2080a9b60e2
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/cons/char/copy_neg.cc
@@ -0,0 +1,28 @@
+// { dg-options "-std=gnu++11" }
+// { dg-do compile }
+
+// Copyright (C) 2014 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 <fstream>
+
+void test()
+{
+  std::filebuf f;
+  std::filebuf ff(f); // { dg-error "deleted function" }
+  ff = f; // { dg-error "deleted function" }
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_fstream/assign/1.cc b/libstdc++-v3/testsuite/27_io/basic_fstream/assign/1.cc
new file mode 100644
index 00000000000..84947d0a7fd
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_fstream/assign/1.cc
@@ -0,0 +1,88 @@
+// Copyright (C) 2014 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++11" }
+// { dg-require-fileio "" }
+
+// 27.9.1.16 Assign and swap [fstream.assign]
+
+#include <fstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+using namespace std;
+
+string const name = "fstream-assign.txt";
+
+void
+test01()
+{
+  string orig = "Let the whole outside world consist of a long paper tape.";
+  {
+    fstream f(name, ios::in|ios::out|ios::trunc);
+    VERIFY( f.is_open() );
+    f << orig;
+    fstream f1;
+    f1 = std::move(f);
+    VERIFY( f1.is_open() );
+    VERIFY( !f.is_open() );
+    f1.seekg(0);
+    string result;
+    getline(f1, result);
+    VERIFY( result == orig );
+  }
+  {
+    fstream f(name, ios::in);
+    VERIFY( f.is_open() );
+    fstream f1;
+    f1.swap(f);
+    VERIFY( f1.is_open() );
+    VERIFY( !f.is_open() );
+    string result;
+    getline(f1, result);
+    VERIFY( result == orig );
+  }
+  {
+    fstream f(name, ios::in);
+    VERIFY( f.is_open() );
+    fstream f1;
+    swap(f1, f);
+    VERIFY( f1.is_open() );
+    VERIFY( !f.is_open() );
+    string result;
+    getline(f1, result);
+    VERIFY( result == orig );
+  }
+}
+
+void
+test02()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  wfstream f, f2;
+  f2 = std::move(f);
+  f2.swap(f);
+  swap(f2, f);
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_fstream/cons/move.cc b/libstdc++-v3/testsuite/27_io/basic_fstream/cons/move.cc
new file mode 100644
index 00000000000..1805e52f67e
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_fstream/cons/move.cc
@@ -0,0 +1,70 @@
+// Copyright (C) 2014 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++11" }
+// { dg-require-fileio "" }
+
+// 27.9.1.15 basic_fstream constructors [fstream.cons]
+
+#include <fstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+using namespace std;
+
+std::string const name = "fstream-move.txt";
+
+void
+test01()
+{
+  string orig = "Let the whole outside world consist of a long paper tape.";
+  fstream f(name, ios::in|ios::out|ios::trunc);
+  VERIFY( f.is_open() );
+  f << orig;
+  fstream f1 = std::move(f);
+  VERIFY( f1.is_open() );
+  VERIFY( !f.is_open() );
+  f1.seekg(0);
+  string result;
+  getline(f1, result);
+  VERIFY( result == orig );
+}
+
+void
+test02()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  wstring orig = L"Let the whole outside world consist of a long paper tape.";
+  wfstream f(name, ios::in|ios::out|ios::trunc);
+  VERIFY( f.is_open() );
+  f << orig;
+  wfstream f1 = std::move(f);
+  VERIFY( f1.is_open() );
+  VERIFY( !f.is_open() );
+  f1.seekg(0);
+  wstring result;
+  getline(f1, result);
+  VERIFY( result == orig );
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ifstream/assign/1.cc b/libstdc++-v3/testsuite/27_io/basic_ifstream/assign/1.cc
new file mode 100644
index 00000000000..e652d47b431
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ifstream/assign/1.cc
@@ -0,0 +1,85 @@
+// Copyright (C) 2014 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++11" }
+// { dg-require-fileio "" }
+
+// 27.9.1.8 Assign and swap [ifstream.assign]
+
+#include <fstream>
+#include <sstream>
+#include <testsuite_hooks.h>
+
+void
+read(std::istream& in, std::ostream& out)
+{
+  std::string s;
+  for (int i=0; i < 10; ++i)
+  {
+    getline(in, s);
+    out << s << '\n';
+  }
+}
+
+void
+test01()
+{
+  std::string const name = "thirty_years_among_the_dead_preproc.txt";
+  std::ostringstream ss0;
+  {
+    std::ifstream f0(name);
+    read(f0, ss0);
+  }
+  {
+    std::ifstream f0(name);
+    std::ifstream f1;
+    f1 = std::move(f0);
+    VERIFY( !f0.is_open() );
+    VERIFY( f1.is_open() );
+    std::ostringstream ss1;
+    read(f1, ss1);
+    VERIFY( ss0.str() == ss1.str() );
+  }
+  {
+    std::ifstream f0(name);
+    std::ifstream f1;
+    f1.swap(f0);
+    VERIFY( !f0.is_open() );
+    VERIFY( f1.is_open() );
+    std::ostringstream ss1;
+    read(f1, ss1);
+    VERIFY( ss0.str() == ss1.str() );
+  }
+}
+
+void
+test02()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::wifstream f, f2;
+  f2 = std::move(f);
+  f2.swap(f);
+  swap(f2, f);
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ifstream/cons/move.cc b/libstdc++-v3/testsuite/27_io/basic_ifstream/cons/move.cc
new file mode 100644
index 00000000000..afa2a62696a
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ifstream/cons/move.cc
@@ -0,0 +1,71 @@
+// Copyright (C) 2014 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++11" }
+// { dg-require-fileio "" }
+
+// 27.9.1.7 basic_ifstream constructors [ifstream.cons]
+
+#include <fstream>
+#include <sstream>
+#include <testsuite_hooks.h>
+
+void
+read(std::istream& in, std::ostream& out)
+{
+  std::string s;
+  for (int i=0; i < 10; ++i)
+  {
+    getline(in, s);
+    out << s << '\n';
+  }
+}
+
+void
+test01()
+{
+  std::string const name = "thirty_years_among_the_dead_preproc.txt";
+  std::ostringstream ss0;
+  {
+    std::ifstream f0(name);
+    read(f0, ss0);
+  }
+  std::ifstream f0(name);
+  std::ifstream f1 = std::move(f0);
+  VERIFY( !f0.is_open() );
+  VERIFY( f1.is_open() );
+  std::ostringstream ss1;
+  read(f1, ss1);
+  VERIFY( ss0.str() == ss1.str() );
+}
+
+void
+test02()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::wifstream f0("thirty_years_among_the_dead_preproc.txt");
+  std::wifstream f1 = std::move(f0);
+  VERIFY( f1.is_open() );
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_istringstream/assign/1.cc b/libstdc++-v3/testsuite/27_io/basic_istringstream/assign/1.cc
new file mode 100644
index 00000000000..a9ae2ae9eba
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_istringstream/assign/1.cc
@@ -0,0 +1,97 @@
+// { dg-options "-std=gnu++11" }
+
+// Copyright (C) 2014 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/>.
+
+// 27.8.3.2 Assign and swap [istringstream.assign]
+
+#include <sstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  std::istringstream s1("absence of a signal");
+  std::string s;
+  s1 >> s;
+
+  std::istringstream s2;
+  s2 = std::move(s1);
+  s2 >> s;
+  VERIFY(s == "of");
+
+  std::istringstream s3;
+  s3.swap(s2);
+  s3 >> s;
+  VERIFY(s == "a");
+
+  swap(s1, s3);
+  s1 >> s;
+  VERIFY(s == "signal");
+
+  s2.str("should never be used as a signal");
+  s1 = std::move(s2);
+  getline(s1, s);
+  VERIFY(s == "should never be used as a signal");
+  s3 = std::move(s1);
+  VERIFY(s3.eof());
+}
+
+void test02()
+{
+  std::istringstream s0{ " 1234.5 " };
+  std::istringstream s;
+  s = std::move(s0);
+  char c{};
+  s >> c;
+  VERIFY( c == '1' );
+  int i{};
+  s >> i;
+  VERIFY( i == 234 );
+  double d{};
+  s >> d;
+  VERIFY( d == .5 );
+}
+
+void test03()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::wistringstream s0{ L" 1234.5 " };
+  std::wistringstream s;
+  s = std::move(s0);
+  s.swap(s0);
+  swap(s, s0);
+  wchar_t c{};
+  s >> c;
+  VERIFY( c == L'1' );
+  int i{};
+  s >> i;
+  VERIFY( i == 234 );
+  double d{};
+  s >> d;
+  VERIFY( d == .5 );
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+  test03();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_istringstream/cons/move.cc b/libstdc++-v3/testsuite/27_io/basic_istringstream/cons/move.cc
new file mode 100644
index 00000000000..77c1fbb2afe
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_istringstream/cons/move.cc
@@ -0,0 +1,94 @@
+// { dg-options "-std=gnu++11" }
+
+// Copyright (C) 2014 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/>.
+
+// 27.8.3.1 basic_istringstream constructors [istringstream.cons]
+
+#include <sstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  std::istringstream s1("absence of a signal");
+  std::string s;
+  s1 >> s;
+
+  std::istringstream s2 = std::move(s1);
+  s2 >> s;
+  VERIFY(s == "of");
+
+  std::istringstream s3;
+  s3 = std::move(s2);
+  s3 >> s;
+  VERIFY(s == "a");
+
+  s1 = std::move(s3);
+  s1 >> s;
+  VERIFY(s == "signal");
+
+  s2.str("should never be used as a signal");
+  s1 = std::move(s2);
+  getline(s1, s);
+  VERIFY(s == "should never be used as a signal");
+  s3 = std::move(s1);
+  VERIFY(s3.eof());
+}
+
+void
+test02()
+{
+  std::istringstream s0{ " 1234.5 " };
+  std::istringstream s{ std::move(s0) };
+  char c{};
+  s >> c;
+  VERIFY( c == '1' );
+  int i{};
+  s >> i;
+  VERIFY( i == 234 );
+  double d{};
+  s >> d;
+  VERIFY( d == .5 );
+}
+
+void
+test03()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::wistringstream s0{ L" 1234.5 " };
+  std::wistringstream s{ std::move(s0) };
+  wchar_t c{};
+  s >> c;
+  VERIFY( c == L'1' );
+  int i{};
+  s >> i;
+  VERIFY( i == 234 );
+  double d{};
+  s >> d;
+  VERIFY( d == .5 );
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+  test03();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ofstream/assign/1.cc b/libstdc++-v3/testsuite/27_io/basic_ofstream/assign/1.cc
new file mode 100644
index 00000000000..7092ebe64a5
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ofstream/assign/1.cc
@@ -0,0 +1,74 @@
+// Copyright (C) 2014 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++11" }
+// { dg-require-fileio "" }
+
+// 27.9.1.12 Assign and swap [ostringstream.assign]
+
+#include <fstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+using namespace std;
+
+string const name = "ofstream-assign.txt";
+
+void
+test01()
+{
+  string s1 = "Let the whole outside world";
+  string s2 = " consist of a long paper tape.";
+  ofstream f(name, ios::trunc);
+  VERIFY( f.is_open() );
+  f << s1;
+  {
+    ofstream f1;
+    f1 = std::move(f);
+    VERIFY( f1.is_open() );
+    VERIFY( !f.is_open() );
+    f1 << s2;
+    f1.swap(f);
+    VERIFY( !f1.is_open() );
+    VERIFY( f.is_open() );
+    f << s1;
+    swap(f1, f);
+    f1 << s2;
+  }
+  ifstream in(name);
+  string result;
+  getline(in, result);
+  VERIFY( result == (s1 + s2 + s1 + s2) );
+}
+
+void
+test02()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::wofstream s0, s;
+  s = std::move(s0);
+  s.swap(s0);
+  swap(s, s0);
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ofstream/cons/move.cc b/libstdc++-v3/testsuite/27_io/basic_ofstream/cons/move.cc
new file mode 100644
index 00000000000..a6dca710132
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ofstream/cons/move.cc
@@ -0,0 +1,78 @@
+// Copyright (C) 2014 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++11" }
+// { dg-require-fileio "" }
+
+// 27.9.1.11 basic_ofstream constructors [ofstream.cons]
+
+#include <fstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+using namespace std;
+
+std::string const name = "ofstream-move.txt";
+
+void
+test01()
+{
+  string s1 = "Let the whole outside world";
+  string s2 = " consist of a long paper tape.";
+  ofstream f(name, ios::trunc);
+  VERIFY( f.is_open() );
+  f << s1;
+  {
+    ofstream f1 = std::move(f);
+    VERIFY( f1.is_open() );
+    VERIFY( !f.is_open() );
+    f1 << s2;
+  }
+  ifstream in(name);
+  string result;
+  getline(in, result);
+  VERIFY( result == (s1 + s2) );
+}
+
+void
+test02()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  wstring s1 = L"Let the whole outside world";
+  wstring s2 = L" consist of a long paper tape.";
+  wofstream f(name, ios::trunc);
+  VERIFY( f.is_open() );
+  f << s1;
+  {
+    wofstream f1 = std::move(f);
+    VERIFY( f1.is_open() );
+    VERIFY( !f.is_open() );
+    f1 << s2;
+  }
+  wifstream in(name);
+  wstring result;
+  getline(in, result);
+  VERIFY( result == (s1 + s2) );
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ostringstream/assign/1.cc b/libstdc++-v3/testsuite/27_io/basic_ostringstream/assign/1.cc
new file mode 100644
index 00000000000..01b92e9e3d1
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ostringstream/assign/1.cc
@@ -0,0 +1,117 @@
+// { dg-options "-std=gnu++11" }
+
+// Copyright (C) 2014 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/>.
+
+// 27.8.4.2 Assign and swap [ostringstream.assign]
+
+#include <sstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+const std::string strings[] = {
+  "one could carry out the description of a machine, ",
+  "no matter how complicated, ",
+  "in characters which would be merely the letters of the alphabet, and so ",
+  "provide the mind with a method of knowing the machine and all its parts"
+};
+
+void
+append(std::ostringstream& ss, std::string& s, const std::string& t)
+{
+  ss << t;
+  s += t;
+}
+
+// assign
+void
+test01()
+{
+  std::string exp;
+  std::ostringstream s1;
+  append(s1, exp, strings[0]);
+
+  std::ostringstream s2;
+  s2 = std::move(s1);
+  VERIFY( s2.str() == exp );
+  append(s2, exp, strings[1]);
+  VERIFY( s2.str() == exp );
+
+  std::ostringstream s3;
+  s3 = std::move(s2);
+  VERIFY( s3.str() == exp );
+  append(s3, exp, strings[2]);
+  VERIFY( s3.str() == exp );
+
+  s1.setstate(std::ios::failbit);
+  s1 = std::move(s3);
+  VERIFY( s1.good() );
+  VERIFY( s1.str() == exp );
+  append(s1, exp, strings[3]);
+  VERIFY( s1.str() == exp );
+}
+
+// swap
+void
+test02()
+{
+  std::string exp;
+  std::ostringstream s1;
+  append(s1, exp, strings[0]);
+
+  std::ostringstream s2;
+  s2.swap(s1);
+  VERIFY( s1.str().empty() );
+  VERIFY( s2.str() == exp );
+  append(s2, exp, strings[1]);
+  VERIFY( s2.str() == exp );
+
+  std::ostringstream s3;
+  swap(s3, s2);
+  VERIFY( s2.str().empty() );
+  VERIFY( s3.str() == exp );
+  append(s3, exp, strings[2]);
+  VERIFY( s3.str() == exp );
+
+  s1.setstate(std::ios::failbit);
+  swap(s1, s3);
+  VERIFY( s1.good() );
+  VERIFY( s3.fail() );
+  VERIFY( s2.str().empty() );
+  VERIFY( s1.str() == exp );
+  append(s1, exp, strings[3]);
+  VERIFY( s1.str() == exp );
+}
+
+void
+test03()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::wistringstream s0, s;
+  s = std::move(s0);
+  s.swap(s0);
+  swap(s, s0);
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+  test03();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ostringstream/cons/move.cc b/libstdc++-v3/testsuite/27_io/basic_ostringstream/cons/move.cc
new file mode 100644
index 00000000000..26ccf1a8bcc
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ostringstream/cons/move.cc
@@ -0,0 +1,82 @@
+// { dg-options "-std=gnu++11" }
+
+// Copyright (C) 2014 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/>.
+
+// 27.8.4.1 basic_ostringstream constructors [ostringstream.cons]
+
+#include <sstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+const std::string strings[] = {
+  "one could carry out the description of a machine, ",
+  "no matter how complicated, ",
+  "in characters which would be merely the letters of the alphabet, and so ",
+  "provide the mind with a method of knowing the machine and all its parts"
+};
+
+void
+append(std::ostringstream& ss, std::string& s, const std::string& t)
+{
+  ss << t;
+  s += t;
+}
+
+void
+test01()
+{
+  std::string exp;
+  std::ostringstream s1;
+  append(s1, exp, strings[0]);
+
+  std::ostringstream s2 = std::move(s1);
+  VERIFY( s2.good() );
+  VERIFY( s2.rdbuf() != nullptr );
+  VERIFY( s2.str() == exp );
+  append(s2, exp, strings[1]);
+  VERIFY( s2.str() == exp );
+
+  std::ostringstream s3 = std::move(s2);
+  VERIFY( s3.good() );
+  VERIFY( s3.rdbuf() != nullptr );
+  VERIFY( s3.str() == exp );
+  append(s3, exp, strings[2]);
+  VERIFY( s3.str() == exp );
+
+  s1.str("");
+  s1.clear();
+  exp.clear();
+  append(s1, exp, strings[3]);
+  VERIFY( s1.str() == exp );
+}
+
+void
+test02()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::wostringstream s1;
+  std::wostringstream s2 = std::move(s1);
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringstream/assign/1.cc b/libstdc++-v3/testsuite/27_io/basic_stringstream/assign/1.cc
new file mode 100644
index 00000000000..0465461c7cb
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringstream/assign/1.cc
@@ -0,0 +1,100 @@
+// { dg-options "-std=gnu++11" }
+
+// Copyright (C) 2014 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/>.
+
+// 27.8.5.2 Assign and swap [stringstream.assign]
+
+#include <sstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  std::stringstream s1;
+  s1 << "absence of a signal";
+  std::string s;
+  s1 >> s;
+
+  std::stringstream s2;
+  s2 = std::move(s1);
+  s2 >> s;
+  VERIFY(s == "of");
+
+  std::stringstream s3;
+  s3.swap(s2);
+  s3 >> s;
+  VERIFY(s == "a");
+
+  swap(s1, s3);
+  s1 >> s;
+  VERIFY(s == "signal");
+
+  s2 << "should never be used as a signal";
+  s1 = std::move(s2);
+  getline(s1, s);
+  VERIFY(s == "should never be used as a signal");
+  s3 = std::move(s1);
+  VERIFY(s3.eof());
+}
+
+void test02()
+{
+  std::stringstream s0;
+  s0 << " 1234.5 ";
+  std::stringstream s;
+  s = std::move(s0);
+  char c{};
+  s >> c;
+  VERIFY( c == '1' );
+  int i{};
+  s >> i;
+  VERIFY( i == 234 );
+  double d{};
+  s >> d;
+  VERIFY( d == .5 );
+}
+
+void test03()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::wstringstream s0;
+  s0 << L" 1234.5 ";
+  std::wstringstream s;
+  s = std::move(s0);
+  s.swap(s0);
+  swap(s, s0);
+  wchar_t c{};
+  s >> c;
+  VERIFY( c == L'1' );
+  int i{};
+  s >> i;
+  VERIFY( i == 234 );
+  double d{};
+  s >> d;
+  VERIFY( d == .5 );
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+  test03();
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/move.cc b/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/move.cc
new file mode 100644
index 00000000000..3991e7c72a0
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/move.cc
@@ -0,0 +1,82 @@
+// { dg-options "-std=gnu++11" }
+
+// Copyright (C) 2014 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/>.
+
+// 27.8.5.1 basic_stringstream constructors [stringstream.cons]
+
+#include <sstream>
+#include <string>
+#include <testsuite_hooks.h>
+
+const std::string strings[] = {
+  "one could carry out the description of a machine, ",
+  "no matter how complicated, ",
+  "in characters which would be merely the letters of the alphabet, and so ",
+  "provide the mind with a method of knowing the machine and all its parts"
+};
+
+void
+append(std::stringstream& ss, std::string& s, const std::string& t)
+{
+  ss << t;
+  s += t;
+}
+
+void
+test01()
+{
+  std::string exp;
+  std::stringstream s1;
+  append(s1, exp, strings[0]);
+
+  std::stringstream s2 = std::move(s1);
+  VERIFY( s2.good() );
+  VERIFY( s2.rdbuf() != nullptr );
+  VERIFY( s2.str() == exp );
+  append(s2, exp, strings[1]);
+  VERIFY( s2.str() == exp );
+
+  std::stringstream s3 = std::move(s2);
+  VERIFY( s3.good() );
+  VERIFY( s3.rdbuf() != nullptr );
+  VERIFY( s3.str() == exp );
+  append(s3, exp, strings[2]);
+  VERIFY( s3.str() == exp );
+
+  s1.str("");
+  s1.clear();
+  exp.clear();
+  append(s1, exp, strings[3]);
+  VERIFY( s1.str() == exp );
+}
+
+void
+test02()
+{
+#ifdef _GLIBCXX_USE_WCHAR_T
+  std::wstringstream s1;
+  std::wstringstream s2 = std::move(s1);
+#endif
+}
+
+int
+main()
+{
+  test01();
+  test02();
+}