commit 503fb9b4fe01b0c34d47590ed2384db179e04a57
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri May 1 18:41:38 2015 +0100

    	* include/experimental/fs_dir.h: Fix use of non-reserved names.
    	* include/experimental/fs_ops.h: Likewise.
    	* include/experimental/fs_path.h: Likewise.
    	* testsuite/lib/libstdc++.exp (check_v3_target_filesystem_ts): Use
    	C++11 when checking for support.

diff --git a/libstdc++-v3/include/experimental/fs_dir.h b/libstdc++-v3/include/experimental/fs_dir.h
index 0538fd2..d46d41b 100644
--- a/libstdc++-v3/include/experimental/fs_dir.h
+++ b/libstdc++-v3/include/experimental/fs_dir.h
@@ -180,14 +180,14 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
       directory_options __options, error_code& __ec) noexcept
     : directory_iterator(__p, __options, &__ec) { }
 
-    directory_iterator(const directory_iterator& rhs) = default;
+    directory_iterator(const directory_iterator& __rhs) = default;
 
-    directory_iterator(directory_iterator&& rhs) noexcept = default;
+    directory_iterator(directory_iterator&& __rhs) noexcept = default;
 
     ~directory_iterator() = default;
 
-    directory_iterator& operator=(const directory_iterator& rhs) = default;
-    directory_iterator& operator=(directory_iterator&& rhs) noexcept = default;
+    directory_iterator& operator=(const directory_iterator& __rhs) = default;
+    directory_iterator& operator=(directory_iterator&& __rhs) noexcept = default;
 
     const directory_entry& operator*() const;
     const directory_entry* operator->() const { return &**this; }
@@ -269,9 +269,9 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
 
     // modifiers
     recursive_directory_iterator&
-      operator=(const recursive_directory_iterator& rhs) noexcept;
+      operator=(const recursive_directory_iterator& __rhs) noexcept;
     recursive_directory_iterator&
-      operator=(recursive_directory_iterator&& rhs) noexcept;
+      operator=(recursive_directory_iterator&& __rhs) noexcept;
 
     recursive_directory_iterator& operator++();
     recursive_directory_iterator& increment(error_code& __ec) noexcept;
diff --git a/libstdc++-v3/include/experimental/fs_ops.h b/libstdc++-v3/include/experimental/fs_ops.h
index 0878fbb..6b7d470 100644
--- a/libstdc++-v3/include/experimental/fs_ops.h
+++ b/libstdc++-v3/include/experimental/fs_ops.h
@@ -53,8 +53,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   path absolute(const path& __p, const path& __base = current_path());
 
   path canonical(const path& __p, const path& __base = current_path());
-  path canonical(const path& p, error_code& ec);
-  path canonical(const path& p, const path& base, error_code& ec);
+  path canonical(const path& __p, error_code& __ec);
+  path canonical(const path& __p, const path& __base, error_code& __ec);
 
   inline void
   copy(const path& __from, const path& __to)
@@ -64,8 +64,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   copy(const path& __from, const path& __to, error_code& __ec) noexcept
   { copy(__from, __to, copy_options::none, __ec); }
 
-  void copy(const path& __from, const path& __to, copy_options options);
-  void copy(const path& __from, const path& __to, copy_options options,
+  void copy(const path& __from, const path& __to, copy_options __options);
+  void copy(const path& __from, const path& __to, copy_options __options,
 	    error_code& __ec) noexcept;
 
   inline bool
@@ -239,12 +239,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
   file_time_type  last_write_time(const path& __p);
   file_time_type  last_write_time(const path& __p, error_code& __ec) noexcept;
-  void last_write_time(const path& __p, file_time_type new_time);
-  void last_write_time(const path& __p, file_time_type new_time,
+  void last_write_time(const path& __p, file_time_type __new_time);
+  void last_write_time(const path& __p, file_time_type __new_time,
 		       error_code& __ec) noexcept;
 
-  void permissions(const path& __p, perms prms);
-  void permissions(const path& __p, perms prms, error_code& __ec) noexcept;
+  void permissions(const path& __p, perms __prms);
+  void permissions(const path& __p, perms __prms, error_code& __ec) noexcept;
 
   path read_symlink(const path& __p);
   path read_symlink(const path& __p, error_code& __ec);
diff --git a/libstdc++-v3/include/experimental/fs_path.h b/libstdc++-v3/include/experimental/fs_path.h
index ffc4926..11b0561 100644
--- a/libstdc++-v3/include/experimental/fs_path.h
+++ b/libstdc++-v3/include/experimental/fs_path.h
@@ -423,9 +423,9 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
 
     void _M_split_cmpts();
     void _M_trim();
-    void _M_add_root_name(size_t n);
-    void _M_add_root_dir(size_t pos);
-    void _M_add_filename(size_t pos, size_t n);
+    void _M_add_root_name(size_t __n);
+    void _M_add_root_dir(size_t __pos);
+    void _M_add_filename(size_t __pos, size_t __n);
 
     string_type _M_pathname;
 
@@ -681,10 +681,10 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
     iterator  operator--(int) { auto __tmp = *this; --_M_cur; return __tmp; }
 
     friend bool operator==(const iterator& __lhs, const iterator& __rhs)
-    { return __lhs.equals(__rhs); }
+    { return __lhs._M_equals(__rhs); }
 
     friend bool operator!=(const iterator& __lhs, const iterator& __rhs)
-    { return !__lhs.equals(__rhs); }
+    { return !__lhs._M_equals(__rhs); }
 
   private:
     friend class path;
@@ -697,7 +697,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
     : _M_path(__path), _M_cur(), _M_at_end(__at_end)
     { }
 
-    bool equals(iterator) const;
+    bool _M_equals(iterator) const;
 
     const path* 		_M_path;
     path::_List::const_iterator _M_cur;
@@ -749,7 +749,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
     inline path::_Path<_CharT*, _CharT*>&
     path::operator+=(_CharT __x)
     {
-      auto* __addr = std::addressof(__x);
+      auto* __addr = std::__addressof(__x);
       return concat(__addr, __addr + 1);
     }
 
@@ -990,7 +990,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
   }
 
   inline bool
-  path::iterator::equals(iterator __rhs) const
+  path::iterator::_M_equals(iterator __rhs) const
   {
     if (_M_path != __rhs._M_path)
       return false;
diff --git a/libstdc++-v3/testsuite/lib/libstdc++.exp b/libstdc++-v3/testsuite/lib/libstdc++.exp
index 7ae4f3f..7d8f282 100644
--- a/libstdc++-v3/testsuite/lib/libstdc++.exp
+++ b/libstdc++-v3/testsuite/lib/libstdc++.exp
@@ -1896,6 +1896,8 @@ proc check_v3_target_little_endian { } {
 }
 
 proc check_v3_target_filesystem_ts { } {
+    global cxxflags
+    global DEFAULT_CXXFLAGS
     global et_filesystem_ts
     global tool
 
@@ -1930,7 +1932,11 @@ proc check_v3_target_filesystem_ts { } {
 	puts $f "#endif"
 	close $f
 
+	set cxxflags_saved $cxxflags
+	set cxxflags "$cxxflags $DEFAULT_CXXFLAGS -Werror -std=gnu++11"
+
 	set lines [v3_target_compile $src /dev/null preprocess ""]
+	set cxxflags $cxxflags_saved
 	file delete $src
 
 	if [string match "" $lines] {