Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / 27_io / basic_filebuf / seekoff / wchar_t / 11543.cc

diff --git a/libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/11543.cc b/libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/11543.cc
new file mode 100644 (file)
index 0000000..fd0c19e
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_filebuf/seekoff/wchar_t/11543.cc
@@ -0,0 +1,141 @@
+// Copyright (C) 2003, 2009
+// 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/>.
+
+// 27.8.1.4 Overridden virtual functions
+
+#include <fstream>
+#include <locale>
+#include <testsuite_hooks.h>
+
+struct MyState
+{
+};
+
+struct MyCharTraits : std::char_traits<wchar_t>
+{
+  typedef std::fpos<MyState> pos_type;
+  typedef MyState state_type;
+};
+
+namespace std
+{
+  template <>
+    class codecvt<wchar_t, char, MyState> :
+      public locale::facet, public codecvt_base
+    {
+    public:
+      typedef wchar_t intern_type;
+      typedef char extern_type;
+      typedef MyState state_type;
+    
+      explicit codecvt(size_t refs = 0)
+      : locale::facet(refs) { }
+    
+      result out(state_type& state, const intern_type* from,
+                const intern_type* from_end,  const intern_type*& from_next,
+                extern_type* to, extern_type* to_limit,
+                extern_type*& to_next) const
+      { return do_out(state, from, from_end, from_next,
+                     to, to_limit, to_next); }
+
+      result unshift(state_type& state, extern_type* to, extern_type* to_limit,
+                    extern_type*& to_next) const
+      { return do_unshift(state, to, to_limit, to_next); }
+
+      result in(state_type& state, const extern_type* from,
+               const extern_type* from_end, const extern_type*& from_next,
+               intern_type* to, intern_type* to_limit,
+               intern_type*& to_next) const
+      { return do_in(state, from, from_end, from_next,
+                    to, to_limit, to_next); }
+
+      int encoding() const throw()
+      { return do_encoding(); }
+      
+      bool always_noconv() const throw()
+      { return do_always_noconv(); }
+
+      int length(state_type& state, const extern_type* from,
+                const extern_type* end, size_t max) const
+      { return do_length(state, from, end, max); }
+
+      int max_length() const throw()
+      { return do_max_length(); }
+    
+      static locale::id id;
+    
+    protected:
+      virtual ~codecvt();
+
+      virtual result do_out(state_type&, const intern_type*,
+                           const intern_type*, const intern_type*&,
+                           extern_type*, extern_type*, extern_type*&) const
+      { return error; }
+
+      virtual result do_in(state_type&, const extern_type*, const extern_type*,
+                          const extern_type*&, intern_type*, intern_type*,
+                          intern_type*&) const
+      { return error; }
+
+      virtual result do_unshift(state_type&, extern_type*, extern_type*,
+                               extern_type*&) const
+      { return noconv; }
+
+      virtual int do_encoding() const throw()
+      { return 1; }
+
+      virtual bool do_always_noconv() const throw()
+      { return false; }
+
+      virtual int do_length(state_type&, const extern_type* from,
+                           const extern_type* end, size_t max) const
+      {
+       size_t len = end - from;
+       return std::min(max, len);
+      }
+
+      virtual int do_max_length() const throw()
+      { return 1; }
+    };
+  
+  locale::id codecvt<wchar_t, char, MyState>::id;
+
+  codecvt<wchar_t, char, MyState>::~codecvt()
+  { }
+}
+
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  std::locale loc(std::locale::classic(),
+                 new std::codecvt<wchar_t, char, MyState>);
+  std::basic_filebuf<wchar_t, MyCharTraits> fb;
+  fb.pubimbue(loc);
+  fb.open("tmp_11543", std::ios_base::out);
+  VERIFY( fb.is_open() );
+  MyCharTraits::pos_type pos = fb.pubseekoff(0, std::ios_base::beg);
+  VERIFY( pos != MyCharTraits::pos_type(MyCharTraits::off_type(-1)) );
+  fb.close();
+}
+
+int main()
+{
+  test01();
+  return 0;
+}