Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / 22_locale / codecvt / length / wchar_t / 6.cc

diff --git a/libstdc++-v3/testsuite/22_locale/codecvt/length/wchar_t/6.cc b/libstdc++-v3/testsuite/22_locale/codecvt/length/wchar_t/6.cc
new file mode 100644 (file)
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--- /dev/null
+++ b/libstdc++-v3/testsuite/22_locale/codecvt/length/wchar_t/6.cc
@@ -0,0 +1,84 @@
+// 2003-02-06  Petur Runolfsson  <peturr02@ru.is>
+
+// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009 Free Software Foundation
+//
+// 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/>.
+
+// 22.2.1.5 - Template class codecvt [lib.locale.codecvt]
+
+#include <locale>
+#include <cstring>
+#include <testsuite_hooks.h>
+
+// Need to explicitly set the state(mbstate_t) to zero.
+// How to do this is not specified by the ISO C99 standard, so we
+// might need to add some operators to make the intuiative case
+// work:
+//   w_codecvt::state_type state00;
+//   state00 = 0;  
+// or, can use this explicit "C" initialization:
+//   w_codecvt::state_type state01 = {0, 0};
+// .. except Ulrich says: Use memset. Always use memset. Feel the force...
+void
+zero_state(std::mbstate_t& state)
+{ std::memset(&state, 0, sizeof(std::mbstate_t)); }
+
+bool length_called = false;
+
+class length_codecvt : public std::codecvt<wchar_t, char, std::mbstate_t>
+{
+  typedef std::codecvt<wchar_t, char, std::mbstate_t> w_codecvt;
+
+public:
+  // DR75: type of first argument of do_length is state_type&
+  virtual int do_length(state_type& state, const extern_type* from,
+                        const extern_type* end, std::size_t max) const
+  {
+    length_called = true;
+    return w_codecvt::do_length(state, from, end, max);
+  }
+};
+
+// Required instantiation
+// codecvt<wchar_t, char, mbstate_t>
+//
+// libstdc++/9224
+void test06()
+{
+  using namespace std;
+  typedef codecvt<wchar_t, char, mbstate_t>    w_codecvt;
+  typedef char                                 ext_type;
+
+  bool test __attribute__((unused)) = true;
+  const ext_type*      e_lit = "black pearl jasmine tea";
+  int                  size = strlen(e_lit);
+
+  locale               loc;
+  loc = locale(loc, new length_codecvt);
+  const w_codecvt*     cvt = &use_facet<w_codecvt>(loc); 
+
+  w_codecvt::state_type state04;
+  zero_state(state04);
+  length_called = false;
+  cvt->length(state04, e_lit, e_lit + size, 5);
+  VERIFY( length_called );
+}
+
+int main ()
+{
+  test06();
+  return 0;
+}