codecvt.cc (write_utf16_code_point): Fix code to output surrogate pairs.

	* src/c++11/codecvt.cc (write_utf16_code_point): Fix code to output
	surrogate pairs.
	(utf16_in): Pass mode argument to write_utf16_code_point.
	(codecvt<char16_t, char, mbstate_t>::do_in): Set mode according to
	native byte order.
	* testsuite/22_locale/codecvt/char16_t.cc: New.
	* testsuite/22_locale/codecvt/in/wchar_t/1.cc: Fix typo.

From-SVN: r220793

2 files changed, 98 insertions, 1 deletions

diff --git a/libstdc++-v3/testsuite/22_locale/codecvt/char16_t.cc b/libstdc++-v3/testsuite/22_locale/codecvt/char16_t.cc
new file mode 100644
index 00000000000..14477f5b711
--- /dev/null
+++ b/libstdc++-v3/testsuite/22_locale/codecvt/char16_t.cc
@@ -0,0 +1,97 @@
+// Copyright (C) 2015 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" }
+
+// [locale.codecvt], C++11 22.4.1.4.  specialization.
+
+#include <locale>
+#include <cstring>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+  using namespace std;
+  typedef codecvt<char16_t, char, mbstate_t> codecvt_c16;
+  locale loc_c = locale::classic();
+  VERIFY(has_facet<codecvt_c16>(loc_c));
+  const codecvt_c16* const cvt = &use_facet<codecvt_c16>(loc_c);
+
+  VERIFY(!cvt->always_noconv());
+  VERIFY(cvt->max_length() == 3);
+  VERIFY(cvt->encoding() == 0);
+
+  const char u8dat[] = u8"H\U000000E4ll\U000000F6 \U0001F63F \U000056FD "
+    u8"\U0000222B f(\U000003BA) exp(-2\U000003C0\U000003C9) d\U000003BA "
+    u8"\U0001F6BF \U0001F6BF \U0001F648 \U00000413\U00000435\U0000043E"
+    u8"\U00000433\U00000440\U00000430\U00000444\U00000438\U0000044F \U0000FB05";
+  const char* const u8dat_end = std::end(u8dat);
+
+  const char16_t u16dat[] = u"H\U000000E4ll\U000000F6 \U0001F63F \U000056FD "
+    u"\U0000222B f(\U000003BA) exp(-2\U000003C0\U000003C9) d\U000003BA "
+    u"\U0001F6BF \U0001F6BF \U0001F648 \U00000413\U00000435\U0000043E"
+    u"\U00000433\U00000440\U00000430\U00000444\U00000438\U0000044F \U0000FB05";
+  const char16_t* const u16dat_end = std::end(u16dat);
+
+  {
+    const size_t len = u16dat_end - u16dat + 1;
+    char16_t* const buffer = new char16_t[len];
+    char16_t* const buffer_end = buffer + len;
+
+    const char* from_next;
+    char16_t* to_next;
+
+    codecvt_c16::state_type state01;
+    state01 = {};
+    codecvt_base::result res = cvt->in(state01, u8dat, u8dat_end, from_next,
+                                       buffer, buffer_end, to_next);
+
+    VERIFY(res == codecvt_base::ok);
+    VERIFY(from_next == u8dat_end);
+    VERIFY(std::memcmp((void*)buffer, (void*)u16dat, sizeof(u16dat)) == 0);
+
+    delete[] buffer;
+  }
+
+  {
+    const size_t len = u8dat_end - u8dat + 1;
+    char* const buffer = new char[len];
+    char* const buffer_end = buffer + len;
+
+    const char16_t* from_next;
+    char* to_next;
+
+    codecvt_c16::state_type state01;
+    state01 = {};
+    codecvt_base::result res = cvt->out(state01, u16dat, u16dat_end,
+from_next,
+                                        buffer, buffer_end, to_next);
+
+    VERIFY(res == codecvt_base::ok);
+    VERIFY(from_next == u16dat_end);
+    VERIFY(std::memcmp((void*)buffer, (void*)u8dat, sizeof(u8dat)) == 0);
+
+    delete[] buffer;
+  }
+}
+
+int
+main()
+{
+  test01();
+}
diff --git a/libstdc++-v3/testsuite/22_locale/codecvt/in/wchar_t/1.cc b/libstdc++-v3/testsuite/22_locale/codecvt/in/wchar_t/1.cc
index 1e682a671a7..ff0b657e88c 100644
--- a/libstdc++-v3/testsuite/22_locale/codecvt/in/wchar_t/1.cc
+++ b/libstdc++-v3/testsuite/22_locale/codecvt/in/wchar_t/1.cc
@@ -25,7 +25,7 @@
 
 // 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
+// might need to add some operators to make the intuitive case
 // work:
 //   w_codecvt::state_type state00;
 //   state00 = 0;