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diff --git a/libstdc++-v3/testsuite/27_io/basic_streambuf/overflow/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_streambuf/overflow/wchar_t/1.cc
new file mode 100644
index 00000000..384ea29a
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_streambuf/overflow/wchar_t/1.cc
@@ -0,0 +1,110 @@
+// 1999-10-11 bkoz
+
+// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 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
+// .
+
+
+// 27.5.2 template class basic_streambuf
+
+#include
+#include
+#include
+
+class testbuf : public std::wstreambuf
+{
+public:
+
+ // Typedefs:
+ typedef std::wstreambuf::traits_type traits_type;
+ typedef std::wstreambuf::char_type char_type;
+
+ testbuf(): std::wstreambuf()
+ { }
+
+ bool
+ check_pointers()
+ {
+ bool test __attribute__((unused)) = true;
+ VERIFY( this->eback() == NULL );
+ VERIFY( this->gptr() == NULL );
+ VERIFY( this->egptr() == NULL );
+ VERIFY( this->pbase() == NULL );
+ VERIFY( this->pptr() == NULL );
+ VERIFY( this->epptr() == NULL );
+ return test;
+ }
+
+ int_type
+ pub_uflow()
+ { return (this->uflow()); }
+
+ int_type
+ pub_overflow(int_type __c = traits_type::eof())
+ { return (this->overflow(__c)); }
+
+ int_type
+ pub_pbackfail(int_type __c)
+ { return (this->pbackfail(__c)); }
+
+ void
+ pub_setg(wchar_t* beg, wchar_t* cur, wchar_t* end)
+ { this->setg(beg, cur, end); }
+
+ void
+ pub_setp(wchar_t* beg, wchar_t* end)
+ { this->setp(beg, end); }
+
+protected:
+ int_type
+ underflow()
+ {
+ int_type __retval = traits_type::eof();
+ if (this->gptr() < this->egptr())
+ __retval = traits_type::not_eof(0);
+ return __retval;
+ }
+};
+
+void test01()
+{
+ typedef testbuf::traits_type traits_type;
+ typedef testbuf::int_type int_type;
+
+ bool test __attribute__((unused)) = true;
+ wchar_t lit01[52];
+ std::wcscpy(lit01, L"chicago underground trio/possible cube on delmark");
+ testbuf buf01;
+
+ // pbackfail
+ int i01 = 3;
+ buf01.pub_setg(lit01, lit01, (lit01 + i01));
+ VERIFY( i01 == buf01.in_avail() );
+ int_type intt01 = traits_type::to_int_type(L'b');
+ VERIFY( traits_type::eof() == buf01.pub_pbackfail(intt01) );
+
+ // overflow
+ VERIFY( traits_type::eof() == buf01.pub_overflow(intt01) );
+ VERIFY( traits_type::eof() == buf01.pub_overflow() );
+ VERIFY( buf01.sgetc() == traits_type::to_int_type(lit01[0]) );
+}
+
+int main()
+{
+ test01();
+ return 0;
+}