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diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/compare/wchar_t/1.cc b/libstdc++-v3/testsuite/21_strings/basic_string/compare/wchar_t/1.cc
new file mode 100644
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+++ b/libstdc++-v3/testsuite/21_strings/basic_string/compare/wchar_t/1.cc
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+// 980930 bkoz work with libstdc++v3
+
+// Copyright (C) 1998, 1999, 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
+// .
+
+// 21.3.6.8 basic_string::compare
+// int compare(const basic_string& str) const;
+// int compare(size_type pos1, size_type n1, const basic_string& str) const;
+// int compare(size_type pos1, size_type n1, const basic_string& str,
+// size_type pos2, size_type n2) const;
+// int compare(const charT* s) const;
+// int compare(size_type pos1, size_type n1,
+// const charT* s, size_type n2 = npos) const;
+
+// NB compare should be thought of as a lexographical compare, ie how
+// things would be sorted in a dictionary.
+
+#include
+#include
+
+enum want_value {lt=0, z=1, gt=2};
+
+int
+test_value(int result, want_value expected);
+
+int
+test_value(int result, want_value expected)
+{
+ bool test __attribute__((unused)) = true;
+ bool pass = false;
+
+ switch (expected) {
+ case lt:
+ if (result < 0)
+ pass = true;
+ break;
+ case z:
+ if (!result)
+ pass = true;
+ break;
+ case gt:
+ if (result > 0)
+ pass = true;
+ break;
+ default:
+ pass = false; //should not get here
+ }
+
+ VERIFY(pass);
+ return 0;
+}
+
+
+int
+test01()
+{
+ using namespace std;
+
+ wstring str_0(L"costa rica");
+ wstring str_1(L"costa marbella");
+ wstring str_2;
+
+ //sanity check
+ test_value(wcscmp(L"costa marbella", L"costa rica"), lt);
+ test_value(wcscmp(L"costa rica", L"costa rica"), z);
+ test_value(wcscmp(str_1.data(), str_0.data()), lt);
+ test_value(wcscmp(str_0.data(), str_1.data()), gt);
+ test_value(wcsncmp(str_1.data(), str_0.data(), 6), z);
+ test_value(wcsncmp(str_1.data(), str_0.data(), 14), lt);
+ test_value(wmemcmp(str_1.data(), str_0.data(), 6), z);
+ test_value(wmemcmp(str_1.data(), str_0.data(), 14), lt);
+ test_value(wmemcmp(L"costa marbella", L"costa rica", 14), lt);
+
+ // int compare(const basic_string& str) const;
+ test_value(str_0.compare(str_1), gt); //because r>m
+ test_value(str_1.compare(str_0), lt); //because m