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extern/stdcxx/4.2.1/tests/regress/27.stringbuf.str.stdcxx-514.cpp

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+/************************************************************************
+ *
+ * 27.stringbuf.str.stdcxx-514.cpp - test case from STDCXX-514 issue
+ *
+ * $Id: 27.stringbuf.str.stdcxx-514.cpp 580483 2007-09-28 20:55:52Z sebor $
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ * 
+ **************************************************************************/
+
+#include <sstream>  // for stringbuf
+#include <memory>   // for allocator
+
+#include <cassert>  // for assert()
+
+char extbuf [3];
+
+struct MyAlloc : std::allocator <char>
+{
+    pointer allocate (size_type __n, std::allocator<void>::const_pointer = 0) {
+        return new char [__n];
+    }
+
+    void deallocate (pointer __p, size_type)
+    {
+        assert (extbuf != __p);
+        delete [] __p;
+    }
+};
+
+int main ()
+{
+    std::basic_stringbuf <char, std::char_traits <char>, MyAlloc> sbuf;
+
+    sbuf.pubsetbuf (extbuf, sizeof (extbuf));
+
+    const char* str = "abcdef";
+    sbuf.str (str);
+    assert (sbuf.str () == str);
+
+    return 0;
+}