re PR libstdc++/36832 (error compiling with crope)

2008-07-15  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/36832
	* include/ext/rope (_Destroy_const): Add.
	(rope<>::copy): Call it.
	* testsuite/ext/rope/36832.cc: New.

From-SVN: r137829

libstdc++-v3/ChangeLog

+2008-07-15  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR libstdc++/36832
+	* include/ext/rope (_Destroy_const): Add.
+	(rope<>::copy): Call it.
+	* testsuite/ext/rope/36832.cc: New.
+
 2008-07-15  Johannes Singler  <singler@ira.uka.de>
 
         * include/parallel/find_selectors.h:

libstdc++-v3/include/ext/rope

 // SGI's rope class -*- C++ -*-
 
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
 // Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
@@ -80,6 +80,22 @@ _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
   using std::allocator;
   using std::_Destroy;
 
+  // See libstdc++/36832.
+  template<typename _ForwardIterator, typename _Allocator>
+    void
+    _Destroy_const(_ForwardIterator __first,
+		   _ForwardIterator __last, _Allocator __alloc)
+    {
+      for (; __first != __last; ++__first)
+	__alloc.destroy(&*__first);
+    }
+
+  template<typename _ForwardIterator, typename _Tp>
+    inline void
+    _Destroy_const(_ForwardIterator __first,
+		   _ForwardIterator __last, allocator<_Tp>)
+    { _Destroy(__first, __last); }
+
   // The _S_eos function is used for those functions that
   // convert to/from C-like strings to detect the end of the string.
   
@@ -1941,11 +1957,11 @@ protected:
 	this->_M_tree_ptr = _S_balance(this->_M_tree_ptr);
 	_S_unref(__old);
       }
-      
+
       void
       copy(_CharT* __buffer) const
       {
-	_Destroy(__buffer, __buffer + size(), _M_get_allocator());
+	_Destroy_const(__buffer, __buffer + size(), _M_get_allocator());
 	_S_flatten(this->_M_tree_ptr, __buffer);
       }
 
@@ -1959,8 +1975,8 @@ protected:
       {
 	size_t __size = size();
 	size_t __len = (__pos + __n > __size? __size - __pos : __n);
-	
-	_Destroy(__buffer, __buffer + __len, _M_get_allocator());
+
+	_Destroy_const(__buffer, __buffer + __len, _M_get_allocator());
 	_S_flatten(this->_M_tree_ptr, __pos, __len, __buffer);
 	return __len;
       }

libstdc++-v3/testsuite/ext/rope/36832.cc

+// Copyright (C) 2008 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 2, 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 COPYING.  If not, write to the Free
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+// USA.
+
+// rope (SGI extension)
+
+#include <ext/rope>
+
+// libstdc++/36832
+void test01()
+{
+ __gnu_cxx::crope myRope;
+ myRope = "1234567890";
+ char buffer[100]; 
+ myRope.copy(1, 1, buffer);
+}
+
+int main()
+{
+  test01();
+  return 0;
+}