Remove V2 C++ library.

	* configure.in: Remove --enable-libstdcxx_v3 support.

	* Makefile.in (site.exp): Always set HAVE_LIBSTDCXX_V3.
	* configure.in: Remove --enable-libstdcxx_v3 support.
	* configure: Regenerated.

From-SVN: r39445

1 files changed, 0 insertions, 2540 deletions

diff --git a/libstdc++/stl/stl_rope.h b/libstdc++/stl/stl_rope.h
deleted file mode 100644
index 0d8766a..0000000
--- a/libstdc++/stl/stl_rope.h
+++ /dev/null
@@ -1,2540 +0,0 @@
-/*
- * Copyright (c) 1997
- * Silicon Graphics Computer Systems, Inc.
- *
- * Permission to use, copy, modify, distribute and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation.  Silicon Graphics makes no
- * representations about the suitability of this software for any
- * purpose.  It is provided "as is" without express or implied warranty.
- */
-
-/* NOTE: This is an internal header file, included by other STL headers.
- *   You should not attempt to use it directly.
- */
-
-// rope<_CharT,_Alloc> is a sequence of _CharT.
-// Ropes appear to be mutable, but update operations
-// really copy enough of the data structure to leave the original
-// valid.  Thus ropes can be logically copied by just copying
-// a pointer value.
-
-#ifndef __SGI_STL_INTERNAL_ROPE_H
-# define __SGI_STL_INTERNAL_ROPE_H
-
-# ifdef __GC
-#   define __GC_CONST const
-# else
-#   define __GC_CONST   // constant except for deallocation
-# endif
-# ifdef __STL_SGI_THREADS
-#    include <mutex.h>
-# endif
-
-__STL_BEGIN_NAMESPACE
-
-#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
-#pragma set woff 1174
-#endif
-
-// The _S_eos function is used for those functions that
-// convert to/from C-like strings to detect the end of the string.
-
-// The end-of-C-string character.
-// This is what the draft standard says it should be.
-template <class _CharT>
-inline _CharT _S_eos(_CharT*) { return _CharT(); }
-
-// Test for basic character types.
-// For basic character types leaves having a trailing eos.
-template <class _CharT>
-inline bool _S_is_basic_char_type(_CharT*) { return false; }
-template <class _CharT>
-inline bool _S_is_one_byte_char_type(_CharT*) { return false; }
-
-inline bool _S_is_basic_char_type(char*) { return true; }
-inline bool _S_is_one_byte_char_type(char*) { return true; }
-inline bool _S_is_basic_char_type(wchar_t*) { return true; }
-
-// Store an eos iff _CharT is a basic character type.
-// Do not reference _S_eos if it isn't.
-template <class _CharT>
-inline void _S_cond_store_eos(_CharT&) {}
-
-inline void _S_cond_store_eos(char& __c) { __c = 0; }
-inline void _S_cond_store_eos(wchar_t& __c) { __c = 0; }
-
-// char_producers are logically functions that generate a section of
-// a string.  These can be convereted to ropes.  The resulting rope
-// invokes the char_producer on demand.  This allows, for example,
-// files to be viewed as ropes without reading the entire file.
-template <class _CharT>
-class char_producer {
-    public:
-        virtual ~char_producer() {};
-        virtual void operator()(size_t __start_pos, size_t __len, 
-                                _CharT* __buffer) = 0;
-        // Buffer should really be an arbitrary output iterator.
-        // That way we could flatten directly into an ostream, etc.
-        // This is thoroughly impossible, since iterator types don't
-        // have runtime descriptions.
-};
-
-// Sequence buffers:
-//
-// Sequence must provide an append operation that appends an
-// array to the sequence.  Sequence buffers are useful only if
-// appending an entire array is cheaper than appending element by element.
-// This is true for many string representations.
-// This should  perhaps inherit from ostream<sequence::value_type>
-// and be implemented correspondingly, so that they can be used
-// for formatted.  For the sake of portability, we don't do this yet.
-//
-// For now, sequence buffers behave as output iterators.  But they also
-// behave a little like basic_ostringstream<sequence::value_type> and a
-// little like containers.
-
-template<class _Sequence, size_t _Buf_sz = 100
-#   if defined(__sgi) && !defined(__GNUC__)
-#        define __TYPEDEF_WORKAROUND
-         ,class _V = typename _Sequence::value_type
-#   endif
-        >
-// The 3rd parameter works around a common compiler bug.
-class sequence_buffer : public output_iterator {
-    public:
-#       ifndef __TYPEDEF_WORKAROUND
-            typedef typename _Sequence::value_type value_type;
-#       else
-            typedef _V value_type;
-#       endif
-    protected:
-        _Sequence* _M_prefix;
-        value_type _M_buffer[_Buf_sz];
-        size_t     _M_buf_count;
-    public:
-        void flush() {
-            _M_prefix->append(_M_buffer, _M_buffer + _M_buf_count);
-            _M_buf_count = 0;
-        }
-        ~sequence_buffer() { flush(); }
-        sequence_buffer() : _M_prefix(0), _M_buf_count(0) {}
-        sequence_buffer(const sequence_buffer& __x) {
-            _M_prefix = __x._M_prefix;
-            _M_buf_count = __x._M_buf_count;
-            copy(__x._M_buffer, __x._M_buffer + __x._M_buf_count, _M_buffer);
-        }
-        sequence_buffer(sequence_buffer& __x) {
-            __x.flush();
-            _M_prefix = __x._M_prefix;
-            _M_buf_count = 0;
-        }
-        sequence_buffer(_Sequence& __s) : _M_prefix(&__s), _M_buf_count(0) {}
-        sequence_buffer& operator= (sequence_buffer& __x) {
-            __x.flush();
-            _M_prefix = __x._M_prefix;
-            _M_buf_count = 0;
-            return *this;
-        }
-        sequence_buffer& operator= (const sequence_buffer& __x) {
-            _M_prefix = __x._M_prefix;
-            _M_buf_count = __x._M_buf_count;
-            copy(__x._M_buffer, __x._M_buffer + __x._M_buf_count, _M_buffer);
-            return *this;
-        }
-        void push_back(value_type __x)
-        {
-            if (_M_buf_count < _Buf_sz) {
-                _M_buffer[_M_buf_count] = __x;
-                ++_M_buf_count;
-            } else {
-                flush();
-                _M_buffer[0] = __x;
-                _M_buf_count = 1;
-            }
-        }
-        void append(value_type* __s, size_t __len)
-        {
-            if (__len + _M_buf_count <= _Buf_sz) {
-                size_t __i = _M_buf_count;
-                size_t __j = 0;
-                for (; __j < __len; __i++, __j++) {
-                    _M_buffer[__i] = __s[__j];
-                }
-                _M_buf_count += __len;
-            } else if (0 == _M_buf_count) {
-                _M_prefix->append(__s, __s + __len);
-            } else {
-                flush();
-                append(__s, __len);
-            }
-        }
-        sequence_buffer& write(value_type* __s, size_t __len)
-        {
-            append(__s, __len);
-            return *this;
-        }
-        sequence_buffer& put(value_type __x)
-        {
-            push_back(__x);
-            return *this;
-        }
-        sequence_buffer& operator=(const value_type& __rhs)
-        {
-            push_back(__rhs);
-            return *this;
-        }
-        sequence_buffer& operator*() { return *this; }
-        sequence_buffer& operator++() { return *this; }
-        sequence_buffer& operator++(int) { return *this; }
-};
-
-// The following should be treated as private, at least for now.
-template<class _CharT>
-class _Rope_char_consumer {
-    public:
-        // If we had member templates, these should not be virtual.
-        // For now we need to use run-time parametrization where
-        // compile-time would do.  _Hence this should all be private
-        // for now.
-        // The symmetry with char_producer is accidental and temporary.
-        virtual ~_Rope_char_consumer() {};
-        virtual bool operator()(const _CharT* __buffer, size_t __len) = 0;
-};
-
-//
-// What follows should really be local to rope.  Unfortunately,
-// that doesn't work, since it makes it impossible to define generic
-// equality on rope iterators.  According to the draft standard, the
-// template parameters for such an equality operator cannot be inferred
-// from the occurence of a member class as a parameter.
-// (SGI compilers in fact allow this, but the __result wouldn't be
-// portable.)
-// Similarly, some of the static member functions are member functions
-// only to avoid polluting the global namespace, and to circumvent
-// restrictions on type inference for template functions.
-//
-
-template<class _CharT, class _Alloc=__STL_DEFAULT_ALLOCATOR(_CharT)> class rope;
-template<class _CharT, class _Alloc> struct _Rope_RopeConcatenation;
-template<class _CharT, class _Alloc> struct _Rope_RopeLeaf;
-template<class _CharT, class _Alloc> struct _Rope_RopeFunction;
-template<class _CharT, class _Alloc> struct _Rope_RopeSubstring;
-template<class _CharT, class _Alloc> class _Rope_iterator;
-template<class _CharT, class _Alloc> class _Rope_const_iterator;
-template<class _CharT, class _Alloc> class _Rope_char_ref_proxy;
-template<class _CharT, class _Alloc> class _Rope_char_ptr_proxy;
-
-//
-// The internal data structure for representing a rope.  This is
-// private to the implementation.  A rope is really just a pointer
-// to one of these.
-//
-// A few basic functions for manipulating this data structure
-// are members of _RopeRep.  Most of the more complex algorithms
-// are implemented as rope members.
-//
-// Some of the static member functions of _RopeRep have identically
-// named functions in rope that simply invoke the _RopeRep versions.
-//
-// A macro to introduce various allocation and deallocation functions
-// These need to be defined differently depending on whether or not
-// we are using standard conforming allocators, and whether the allocator
-// instances have real state.  Thus this macro is invoked repeatedly
-// with different definitions of __ROPE_DEFINE_ALLOC.
-// __ROPE_DEFINE_ALLOC(type,name) defines 
-//   type * name_allocate(size_t) and
-//   void name_deallocate(tipe *, size_t)
-// Both functions may or may not be static.
-
-#define __ROPE_DEFINE_ALLOCS(__a) \
-        __ROPE_DEFINE_ALLOC(_CharT,_Data) /* character data */ \
-        typedef _Rope_RopeConcatenation<_CharT,__a> __C; \
-        __ROPE_DEFINE_ALLOC(__C,_C) \
-        typedef _Rope_RopeLeaf<_CharT,__a> __L; \
-        __ROPE_DEFINE_ALLOC(__L,_L) \
-        typedef _Rope_RopeFunction<_CharT,__a> __F; \
-        __ROPE_DEFINE_ALLOC(__F,_F) \
-        typedef _Rope_RopeSubstring<_CharT,__a> __S; \
-        __ROPE_DEFINE_ALLOC(__S,_S)
-
-//  Internal rope nodes potentially store a copy of the allocator
-//  instance used to allocate them.  This is mostly redundant.
-//  But the alternative would be to pass allocator instances around
-//  in some form to nearly all internal functions, since any pointer
-//  assignment may result in a zero reference count and thus require
-//  deallocation.
-//  The _Rope_rep_base class encapsulates
-//  the differences between SGI-style allocators and standard-conforming
-//  allocators.
-
-#ifdef __STL_USE_STD_ALLOCATORS
-
-#define __STATIC_IF_SGI_ALLOC  /* not static */
-
-// Base class for ordinary allocators.
-template <class _CharT, class _Allocator, bool _IsStatic>
-class _Rope_rep_alloc_base {
-public:
-  typedef typename _Alloc_traits<_CharT,_Allocator>::allocator_type
-          allocator_type;
-  allocator_type get_allocator() const { return _M_data_allocator; }
-  _Rope_rep_alloc_base(size_t __size, const allocator_type& __a)
-        : _M_size(__size), _M_data_allocator(__a) {}
-  size_t _M_size;       // This is here only to avoid wasting space
-                // for an otherwise empty base class.
-
-  
-protected:
-    allocator_type _M_data_allocator;
-
-# define __ROPE_DEFINE_ALLOC(_Tp, __name) \
-        typedef typename \
-          _Alloc_traits<_Tp,_Allocator>::allocator_type __name##Allocator; \
-        /*static*/ _Tp * __name##_allocate(size_t __n) \
-          { return __name##Allocator(_M_data_allocator).allocate(__n); } \
-        void __name##_deallocate(_Tp* __p, size_t __n) \
-          { __name##Allocator(_M_data_allocator).deallocate(__p, __n); }
-  __ROPE_DEFINE_ALLOCS(_Allocator);
-# undef __ROPE_DEFINE_ALLOC
-};
-
-// Specialization for allocators that have the property that we don't
-//  actually have to store an allocator object.  
-template <class _CharT, class _Allocator>
-class _Rope_rep_alloc_base<_CharT,_Allocator,true> {
-public:
-  typedef typename _Alloc_traits<_CharT,_Allocator>::allocator_type
-          allocator_type;
-  allocator_type get_allocator() const { return allocator_type(); }
-  _Rope_rep_alloc_base(size_t __size, const allocator_type&)
-                : _M_size(__size) {}
-  size_t _M_size;
-  
-protected:
-
-# define __ROPE_DEFINE_ALLOC(_Tp, __name) \
-        typedef typename \
-          _Alloc_traits<_Tp,_Allocator>::_Alloc_type __name##Alloc; \
-        typedef typename \
-          _Alloc_traits<_Tp,_Allocator>::allocator_type __name##Allocator; \
-        static _Tp* __name##_allocate(size_t __n) \
-                { return __name##Alloc::allocate(__n); } \
-        void __name##_deallocate(_Tp *__p, size_t __n) \
-                { __name##Alloc::deallocate(__p, __n); }
-  __ROPE_DEFINE_ALLOCS(_Allocator);
-# undef __ROPE_DEFINE_ALLOC
-};
-
-template <class _CharT, class _Alloc>
-struct _Rope_rep_base
-  : public _Rope_rep_alloc_base<_CharT,_Alloc,
-                                _Alloc_traits<_CharT,_Alloc>::_S_instanceless>
-{
-  typedef _Rope_rep_alloc_base<_CharT,_Alloc,
-                               _Alloc_traits<_CharT,_Alloc>::_S_instanceless>
-          _Base;
-  typedef typename _Base::allocator_type allocator_type;
-  _Rope_rep_base(size_t __size, const allocator_type& __a)
-    : _Base(__size, __a) {}
-};    
-
-#else /* !__STL_USE_STD_ALLOCATORS */
-
-#define __STATIC_IF_SGI_ALLOC static
-
-template <class _CharT, class _Alloc> 
-class _Rope_rep_base {
-public:
-  typedef _Alloc allocator_type;
-  static allocator_type get_allocator() { return allocator_type(); }
-  _Rope_rep_base(size_t __size, const allocator_type&) : _M_size(__size) {}
-  size_t _M_size;
-
-protected:
-
-# define __ROPE_DEFINE_ALLOC(_Tp, __name) \
-        typedef simple_alloc<_Tp, _Alloc> __name##Alloc; \
-        static _Tp* __name##_allocate(size_t __n) \
-                { return __name##Alloc::allocate(__n); } \
-        static void __name##_deallocate(_Tp* __p, size_t __n) \
-                { __name##Alloc::deallocate(__p, __n); }
-  __ROPE_DEFINE_ALLOCS(_Alloc);
-# undef __ROPE_DEFINE_ALLOC
-};
-
-#endif /* __STL_USE_STD_ALLOCATORS */
-
-
-template<class _CharT, class _Alloc>
-struct _Rope_RopeRep : public _Rope_rep_base<_CharT,_Alloc> {
-    public:
-    enum { _S_max_rope_depth = 45 };
-    enum _Tag {_S_leaf, _S_concat, _S_substringfn, _S_function};
-    _Tag _M_tag:8;
-    bool _M_is_balanced:8;
-    unsigned char _M_depth;
-    __GC_CONST _CharT* _M_c_string;
-                        /* Flattened version of string, if needed.  */
-                        /* typically 0.                             */
-                        /* If it's not 0, then the memory is owned  */
-                        /* by this node.                            */
-                        /* In the case of a leaf, this may point to */
-                        /* the same memory as the data field.       */
-    typedef _Rope_rep_base<_CharT,_Alloc>::allocator_type allocator_type;
-    _Rope_RopeRep(_Tag __t, int __d, bool __b, size_t __size,
-                  allocator_type __a)
-        : _Rope_rep_base<_CharT,_Alloc>(__size, __a),
-          _M_tag(__t), _M_depth(__d), _M_is_balanced(__b), _M_c_string(0)
-    {
-#       ifndef __GC
-            _M_refcount = 1;
-            _M_init_refcount_lock();
-#       endif
-    }
-#   ifndef __GC
-#       if defined(__STL_WIN32THREADS)
-            long _M_refcount;   // InterlockedIncrement wants a long *
-#       else
-            size_t _M_refcount;
-#       endif
-        // We count references from rope instances
-        // and references from other rope nodes.  We
-        // do not count const_iterator references.
-        // Iterator references are counted so that rope modifications
-        // can be detected after the fact.
-        // Generally function results are counted, i.__e.
-        // a pointer returned by a function is included at the
-        // point at which the pointer is returned.
-        // The recipient should decrement the count if the
-        // __result is not needed.
-        // Generally function arguments are not reflected
-        // in the reference count.  The callee should increment
-        // the count before saving the argument someplace that
-        // will outlive the call.
-#   endif
-#   ifndef __GC
-#       ifdef __STL_SGI_THREADS
-            // Reference counting with multiple threads and no
-            // hardware or thread package support is pretty awful.
-            // Mutexes are normally too expensive.
-            // We'll assume a COMPARE_AND_SWAP(destp, __old, new)
-            // operation, which might be cheaper.
-#           if __mips < 3 || !(defined (_ABIN32) || defined(_ABI64))
-#               define __add_and_fetch(l,v) add_then_test((unsigned long*)l,v)
-#           endif
-            void _M_init_refcount_lock() {}
-            void _M_incr_refcount ()
-            {
-                __add_and_fetch(&_M_refcount, 1);
-            }
-            size_t _M_decr_refcount ()
-            {
-                return __add_and_fetch(&_M_refcount, (size_t)(-1));
-            }
-#       elif defined(__STL_WIN32THREADS)
-            void _M_init_refcount_lock() {}
-            void _M_incr_refcount ()
-            {
-                InterlockedIncrement(&_M_refcount);
-            }
-            size_t _M_decr_refcount ()
-            {
-                return InterlockedDecrement(&_M_refcount);
-            }
-#	elif defined(__STL_PTHREADS)
-            // This should be portable, but performance is expected
-            // to be quite awful.  This really needs platform specific
-            // code.
-            pthread_mutex_t _M_refcount_lock;
-            void _M_init_refcount_lock() {
-                pthread_mutex_init(&_M_refcount_lock, 0);
-            }
-            void _M_incr_refcount ()
-            {   
-                pthread_mutex_lock(&_M_refcount_lock);
-                ++_M_refcount;
-                pthread_mutex_unlock(&_M_refcount_lock);
-            }
-            size_t _M_decr_refcount ()
-            {   
-                size_t __result;
-                pthread_mutex_lock(&_M_refcount_lock);
-                __result = --_M_refcount;
-                pthread_mutex_unlock(&_M_refcount_lock);
-                return __result;
-            }
-#       else
-            void _M_init_refcount_lock() {}
-            void _M_incr_refcount ()
-            {
-                ++_M_refcount;
-            }
-            size_t _M_decr_refcount ()
-            {
-                --_M_refcount;
-                return _M_refcount;
-            }
-#       endif
-#   else
-        void _M_incr_refcount () {}
-#   endif
-#   ifdef __STL_USE_STD_ALLOCATORS
-        static void _S_free_string(__GC_CONST _CharT*, size_t __len,
-                                   allocator_type __a);
-#       define __STL_FREE_STRING(__s, __l, __a) _S_free_string(__s, __l, __a);
-#   else
-        static void _S_free_string(__GC_CONST _CharT*, size_t __len);
-#       define __STL_FREE_STRING(__s, __l, __a) _S_free_string(__s, __l);
-#   endif
-                        // Deallocate data section of a leaf.
-                        // This shouldn't be a member function.
-                        // But its hard to do anything else at the
-                        // moment, because it's templatized w.r.t.
-                        // an allocator.
-                        // Does nothing if __GC is defined.
-#   ifndef __GC
-          void _M_free_c_string();
-          void _M_free_tree();
-                        // Deallocate t. Assumes t is not 0.
-          void _M_unref_nonnil()
-          {
-              if (0 == _M_decr_refcount()) _M_free_tree();
-          }
-          void _M_ref_nonnil()
-          {
-              _M_incr_refcount();
-          }
-          static void _S_unref(_Rope_RopeRep* __t)
-          {
-              if (0 != __t) {
-                  __t->_M_unref_nonnil();
-              }
-          }
-          static void _S_ref(_Rope_RopeRep* __t)
-          {
-              if (0 != __t) __t->_M_incr_refcount();
-          }
-          static void _S_free_if_unref(_Rope_RopeRep* __t)
-          {
-              if (0 != __t && 0 == __t->_M_refcount) __t->_M_free_tree();
-          }
-#   else /* __GC */
-          void _M_unref_nonnil() {}
-          void _M_ref_nonnil() {}
-          static void _S_unref(_Rope_RopeRep*) {}
-          static void _S_ref(_Rope_RopeRep*) {}
-          static void _S_free_if_unref(_Rope_RopeRep*) {}
-#   endif
-
-};
-
-template<class _CharT, class _Alloc>
-struct _Rope_RopeLeaf : public _Rope_RopeRep<_CharT,_Alloc> {
-  public:
-    // Apparently needed by VC++
-    // The data fields of leaves are allocated with some
-    // extra space, to accomodate future growth and for basic
-    // character types, to hold a trailing eos character.
-    enum { _S_alloc_granularity = 8 };
-    static size_t _S_rounded_up_size(size_t __n) {
-        size_t __size_with_eos;
-             
-        if (_S_is_basic_char_type((_CharT*)0)) {
-            __size_with_eos = __n + 1;
-        } else {
-            __size_with_eos = __n;
-        }
-#       ifdef __GC
-           return __size_with_eos;
-#       else
-           // Allow slop for in-place expansion.
-           return (__size_with_eos + _S_alloc_granularity-1)
-                        &~ (_S_alloc_granularity-1);
-#       endif
-    }
-    __GC_CONST _CharT* _M_data; /* Not necessarily 0 terminated. */
-                                /* The allocated size is         */
-                                /* _S_rounded_up_size(size), except */
-                                /* in the GC case, in which it   */
-                                /* doesn't matter.               */
-    typedef _Rope_rep_base<_CharT,_Alloc>::allocator_type allocator_type;
-    _Rope_RopeLeaf(__GC_CONST _CharT* __d, size_t __size, allocator_type __a)
-        : _Rope_RopeRep<_CharT,_Alloc>(_S_leaf, 0, true, __size, __a),
-         _M_data(__d)
-        {
-        __stl_assert(__size > 0);
-        if (_S_is_basic_char_type((_CharT *)0)) {
-            // already eos terminated.
-            _M_c_string = __d;
-        }
-    }
-        // The constructor assumes that d has been allocated with
-        // the proper allocator and the properly padded size.
-        // In contrast, the destructor deallocates the data:
-# ifndef __GC
-    ~_Rope_RopeLeaf() {
-        if (_M_data != _M_c_string) {
-            _M_free_c_string();
-        }
-        __STL_FREE_STRING(_M_data, _M_size, get_allocator());
-    }
-# endif
-};
-
-template<class _CharT, class _Alloc>
-struct _Rope_RopeConcatenation : public _Rope_RopeRep<_CharT,_Alloc> {
-  public:
-    _Rope_RopeRep<_CharT,_Alloc>* _M_left;
-    _Rope_RopeRep<_CharT,_Alloc>* _M_right;
-    typedef _Rope_rep_base<_CharT,_Alloc>::allocator_type allocator_type;
-    _Rope_RopeConcatenation(_Rope_RopeRep<_CharT,_Alloc>* __l,
-                             _Rope_RopeRep<_CharT,_Alloc>* __r,
-                             allocator_type __a)
-      : _Rope_RopeRep<_CharT,_Alloc>(
-          _S_concat, max(__l->_M_depth, __r->_M_depth) + 1, false,
-          __l->_M_size + __r->_M_size, __a),
-      _M_left(__l), _M_right(__r)
-      {}
-# ifndef __GC
-    ~_Rope_RopeConcatenation() {
-        _M_free_c_string();
-        _M_left->_M_unref_nonnil();
-        _M_right->_M_unref_nonnil();
-    }
-# endif
-};
-
-template<class _CharT, class _Alloc>
-struct _Rope_RopeFunction : public _Rope_RopeRep<_CharT,_Alloc> {
-  public:
-    char_producer<_CharT>* _M_fn;
-#   ifndef __GC
-      bool _M_delete_when_done; // Char_producer is owned by the
-                                // rope and should be explicitly
-                                // deleted when the rope becomes
-                                // inaccessible.
-#   else
-      // In the GC case, we either register the rope for
-      // finalization, or not.  Thus the field is unnecessary;
-      // the information is stored in the collector data structures.
-      // We do need a finalization procedure to be invoked by the
-      // collector.
-      static void _S_fn_finalization_proc(void * __tree, void *) {
-        delete ((_Rope_RopeFunction *)__tree) -> _M_fn;
-      }
-#   endif
-    typedef _Rope_rep_base<_CharT,_Alloc>::allocator_type allocator_type;
-    _Rope_RopeFunction(char_producer<_CharT>* __f, size_t __size,
-                        bool __d, allocator_type __a)
-      :_Rope_RopeRep<_CharT,_Alloc>(_S_function, 0, true, __size, __a),
-       _M_fn(__f)
-#       ifndef __GC
-      , _M_delete_when_done(__d)
-#       endif
-          {
-        __stl_assert(__size > 0);
-#       ifdef __GC
-            if (__d) {
-                GC_REGISTER_FINALIZER(
-                  this, _Rope_RopeFunction::_S_fn_finalization_proc, 0, 0, 0);
-            }
-#       endif
-    }
-# ifndef __GC
-    ~_Rope_RopeFunction() {
-          _M_free_c_string();
-          if (_M_delete_when_done) {
-              delete _M_fn;
-          }
-    }
-# endif
-};
-// Substring results are usually represented using just
-// concatenation nodes.  But in the case of very long flat ropes
-// or ropes with a functional representation that isn't practical.
-// In that case, we represent the __result as a special case of
-// RopeFunction, whose char_producer points back to the rope itself.
-// In all cases except repeated substring operations and
-// deallocation, we treat the __result as a RopeFunction.
-template<class _CharT, class _Alloc>
-struct _Rope_RopeSubstring : public _Rope_RopeFunction<_CharT,_Alloc>,
-                             public char_producer<_CharT> {
-  public:
-    // XXX this whole class should be rewritten.
-    _Rope_RopeRep<_CharT,_Alloc>* _M_base;      // not 0
-    size_t _M_start;
-    virtual void operator()(size_t __start_pos, size_t __req_len,
-                            _CharT* __buffer) {
-        switch(_M_base->_M_tag) {
-            case _S_function:
-            case _S_substringfn:
-              {
-                char_producer<_CharT>* __fn =
-                        ((_Rope_RopeFunction<_CharT,_Alloc>*)_M_base)->_M_fn;
-                __stl_assert(__start_pos + __req_len <= _M_size);
-                __stl_assert(_M_start + _M_size <= _M_base->_M_size);
-                (*__fn)(__start_pos + _M_start, __req_len, __buffer);
-              }
-              break;
-            case _S_leaf:
-              {
-                __GC_CONST _CharT* __s =
-                        ((_Rope_RopeLeaf<_CharT,_Alloc>*)_M_base)->_M_data;
-                uninitialized_copy_n(__s + __start_pos + _M_start, __req_len,
-                                     __buffer);
-              }
-              break;
-            default:
-              __stl_assert(false);
-        }
-    }
-    typedef _Rope_rep_base<_CharT,_Alloc>::allocator_type allocator_type;
-    _Rope_RopeSubstring(_Rope_RopeRep<_CharT,_Alloc>* __b, size_t __s,
-                          size_t __l, allocator_type __a)
-      : _Rope_RopeFunction<_CharT,_Alloc>(this, __l, false, __a), _M_base(__b), _M_start(__s)  
-    {
-        __stl_assert(__l > 0);
-        __stl_assert(__s + __l <= __b->_M_size);
-#       ifndef __GC
-            _M_base->_M_ref_nonnil();
-#       endif
-        _M_tag = _S_substringfn;
-    }
-    virtual ~_Rope_RopeSubstring()
-      { 
-#       ifndef __GC
-          _M_base->_M_unref_nonnil();
-          // _M_free_c_string();  -- done by parent class
-#       endif
-      }
-};
-
-
-// Self-destructing pointers to Rope_rep.
-// These are not conventional smart pointers.  Their
-// only purpose in life is to ensure that unref is called
-// on the pointer either at normal exit or if an exception
-// is raised.  It is the caller's responsibility to
-// adjust reference counts when these pointers are initialized
-// or assigned to.  (This convention significantly reduces
-// the number of potentially expensive reference count
-// updates.)
-#ifndef __GC
-  template<class _CharT, class _Alloc>
-  struct _Rope_self_destruct_ptr {
-    _Rope_RopeRep<_CharT,_Alloc>* _M_ptr;
-    ~_Rope_self_destruct_ptr() 
-      { _Rope_RopeRep<_CharT,_Alloc>::_S_unref(_M_ptr); }
-#   ifdef __STL_USE_EXCEPTIONS
-        _Rope_self_destruct_ptr() : _M_ptr(0) {};
-#   else
-        _Rope_self_destruct_ptr() {};
-#   endif
-    _Rope_self_destruct_ptr(_Rope_RopeRep<_CharT,_Alloc>* __p) : _M_ptr(__p) {}
-    _Rope_RopeRep<_CharT,_Alloc>& operator*() { return *_M_ptr; }
-    _Rope_RopeRep<_CharT,_Alloc>* operator->() { return _M_ptr; }
-    operator _Rope_RopeRep<_CharT,_Alloc>*() { return _M_ptr; }
-    _Rope_self_destruct_ptr& operator= (_Rope_RopeRep<_CharT,_Alloc>* __x)
-        { _M_ptr = __x; return *this; }
-  };
-#endif
-
-// Dereferencing a nonconst iterator has to return something
-// that behaves almost like a reference.  It's not possible to
-// return an actual reference since assignment requires extra
-// work.  And we would get into the same problems as with the
-// CD2 version of basic_string.
-template<class _CharT, class _Alloc>
-class _Rope_char_ref_proxy {
-    friend class rope<_CharT,_Alloc>;
-    friend class _Rope_iterator<_CharT,_Alloc>;
-    friend class _Rope_char_ptr_proxy<_CharT,_Alloc>;
-#   ifdef __GC
-        typedef _Rope_RopeRep<_CharT,_Alloc>* _Self_destruct_ptr;
-#   else
-        typedef _Rope_self_destruct_ptr<_CharT,_Alloc> _Self_destruct_ptr;
-#   endif
-    typedef _Rope_RopeRep<_CharT,_Alloc> _RopeRep;
-    typedef rope<_CharT,_Alloc> _My_rope;
-    size_t _M_pos;
-    _CharT _M_current;
-    bool _M_current_valid;
-    _My_rope* _M_root;     // The whole rope.
-  public:
-    _Rope_char_ref_proxy(_My_rope* __r, size_t __p) :
-        _M_pos(__p), _M_current_valid(false), _M_root(__r) {}
-    _Rope_char_ref_proxy(const _Rope_char_ref_proxy& __x) :
-        _M_pos(__x._M_pos), _M_current_valid(false), _M_root(__x._M_root) {}
-        // Don't preserve cache if the reference can outlive the
-        // expression.  We claim that's not possible without calling
-        // a copy constructor or generating reference to a proxy
-        // reference.  We declare the latter to have undefined semantics.
-    _Rope_char_ref_proxy(_My_rope* __r, size_t __p,
-                    _CharT __c) :
-        _M_pos(__p), _M_current(__c), _M_current_valid(true), _M_root(__r) {}
-    inline operator _CharT () const;
-    _Rope_char_ref_proxy& operator= (_CharT __c);
-    _Rope_char_ptr_proxy<_CharT,_Alloc> operator& () const;
-    _Rope_char_ref_proxy& operator= (const _Rope_char_ref_proxy& __c) {
-        return operator=((_CharT)__c); 
-    }
-};
-
-#ifdef __STL_FUNCTION_TMPL_PARTIAL_ORDER
-    template<class _CharT, class __Alloc>
-    inline void swap(_Rope_char_ref_proxy <_CharT, __Alloc > __a,
-                     _Rope_char_ref_proxy <_CharT, __Alloc > __b) {
-        _CharT __tmp = __a;
-        __a = __b;
-        __b = __tmp;
-    }
-#else
-// There is no really acceptable way to handle this.  The default
-// definition of swap doesn't work for proxy references.
-// It can't really be made to work, even with ugly hacks, since
-// the only unusual operation it uses is the copy constructor, which
-// is needed for other purposes.  We provide a macro for
-// full specializations, and instantiate the most common case.
-# define _ROPE_SWAP_SPECIALIZATION(_CharT, __Alloc) \
-    inline void swap(_Rope_char_ref_proxy <_CharT, __Alloc > __a, \
-                     _Rope_char_ref_proxy <_CharT, __Alloc > __b) { \
-        _CharT __tmp = __a; \
-        __a = __b; \
-        __b = __tmp; \
-    }
-
-_ROPE_SWAP_SPECIALIZATION(char,__STL_DEFAULT_ALLOCATOR(char))
-
-#endif /* !__STL_FUNCTION_TMPL_PARTIAL_ORDER */
-
-template<class _CharT, class _Alloc>
-class _Rope_char_ptr_proxy {
-    // XXX this class should be rewritten.
-    friend class _Rope_char_ref_proxy<_CharT,_Alloc>;
-    size_t _M_pos;
-    rope<_CharT,_Alloc>* _M_root;     // The whole rope.
-  public:
-    _Rope_char_ptr_proxy(const _Rope_char_ref_proxy<_CharT,_Alloc>& __x) 
-      : _M_pos(__x._M_pos), _M_root(__x._M_root) {}
-    _Rope_char_ptr_proxy(const _Rope_char_ptr_proxy& __x)
-      : _M_pos(__x._M_pos), _M_root(__x._M_root) {}
-    _Rope_char_ptr_proxy() {}
-    _Rope_char_ptr_proxy(_CharT* __x) : _M_root(0), _M_pos(0) {
-        __stl_assert(0 == __x);
-    }
-    _Rope_char_ptr_proxy& 
-    operator= (const _Rope_char_ptr_proxy& __x) {
-        _M_pos = __x._M_pos;
-        _M_root = __x._M_root;
-        return *this;
-    }
-    friend bool operator==  __STL_NULL_TMPL_ARGS
-                (const _Rope_char_ptr_proxy<_CharT,_Alloc>& __x,
-                 const _Rope_char_ptr_proxy<_CharT,_Alloc>& __y);
-
-    _Rope_char_ref_proxy<_CharT,_Alloc> operator*() const {
-        return _Rope_char_ref_proxy<_CharT,_Alloc>(_M_root, _M_pos);
-    }
-};
-
-
-// Rope iterators:
-// Unlike in the C version, we cache only part of the stack
-// for rope iterators, since they must be efficiently copyable.
-// When we run out of cache, we have to reconstruct the iterator
-// value.
-// Pointers from iterators are not included in reference counts.
-// Iterators are assumed to be thread private.  Ropes can
-// be shared.
-
-#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
-#pragma set woff 1375
-#endif
-
-template<class _CharT, class _Alloc>
-class _Rope_iterator_base
-  : public random_access_iterator<_CharT, ptrdiff_t> {
-    friend class rope<_CharT,_Alloc>;
-  public:
-    typedef _Rope_RopeRep<_CharT,_Alloc> _RopeRep;
-        // Borland doesnt want this to be protected.
-  protected:
-    enum { _S_path_cache_len = 4 }; // Must be <= 9.
-    enum { _S_iterator_buf_len = 15 };
-    size_t _M_current_pos;
-    _RopeRep* _M_root;     // The whole rope.
-    size_t _M_leaf_pos;    // Starting position for current leaf
-    __GC_CONST _CharT* _M_buf_start;
-                        // Buffer possibly
-                        // containing current char.
-    __GC_CONST _CharT* _M_buf_ptr;
-                        // Pointer to current char in buffer.
-                        // != 0 ==> buffer valid.
-    __GC_CONST _CharT* _M_buf_end;
-                        // One past __last valid char in buffer.
-    // What follows is the path cache.  We go out of our
-    // way to make this compact.
-    // Path_end contains the bottom section of the path from
-    // the root to the current leaf.
-    const _RopeRep* _M_path_end[_S_path_cache_len];
-    int _M_leaf_index;     // Last valid __pos in path_end;
-                        // _M_path_end[0] ... _M_path_end[leaf_index-1]
-                        // point to concatenation nodes.
-    unsigned char _M_path_directions;
-                          // (path_directions >> __i) & 1 is 1
-                          // iff we got from _M_path_end[leaf_index - __i - 1]
-                          // to _M_path_end[leaf_index - __i] by going to the
-                          // __right. Assumes path_cache_len <= 9.
-    _CharT _M_tmp_buf[_S_iterator_buf_len];
-                        // Short buffer for surrounding chars.
-                        // This is useful primarily for 
-                        // RopeFunctions.  We put the buffer
-                        // here to avoid locking in the
-                        // multithreaded case.
-    // The cached path is generally assumed to be valid
-    // only if the buffer is valid.
-    static void _S_setbuf(_Rope_iterator_base& __x);
-                                        // Set buffer contents given
-                                        // path cache.
-    static void _S_setcache(_Rope_iterator_base& __x);
-                                        // Set buffer contents and
-                                        // path cache.
-    static void _S_setcache_for_incr(_Rope_iterator_base& __x);
-                                        // As above, but assumes path
-                                        // cache is valid for previous posn.
-    _Rope_iterator_base() {}
-    _Rope_iterator_base(_RopeRep* __root, size_t __pos)
-      : _M_root(__root), _M_current_pos(__pos), _M_buf_ptr(0) {}
-    void _M_incr(size_t __n);
-    void _M_decr(size_t __n);
-  public:
-    size_t index() const { return _M_current_pos; }
-    _Rope_iterator_base(const _Rope_iterator_base& __x) {
-        if (0 != __x._M_buf_ptr) {
-            *this = __x;
-        } else {
-            _M_current_pos = __x._M_current_pos;
-            _M_root = __x._M_root;
-            _M_buf_ptr = 0;
-        }
-    }
-};
-
-template<class _CharT, class _Alloc> class _Rope_iterator;
-
-template<class _CharT, class _Alloc>
-class _Rope_const_iterator : public _Rope_iterator_base<_CharT,_Alloc> {
-    friend class rope<_CharT,_Alloc>;
-  protected:
-    _Rope_const_iterator(const _RopeRep* __root, size_t __pos):
-                   _Rope_iterator_base<_CharT,_Alloc>(
-                     const_cast<_RopeRep*>(__root), __pos)
-                   // Only nonconst iterators modify root ref count
-    {}
-  public:
-    typedef _CharT reference;   // Really a value.  Returning a reference
-                                // Would be a mess, since it would have
-                                // to be included in refcount.
-    typedef const _CharT* pointer;
-
-  public:
-    _Rope_const_iterator() {};
-    _Rope_const_iterator(const _Rope_const_iterator& __x) :
-                                _Rope_iterator_base<_CharT,_Alloc>(__x) { }
-    _Rope_const_iterator(const _Rope_iterator<_CharT,_Alloc>& __x);
-    _Rope_const_iterator(const rope<_CharT,_Alloc>& __r, size_t __pos) :
-        _Rope_iterator_base<_CharT,_Alloc>(__r._M_tree_ptr, __pos) {}
-    _Rope_const_iterator& operator= (const _Rope_const_iterator& __x) {
-        if (0 != __x._M_buf_ptr) {
-            *(static_cast<_Rope_iterator_base<_CharT,_Alloc>*>(this)) = __x;
-        } else {
-            _M_current_pos = __x._M_current_pos;
-            _M_root = __x._M_root;
-            _M_buf_ptr = 0;
-        }
-        return(*this);
-    }
-    reference operator*() {
-        if (0 == _M_buf_ptr) _S_setcache(*this);
-        return *_M_buf_ptr;
-    }
-    _Rope_const_iterator& operator++() {
-        __GC_CONST _CharT* __next;
-        if (0 != _M_buf_ptr && (__next = _M_buf_ptr + 1) < _M_buf_end) {
-            _M_buf_ptr = __next;
-            ++_M_current_pos;
-        } else {
-            _M_incr(1);
-        }
-        return *this;
-    }
-    _Rope_const_iterator& operator+=(ptrdiff_t __n) {
-        if (__n >= 0) {
-            _M_incr(__n);
-        } else {
-            _M_decr(-__n);
-        }
-        return *this;
-    }
-    _Rope_const_iterator& operator--() {
-        _M_decr(1);
-        return *this;
-    }
-    _Rope_const_iterator& operator-=(ptrdiff_t __n) {
-        if (__n >= 0) {
-            _M_decr(__n);
-        } else {
-            _M_incr(-__n);
-        }
-        return *this;
-    }
-    _Rope_const_iterator operator++(int) {
-        size_t __old_pos = _M_current_pos;
-        _M_incr(1);
-        return _Rope_const_iterator<_CharT,_Alloc>(_M_root, __old_pos);
-        // This makes a subsequent dereference expensive.
-        // Perhaps we should instead copy the iterator
-        // if it has a valid cache?
-    }
-    _Rope_const_iterator operator--(int) {
-        size_t __old_pos = _M_current_pos;
-        _M_decr(1);
-        return _Rope_const_iterator<_CharT,_Alloc>(_M_root, __old_pos);
-    }
-    friend _Rope_const_iterator<_CharT,_Alloc> operator- __STL_NULL_TMPL_ARGS
-        (const _Rope_const_iterator<_CharT,_Alloc>& __x,
-         ptrdiff_t __n);
-    friend _Rope_const_iterator<_CharT,_Alloc> operator+ __STL_NULL_TMPL_ARGS
-        (const _Rope_const_iterator<_CharT,_Alloc>& __x,
-         ptrdiff_t __n);
-    friend _Rope_const_iterator<_CharT,_Alloc> operator+ __STL_NULL_TMPL_ARGS
-        (ptrdiff_t __n,
-         const _Rope_const_iterator<_CharT,_Alloc>& __x);
-    reference operator[](size_t __n) {
-        return rope<_CharT,_Alloc>::_S_fetch(_M_root, _M_current_pos + __n);
-    }
-    friend bool operator== __STL_NULL_TMPL_ARGS
-        (const _Rope_const_iterator<_CharT,_Alloc>& __x,
-         const _Rope_const_iterator<_CharT,_Alloc>& __y);
-    friend bool operator< __STL_NULL_TMPL_ARGS
-        (const _Rope_const_iterator<_CharT,_Alloc>& __x,
-         const _Rope_const_iterator<_CharT,_Alloc>& __y);
-    friend ptrdiff_t operator- __STL_NULL_TMPL_ARGS
-        (const _Rope_const_iterator<_CharT,_Alloc>& __x,
-         const _Rope_const_iterator<_CharT,_Alloc>& __y);
-};
-
-template<class _CharT, class _Alloc>
-class _Rope_iterator : public _Rope_iterator_base<_CharT,_Alloc> {
-    friend class rope<_CharT,_Alloc>;
-  protected:
-    rope<_CharT,_Alloc>* _M_root_rope;
-        // root is treated as a cached version of this,
-        // and is used to detect changes to the underlying
-        // rope.
-        // Root is included in the reference count.
-        // This is necessary so that we can detect changes reliably.
-        // Unfortunately, it requires careful bookkeeping for the
-        // nonGC case.
-    _Rope_iterator(rope<_CharT,_Alloc>* __r, size_t __pos)
-      : _Rope_iterator_base<_CharT,_Alloc>(__r->_M_tree_ptr, __pos),
-        _M_root_rope(__r) 
-      { _RopeRep::_S_ref(_M_root); }
-
-    void _M_check();
-  public:
-    typedef _Rope_char_ref_proxy<_CharT,_Alloc>  reference;
-    typedef _Rope_char_ref_proxy<_CharT,_Alloc>* pointer;
-
-  public:
-    rope<_CharT,_Alloc>& container() { return *_M_root_rope; }
-    _Rope_iterator() {
-        _M_root = 0;  // Needed for reference counting.
-    };
-    _Rope_iterator(const _Rope_iterator& __x) :
-        _Rope_iterator_base<_CharT,_Alloc>(__x) {
-        _M_root_rope = __x._M_root_rope;
-        _RopeRep::_S_ref(_M_root);
-    }
-    _Rope_iterator(rope<_CharT,_Alloc>& __r, size_t __pos);
-    ~_Rope_iterator() {
-        _RopeRep::_S_unref(_M_root);
-    }
-    _Rope_iterator& operator= (const _Rope_iterator& __x) {
-        _RopeRep* __old = _M_root;
-
-        _RopeRep::_S_ref(__x._M_root);
-        if (0 != __x._M_buf_ptr) {
-            _M_root_rope = __x._M_root_rope;
-            *(static_cast<_Rope_iterator_base<_CharT,_Alloc>*>(this)) = __x;
-        } else {
-            _M_current_pos = __x._M_current_pos;
-            _M_root = __x._M_root;
-            _M_root_rope = __x._M_root_rope;
-            _M_buf_ptr = 0;
-        }
-        _RopeRep::_S_unref(__old);
-        return(*this);
-    }
-    reference operator*() {
-        _M_check();
-        if (0 == _M_buf_ptr) {
-            return _Rope_char_ref_proxy<_CharT,_Alloc>(
-               _M_root_rope, _M_current_pos);
-        } else {
-            return _Rope_char_ref_proxy<_CharT,_Alloc>(
-               _M_root_rope, _M_current_pos, *_M_buf_ptr);
-        }
-    }
-    _Rope_iterator& operator++() {
-        _M_incr(1);
-        return *this;
-    }
-    _Rope_iterator& operator+=(difference_type __n) {
-        if (__n >= 0) {
-            _M_incr(__n);
-        } else {
-            _M_decr(-__n);
-        }
-        return *this;
-    }
-    _Rope_iterator& operator--() {
-        _M_decr(1);
-        return *this;
-    }
-    _Rope_iterator& operator-=(difference_type __n) {
-        if (__n >= 0) {
-            _M_decr(__n);
-        } else {
-            _M_incr(-__n);
-        }
-        return *this;
-    }
-    _Rope_iterator operator++(int) {
-        size_t __old_pos = _M_current_pos;
-        _M_incr(1);
-        return _Rope_iterator<_CharT,_Alloc>(_M_root_rope, __old_pos);
-    }
-    _Rope_iterator operator--(int) {
-        size_t __old_pos = _M_current_pos;
-        _M_decr(1);
-        return _Rope_iterator<_CharT,_Alloc>(_M_root_rope, __old_pos);
-    }
-    reference operator[](ptrdiff_t __n) {
-        return _Rope_char_ref_proxy<_CharT,_Alloc>(
-          _M_root_rope, _M_current_pos + __n);
-    }
-    friend bool operator== __STL_NULL_TMPL_ARGS
-        (const _Rope_iterator<_CharT,_Alloc>& __x,
-         const _Rope_iterator<_CharT,_Alloc>& __y);
-    friend bool operator< __STL_NULL_TMPL_ARGS
-        (const _Rope_iterator<_CharT,_Alloc>& __x,
-         const _Rope_iterator<_CharT,_Alloc>& __y);
-    friend ptrdiff_t operator- __STL_NULL_TMPL_ARGS
-        (const _Rope_iterator<_CharT,_Alloc>& __x,
-         const _Rope_iterator<_CharT,_Alloc>& __y);
-    friend _Rope_iterator<_CharT,_Alloc> operator- __STL_NULL_TMPL_ARGS
-        (const _Rope_iterator<_CharT,_Alloc>& __x,
-         ptrdiff_t __n);
-    friend _Rope_iterator<_CharT,_Alloc> operator+ __STL_NULL_TMPL_ARGS
-        (const _Rope_iterator<_CharT,_Alloc>& __x,
-         ptrdiff_t __n);
-    friend _Rope_iterator<_CharT,_Alloc> operator+ __STL_NULL_TMPL_ARGS
-        (ptrdiff_t __n,
-         const _Rope_iterator<_CharT,_Alloc>& __x);
-
-};
-
-#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
-#pragma reset woff 1375
-#endif
-
-//  The rope base class encapsulates
-//  the differences between SGI-style allocators and standard-conforming
-//  allocators.
-
-#ifdef __STL_USE_STD_ALLOCATORS
-
-// Base class for ordinary allocators.
-template <class _CharT, class _Allocator, bool _IsStatic>
-class _Rope_alloc_base {
-public:
-  typedef _Rope_RopeRep<_CharT,_Allocator> _RopeRep;
-  typedef typename _Alloc_traits<_CharT,_Allocator>::allocator_type
-          allocator_type;
-  allocator_type get_allocator() const { return _M_data_allocator; }
-  _Rope_alloc_base(_RopeRep *__t, const allocator_type& __a)
-        : _M_tree_ptr(__t), _M_data_allocator(__a) {}
-  _Rope_alloc_base(const allocator_type& __a)
-        : _M_data_allocator(__a) {}
-  
-protected:
-  // The only data members of a rope:
-    allocator_type _M_data_allocator;
-    _RopeRep* _M_tree_ptr;
-
-# define __ROPE_DEFINE_ALLOC(_Tp, __name) \
-        typedef typename \
-          _Alloc_traits<_Tp,_Allocator>::allocator_type __name##Allocator; \
-        _Tp* __name##_allocate(size_t __n) const \
-          { return __name##Allocator(_M_data_allocator).allocate(__n); } \
-        void __name##_deallocate(_Tp *__p, size_t __n) const \
-                { __name##Allocator(_M_data_allocator).deallocate(__p, __n); }
-  __ROPE_DEFINE_ALLOCS(_Allocator)
-# undef __ROPE_DEFINE_ALLOC
-};
-
-// Specialization for allocators that have the property that we don't
-//  actually have to store an allocator object.  
-template <class _CharT, class _Allocator>
-class _Rope_alloc_base<_CharT,_Allocator,true> {
-public:
-  typedef _Rope_RopeRep<_CharT,_Allocator> _RopeRep;
-  typedef typename _Alloc_traits<_CharT,_Allocator>::allocator_type
-          allocator_type;
-  allocator_type get_allocator() const { return allocator_type(); }
-  _Rope_alloc_base(_RopeRep *__t, const allocator_type&)
-                : _M_tree_ptr(__t) {}
-  _Rope_alloc_base(const allocator_type&) {}
-  
-protected:
-  // The only data member of a rope:
-    _RopeRep *_M_tree_ptr;
-
-# define __ROPE_DEFINE_ALLOC(_Tp, __name) \
-        typedef typename \
-          _Alloc_traits<_Tp,_Allocator>::_Alloc_type __name##Alloc; \
-        typedef typename \
-          _Alloc_traits<_Tp,_Allocator>::allocator_type __name##Allocator; \
-        static _Tp* __name##_allocate(size_t __n) \
-          { return __name##Alloc::allocate(__n); } \
-        static void __name##_deallocate(_Tp *__p, size_t __n) \
-          { __name##Alloc::deallocate(__p, __n); }
-  __ROPE_DEFINE_ALLOCS(_Allocator)
-# undef __ROPE_DEFINE_ALLOC
-};
-
-template <class _CharT, class _Alloc>
-struct _Rope_base 
-  : public _Rope_alloc_base<_CharT,_Alloc,
-                            _Alloc_traits<_CharT,_Alloc>::_S_instanceless>
-{
-  typedef _Rope_alloc_base<_CharT,_Alloc,
-                            _Alloc_traits<_CharT,_Alloc>::_S_instanceless>
-          _Base;
-  typedef typename _Base::allocator_type allocator_type;
-  _Rope_base(_RopeRep* __t, const allocator_type& __a) : _Base(__t, __a) {}
-  _Rope_base(const allocator_type& __a) : _Base(__a) {}
-};    
-
-#else /* !__STL_USE_STD_ALLOCATORS */
-
-template <class _CharT, class _Alloc> 
-class _Rope_base {
-public:
-  typedef _Rope_RopeRep<_CharT, _Alloc> _RopeRep;
-  typedef _Alloc allocator_type;
-  static allocator_type get_allocator() { return allocator_type(); }
-  _Rope_base(_RopeRep * __t, const allocator_type&) : _M_tree_ptr(__t) {}
-  _Rope_base(const allocator_type&) {}
-
-protected:
-  // The only data member of a rope:
-    _RopeRep* _M_tree_ptr;
-
-# define __ROPE_DEFINE_ALLOC(_Tp, __name) \
-        typedef simple_alloc<_Tp, _Alloc> __name##Alloc; \
-        static _Tp* __name##_allocate(size_t __n) \
-                { return __name##Alloc::allocate(__n); } \
-        static void __name##_deallocate(_Tp *__p, size_t __n) \
-                { __name##Alloc::deallocate(__p, __n); }
-  __ROPE_DEFINE_ALLOCS(_Alloc)
-# undef __ROPE_DEFINE_ALLOC
-};
-
-#endif /* __STL_USE_STD_ALLOCATORS */
-
-
-template <class _CharT, class _Alloc>
-class rope : public _Rope_base<_CharT,_Alloc> {
-    public:
-        typedef _CharT value_type;
-        typedef ptrdiff_t difference_type;
-        typedef size_t size_type;
-        typedef _CharT const_reference;
-        typedef const _CharT* const_pointer;
-        typedef _Rope_iterator<_CharT,_Alloc> iterator;
-        typedef _Rope_const_iterator<_CharT,_Alloc> const_iterator;
-        typedef _Rope_char_ref_proxy<_CharT,_Alloc> reference;
-        typedef _Rope_char_ptr_proxy<_CharT,_Alloc> pointer;
-
-        friend class _Rope_iterator<_CharT,_Alloc>;
-        friend class _Rope_const_iterator<_CharT,_Alloc>;
-        friend struct _Rope_RopeRep<_CharT,_Alloc>;
-        friend class _Rope_iterator_base<_CharT,_Alloc>;
-        friend class _Rope_char_ptr_proxy<_CharT,_Alloc>;
-        friend class _Rope_char_ref_proxy<_CharT,_Alloc>;
-        friend struct _Rope_RopeSubstring<_CharT,_Alloc>;
-
-    protected:
-        typedef _Rope_base<_CharT,_Alloc> _Base;
-        typedef typename _Base::allocator_type allocator_type;
-#       ifdef __STL_USE_NAMESPACES
-          using _Base::_M_tree_ptr;
-#       endif
-        typedef __GC_CONST _CharT* _Cstrptr;
-#       ifdef __STL_SGI_THREADS
-            static _Cstrptr _S_atomic_swap(_Cstrptr* __p, _Cstrptr __q) {
-#               if __mips < 3 || !(defined (_ABIN32) || defined(_ABI64))
-                    return (_Cstrptr) test_and_set((unsigned long*)__p,
-                                                   (unsigned long)__q);
-#               else
-                    return (_Cstrptr) __test_and_set((unsigned long*)__p,
-                                                     (unsigned long)__q);
-#               endif
-            }
-#       elif defined(__STL_WIN32THREADS)
-            static _Cstrptr _S_atomic_swap(_Cstrptr* __p, _Cstrptr __q) {
-                return (_Cstrptr) InterlockedExchange(
-                  (LPLONG)__p, (LONG)__q);
-            }
-#       elif defined(__STL_PTHREADS)
-            // This should be portable, but performance is expected
-            // to be quite awful.  This really needs platform specific
-            // code.
-            static pthread_mutex_t _S_swap_lock;
-            static _Cstrptr _S_atomic_swap(_Cstrptr* __p, _Cstrptr __q) {
-                pthread_mutex_lock(&_S_swap_lock);
-                _Cstrptr __result = *__p;
-                *__p = __q;
-                pthread_mutex_unlock(&_S_swap_lock);
-                return __result;
-            }
-#       else
-            static _Cstrptr _S_atomic_swap(_Cstrptr* __p, _Cstrptr __q) {
-                _Cstrptr __result = *__p;
-                *__p = __q;
-                return __result;
-            }
-#       endif
-
-        static _CharT _S_empty_c_str[1];
-
-        static bool _S_is0(_CharT __c) { return __c == _S_eos((_CharT*)0); }
-        enum { _S_copy_max = 23 };
-                // For strings shorter than _S_copy_max, we copy to
-                // concatenate.
-
-        typedef _Rope_RopeRep<_CharT,_Alloc> _RopeRep;
-        typedef _Rope_RopeConcatenation<_CharT,_Alloc> _RopeConcatenation;
-        typedef _Rope_RopeLeaf<_CharT,_Alloc> _RopeLeaf;
-        typedef _Rope_RopeFunction<_CharT,_Alloc> _RopeFunction;
-        typedef _Rope_RopeSubstring<_CharT,_Alloc> _RopeSubstring;
-
-        // Retrieve a character at the indicated position.
-        static _CharT _S_fetch(_RopeRep* __r, size_type __pos);
-
-#       ifndef __GC
-            // Obtain a pointer to the character at the indicated position.
-            // The pointer can be used to change the character.
-            // If such a pointer cannot be produced, as is frequently the
-            // case, 0 is returned instead.
-            // (Returns nonzero only if all nodes in the path have a refcount
-            // of 1.)
-            static _CharT* _S_fetch_ptr(_RopeRep* __r, size_type __pos);
-#       endif
-
-        static bool _S_apply_to_pieces(
-                                // should be template parameter
-                                _Rope_char_consumer<_CharT>& __c,
-                                const _RopeRep* __r,
-                                size_t __begin, size_t __end);
-                                // begin and end are assumed to be in range.
-
-#       ifndef __GC
-          static void _S_unref(_RopeRep* __t)
-          {
-              _RopeRep::_S_unref(__t);
-          }
-          static void _S_ref(_RopeRep* __t)
-          {
-              _RopeRep::_S_ref(__t);
-          }
-#       else /* __GC */
-          static void _S_unref(_RopeRep*) {}
-          static void _S_ref(_RopeRep*) {}
-#       endif
-
-
-#       ifdef __GC
-            typedef _Rope_RopeRep<_CharT,_Alloc>* _Self_destruct_ptr;
-#       else
-            typedef _Rope_self_destruct_ptr<_CharT,_Alloc> _Self_destruct_ptr;
-#       endif
-
-        // _Result is counted in refcount.
-        static _RopeRep* _S_substring(_RopeRep* __base,
-                                    size_t __start, size_t __endp1);
-
-        static _RopeRep* _S_concat_char_iter(_RopeRep* __r,
-                                          const _CharT* __iter, size_t __slen);
-                // Concatenate rope and char ptr, copying __s.
-                // Should really take an arbitrary iterator.
-                // Result is counted in refcount.
-        static _RopeRep* _S_destr_concat_char_iter(_RopeRep* __r,
-                                          const _CharT* __iter, size_t __slen)
-                // As above, but one reference to __r is about to be
-                // destroyed.  Thus the pieces may be recycled if all
-                // relevent reference counts are 1.
-#           ifdef __GC
-                // We can't really do anything since refcounts are unavailable.
-                { return _S_concat_char_iter(__r, __iter, __slen); }
-#           else
-                ;
-#           endif
-
-        static _RopeRep* _S_concat(_RopeRep* __left, _RopeRep* __right);
-                // General concatenation on _RopeRep.  _Result
-                // has refcount of 1.  Adjusts argument refcounts.
-
-   public:
-        void apply_to_pieces( size_t __begin, size_t __end,
-                              _Rope_char_consumer<_CharT>& __c) const {
-            _S_apply_to_pieces(__c, _M_tree_ptr, __begin, __end);
-        }
-
-
-   protected:
-
-        static size_t _S_rounded_up_size(size_t __n) {
-            return _RopeLeaf::_S_rounded_up_size(__n);
-        }
-
-        static size_t _S_allocated_capacity(size_t __n) {
-            if (_S_is_basic_char_type((_CharT*)0)) {
-                return _S_rounded_up_size(__n) - 1;
-            } else {
-                return _S_rounded_up_size(__n);
-            }
-        }
-                
-        // Allocate and construct a RopeLeaf using the supplied allocator
-        // Takes ownership of s instead of copying.
-        static _RopeLeaf* _S_new_RopeLeaf(__GC_CONST _CharT *__s,
-                                          size_t __size, allocator_type __a)
-        {
-#           ifdef __STL_USE_STD_ALLOCATORS
-              _RopeLeaf* __space = _LAllocator(__a).allocate(1);
-#           else
-              _RopeLeaf* __space = _L_allocate(1);
-#           endif
-            return new(__space) _RopeLeaf(__s, __size, __a);
-        }
-
-        static _RopeConcatenation* _S_new_RopeConcatenation(
-                        _RopeRep* __left, _RopeRep* __right,
-                        allocator_type __a)
-        {
-#           ifdef __STL_USE_STD_ALLOCATORS
-              _RopeConcatenation* __space = _CAllocator(__a).allocate(1);
-#           else
-              _RopeConcatenation* __space = _C_allocate(1);
-#           endif
-            return new(__space) _RopeConcatenation(__left, __right, __a);
-        }
-
-        static _RopeFunction* _S_new_RopeFunction(char_producer<_CharT>* __f,
-                size_t __size, bool __d, allocator_type __a)
-        {
-#           ifdef __STL_USE_STD_ALLOCATORS
-              _RopeFunction* __space = _FAllocator(__a).allocate(1);
-#           else
-              _RopeFunction* __space = _F_allocate(1);
-#           endif
-            return new(__space) _RopeFunction(__f, __size, __d, __a);
-        }
-
-        static _RopeSubstring* _S_new_RopeSubstring(
-                _Rope_RopeRep<_CharT,_Alloc>* __b, size_t __s,
-                size_t __l, allocator_type __a)
-        {
-#           ifdef __STL_USE_STD_ALLOCATORS
-              _RopeSubstring* __space = _SAllocator(__a).allocate(1);
-#           else
-              _RopeSubstring* __space = _S_allocate(1);
-#           endif
-            return new(__space) _RopeSubstring(__b, __s, __l, __a);
-        }
-
-#       ifdef __STL_USE_STD_ALLOCATORS
-          static
-          _RopeLeaf* _S_RopeLeaf_from_unowned_char_ptr(const _CharT *__s,
-                       size_t __size, allocator_type __a)
-#         define __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __size, __a) \
-                _S_RopeLeaf_from_unowned_char_ptr(__s, __size, __a)     
-#       else
-          static
-          _RopeLeaf* _S_RopeLeaf_from_unowned_char_ptr2(const _CharT* __s,
-                                                        size_t __size)
-#         define __STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __size, __a) \
-               _S_RopeLeaf_from_unowned_char_ptr2(__s, __size)
-#       endif
-        {
-            if (0 == __size) return 0;
-#           ifdef __STL_USE_STD_ALLOCATORS
-              _CharT* __buf = __a.allocate(_S_rounded_up_size(__size));
-#           else
-              _CharT* __buf = _Data_allocate(_S_rounded_up_size(__size));
-              allocator_type __a = allocator_type();
-#           endif
-
-            uninitialized_copy_n(__s, __size, __buf);
-            _S_cond_store_eos(__buf[__size]);
-            __STL_TRY {
-              return _S_new_RopeLeaf(__buf, __size, __a);
-            }
-            __STL_UNWIND(_RopeRep::__STL_FREE_STRING(__buf, __size, __a))
-        }
-            
-
-        // Concatenation of nonempty strings.
-        // Always builds a concatenation node.
-        // Rebalances if the result is too deep.
-        // Result has refcount 1.
-        // Does not increment left and right ref counts even though
-        // they are referenced.
-        static _RopeRep*
-        _S_tree_concat(_RopeRep* __left, _RopeRep* __right);
-
-        // Concatenation helper functions
-        static _RopeLeaf*
-        _S_leaf_concat_char_iter(_RopeLeaf* __r,
-                                 const _CharT* __iter, size_t __slen);
-                // Concatenate by copying leaf.
-                // should take an arbitrary iterator
-                // result has refcount 1.
-#       ifndef __GC
-          static _RopeLeaf* _S_destr_leaf_concat_char_iter
-                        (_RopeLeaf* __r, const _CharT* __iter, size_t __slen);
-          // A version that potentially clobbers __r if __r->_M_refcount == 1.
-#       endif
-
-        // A helper function for exponentiating strings.
-        // This uses a nonstandard refcount convention.
-        // The result has refcount 0.
-        struct _Concat_fn
-                : public binary_function<rope<_CharT,_Alloc>,
-                                         rope<_CharT,_Alloc>,
-                                         rope<_CharT,_Alloc> > {
-                rope operator() (const rope& __x, const rope& __y) {
-                    return __x + __y;
-                }
-        };
-
-        // Needed by the call to "power" used to build ropes
-        // consisting of n copies of a character.
-        friend rope identity_element(_Concat_fn) 
-        { return rope<_CharT,_Alloc>(); }
-
-        static size_t _S_char_ptr_len(const _CharT* __s);
-                        // slightly generalized strlen
-
-        rope(_RopeRep* __t, const allocator_type& __a = allocator_type())
-          : _Base(__t,__a) { }
-
-
-        // Copy __r to the _CharT buffer.
-        // Returns __buffer + __r->_M_size.
-        // Assumes that buffer is uninitialized.
-        static _CharT* _S_flatten(_RopeRep* __r, _CharT* __buffer);
-
-        // Again, with explicit starting position and length.
-        // Assumes that buffer is uninitialized.
-        static _CharT* _S_flatten(_RopeRep* __r,
-                                  size_t __start, size_t __len,
-                                  _CharT* __buffer);
-
-        static const unsigned long 
-          _S_min_len[_RopeRep::_S_max_rope_depth + 1];
-
-        static bool _S_is_balanced(_RopeRep* __r)
-                { return (__r->_M_size >= _S_min_len[__r->_M_depth]); }
-
-        static bool _S_is_almost_balanced(_RopeRep* __r)
-                { return (__r->_M_depth == 0 ||
-                          __r->_M_size >= _S_min_len[__r->_M_depth - 1]); }
-
-        static bool _S_is_roughly_balanced(_RopeRep* __r)
-                { return (__r->_M_depth <= 1 ||
-                          __r->_M_size >= _S_min_len[__r->_M_depth - 2]); }
-
-        // Assumes the result is not empty.
-        static _RopeRep* _S_concat_and_set_balanced(_RopeRep* __left,
-                                                     _RopeRep* __right)
-        {
-            _RopeRep* __result = _S_concat(__left, __right);
-            if (_S_is_balanced(__result)) __result->_M_is_balanced = true;
-            return __result;
-        }
-
-        // The basic rebalancing operation.  Logically copies the
-        // rope.  The result has refcount of 1.  The client will
-        // usually decrement the reference count of __r.
-        // The result is within height 2 of balanced by the above
-        // definition.
-        static _RopeRep* _S_balance(_RopeRep* __r);
-
-        // Add all unbalanced subtrees to the forest of balanceed trees.
-        // Used only by balance.
-        static void _S_add_to_forest(_RopeRep*__r, _RopeRep** __forest);
-        
-        // Add __r to forest, assuming __r is already balanced.
-        static void _S_add_leaf_to_forest(_RopeRep* __r, _RopeRep** __forest);
-
-        // Print to stdout, exposing structure
-        static void _S_dump(_RopeRep* __r, int __indent = 0);
-
-        // Return -1, 0, or 1 if __x < __y, __x == __y, or __x > __y resp.
-        static int _S_compare(const _RopeRep* __x, const _RopeRep* __y);
-
-   public:
-        bool empty() const { return 0 == _M_tree_ptr; }
-
-        // Comparison member function.  This is public only for those
-        // clients that need a ternary comparison.  Others
-        // should use the comparison operators below.
-        int compare(const rope& __y) const {
-            return _S_compare(_M_tree_ptr, __y._M_tree_ptr);
-        }
-
-        rope(const _CharT* __s, const allocator_type& __a = allocator_type())
-        : _Base(__STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, _S_char_ptr_len(__s),
-                                                 __a),__a)
-        { }
-
-        rope(const _CharT* __s, size_t __len,
-             const allocator_type& __a = allocator_type())
-        : _Base(__STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __len, __a), __a)
-        { }
-
-        // Should perhaps be templatized with respect to the iterator type
-        // and use Sequence_buffer.  (It should perhaps use sequence_buffer
-        // even now.)
-        rope(const _CharT *__s, const _CharT *__e,
-             const allocator_type& __a = allocator_type())
-        : _Base(__STL_ROPE_FROM_UNOWNED_CHAR_PTR(__s, __e - __s, __a), __a)
-        { }
-
-        rope(const const_iterator& __s, const const_iterator& __e,
-             const allocator_type& __a = allocator_type())
-        : _Base(_S_substring(__s._M_root, __s._M_current_pos,
-                             __e._M_current_pos), __a)
-        { }
-
-        rope(const iterator& __s, const iterator& __e,
-             const allocator_type& __a = allocator_type())
-        : _Base(_S_substring(__s._M_root, __s._M_current_pos,
-                             __e._M_current_pos), __a)
-        { }
-
-        rope(_CharT __c, const allocator_type& __a = allocator_type())
-        : _Base(__a)
-        {
-            _CharT* __buf = _Data_allocate(_S_rounded_up_size(1));
-
-            construct(__buf, __c);
-            __STL_TRY {
-                _M_tree_ptr = _S_new_RopeLeaf(__buf, 1, __a);
-            }
-            __STL_UNWIND(_RopeRep::__STL_FREE_STRING(__buf, 1, __a))
-        }
-
-        rope(size_t __n, _CharT __c,
-             const allocator_type& __a = allocator_type());
-
-        rope(const allocator_type& __a = allocator_type())
-        : _Base(0, __a) {}
-
-        // Construct a rope from a function that can compute its members
-        rope(char_producer<_CharT> *__fn, size_t __len, bool __delete_fn,
-             const allocator_type& __a = allocator_type())
-            : _Base(__a)
-        {
-            _M_tree_ptr = (0 == __len) ?
-               0 : _S_new_RopeFunction(__fn, __len, __delete_fn, __a);
-        }
-
-        rope(const rope& __x, const allocator_type& __a = allocator_type())
-        : _Base(__x._M_tree_ptr, __a)
-        {
-            _S_ref(_M_tree_ptr);
-        }
-
-        ~rope()
-        {
-            _S_unref(_M_tree_ptr);
-        }
-
-        rope& operator=(const rope& __x)
-        {
-            _RopeRep* __old = _M_tree_ptr;
-#           ifdef __STL_USE_STD_ALLOCATORS
-              __stl_assert(get_allocator() == __x.get_allocator());
-#           endif
-            _M_tree_ptr = __x._M_tree_ptr;
-            _S_ref(_M_tree_ptr);
-            _S_unref(__old);
-            return(*this);
-        }
-
-        void push_back(_CharT __x)
-        {
-            _RopeRep* __old = _M_tree_ptr;
-            _M_tree_ptr = _S_concat_char_iter(_M_tree_ptr, &__x, 1);
-            _S_unref(__old);
-        }
-
-        void pop_back()
-        {
-            _RopeRep* __old = _M_tree_ptr;
-            _M_tree_ptr = 
-              _S_substring(_M_tree_ptr, 0, _M_tree_ptr->_M_size - 1);
-            _S_unref(__old);
-        }
-
-        _CharT back() const
-        {
-            return _S_fetch(_M_tree_ptr, _M_tree_ptr->_M_size - 1);
-        }
-
-        void push_front(_CharT __x)
-        {
-            _RopeRep* __old = _M_tree_ptr;
-            _RopeRep* __left =
-              __STL_ROPE_FROM_UNOWNED_CHAR_PTR(&__x, 1, get_allocator());
-            __STL_TRY {
-              _M_tree_ptr = _S_concat(__left, _M_tree_ptr);
-              _S_unref(__old);
-              _S_unref(__left);
-            }
-            __STL_UNWIND(_S_unref(__left))
-        }
-
-        void pop_front()
-        {
-            _RopeRep* __old = _M_tree_ptr;
-            _M_tree_ptr = _S_substring(_M_tree_ptr, 1, _M_tree_ptr->_M_size);
-            _S_unref(__old);
-        }
-
-        _CharT front() const
-        {
-            return _S_fetch(_M_tree_ptr, 0);
-        }
-
-        void balance()
-        {
-            _RopeRep* __old = _M_tree_ptr;
-            _M_tree_ptr = _S_balance(_M_tree_ptr);
-            _S_unref(__old);
-        }
-
-        void copy(_CharT* __buffer) const {
-            destroy(__buffer, __buffer + size());
-            _S_flatten(_M_tree_ptr, __buffer);
-        }
-
-        // This is the copy function from the standard, but
-        // with the arguments reordered to make it consistent with the
-        // rest of the interface.
-        // Note that this guaranteed not to compile if the draft standard
-        // order is assumed.
-        size_type copy(size_type __pos, size_type __n, _CharT* __buffer) const 
-        {
-            size_t __size = size();
-            size_t __len = (__pos + __n > __size? __size - __pos : __n);
-
-            destroy(__buffer, __buffer + __len);
-            _S_flatten(_M_tree_ptr, __pos, __len, __buffer);
-            return __len;
-        }
-
-        // Print to stdout, exposing structure.  May be useful for
-        // performance debugging.
-        void dump() {
-            _S_dump(_M_tree_ptr);
-        }
-
-        // Convert to 0 terminated string in new allocated memory.
-        // Embedded 0s in the input do not terminate the copy.
-        const _CharT* c_str() const;
-
-        // As above, but lso use the flattened representation as the
-        // the new rope representation.
-        const _CharT* replace_with_c_str();
-
-        // Reclaim memory for the c_str generated flattened string.
-        // Intentionally undocumented, since it's hard to say when this
-        // is safe for multiple threads.
-        void delete_c_str () {
-            if (0 == _M_tree_ptr) return;
-            if (_RopeRep::_S_leaf == _M_tree_ptr->_M_tag && 
-                ((_RopeLeaf*)_M_tree_ptr)->_M_data == 
-                      _M_tree_ptr->_M_c_string) {
-                // Representation shared
-                return;
-            }
-#           ifndef __GC
-              _M_tree_ptr->_M_free_c_string();
-#           endif
-            _M_tree_ptr->_M_c_string = 0;
-        }
-
-        _CharT operator[] (size_type __pos) const {
-            return _S_fetch(_M_tree_ptr, __pos);
-        }
-
-        _CharT at(size_type __pos) const {
-           // if (__pos >= size()) throw out_of_range;  // XXX
-           return (*this)[__pos];
-        }
-
-        const_iterator begin() const {
-            return(const_iterator(_M_tree_ptr, 0));
-        }
-
-        // An easy way to get a const iterator from a non-const container.
-        const_iterator const_begin() const {
-            return(const_iterator(_M_tree_ptr, 0));
-        }
-
-        const_iterator end() const {
-            return(const_iterator(_M_tree_ptr, size()));
-        }
-
-        const_iterator const_end() const {
-            return(const_iterator(_M_tree_ptr, size()));
-        }
-
-        size_type size() const { 
-            return(0 == _M_tree_ptr? 0 : _M_tree_ptr->_M_size);
-        }
-
-        size_type length() const {
-            return size();
-        }
-
-        size_type max_size() const {
-            return _S_min_len[_RopeRep::_S_max_rope_depth-1] - 1;
-            //  Guarantees that the result can be sufficirntly
-            //  balanced.  Longer ropes will probably still work,
-            //  but it's harder to make guarantees.
-        }
-
-#     ifdef __STL_CLASS_PARTIAL_SPECIALIZATION
-        typedef reverse_iterator<const_iterator> const_reverse_iterator;
-#     else /* __STL_CLASS_PARTIAL_SPECIALIZATION */
-        typedef reverse_iterator<const_iterator, value_type, const_reference,
-                                 difference_type>  const_reverse_iterator;
-#     endif /* __STL_CLASS_PARTIAL_SPECIALIZATION */ 
-
-        const_reverse_iterator rbegin() const {
-            return const_reverse_iterator(end());
-        }
-
-        const_reverse_iterator const_rbegin() const {
-            return const_reverse_iterator(end());
-        }
-
-        const_reverse_iterator rend() const {
-            return const_reverse_iterator(begin());
-        }
-
-        const_reverse_iterator const_rend() const {
-            return const_reverse_iterator(begin());
-        }
-
-        friend rope<_CharT,_Alloc>
-        operator+ __STL_NULL_TMPL_ARGS (const rope<_CharT,_Alloc>& __left,
-                                        const rope<_CharT,_Alloc>& __right);
-        
-        friend rope<_CharT,_Alloc>
-        operator+ __STL_NULL_TMPL_ARGS (const rope<_CharT,_Alloc>& __left,
-                                        const _CharT* __right);
-        
-        friend rope<_CharT,_Alloc>
-        operator+ __STL_NULL_TMPL_ARGS (const rope<_CharT,_Alloc>& __left,
-                                        _CharT __right);
-        
-        // The symmetric cases are intentionally omitted, since they're presumed
-        // to be less common, and we don't handle them as well.
-
-        // The following should really be templatized.
-        // The first argument should be an input iterator or
-        // forward iterator with value_type _CharT.
-        rope& append(const _CharT* __iter, size_t __n) {
-            _RopeRep* __result = 
-              _S_destr_concat_char_iter(_M_tree_ptr, __iter, __n);
-            _S_unref(_M_tree_ptr);
-            _M_tree_ptr = __result;
-            return *this;
-        }
-
-        rope& append(const _CharT* __c_string) {
-            size_t __len = _S_char_ptr_len(__c_string);
-            append(__c_string, __len);
-            return(*this);
-        }
-
-        rope& append(const _CharT* __s, const _CharT* __e) {
-            _RopeRep* __result =
-                _S_destr_concat_char_iter(_M_tree_ptr, __s, __e - __s);
-            _S_unref(_M_tree_ptr);
-            _M_tree_ptr = __result;
-            return *this;
-        }
-
-        rope& append(const_iterator __s, const_iterator __e) {
-            __stl_assert(__s._M_root == __e._M_root);
-#           ifdef __STL_USE_STD_ALLOCATORS
-                __stl_assert(get_allocator() == __s._M_root->get_allocator());
-#           endif
-            _Self_destruct_ptr __appendee(_S_substring(
-              __s._M_root, __s._M_current_pos, __e._M_current_pos));
-            _RopeRep* __result = 
-              _S_concat(_M_tree_ptr, (_RopeRep*)__appendee);
-            _S_unref(_M_tree_ptr);
-            _M_tree_ptr = __result;
-            return *this;
-        }
-
-        rope& append(_CharT __c) {
-            _RopeRep* __result = 
-              _S_destr_concat_char_iter(_M_tree_ptr, &__c, 1);
-            _S_unref(_M_tree_ptr);
-            _M_tree_ptr = __result;
-            return *this;
-        }
-
-        rope& append() { return append(_CharT()); }  // XXX why?
-
-        rope& append(const rope& __y) {
-#           ifdef __STL_USE_STD_ALLOCATORS
-              __stl_assert(__y.get_allocator() == get_allocator());
-#           endif
-            _RopeRep* __result = _S_concat(_M_tree_ptr, __y._M_tree_ptr);
-            _S_unref(_M_tree_ptr);
-            _M_tree_ptr = __result;
-            return *this;
-        }
-
-        rope& append(size_t __n, _CharT __c) {
-            rope<_CharT,_Alloc> __last(__n, __c);
-            return append(__last);
-        }
-
-        void swap(rope& __b) {
-#           ifdef __STL_USE_STD_ALLOCATORS
-                __stl_assert(get_allocator() == __b.get_allocator());
-#           endif
-            _RopeRep* __tmp = _M_tree_ptr;
-            _M_tree_ptr = __b._M_tree_ptr;
-            __b._M_tree_ptr = __tmp;
-        }
-
-
-    protected:
-        // Result is included in refcount.
-        static _RopeRep* replace(_RopeRep* __old, size_t __pos1,
-                                  size_t __pos2, _RopeRep* __r) {
-            if (0 == __old) { _S_ref(__r); return __r; }
-            _Self_destruct_ptr __left(
-              _S_substring(__old, 0, __pos1));
-            _Self_destruct_ptr __right(
-              _S_substring(__old, __pos2, __old->_M_size));
-            _RopeRep* __result;
-
-#           ifdef __STL_USE_STD_ALLOCATORS
-                __stl_assert(__old->get_allocator() == __r->get_allocator());
-#           endif
-            if (0 == __r) {
-                __result = _S_concat(__left, __right);
-            } else {
-                _Self_destruct_ptr __left_result(_S_concat(__left, __r));
-                __result = _S_concat(__left_result, __right);
-            }
-            return __result;
-        }
-
-    public:
-        void insert(size_t __p, const rope& __r) {
-            _RopeRep* __result = 
-              replace(_M_tree_ptr, __p, __p, __r._M_tree_ptr);
-#           ifdef __STL_USE_STD_ALLOCATORS
-                __stl_assert(get_allocator() == __r.get_allocator());
-#           endif
-            _S_unref(_M_tree_ptr);
-            _M_tree_ptr = __result;
-        }
-
-        void insert(size_t __p, size_t __n, _CharT __c) {
-            rope<_CharT,_Alloc> __r(__n,__c);
-            insert(__p, __r);
-        }
-
-        void insert(size_t __p, const _CharT* __i, size_t __n) {
-            _Self_destruct_ptr __left(_S_substring(_M_tree_ptr, 0, __p));
-            _Self_destruct_ptr __right(_S_substring(_M_tree_ptr, __p, size()));
-            _Self_destruct_ptr __left_result(
-              _S_concat_char_iter(__left, __i, __n));
-            _RopeRep* __result = _S_concat(__left_result, __right);
-            _S_unref(_M_tree_ptr);
-            _M_tree_ptr = __result;
-        }
-
-        void insert(size_t __p, const _CharT* __c_string) {
-            insert(__p, __c_string, _S_char_ptr_len(__c_string));
-        }
-
-        void insert(size_t __p, _CharT __c) {
-            insert(__p, &__c, 1);
-        }
-
-        void insert(size_t __p) {
-            _CharT __c = _CharT();
-            insert(__p, &__c, 1);
-        }
-
-        void insert(size_t __p, const _CharT* __i, const _CharT* __j) {
-            rope __r(__i, __j);
-            insert(__p, __r);
-        }
-
-        void insert(size_t __p, const const_iterator& __i,
-                              const const_iterator& __j) {
-            rope __r(__i, __j);
-            insert(__p, __r);
-        }
-
-        void insert(size_t __p, const iterator& __i,
-                              const iterator& __j) {
-            rope __r(__i, __j);
-            insert(__p, __r);
-        }
-
-        // (position, length) versions of replace operations:
-
-        void replace(size_t __p, size_t __n, const rope& __r) {
-            _RopeRep* __result = 
-              replace(_M_tree_ptr, __p, __p + __n, __r._M_tree_ptr);
-            _S_unref(_M_tree_ptr);
-            _M_tree_ptr = __result;
-        }
-
-        void replace(size_t __p, size_t __n, 
-                     const _CharT* __i, size_t __i_len) {
-            rope __r(__i, __i_len);
-            replace(__p, __n, __r);
-        }
-
-        void replace(size_t __p, size_t __n, _CharT __c) {
-            rope __r(__c);
-            replace(__p, __n, __r);
-        }
-
-        void replace(size_t __p, size_t __n, const _CharT* __c_string) {
-            rope __r(__c_string);
-            replace(__p, __n, __r);
-        }
-
-        void replace(size_t __p, size_t __n, 
-                     const _CharT* __i, const _CharT* __j) {
-            rope __r(__i, __j);
-            replace(__p, __n, __r);
-        }
-
-        void replace(size_t __p, size_t __n,
-                     const const_iterator& __i, const const_iterator& __j) {
-            rope __r(__i, __j);
-            replace(__p, __n, __r);
-        }
-
-        void replace(size_t __p, size_t __n,
-                     const iterator& __i, const iterator& __j) {
-            rope __r(__i, __j);
-            replace(__p, __n, __r);
-        }
-
-        // Single character variants:
-        void replace(size_t __p, _CharT __c) {
-            iterator __i(this, __p);
-            *__i = __c;
-        }
-
-        void replace(size_t __p, const rope& __r) {
-            replace(__p, 1, __r);
-        }
-
-        void replace(size_t __p, const _CharT* __i, size_t __i_len) {
-            replace(__p, 1, __i, __i_len);
-        }
-
-        void replace(size_t __p, const _CharT* __c_string) {
-            replace(__p, 1, __c_string);
-        }
-
-        void replace(size_t __p, const _CharT* __i, const _CharT* __j) {
-            replace(__p, 1, __i, __j);
-        }
-
-        void replace(size_t __p, const const_iterator& __i,
-                               const const_iterator& __j) {
-            replace(__p, 1, __i, __j);
-        }
-
-        void replace(size_t __p, const iterator& __i,
-                               const iterator& __j) {
-            replace(__p, 1, __i, __j);
-        }
-
-        // Erase, (position, size) variant.
-        void erase(size_t __p, size_t __n) {
-            _RopeRep* __result = replace(_M_tree_ptr, __p, __p + __n, 0);
-            _S_unref(_M_tree_ptr);
-            _M_tree_ptr = __result;
-        }
-
-        // Erase, single character
-        void erase(size_t __p) {
-            erase(__p, __p + 1);
-        }
-
-        // Insert, iterator variants.  
-        iterator insert(const iterator& __p, const rope& __r)
-                { insert(__p.index(), __r); return __p; }
-        iterator insert(const iterator& __p, size_t __n, _CharT __c)
-                { insert(__p.index(), __n, __c); return __p; }
-        iterator insert(const iterator& __p, _CharT __c) 
-                { insert(__p.index(), __c); return __p; }
-        iterator insert(const iterator& __p ) 
-                { insert(__p.index()); return __p; }
-        iterator insert(const iterator& __p, const _CharT* c_string) 
-                { insert(__p.index(), c_string); return __p; }
-        iterator insert(const iterator& __p, const _CharT* __i, size_t __n)
-                { insert(__p.index(), __i, __n); return __p; }
-        iterator insert(const iterator& __p, const _CharT* __i, 
-                        const _CharT* __j)
-                { insert(__p.index(), __i, __j);  return __p; }
-        iterator insert(const iterator& __p,
-                        const const_iterator& __i, const const_iterator& __j)
-                { insert(__p.index(), __i, __j); return __p; }
-        iterator insert(const iterator& __p,
-                        const iterator& __i, const iterator& __j)
-                { insert(__p.index(), __i, __j); return __p; }
-
-        // Replace, range variants.
-        void replace(const iterator& __p, const iterator& __q,
-                     const rope& __r)
-                { replace(__p.index(), __q.index() - __p.index(), __r); }
-        void replace(const iterator& __p, const iterator& __q, _CharT __c)
-                { replace(__p.index(), __q.index() - __p.index(), __c); }
-        void replace(const iterator& __p, const iterator& __q,
-                     const _CharT* __c_string)
-                { replace(__p.index(), __q.index() - __p.index(), __c_string); }
-        void replace(const iterator& __p, const iterator& __q,
-                     const _CharT* __i, size_t __n)
-                { replace(__p.index(), __q.index() - __p.index(), __i, __n); }
-        void replace(const iterator& __p, const iterator& __q,
-                     const _CharT* __i, const _CharT* __j)
-                { replace(__p.index(), __q.index() - __p.index(), __i, __j); }
-        void replace(const iterator& __p, const iterator& __q,
-                     const const_iterator& __i, const const_iterator& __j)
-                { replace(__p.index(), __q.index() - __p.index(), __i, __j); }
-        void replace(const iterator& __p, const iterator& __q,
-                     const iterator& __i, const iterator& __j)
-                { replace(__p.index(), __q.index() - __p.index(), __i, __j); }
-
-        // Replace, iterator variants.
-        void replace(const iterator& __p, const rope& __r)
-                { replace(__p.index(), __r); }
-        void replace(const iterator& __p, _CharT __c)
-                { replace(__p.index(), __c); }
-        void replace(const iterator& __p, const _CharT* __c_string)
-                { replace(__p.index(), __c_string); }
-        void replace(const iterator& __p, const _CharT* __i, size_t __n)
-                { replace(__p.index(), __i, __n); }
-        void replace(const iterator& __p, const _CharT* __i, const _CharT* __j)
-                { replace(__p.index(), __i, __j); }
-        void replace(const iterator& __p, const_iterator __i, 
-                     const_iterator __j)
-                { replace(__p.index(), __i, __j); }
-        void replace(const iterator& __p, iterator __i, iterator __j)
-                { replace(__p.index(), __i, __j); }
-
-        // Iterator and range variants of erase
-        iterator erase(const iterator& __p, const iterator& __q) {
-            size_t __p_index = __p.index();
-            erase(__p_index, __q.index() - __p_index);
-            return iterator(this, __p_index);
-        }
-        iterator erase(const iterator& __p) {
-            size_t __p_index = __p.index();
-            erase(__p_index, 1);
-            return iterator(this, __p_index);
-        }
-
-        rope substr(size_t __start, size_t __len = 1) const {
-            return rope<_CharT,_Alloc>(
-                        _S_substring(_M_tree_ptr, __start, __start + __len));
-        }
-
-        rope substr(iterator __start, iterator __end) const {
-            return rope<_CharT,_Alloc>(
-                _S_substring(_M_tree_ptr, __start.index(), __end.index()));
-        }
-        
-        rope substr(iterator __start) const {
-            size_t __pos = __start.index();
-            return rope<_CharT,_Alloc>(
-                        _S_substring(_M_tree_ptr, __pos, __pos + 1));
-        }
-        
-        rope substr(const_iterator __start, const_iterator __end) const {
-            // This might eventually take advantage of the cache in the
-            // iterator.
-            return rope<_CharT,_Alloc>(
-              _S_substring(_M_tree_ptr, __start.index(), __end.index()));
-        }
-
-        rope<_CharT,_Alloc> substr(const_iterator __start) {
-            size_t __pos = __start.index();
-            return rope<_CharT,_Alloc>(
-              _S_substring(_M_tree_ptr, __pos, __pos + 1));
-        }
-
-        static const size_type npos;
-
-        size_type find(_CharT __c, size_type __pos = 0) const;
-        size_type find(_CharT* __s, size_type __pos = 0) const {
-            size_type __result_pos;
-            const_iterator __result = search(const_begin() + __pos, const_end(),
-                                           __s, __s + _S_char_ptr_len(__s));
-            __result_pos = __result.index();
-#           ifndef __STL_OLD_ROPE_SEMANTICS
-                if (__result_pos == size()) __result_pos = npos;
-#           endif
-            return __result_pos;
-        }
-
-        iterator mutable_begin() {
-            return(iterator(this, 0));
-        }
-
-        iterator mutable_end() {
-            return(iterator(this, size()));
-        }
-
-#     ifdef __STL_CLASS_PARTIAL_SPECIALIZATION
-        typedef reverse_iterator<iterator> reverse_iterator;
-#     else /* __STL_CLASS_PARTIAL_SPECIALIZATION */
-        typedef reverse_iterator<iterator, value_type, reference,
-                                 difference_type>  reverse_iterator;
-#     endif /* __STL_CLASS_PARTIAL_SPECIALIZATION */ 
-
-        reverse_iterator mutable_rbegin() {
-            return reverse_iterator(mutable_end());
-        }
-
-        reverse_iterator mutable_rend() {
-            return reverse_iterator(mutable_begin());
-        }
-
-        reference mutable_reference_at(size_type __pos) {
-            return reference(this, __pos);
-        }
-
-#       ifdef __STD_STUFF
-            reference operator[] (size_type __pos) {
-                return _char_ref_proxy(this, __pos);
-            }
-
-            reference at(size_type __pos) {
-                // if (__pos >= size()) throw out_of_range;  // XXX
-                return (*this)[__pos];
-            }
-
-            void resize(size_type __n, _CharT __c) {}
-            void resize(size_type __n) {}
-            void reserve(size_type __res_arg = 0) {}
-            size_type capacity() const {
-                return max_size();
-            }
-
-          // Stuff below this line is dangerous because it's error prone.
-          // I would really like to get rid of it.
-            // copy function with funny arg ordering.
-              size_type copy(_CharT* __buffer, size_type __n, 
-                             size_type __pos = 0) const {
-                return copy(__pos, __n, __buffer);
-              }
-
-            iterator end() { return mutable_end(); }
-
-            iterator begin() { return mutable_begin(); }
-
-            reverse_iterator rend() { return mutable_rend(); }
-
-            reverse_iterator rbegin() { return mutable_rbegin(); }
-
-#       else
-
-            const_iterator end() { return const_end(); }
-
-            const_iterator begin() { return const_begin(); }
-
-            const_reverse_iterator rend() { return const_rend(); }
-  
-            const_reverse_iterator rbegin() { return const_rbegin(); }
-
-#       endif
-        
-};
-
-template <class _CharT, class _Alloc>
-const rope<_CharT, _Alloc>::size_type rope<_CharT, _Alloc>::npos =
-			(size_type)(-1);
-
-template <class _CharT, class _Alloc>
-inline bool operator== (const _Rope_const_iterator<_CharT,_Alloc>& __x,
-                        const _Rope_const_iterator<_CharT,_Alloc>& __y) {
-  return (__x._M_current_pos == __y._M_current_pos && 
-          __x._M_root == __y._M_root);
-}
-
-template <class _CharT, class _Alloc>
-inline bool operator< (const _Rope_const_iterator<_CharT,_Alloc>& __x,
-                       const _Rope_const_iterator<_CharT,_Alloc>& __y) {
-  return (__x._M_current_pos < __y._M_current_pos);
-}
-
-template <class _CharT, class _Alloc>
-inline ptrdiff_t operator-(const _Rope_const_iterator<_CharT,_Alloc>& __x,
-                           const _Rope_const_iterator<_CharT,_Alloc>& __y) {
-  return (ptrdiff_t)__x._M_current_pos - (ptrdiff_t)__y._M_current_pos;
-}
-
-template <class _CharT, class _Alloc>
-inline _Rope_const_iterator<_CharT,_Alloc>
-operator-(const _Rope_const_iterator<_CharT,_Alloc>& __x, ptrdiff_t __n) {
-  return _Rope_const_iterator<_CharT,_Alloc>(
-            __x._M_root, __x._M_current_pos - __n);
-}
-
-template <class _CharT, class _Alloc>
-inline _Rope_const_iterator<_CharT,_Alloc>
-operator+(const _Rope_const_iterator<_CharT,_Alloc>& __x, ptrdiff_t __n) {
-  return _Rope_const_iterator<_CharT,_Alloc>(
-           __x._M_root, __x._M_current_pos + __n);
-}
-
-template <class _CharT, class _Alloc>
-inline _Rope_const_iterator<_CharT,_Alloc>
-operator+(ptrdiff_t __n, const _Rope_const_iterator<_CharT,_Alloc>& __x) {
-  return _Rope_const_iterator<_CharT,_Alloc>(
-           __x._M_root, __x._M_current_pos + __n);
-}
-
-template <class _CharT, class _Alloc>
-inline bool operator== (const _Rope_iterator<_CharT,_Alloc>& __x,
-                        const _Rope_iterator<_CharT,_Alloc>& __y) {
-  return (__x._M_current_pos == __y._M_current_pos && 
-          __x._M_root_rope == __y._M_root_rope);
-}
-
-template <class _CharT, class _Alloc>
-inline bool operator< (const _Rope_iterator<_CharT,_Alloc>& __x,
-                       const _Rope_iterator<_CharT,_Alloc>& __y) {
-  return (__x._M_current_pos < __y._M_current_pos);
-}
-
-template <class _CharT, class _Alloc>
-inline ptrdiff_t operator-(const _Rope_iterator<_CharT,_Alloc>& __x,
-                           const _Rope_iterator<_CharT,_Alloc>& __y) {
-  return (ptrdiff_t)__x._M_current_pos - (ptrdiff_t)__y._M_current_pos;
-}
-
-template <class _CharT, class _Alloc>
-inline _Rope_iterator<_CharT,_Alloc>
-operator-(const _Rope_iterator<_CharT,_Alloc>& __x,
-          ptrdiff_t __n) {
-  return _Rope_iterator<_CharT,_Alloc>(
-    __x._M_root_rope, __x._M_current_pos - __n);
-}
-
-template <class _CharT, class _Alloc>
-inline _Rope_iterator<_CharT,_Alloc>
-operator+(const _Rope_iterator<_CharT,_Alloc>& __x,
-          ptrdiff_t __n) {
-  return _Rope_iterator<_CharT,_Alloc>(
-    __x._M_root_rope, __x._M_current_pos + __n);
-}
-
-template <class _CharT, class _Alloc>
-inline _Rope_iterator<_CharT,_Alloc>
-operator+(ptrdiff_t __n, const _Rope_iterator<_CharT,_Alloc>& __x) {
-  return _Rope_iterator<_CharT,_Alloc>(
-    __x._M_root_rope, __x._M_current_pos + __n);
-}
-
-template <class _CharT, class _Alloc>
-inline
-rope<_CharT,_Alloc>
-operator+ (const rope<_CharT,_Alloc>& __left,
-           const rope<_CharT,_Alloc>& __right)
-{
-#   ifdef __STL_USE_STD_ALLOCATORS
-        __stl_assert(__left.get_allocator() == __right.get_allocator());
-#   endif
-    return rope<_CharT,_Alloc>(
-      rope<_CharT,_Alloc>::_S_concat(__left._M_tree_ptr, __right._M_tree_ptr));
-    // Inlining this should make it possible to keep __left and
-    // __right in registers.
-}
-
-template <class _CharT, class _Alloc>
-inline
-rope<_CharT,_Alloc>&
-operator+= (rope<_CharT,_Alloc>& __left, 
-      const rope<_CharT,_Alloc>& __right)
-{
-    __left.append(__right);
-    return __left;
-}
-
-template <class _CharT, class _Alloc>
-inline
-rope<_CharT,_Alloc>
-operator+ (const rope<_CharT,_Alloc>& __left,
-           const _CharT* __right) {
-    size_t __rlen = rope<_CharT,_Alloc>::_S_char_ptr_len(__right);
-    return rope<_CharT,_Alloc>(
-      rope<_CharT,_Alloc>::_S_concat_char_iter(
-        __left._M_tree_ptr, __right, __rlen)); 
-}
-
-template <class _CharT, class _Alloc>
-inline
-rope<_CharT,_Alloc>&
-operator+= (rope<_CharT,_Alloc>& __left,
-            const _CharT* __right) {
-    __left.append(__right);
-    return __left;
-}
-
-template <class _CharT, class _Alloc>
-inline
-rope<_CharT,_Alloc>
-operator+ (const rope<_CharT,_Alloc>& __left, _CharT __right) {
-    return rope<_CharT,_Alloc>(
-      rope<_CharT,_Alloc>::_S_concat_char_iter(
-        __left._M_tree_ptr, &__right, 1));
-}
-
-template <class _CharT, class _Alloc>
-inline
-rope<_CharT,_Alloc>&
-operator+= (rope<_CharT,_Alloc>& __left, _CharT __right) {
-    __left.append(__right);
-    return __left;
-}
-
-template <class _CharT, class _Alloc>
-bool
-operator< (const rope<_CharT,_Alloc>& __left, 
-           const rope<_CharT,_Alloc>& __right) {
-    return __left.compare(__right) < 0;
-}
-        
-template <class _CharT, class _Alloc>
-bool
-operator== (const rope<_CharT,_Alloc>& __left, 
-            const rope<_CharT,_Alloc>& __right) {
-    return __left.compare(__right) == 0;
-}
-
-template <class _CharT, class _Alloc>
-inline bool operator== (const _Rope_char_ptr_proxy<_CharT,_Alloc>& __x,
-                        const _Rope_char_ptr_proxy<_CharT,_Alloc>& __y) {
-        return (__x._M_pos == __y._M_pos && __x._M_root == __y._M_root);
-}
-
-template<class _CharT, class _Alloc>
-ostream& operator<< (ostream& __o, const rope<_CharT,_Alloc>& __r);        
-        
-typedef rope<char> crope;
-typedef rope<wchar_t> wrope;
-
-inline crope::reference __mutable_reference_at(crope& __c, size_t __i)
-{
-    return __c.mutable_reference_at(__i);
-}
-
-inline wrope::reference __mutable_reference_at(wrope& __c, size_t __i)
-{
-    return __c.mutable_reference_at(__i);
-}
-
-#ifdef __STL_FUNCTION_TMPL_PARTIAL_ORDER
-
-template <class _CharT, class _Alloc>
-inline void swap(rope<_CharT,_Alloc>& __x, rope<_CharT,_Alloc>& __y) {
-  __x.swap(__y);
-}
-
-#else
-
-inline void swap(crope __x, crope __y) { __x.swap(__y); }
-inline void swap(wrope __x, wrope __y) { __x.swap(__y); }
-
-#endif /* __STL_FUNCTION_TMPL_PARTIAL_ORDER */
-
-// Hash functions should probably be revisited later:
-__STL_TEMPLATE_NULL struct hash<crope>
-{
-  size_t operator()(const crope& __str) const
-  {
-    size_t __size = __str.size();
-
-    if (0 == __size) return 0;
-    return 13*__str[0] + 5*__str[__size - 1] + __size;
-  }
-};
-
-
-__STL_TEMPLATE_NULL struct hash<wrope>
-{
-  size_t operator()(const wrope& __str) const
-  {
-    size_t __size = __str.size();
-
-    if (0 == __size) return 0;
-    return 13*__str[0] + 5*__str[__size - 1] + __size;
-  }
-};
-
-#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
-#pragma reset woff 1174
-#endif
-
-__STL_END_NAMESPACE
-
-# include <ropeimpl.h>
-
-# endif /* __SGI_STL_INTERNAL_ROPE_H */
-
-// Local Variables:
-// mode:C++
-// End: