Delete old versions of GCC.

Change-Id: I710f125d905290e1024cbd67f48299861790c66c

1 files changed, 0 insertions, 2594 deletions

diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/vstring.h b/gcc-4.4.3/libstdc++-v3/include/ext/vstring.h
deleted file mode 100644
index a259d23fa..000000000
--- a/gcc-4.4.3/libstdc++-v3/include/ext/vstring.h
+++ /dev/null
@@ -1,2594 +0,0 @@
-// Versatile string -*- C++ -*-
-
-// Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-//
-// This file is part of the GNU ISO C++ Library.  This library is free
-// software; you can redistribute it and/or modify it under the
-// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 3, or (at your option)
-// any later version.
-
-// This library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// Under Section 7 of GPL version 3, you are granted additional
-// permissions described in the GCC Runtime Library Exception, version
-// 3.1, as published by the Free Software Foundation.
-
-// You should have received a copy of the GNU General Public License and
-// a copy of the GCC Runtime Library Exception along with this program;
-// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-// <http://www.gnu.org/licenses/>.
-
-/** @file ext/vstring.h
- *  This file is a GNU extension to the Standard C++ Library.
- */
-
-#ifndef _VSTRING_H
-#define _VSTRING_H 1
-
-#pragma GCC system_header
-
-#include <initializer_list>
-#include <ext/vstring_util.h>
-#include <ext/rc_string_base.h>
-#include <ext/sso_string_base.h>
-
-#if __google_stl_debug_string && !defined(_GLIBCXX_DEBUG)
-# undef _GLIBCXX_DEBUG_ASSERT
-# undef _GLIBCXX_DEBUG_PEDASSERT
-// Perform additional checks (but only in this file).
-# define _GLIBCXX_DEBUG_ASSERT(_Condition)				\
-  if (! (_Condition)) {							\
-    char buf[512];							\
-    __builtin_snprintf(buf, sizeof(buf),				\
-		       "%s:%d: %s: Assertion '%s' failed.\n",		\
-		       __FILE__, __LINE__, __func__, # _Condition);	\
-    std::__throw_runtime_error(buf);					\
-  }
-# define _GLIBCXX_DEBUG_PEDASSERT(_Condition) _GLIBCXX_DEBUG_ASSERT(_Condition)
-#endif
-
-_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
-
-  /**
-   *  @class __versa_string vstring.h
-   *  @brief  Managing sequences of characters and character-like objects.
-   */
-
-  // Template class __versa_string
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    class __versa_string
-    : private _Base<_CharT, _Traits, _Alloc>
-    {
-      typedef _Base<_CharT, _Traits, _Alloc>                __vstring_base;      
-      typedef typename __vstring_base::_CharT_alloc_type    _CharT_alloc_type;
-
-      // Types:
-    public:
-      typedef _Traits					    traits_type;
-      typedef typename _Traits::char_type		    value_type;
-      typedef _Alloc					    allocator_type;
-      typedef typename _CharT_alloc_type::size_type	    size_type;
-      typedef typename _CharT_alloc_type::difference_type   difference_type;
-      typedef typename _CharT_alloc_type::reference	    reference;
-      typedef typename _CharT_alloc_type::const_reference   const_reference;
-      typedef typename _CharT_alloc_type::pointer	    pointer;
-      typedef typename _CharT_alloc_type::const_pointer	    const_pointer;
-      typedef __gnu_cxx::__normal_iterator<pointer, __versa_string>  iterator;
-      typedef __gnu_cxx::__normal_iterator<const_pointer, __versa_string>
-                                                            const_iterator;
-      typedef std::reverse_iterator<const_iterator>	const_reverse_iterator;
-      typedef std::reverse_iterator<iterator>		    reverse_iterator;
-
-      // Data Member (public):
-      ///  Value returned by various member functions when they fail.
-      static const size_type	npos = static_cast<size_type>(-1);
-
-    private:
-      size_type
-      _M_check(size_type __pos, const char* __s) const
-      {
-	if (__pos > this->size())
-	  std::__throw_out_of_range(__N(__s));
-	return __pos;
-      }
-
-      void
-      _M_check_length(size_type __n1, size_type __n2, const char* __s) const
-      {
-	if (this->max_size() - (this->size() - __n1) < __n2)
-	  std::__throw_length_error(__N(__s));
-      }
-
-      // NB: _M_limit doesn't check for a bad __pos value.
-      size_type
-      _M_limit(size_type __pos, size_type __off) const
-      {
-	const bool __testoff =  __off < this->size() - __pos;
-	return __testoff ? __off : this->size() - __pos;
-      }
-
-      // True if _Rep and source do not overlap.
-      bool
-      _M_disjunct(const _CharT* __s) const
-      {
-	return (std::less<const _CharT*>()(__s, this->_M_data())
-		|| std::less<const _CharT*>()(this->_M_data()
-					      + this->size(), __s));
-      }
-
-      // For the internal use we have functions similar to `begin'/`end'
-      // but they do not call _M_leak.
-      iterator
-      _M_ibegin() const
-      { return iterator(this->_M_data()); }
-
-      iterator
-      _M_iend() const
-      { return iterator(this->_M_data() + this->_M_length()); }
-
-    public:
-      // Construct/copy/destroy:
-      // NB: We overload ctors in some cases instead of using default
-      // arguments, per 17.4.4.4 para. 2 item 2.
-
-      /**
-       *  @brief  Default constructor creates an empty string.
-       */
-      __versa_string()
-      : __vstring_base() { }
-      
-      /**
-       *  @brief  Construct an empty string using allocator @a a.
-       */
-      explicit
-      __versa_string(const _Alloc& __a)
-      : __vstring_base(__a) { }
-
-      // NB: per LWG issue 42, semantics different from IS:
-      /**
-       *  @brief  Construct string with copy of value of @a str.
-       *  @param  __str  Source string.
-       */
-      __versa_string(const __versa_string& __str)
-      : __vstring_base(__str) { }
-
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      /**
-       *  @brief  String move constructor.
-       *  @param  __str  Source string.
-       *
-       *  The newly-constructed %string contains the exact contents of
-       *  @a str.  The contents of @a str are a valid, but unspecified
-       *  string.
-       */
-      __versa_string(__versa_string&& __str)
-      : __vstring_base(std::move(__str)) { }
-
-      /**
-       *  @brief  Construct string from an initializer list.
-       *  @param  __l  std::initializer_list of characters.
-       *  @param  __a  Allocator to use (default is default allocator).
-       */
-      __versa_string(std::initializer_list<_CharT> __l,
-		     const _Alloc& __a = _Alloc())
-      : __vstring_base(__l.begin(), __l.end(), __a) { }
-#endif
-
-      /**
-       *  @brief  Construct string as copy of a substring.
-       *  @param  __str  Source string.
-       *  @param  __pos  Index of first character to copy from.
-       *  @param  __n  Number of characters to copy (default remainder).
-       */
-      __versa_string(const __versa_string& __str, size_type __pos,
-		     size_type __n = npos)
-      : __vstring_base(__str._M_data()
-		       + __str._M_check(__pos,
-					"__versa_string::__versa_string"),
-		       __str._M_data() + __str._M_limit(__pos, __n)
-		       + __pos, _Alloc()) { }
-
-      /**
-       *  @brief  Construct string as copy of a substring.
-       *  @param  __str  Source string.
-       *  @param  __pos  Index of first character to copy from.
-       *  @param  __n  Number of characters to copy.
-       *  @param  __a  Allocator to use.
-       */
-      __versa_string(const __versa_string& __str, size_type __pos,
-		     size_type __n, const _Alloc& __a)
-      : __vstring_base(__str._M_data()
-		       + __str._M_check(__pos,
-					"__versa_string::__versa_string"),
-		       __str._M_data() + __str._M_limit(__pos, __n)
-		       + __pos, __a) { }
-
-      /**
-       *  @brief  Construct string initialized by a character array.
-       *  @param  __s  Source character array.
-       *  @param  __n  Number of characters to copy.
-       *  @param  __a  Allocator to use (default is default allocator).
-       *
-       *  NB: @a __s must have at least @a __n characters, '\\0' has no special
-       *  meaning.
-       */
-      __versa_string(const _CharT* __s, size_type __n,
-		     const _Alloc& __a = _Alloc())
-      : __vstring_base(__s, __s + __n, __a) { }
-
-      /**
-       *  @brief  Construct string as copy of a C string.
-       *  @param  __s  Source C string.
-       *  @param  __a  Allocator to use (default is default allocator).
-       */
-      __versa_string(const _CharT* __s, const _Alloc& __a = _Alloc())
-      : __vstring_base(__s, __s ? __s + traits_type::length(__s) :
-		       __s + npos, __a) { }
-
-      /**
-       *  @brief  Construct string as multiple characters.
-       *  @param  __n  Number of characters.
-       *  @param  __c  Character to use.
-       *  @param  __a  Allocator to use (default is default allocator).
-       */
-      __versa_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc())
-      : __vstring_base(__n, __c, __a) { }
-
-      /**
-       *  @brief  Construct string as copy of a range.
-       *  @param  __beg  Start of range.
-       *  @param  __end  End of range.
-       *  @param  __a  Allocator to use (default is default allocator).
-       */
-      template<class _InputIterator>
-        __versa_string(_InputIterator __beg, _InputIterator __end,
-		       const _Alloc& __a = _Alloc())
-	: __vstring_base(__beg, __end, __a) { }
-
-      /**
-       *  @brief  Destroy the string instance.
-       */
-      ~__versa_string() { }	
-
-      /**
-       *  @brief  Assign the value of @a str to this string.
-       *  @param  __str  Source string.
-       */
-      __versa_string&
-      operator=(const __versa_string& __str) 
-      { return this->assign(__str); }
-
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      /**
-       *  @brief  String move assignment operator.
-       *  @param  __str  Source string.
-       *
-       *  The contents of @a __str are moved into this string (without
-       *  copying).  @a __str is a valid, but unspecified string.
-       */
-      __versa_string&
-      operator=(__versa_string&& __str)
-      {
-	if (this != &__str)
-	  this->swap(__str);
-	return *this;
-      }
-
-      /**
-       *  @brief  Set value to string constructed from initializer list.
-       *  @param  __l  std::initializer_list.
-       */
-      __versa_string&
-      operator=(std::initializer_list<_CharT> __l)
-      {
-	this->assign(__l.begin(), __l.end());
-	return *this;
-      }
-#endif
-
-      /**
-       *  @brief  Copy contents of @a __s into this string.
-       *  @param  __s  Source null-terminated string.
-       */
-      __versa_string&
-      operator=(const _CharT* __s) 
-      { return this->assign(__s); }
-
-      /**
-       *  @brief  Set value to string of length 1.
-       *  @param  __c  Source character.
-       *
-       *  Assigning to a character makes this string length 1 and
-       *  (*this)[0] == @a __c.
-       */
-      __versa_string&
-      operator=(_CharT __c) 
-      { 
-	this->assign(1, __c); 
-	return *this;
-      }
-
-      // Iterators:
-      /**
-       *  Returns a read/write iterator that points to the first character in
-       *  the %string.  Unshares the string.
-       */
-      iterator
-      begin()
-      {
-	this->_M_leak();
-	return iterator(this->_M_data());
-      }
-
-      /**
-       *  Returns a read-only (constant) iterator that points to the first
-       *  character in the %string.
-       */
-      const_iterator
-      begin() const
-      { return const_iterator(this->_M_data()); }
-
-      /**
-       *  Returns a read/write iterator that points one past the last
-       *  character in the %string.  Unshares the string.
-       */
-      iterator
-      end()
-      {
-	this->_M_leak();
-	return iterator(this->_M_data() + this->size());
-      }
-
-      /**
-       *  Returns a read-only (constant) iterator that points one past the
-       *  last character in the %string.
-       */
-      const_iterator
-      end() const
-      { return const_iterator(this->_M_data() + this->size()); }
-
-      /**
-       *  Returns a read/write reverse iterator that points to the last
-       *  character in the %string.  Iteration is done in reverse element
-       *  order.  Unshares the string.
-       */
-      reverse_iterator
-      rbegin()
-      { return reverse_iterator(this->end()); }
-
-      /**
-       *  Returns a read-only (constant) reverse iterator that points
-       *  to the last character in the %string.  Iteration is done in
-       *  reverse element order.
-       */
-      const_reverse_iterator
-      rbegin() const
-      { return const_reverse_iterator(this->end()); }
-
-      /**
-       *  Returns a read/write reverse iterator that points to one before the
-       *  first character in the %string.  Iteration is done in reverse
-       *  element order.  Unshares the string.
-       */
-      reverse_iterator
-      rend()
-      { return reverse_iterator(this->begin()); }
-
-      /**
-       *  Returns a read-only (constant) reverse iterator that points
-       *  to one before the first character in the %string.  Iteration
-       *  is done in reverse element order.
-       */
-      const_reverse_iterator
-      rend() const
-      { return const_reverse_iterator(this->begin()); }
-
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      /**
-       *  Returns a read-only (constant) iterator that points to the first
-       *  character in the %string.
-       */
-      const_iterator
-      cbegin() const
-      { return const_iterator(this->_M_data()); }
-
-      /**
-       *  Returns a read-only (constant) iterator that points one past the
-       *  last character in the %string.
-       */
-      const_iterator
-      cend() const
-      { return const_iterator(this->_M_data() + this->size()); }
-
-      /**
-       *  Returns a read-only (constant) reverse iterator that points
-       *  to the last character in the %string.  Iteration is done in
-       *  reverse element order.
-       */
-      const_reverse_iterator
-      crbegin() const
-      { return const_reverse_iterator(this->end()); }
-
-      /**
-       *  Returns a read-only (constant) reverse iterator that points
-       *  to one before the first character in the %string.  Iteration
-       *  is done in reverse element order.
-       */
-      const_reverse_iterator
-      crend() const
-      { return const_reverse_iterator(this->begin()); }
-#endif
-
-    public:
-      // Capacity:
-      ///  Returns the number of characters in the string, not including any
-      ///  null-termination.
-      size_type
-      size() const
-      { return this->_M_length(); }
-
-      ///  Returns the number of characters in the string, not including any
-      ///  null-termination.
-      size_type
-      length() const
-      { return this->_M_length(); }
-
-      /// Returns the size() of the largest possible %string.
-      size_type
-      max_size() const
-      { return this->_M_max_size(); }
-
-      /**
-       *  @brief  Resizes the %string to the specified number of characters.
-       *  @param  __n  Number of characters the %string should contain.
-       *  @param  __c  Character to fill any new elements.
-       *
-       *  This function will %resize the %string to the specified
-       *  number of characters.  If the number is smaller than the
-       *  %string's current size the %string is truncated, otherwise
-       *  the %string is extended and new elements are set to @a __c.
-       */
-      void
-      resize(size_type __n, _CharT __c);
-
-      /**
-       *  @brief  Resizes the %string to the specified number of characters.
-       *  @param  __n  Number of characters the %string should contain.
-       *
-       *  This function will resize the %string to the specified
-       *  length.  If the new size is smaller than the %string's
-       *  current size the %string is truncated, otherwise the %string
-       *  is extended and new characters are default-constructed.  For
-       *  basic types such as char, this means setting them to 0.
-       */
-      void
-      resize(size_type __n)
-      { this->resize(__n, _CharT()); }
-
-      /**
-       *  Returns the total number of characters that the %string can
-       *  hold before needing to allocate more memory.
-       */
-      size_type
-      capacity() const
-      { return this->_M_capacity(); }
-
-      /**
-       *  @brief  Attempt to preallocate enough memory for specified number of
-       *          characters.
-       *  @param  __res_arg  Number of characters required.
-       *  @throw  std::length_error  If @a __res_arg exceeds @c max_size().
-       *
-       *  This function attempts to reserve enough memory for the
-       *  %string to hold the specified number of characters.  If the
-       *  number requested is more than max_size(), length_error is
-       *  thrown.
-       *
-       *  The advantage of this function is that if optimal code is a
-       *  necessity and the user can determine the string length that
-       *  will be required, the user can reserve the memory in
-       *  %advance, and thus prevent a possible reallocation of memory
-       *  and copying of %string data.
-       */
-      void
-      reserve(size_type __res_arg = 0)
-      { this->_M_reserve(__res_arg); }
-
-      /**
-       *  Erases the string, making it empty.
-       */
-      void
-      clear()
-      { this->_M_clear(); }
-
-      /**
-       *  Returns true if the %string is empty.  Equivalent to *this == "".
-       */
-      bool
-      empty() const
-      { return this->size() == 0; }
-
-      // Element access:
-      /**
-       *  @brief  Subscript access to the data contained in the %string.
-       *  @param  __pos  The index of the character to access.
-       *  @return  Read-only (constant) reference to the character.
-       *
-       *  This operator allows for easy, array-style, data access.
-       *  Note that data access with this operator is unchecked and
-       *  out_of_range lookups are not defined. (For checked lookups
-       *  see at().)
-       */
-      const_reference
-      operator[] (size_type __pos) const
-      {
-	_GLIBCXX_DEBUG_ASSERT(__pos <= this->size());
-	return this->_M_data()[__pos];
-      }
-
-      /**
-       *  @brief  Subscript access to the data contained in the %string.
-       *  @param  __pos  The index of the character to access.
-       *  @return  Read/write reference to the character.
-       *
-       *  This operator allows for easy, array-style, data access.
-       *  Note that data access with this operator is unchecked and
-       *  out_of_range lookups are not defined. (For checked lookups
-       *  see at().)  Unshares the string.
-       */
-      reference
-      operator[](size_type __pos)
-      {
-        // allow pos == size() as v3 extension:
-	_GLIBCXX_DEBUG_ASSERT(__pos <= this->size());
-        // but be strict in pedantic mode:
-	_GLIBCXX_DEBUG_PEDASSERT(__pos < this->size());
-	this->_M_leak();
-	return this->_M_data()[__pos];
-      }
-
-      /**
-       *  @brief  Provides access to the data contained in the %string.
-       *  @param __n The index of the character to access.
-       *  @return  Read-only (const) reference to the character.
-       *  @throw  std::out_of_range  If @a __n is an invalid index.
-       *
-       *  This function provides for safer data access.  The parameter
-       *  is first checked that it is in the range of the string.  The
-       *  function throws out_of_range if the check fails.
-       */
-      const_reference
-      at(size_type __n) const
-      {
-	if (__n >= this->size())
-	  std::__throw_out_of_range(__N("__versa_string::at"));
-	return this->_M_data()[__n];
-      }
-
-      /**
-       *  @brief  Provides access to the data contained in the %string.
-       *  @param __n The index of the character to access.
-       *  @return  Read/write reference to the character.
-       *  @throw  std::out_of_range  If @a __n is an invalid index.
-       *
-       *  This function provides for safer data access.  The parameter
-       *  is first checked that it is in the range of the string.  The
-       *  function throws out_of_range if the check fails.  Success
-       *  results in unsharing the string.
-       */
-      reference
-      at(size_type __n)
-      {
-	if (__n >= this->size())
-	  std::__throw_out_of_range(__N("__versa_string::at"));
-	this->_M_leak();
-	return this->_M_data()[__n];
-      }
-
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      /**
-       *  Returns a read/write reference to the data at the first
-       *  element of the %string.
-       */
-      reference
-      front()
-      { return *begin(); }
-
-      /**
-       *  Returns a read-only (constant) reference to the data at the first
-       *  element of the %string.
-       */
-      const_reference
-      front() const
-      { return *begin(); }
-
-      /**
-       *  Returns a read/write reference to the data at the last
-       *  element of the %string.
-       */
-      reference
-      back()
-      { return *(end() - 1); }
-
-      /**
-       *  Returns a read-only (constant) reference to the data at the
-       *  last element of the %string.
-       */
-      const_reference
-      back() const
-      { return *(end() - 1); }
-#endif
-
-      // Modifiers:
-      /**
-       *  @brief  Append a string to this string.
-       *  @param __str  The string to append.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      operator+=(const __versa_string& __str)
-      { return this->append(__str); }
-
-      /**
-       *  @brief  Append a C string.
-       *  @param __s  The C string to append.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      operator+=(const _CharT* __s)
-      { return this->append(__s); }
-
-      /**
-       *  @brief  Append a character.
-       *  @param __c  The character to append.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      operator+=(_CharT __c)
-      { 
-	this->push_back(__c);
-	return *this;
-      }
-
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      /**
-       *  @brief  Append an initializer_list of characters.
-       *  @param __l  The initializer_list of characters to be appended.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      operator+=(std::initializer_list<_CharT> __l)
-      { return this->append(__l.begin(), __l.end()); }
-#endif // __GXX_EXPERIMENTAL_CXX0X__
-
-      /**
-       *  @brief  Append a string to this string.
-       *  @param __str  The string to append.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      append(const __versa_string& __str)
-      { return _M_append(__str._M_data(), __str.size()); }
-
-      /**
-       *  @brief  Append a substring.
-       *  @param __str  The string to append.
-       *  @param __pos  Index of the first character of str to append.
-       *  @param __n  The number of characters to append.
-       *  @return  Reference to this string.
-       *  @throw  std::out_of_range if @a pos is not a valid index.
-       *
-       *  This function appends @a __n characters from @a __str
-       *  starting at @a __pos to this string.  If @a __n is is larger
-       *  than the number of available characters in @a __str, the
-       *  remainder of @a __str is appended.
-       */
-      __versa_string&
-      append(const __versa_string& __str, size_type __pos, size_type __n)
-      { return _M_append(__str._M_data()
-			 + __str._M_check(__pos, "__versa_string::append"),
-			 __str._M_limit(__pos, __n)); }
-
-      /**
-       *  @brief  Append a C substring.
-       *  @param __s  The C string to append.
-       *  @param __n  The number of characters to append.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      append(const _CharT* __s, size_type __n)
-      {
-	__glibcxx_requires_string_len(__s, __n);
-	_M_check_length(size_type(0), __n, "__versa_string::append");
-	return _M_append(__s, __n);
-      }
-
-      /**
-       *  @brief  Append a C string.
-       *  @param __s  The C string to append.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      append(const _CharT* __s)
-      {
-	__glibcxx_requires_string(__s);
-	const size_type __n = traits_type::length(__s);
-	_M_check_length(size_type(0), __n, "__versa_string::append");
-	return _M_append(__s, __n);
-      }
-
-      /**
-       *  @brief  Append multiple characters.
-       *  @param __n  The number of characters to append.
-       *  @param __c  The character to use.
-       *  @return  Reference to this string.
-       *
-       *  Appends n copies of c to this string.
-       */
-      __versa_string&
-      append(size_type __n, _CharT __c)
-      { return _M_replace_aux(this->size(), size_type(0), __n, __c); }
-
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      /**
-       *  @brief  Append an initializer_list of characters.
-       *  @param __l  The initializer_list of characters to append.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      append(std::initializer_list<_CharT> __l)
-      { return this->append(__l.begin(), __l.end()); }
-#endif // __GXX_EXPERIMENTAL_CXX0X__
-
-      /**
-       *  @brief  Append a range of characters.
-       *  @param __first  Iterator referencing the first character to append.
-       *  @param __last  Iterator marking the end of the range.
-       *  @return  Reference to this string.
-       *
-       *  Appends characters in the range [first,last) to this string.
-       */
-      template<class _InputIterator>
-        __versa_string&
-        append(_InputIterator __first, _InputIterator __last)
-        { return this->replace(_M_iend(), _M_iend(), __first, __last); }
-
-      /**
-       *  @brief  Append a single character.
-       *  @param __c  Character to append.
-       */
-      void
-      push_back(_CharT __c)
-      { 
-	const size_type __size = this->size();
-	if (__size + 1 > this->capacity() || this->_M_is_shared())
-	  this->_M_mutate(__size, size_type(0), 0, size_type(1));
-	traits_type::assign(this->_M_data()[__size], __c);
-	this->_M_set_length(__size + 1);
-      }
-
-      /**
-       *  @brief  Set value to contents of another string.
-       *  @param  __str  Source string to use.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      assign(const __versa_string& __str)
-      {
-	this->_M_assign(__str);
-	return *this;
-      }
-
-      /**
-       *  @brief  Set value to a substring of a string.
-       *  @param __str  The string to use.
-       *  @param __pos  Index of the first character of str.
-       *  @param __n  Number of characters to use.
-       *  @return  Reference to this string.
-       *  @throw  std::out_of_range if @a __pos is not a valid index.
-       *
-       *  This function sets this string to the substring of @a __str
-       *  consisting of @a __n characters at @a __pos.  If @a __n is
-       *  is larger than the number of available characters in @a
-       *  __str, the remainder of @a __str is used.
-       */
-      __versa_string&
-      assign(const __versa_string& __str, size_type __pos, size_type __n)
-      { return _M_replace(size_type(0), this->size(), __str._M_data()
-			  + __str._M_check(__pos, "__versa_string::assign"),
-			  __str._M_limit(__pos, __n)); }
-
-      /**
-       *  @brief  Set value to a C substring.
-       *  @param __s  The C string to use.
-       *  @param __n  Number of characters to use.
-       *  @return  Reference to this string.
-       *
-       *  This function sets the value of this string to the first @a
-       *  __n characters of @a __s.  If @a __n is is larger than the
-       *  number of available characters in @a __s, the remainder of
-       *  @a __s is used.
-       */
-      __versa_string&
-      assign(const _CharT* __s, size_type __n)
-      {
-	__glibcxx_requires_string_len(__s, __n);
-	return _M_replace(size_type(0), this->size(), __s, __n);
-      }
-
-      /**
-       *  @brief  Set value to contents of a C string.
-       *  @param __s  The C string to use.
-       *  @return  Reference to this string.
-       *
-       *  This function sets the value of this string to the value of
-       *  @a __s.  The data is copied, so there is no dependence on @a
-       *  __s once the function returns.
-       */
-      __versa_string&
-      assign(const _CharT* __s)
-      {
-	__glibcxx_requires_string(__s);
-	return _M_replace(size_type(0), this->size(), __s,
-			  traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Set value to multiple characters.
-       *  @param __n  Length of the resulting string.
-       *  @param __c  The character to use.
-       *  @return  Reference to this string.
-       *
-       *  This function sets the value of this string to @a __n copies of
-       *  character @a __c.
-       */
-      __versa_string&
-      assign(size_type __n, _CharT __c)
-      { return _M_replace_aux(size_type(0), this->size(), __n, __c); }
-
-      /**
-       *  @brief  Set value to a range of characters.
-       *  @param __first  Iterator referencing the first character to append.
-       *  @param __last  Iterator marking the end of the range.
-       *  @return  Reference to this string.
-       *
-       *  Sets value of string to characters in the range
-       *  [first,last).
-      */
-      template<class _InputIterator>
-        __versa_string&
-        assign(_InputIterator __first, _InputIterator __last)
-        { return this->replace(_M_ibegin(), _M_iend(), __first, __last); }
-
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      /**
-       *  @brief  Set value to an initializer_list of characters.
-       *  @param __l  The initializer_list of characters to assign.
-       *  @return  Reference to this string.
-       */
-      __versa_string&
-      assign(std::initializer_list<_CharT> __l)
-      { return this->assign(__l.begin(), __l.end()); }
-#endif // __GXX_EXPERIMENTAL_CXX0X__
-
-      /**
-       *  @brief  Insert multiple characters.
-       *  @param __p  Iterator referencing location in string to insert at.
-       *  @param __n  Number of characters to insert
-       *  @param __c  The character to insert.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Inserts @a __n copies of character @a __c starting at the
-       *  position referenced by iterator @a __p.  If adding
-       *  characters causes the length to exceed max_size(),
-       *  length_error is thrown.  The value of the string doesn't
-       *  change if an error is thrown.
-      */
-      void
-      insert(iterator __p, size_type __n, _CharT __c)
-      {	this->replace(__p, __p, __n, __c);  }
-
-      /**
-       *  @brief  Insert a range of characters.
-       *  @param __p  Iterator referencing location in string to insert at.
-       *  @param __beg  Start of range.
-       *  @param __end  End of range.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Inserts characters in range [beg,end).  If adding characters
-       *  causes the length to exceed max_size(), length_error is
-       *  thrown.  The value of the string doesn't change if an error
-       *  is thrown.
-      */
-      template<class _InputIterator>
-        void
-        insert(iterator __p, _InputIterator __beg, _InputIterator __end)
-        { this->replace(__p, __p, __beg, __end); }
-
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      /**
-       *  @brief  Insert an initializer_list of characters.
-       *  @param __p  Iterator referencing location in string to insert at.
-       *  @param __l  The initializer_list of characters to insert.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       */
-      void
-      insert(iterator __p, std::initializer_list<_CharT> __l)
-      { this->insert(__p, __l.begin(), __l.end()); }
-#endif // __GXX_EXPERIMENTAL_CXX0X__
-
-      /**
-       *  @brief  Insert value of a string.
-       *  @param __pos1  Iterator referencing location in string to insert at.
-       *  @param __str  The string to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Inserts value of @a __str starting at @a __pos1.  If adding
-       *  characters causes the length to exceed max_size(),
-       *  length_error is thrown.  The value of the string doesn't
-       *  change if an error is thrown.
-      */
-      __versa_string&
-      insert(size_type __pos1, const __versa_string& __str)
-      { return this->replace(__pos1, size_type(0),
-			     __str._M_data(), __str.size()); }
-
-      /**
-       *  @brief  Insert a substring.
-       *  @param __pos1  Iterator referencing location in string to insert at.
-       *  @param __str  The string to insert.
-       *  @param __pos2  Start of characters in str to insert.
-       *  @param __n  Number of characters to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *  @throw  std::out_of_range  If @a __pos1 > size() or
-       *  @a __pos2 > @a __str.size().
-       *
-       *  Starting at @a __pos1, insert @a __n character of @a __str
-       *  beginning with @a __pos2.  If adding characters causes the
-       *  length to exceed max_size(), length_error is thrown.  If @a
-       *  __pos1 is beyond the end of this string or @a __pos2 is
-       *  beyond the end of @a __str, out_of_range is thrown.  The
-       *  value of the string doesn't change if an error is thrown.
-      */
-      __versa_string&
-      insert(size_type __pos1, const __versa_string& __str,
-	     size_type __pos2, size_type __n)
-      { return this->replace(__pos1, size_type(0), __str._M_data()
-			     + __str._M_check(__pos2, "__versa_string::insert"),
-			     __str._M_limit(__pos2, __n)); }
-
-      /**
-       *  @brief  Insert a C substring.
-       *  @param __pos  Iterator referencing location in string to insert at.
-       *  @param __s  The C string to insert.
-       *  @param __n  The number of characters to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *  @throw  std::out_of_range  If @a __pos is beyond the end of this
-       *  string.
-       *
-       *  Inserts the first @a __n characters of @a __s starting at @a
-       *  __pos.  If adding characters causes the length to exceed
-       *  max_size(), length_error is thrown.  If @a __pos is beyond
-       *  end(), out_of_range is thrown.  The value of the string
-       *  doesn't change if an error is thrown.
-      */
-      __versa_string&
-      insert(size_type __pos, const _CharT* __s, size_type __n)
-      { return this->replace(__pos, size_type(0), __s, __n); }
-
-      /**
-       *  @brief  Insert a C string.
-       *  @param __pos  Iterator referencing location in string to insert at.
-       *  @param __s  The C string to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *  @throw  std::out_of_range  If @a __pos is beyond the end of this
-       *  string.
-       *
-       *  Inserts the first @a __n characters of @a __s starting at @a
-       *  __pos.  If adding characters causes the length to exceed
-       *  max_size(), length_error is thrown.  If @a __pos is beyond
-       *  end(), out_of_range is thrown.  The value of the string
-       *  doesn't change if an error is thrown.
-      */
-      __versa_string&
-      insert(size_type __pos, const _CharT* __s)
-      {
-	__glibcxx_requires_string(__s);
-	return this->replace(__pos, size_type(0), __s,
-			     traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Insert multiple characters.
-       *  @param __pos  Index in string to insert at.
-       *  @param __n  Number of characters to insert
-       *  @param __c  The character to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *  @throw  std::out_of_range  If @a __pos is beyond the end of this
-       *  string.
-       *
-       *  Inserts @a __n copies of character @a __c starting at index
-       *  @a __pos.  If adding characters causes the length to exceed
-       *  max_size(), length_error is thrown.  If @a __pos > length(),
-       *  out_of_range is thrown.  The value of the string doesn't
-       *  change if an error is thrown.
-      */
-      __versa_string&
-      insert(size_type __pos, size_type __n, _CharT __c)
-      { return _M_replace_aux(_M_check(__pos, "__versa_string::insert"),
-			      size_type(0), __n, __c); }
-
-      /**
-       *  @brief  Insert one character.
-       *  @param __p  Iterator referencing position in string to insert at.
-       *  @param __c  The character to insert.
-       *  @return  Iterator referencing newly inserted char.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Inserts character @a __c at position referenced by @a __p.
-       *  If adding character causes the length to exceed max_size(),
-       *  length_error is thrown.  If @a __p is beyond end of string,
-       *  out_of_range is thrown.  The value of the string doesn't
-       *  change if an error is thrown.
-      */
-      iterator
-      insert(iterator __p, _CharT __c)
-      {
-	_GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend());
-	const size_type __pos = __p - _M_ibegin();
-	_M_replace_aux(__pos, size_type(0), size_type(1), __c);
-	this->_M_set_leaked();
-	return iterator(this->_M_data() + __pos);
-      }
-
-      /**
-       *  @brief  Remove characters.
-       *  @param __pos  Index of first character to remove (default 0).
-       *  @param __n  Number of characters to remove (default remainder).
-       *  @return  Reference to this string.
-       *  @throw  std::out_of_range  If @a __pos is beyond the end of this
-       *  string.
-       *
-       *  Removes @a __n characters from this string starting at @a
-       *  __pos.  The length of the string is reduced by @a __n.  If
-       *  there are < @a __n characters to remove, the remainder of
-       *  the string is truncated.  If @a __p is beyond end of string,
-       *  out_of_range is thrown.  The value of the string doesn't
-       *  change if an error is thrown.
-      */
-      __versa_string&
-      erase(size_type __pos = 0, size_type __n = npos)
-      { 
-	this->_M_erase(_M_check(__pos, "__versa_string::erase"),
-		       _M_limit(__pos, __n));
-	return *this;
-      }
-
-      /**
-       *  @brief  Remove one character.
-       *  @param __position  Iterator referencing the character to remove.
-       *  @return  iterator referencing same location after removal.
-       *
-       *  Removes the character at @a __position from this string. The
-       *  value of the string doesn't change if an error is thrown.
-      */
-      iterator
-      erase(iterator __position)
-      {
-	_GLIBCXX_DEBUG_PEDASSERT(__position >= _M_ibegin()
-				 && __position < _M_iend());
-	const size_type __pos = __position - _M_ibegin();
-	this->_M_erase(__pos, size_type(1));
-	this->_M_set_leaked();
-	return iterator(this->_M_data() + __pos);
-      }
-
-      /**
-       *  @brief  Remove a range of characters.
-       *  @param __first  Iterator referencing the first character to remove.
-       *  @param __last  Iterator referencing the end of the range.
-       *  @return  Iterator referencing location of first after removal.
-       *
-       *  Removes the characters in the range [first,last) from this
-       *  string.  The value of the string doesn't change if an error
-       *  is thrown.
-      */
-      iterator
-      erase(iterator __first, iterator __last)
-      {
-	_GLIBCXX_DEBUG_PEDASSERT(__first >= _M_ibegin() && __first <= __last
-				 && __last <= _M_iend());
-        const size_type __pos = __first - _M_ibegin();
-	this->_M_erase(__pos, __last - __first);
-	this->_M_set_leaked();
-	return iterator(this->_M_data() + __pos);
-      }
-
-      /**
-       *  @brief  Replace characters with value from another string.
-       *  @param __pos  Index of first character to replace.
-       *  @param __n  Number of characters to be replaced.
-       *  @param __str  String to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::out_of_range  If @a __pos is beyond the end of this
-       *  string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [pos,pos+n) from this
-       *  string.  In place, the value of @a __str is inserted.  If @a
-       *  __pos is beyond end of string, out_of_range is thrown.  If
-       *  the length of the result exceeds max_size(), length_error is
-       *  thrown.  The value of the string doesn't change if an error
-       *  is thrown.
-      */
-      __versa_string&
-      replace(size_type __pos, size_type __n, const __versa_string& __str)
-      { return this->replace(__pos, __n, __str._M_data(), __str.size()); }
-
-      /**
-       *  @brief  Replace characters with value from another string.
-       *  @param __pos1  Index of first character to replace.
-       *  @param __n1  Number of characters to be replaced.
-       *  @param __str  String to insert.
-       *  @param __pos2  Index of first character of str to use.
-       *  @param __n2  Number of characters from str to use.
-       *  @return  Reference to this string.
-       *  @throw  std::out_of_range  If @a __pos1 > size() or @a __pos2 >
-       *  str.size().
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [pos1,pos1 + n) from
-       *  this string.  In place, the value of @a __str is inserted.
-       *  If @a __pos is beyond end of string, out_of_range is thrown.
-       *  If the length of the result exceeds max_size(), length_error
-       *  is thrown.  The value of the string doesn't change if an
-       *  error is thrown.
-      */
-      __versa_string&
-      replace(size_type __pos1, size_type __n1, const __versa_string& __str,
-	      size_type __pos2, size_type __n2)
-      {
-	return this->replace(__pos1, __n1, __str._M_data()
-			     + __str._M_check(__pos2,
-					      "__versa_string::replace"),
-			     __str._M_limit(__pos2, __n2));
-      }
-
-      /**
-       *  @brief  Replace characters with value of a C substring.
-       *  @param __pos  Index of first character to replace.
-       *  @param __n1  Number of characters to be replaced.
-       *  @param __s  C string to insert.
-       *  @param __n2  Number of characters from @a __s to use.
-       *  @return  Reference to this string.
-       *  @throw  std::out_of_range  If @a __pos1 > size().
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [pos,pos + n1) from this
-       *  string.  In place, the first @a __n2 characters of @a __s
-       *  are inserted, or all of @a __s if @a __n2 is too large.  If
-       *  @a __pos is beyond end of string, out_of_range is thrown.
-       *  If the length of result exceeds max_size(), length_error is
-       *  thrown.  The value of the string doesn't change if an error
-       *  is thrown.
-      */
-      __versa_string&
-      replace(size_type __pos, size_type __n1, const _CharT* __s,
-	      size_type __n2)
-      {
-	__glibcxx_requires_string_len(__s, __n2);
-	return _M_replace(_M_check(__pos, "__versa_string::replace"),
-			  _M_limit(__pos, __n1), __s, __n2);
-      }
-
-      /**
-       *  @brief  Replace characters with value of a C string.
-       *  @param __pos  Index of first character to replace.
-       *  @param __n1  Number of characters to be replaced.
-       *  @param __s  C string to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::out_of_range  If @a __pos > size().
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [pos,pos + n1) from this
-       *  string.  In place, the first @a __n characters of @a __s are
-       *  inserted.  If @a pos is beyond end of string, out_of_range
-       *  is thrown.  If the length of result exceeds max_size(),
-       *  length_error is thrown.  The value of the string doesn't
-       *  change if an error is thrown.
-      */
-      __versa_string&
-      replace(size_type __pos, size_type __n1, const _CharT* __s)
-      {
-	__glibcxx_requires_string(__s);
-	return this->replace(__pos, __n1, __s, traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Replace characters with multiple characters.
-       *  @param __pos  Index of first character to replace.
-       *  @param __n1  Number of characters to be replaced.
-       *  @param __n2  Number of characters to insert.
-       *  @param __c  Character to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::out_of_range  If @a __pos > size().
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [pos,pos + n1) from this
-       *  string.  In place, @a __n2 copies of @a __c are inserted.
-       *  If @a __pos is beyond end of string, out_of_range is thrown.
-       *  If the length of result exceeds max_size(), length_error is
-       *  thrown.  The value of the string doesn't change if an error
-       *  is thrown.
-      */
-      __versa_string&
-      replace(size_type __pos, size_type __n1, size_type __n2, _CharT __c)
-      { return _M_replace_aux(_M_check(__pos, "__versa_string::replace"),
-			      _M_limit(__pos, __n1), __n2, __c); }
-
-      /**
-       *  @brief  Replace range of characters with string.
-       *  @param __i1  Iterator referencing start of range to replace.
-       *  @param __i2  Iterator referencing end of range to replace.
-       *  @param __str  String value to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [i1,i2).  In place, the
-       *  value of @a __str is inserted.  If the length of result
-       *  exceeds max_size(), length_error is thrown.  The value of
-       *  the string doesn't change if an error is thrown.
-      */
-      __versa_string&
-      replace(iterator __i1, iterator __i2, const __versa_string& __str)
-      { return this->replace(__i1, __i2, __str._M_data(), __str.size()); }
-
-      /**
-       *  @brief  Replace range of characters with C substring.
-       *  @param __i1  Iterator referencing start of range to replace.
-       *  @param __i2  Iterator referencing end of range to replace.
-       *  @param __s  C string value to insert.
-       *  @param __n  Number of characters from s to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [i1,i2).  In place, the
-       *  first @a n characters of @a __s are inserted.  If the length
-       *  of result exceeds max_size(), length_error is thrown.  The
-       *  value of the string doesn't change if an error is thrown.
-      */
-      __versa_string&
-      replace(iterator __i1, iterator __i2, const _CharT* __s, size_type __n)
-      {
-	_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
-				 && __i2 <= _M_iend());
-	return this->replace(__i1 - _M_ibegin(), __i2 - __i1, __s, __n);
-      }
-
-      /**
-       *  @brief  Replace range of characters with C string.
-       *  @param __i1  Iterator referencing start of range to replace.
-       *  @param __i2  Iterator referencing end of range to replace.
-       *  @param __s  C string value to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [i1,i2).  In place, the
-       *  characters of @a __s are inserted.  If the length of result
-       *  exceeds max_size(), length_error is thrown.  The value of
-       *  the string doesn't change if an error is thrown.
-      */
-      __versa_string&
-      replace(iterator __i1, iterator __i2, const _CharT* __s)
-      {
-	__glibcxx_requires_string(__s);
-	return this->replace(__i1, __i2, __s, traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Replace range of characters with multiple characters
-       *  @param __i1  Iterator referencing start of range to replace.
-       *  @param __i2  Iterator referencing end of range to replace.
-       *  @param __n  Number of characters to insert.
-       *  @param __c  Character to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [i1,i2).  In place, @a
-       *  __n copies of @a __c are inserted.  If the length of result
-       *  exceeds max_size(), length_error is thrown.  The value of
-       *  the string doesn't change if an error is thrown.
-      */
-      __versa_string&
-      replace(iterator __i1, iterator __i2, size_type __n, _CharT __c)
-      {
-	_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
-				 && __i2 <= _M_iend());
-	return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __c);
-      }
-
-      /**
-       *  @brief  Replace range of characters with range.
-       *  @param __i1  Iterator referencing start of range to replace.
-       *  @param __i2  Iterator referencing end of range to replace.
-       *  @param __k1  Iterator referencing start of range to insert.
-       *  @param __k2  Iterator referencing end of range to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [i1,i2).  In place,
-       *  characters in the range [k1,k2) are inserted.  If the length
-       *  of result exceeds max_size(), length_error is thrown.  The
-       *  value of the string doesn't change if an error is thrown.
-      */
-      template<class _InputIterator>
-        __versa_string&
-        replace(iterator __i1, iterator __i2,
-		_InputIterator __k1, _InputIterator __k2)
-        {
-	  _GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
-				   && __i2 <= _M_iend());
-	  __glibcxx_requires_valid_range(__k1, __k2);
-	  typedef typename std::__is_integer<_InputIterator>::__type _Integral;
-	  return this->_M_replace_dispatch(__i1, __i2, __k1, __k2, _Integral());
-	}
-
-      // Specializations for the common case of pointer and iterator:
-      // useful to avoid the overhead of temporary buffering in _M_replace.
-      __versa_string&
-      replace(iterator __i1, iterator __i2, _CharT* __k1, _CharT* __k2)
-      {
-	_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
-				 && __i2 <= _M_iend());
-	__glibcxx_requires_valid_range(__k1, __k2);
-	return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
-			     __k1, __k2 - __k1);
-      }
-
-      __versa_string&
-      replace(iterator __i1, iterator __i2,
-	      const _CharT* __k1, const _CharT* __k2)
-      {
-	_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
-				 && __i2 <= _M_iend());
-	__glibcxx_requires_valid_range(__k1, __k2);
-	return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
-			     __k1, __k2 - __k1);
-      }
-
-      __versa_string&
-      replace(iterator __i1, iterator __i2, iterator __k1, iterator __k2)
-      {
-	_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
-				 && __i2 <= _M_iend());
-	__glibcxx_requires_valid_range(__k1, __k2);
-	return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
-			     __k1.base(), __k2 - __k1);
-      }
-
-      __versa_string&
-      replace(iterator __i1, iterator __i2,
-	      const_iterator __k1, const_iterator __k2)
-      {
-	_GLIBCXX_DEBUG_PEDASSERT(_M_ibegin() <= __i1 && __i1 <= __i2
-				 && __i2 <= _M_iend());
-	__glibcxx_requires_valid_range(__k1, __k2);
-	return this->replace(__i1 - _M_ibegin(), __i2 - __i1,
-			     __k1.base(), __k2 - __k1);
-      }
-      
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-      /**
-       *  @brief  Replace range of characters with initializer_list.
-       *  @param __i1  Iterator referencing start of range to replace.
-       *  @param __i2  Iterator referencing end of range to replace.
-       *  @param __l  The initializer_list of characters to insert.
-       *  @return  Reference to this string.
-       *  @throw  std::length_error  If new length exceeds @c max_size().
-       *
-       *  Removes the characters in the range [i1,i2).  In place,
-       *  characters in the range [k1,k2) are inserted.  If the length
-       *  of result exceeds max_size(), length_error is thrown.  The
-       *  value of the string doesn't change if an error is thrown.
-      */
-      __versa_string& replace(iterator __i1, iterator __i2,
-			      std::initializer_list<_CharT> __l)
-      { return this->replace(__i1, __i2, __l.begin(), __l.end()); }
-#endif // __GXX_EXPERIMENTAL_CXX0X__
-
-    private:
-      template<class _Integer>
-	__versa_string&
-	_M_replace_dispatch(iterator __i1, iterator __i2, _Integer __n,
-			    _Integer __val, std::__true_type)
-        { return _M_replace_aux(__i1 - _M_ibegin(), __i2 - __i1, __n, __val); }
-
-      template<class _InputIterator>
-	__versa_string&
-	_M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1,
-			    _InputIterator __k2, std::__false_type);
-
-      __versa_string&
-      _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
-		     _CharT __c);
-
-      __versa_string&
-      _M_replace(size_type __pos, size_type __len1, const _CharT* __s,
-		 const size_type __len2);
-
-      __versa_string&
-      _M_append(const _CharT* __s, size_type __n);
-
-    public:
-
-      /**
-       *  @brief  Copy substring into C string.
-       *  @param __s  C string to copy value into.
-       *  @param __n  Number of characters to copy.
-       *  @param __pos  Index of first character to copy.
-       *  @return  Number of characters actually copied
-       *  @throw  std::out_of_range  If pos > size().
-       *
-       *  Copies up to @a __n characters starting at @a __pos into the
-       *  C string @a s.  If @a __pos is greater than size(),
-       *  out_of_range is thrown.
-      */
-      size_type
-      copy(_CharT* __s, size_type __n, size_type __pos = 0) const;
-
-      /**
-       *  @brief  Swap contents with another string.
-       *  @param __s  String to swap with.
-       *
-       *  Exchanges the contents of this string with that of @a __s in
-       *  constant time.
-      */
-      void
-      swap(__versa_string& __s)
-      { this->_M_swap(__s); }
-
-      // String operations:
-      /**
-       *  @brief  Return const pointer to null-terminated contents.
-       *
-       *  This is a handle to internal data.  Do not modify or dire things may
-       *  happen.
-      */
-      const _CharT*
-      c_str() const
-      { return this->_M_data(); }
-
-      /**
-       *  @brief  Return const pointer to contents.
-       *
-       *  This is a handle to internal data.  Do not modify or dire things may
-       *  happen.
-      */
-      const _CharT*
-      data() const
-      { return this->_M_data(); }
-
-      /**
-       *  @brief  Return copy of allocator used to construct this string.
-      */
-      allocator_type
-      get_allocator() const
-      { return allocator_type(this->_M_get_allocator()); }
-
-      /**
-       *  @brief  Find position of a C substring.
-       *  @param __s  C string to locate.
-       *  @param __pos  Index of character to search from.
-       *  @param __n  Number of characters from @a __s to search for.
-       *  @return  Index of start of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for the first @a
-       *  __n characters in @a __s within this string.  If found,
-       *  returns the index where it begins.  If not found, returns
-       *  npos.
-      */
-      size_type
-      find(const _CharT* __s, size_type __pos, size_type __n) const;
-
-      /**
-       *  @brief  Find position of a string.
-       *  @param __str  String to locate.
-       *  @param __pos  Index of character to search from (default 0).
-       *  @return  Index of start of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for value of @a
-       *  __str within this string.  If found, returns the index where
-       *  it begins.  If not found, returns npos.
-      */
-      size_type
-      find(const __versa_string& __str, size_type __pos = 0) const
-      { return this->find(__str.data(), __pos, __str.size()); }
-
-      /**
-       *  @brief  Find position of a C string.
-       *  @param __s  C string to locate.
-       *  @param __pos  Index of character to search from (default 0).
-       *  @return  Index of start of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for the value of @a
-       *  __s within this string.  If found, returns the index where
-       *  it begins.  If not found, returns npos.
-      */
-      size_type
-      find(const _CharT* __s, size_type __pos = 0) const
-      {
-	__glibcxx_requires_string(__s);
-	return this->find(__s, __pos, traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Find position of a character.
-       *  @param __c  Character to locate.
-       *  @param __pos  Index of character to search from (default 0).
-       *  @return  Index of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for @a __c within
-       *  this string.  If found, returns the index where it was
-       *  found.  If not found, returns npos.
-      */
-      size_type
-      find(_CharT __c, size_type __pos = 0) const;
-
-      /**
-       *  @brief  Find last position of a string.
-       *  @param __str  String to locate.
-       *  @param __pos  Index of character to search back from (default end).
-       *  @return  Index of start of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for value of @a
-       *  __str within this string.  If found, returns the index where
-       *  it begins.  If not found, returns npos.
-      */
-      size_type
-      rfind(const __versa_string& __str, size_type __pos = npos) const
-      { return this->rfind(__str.data(), __pos, __str.size()); }
-
-      /**
-       *  @brief  Find last position of a C substring.
-       *  @param __s  C string to locate.
-       *  @param __pos  Index of character to search back from.
-       *  @param __n  Number of characters from s to search for.
-       *  @return  Index of start of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for the first @a
-       *  __n characters in @a __s within this string.  If found,
-       *  returns the index where it begins.  If not found, returns
-       *  npos.
-      */
-      size_type
-      rfind(const _CharT* __s, size_type __pos, size_type __n) const;
-
-      /**
-       *  @brief  Find last position of a C string.
-       *  @param __s  C string to locate.
-       *  @param __pos  Index of character to start search at (default end).
-       *  @return  Index of start of  last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for the value of
-       *  @a __s within this string.  If found, returns the index
-       *  where it begins.  If not found, returns npos.
-      */
-      size_type
-      rfind(const _CharT* __s, size_type __pos = npos) const
-      {
-	__glibcxx_requires_string(__s);
-	return this->rfind(__s, __pos, traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Find last position of a character.
-       *  @param __c  Character to locate.
-       *  @param __pos  Index of character to search back from (default end).
-       *  @return  Index of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for @a __c within
-       *  this string.  If found, returns the index where it was
-       *  found.  If not found, returns npos.
-      */
-      size_type
-      rfind(_CharT __c, size_type __pos = npos) const;
-
-      /**
-       *  @brief  Find position of a character of string.
-       *  @param __str  String containing characters to locate.
-       *  @param __pos  Index of character to search from (default 0).
-       *  @return  Index of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for one of the characters of
-       *  @a __str within this string.  If found, returns the index where it was
-       *  found.  If not found, returns npos.
-      */
-      size_type
-      find_first_of(const __versa_string& __str, size_type __pos = 0) const
-      { return this->find_first_of(__str.data(), __pos, __str.size()); }
-
-      /**
-       *  @brief  Find position of a character of C substring.
-       *  @param __s  String containing characters to locate.
-       *  @param __pos  Index of character to search from.
-       *  @param __n  Number of characters from s to search for.
-       *  @return  Index of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for one of the
-       *  first @a __n characters of @a __s within this string.  If
-       *  found, returns the index where it was found.  If not found,
-       *  returns npos.
-      */
-      size_type
-      find_first_of(const _CharT* __s, size_type __pos, size_type __n) const;
-
-      /**
-       *  @brief  Find position of a character of C string.
-       *  @param __s  String containing characters to locate.
-       *  @param __pos  Index of character to search from (default 0).
-       *  @return  Index of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for one of the
-       *  characters of @a __s within this string.  If found, returns
-       *  the index where it was found.  If not found, returns npos.
-      */
-      size_type
-      find_first_of(const _CharT* __s, size_type __pos = 0) const
-      {
-	__glibcxx_requires_string(__s);
-	return this->find_first_of(__s, __pos, traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Find position of a character.
-       *  @param __c  Character to locate.
-       *  @param __pos  Index of character to search from (default 0).
-       *  @return  Index of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for the character
-       *  @a __c within this string.  If found, returns the index
-       *  where it was found.  If not found, returns npos.
-       *
-       *  Note: equivalent to find(c, pos).
-      */
-      size_type
-      find_first_of(_CharT __c, size_type __pos = 0) const
-      { return this->find(__c, __pos); }
-
-      /**
-       *  @brief  Find last position of a character of string.
-       *  @param __str  String containing characters to locate.
-       *  @param __pos  Index of character to search back from (default end).
-       *  @return  Index of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for one of the
-       *  characters of @a __str within this string.  If found,
-       *  returns the index where it was found.  If not found, returns
-       *  npos.
-      */
-      size_type
-      find_last_of(const __versa_string& __str, size_type __pos = npos) const
-      { return this->find_last_of(__str.data(), __pos, __str.size()); }
-
-      /**
-       *  @brief  Find last position of a character of C substring.
-       *  @param __s  C string containing characters to locate.
-       *  @param __pos  Index of character to search back from.
-       *  @param __n  Number of characters from s to search for.
-       *  @return  Index of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for one of the
-       *  first @a __n characters of @a __s within this string.  If
-       *  found, returns the index where it was found.  If not found,
-       *  returns npos.
-      */
-      size_type
-      find_last_of(const _CharT* __s, size_type __pos, size_type __n) const;
-
-      /**
-       *  @brief  Find last position of a character of C string.
-       *  @param __s  C string containing characters to locate.
-       *  @param __pos  Index of character to search back from (default end).
-       *  @return  Index of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for one of the
-       *  characters of @a __s within this string.  If found, returns
-       *  the index where it was found.  If not found, returns npos.
-      */
-      size_type
-      find_last_of(const _CharT* __s, size_type __pos = npos) const
-      {
-	__glibcxx_requires_string(__s);
-	return this->find_last_of(__s, __pos, traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Find last position of a character.
-       *  @param __c  Character to locate.
-       *  @param __pos  Index of character to search back from (default end).
-       *  @return  Index of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for @a __c within
-       *  this string.  If found, returns the index where it was
-       *  found.  If not found, returns npos.
-       *
-       *  Note: equivalent to rfind(c, pos).
-      */
-      size_type
-      find_last_of(_CharT __c, size_type __pos = npos) const
-      { return this->rfind(__c, __pos); }
-
-      /**
-       *  @brief  Find position of a character not in string.
-       *  @param __str  String containing characters to avoid.
-       *  @param __pos  Index of character to search from (default 0).
-       *  @return  Index of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for a character not
-       *  contained in @a __str within this string.  If found, returns
-       *  the index where it was found.  If not found, returns npos.
-      */
-      size_type
-      find_first_not_of(const __versa_string& __str, size_type __pos = 0) const
-      { return this->find_first_not_of(__str.data(), __pos, __str.size()); }
-
-      /**
-       *  @brief  Find position of a character not in C substring.
-       *  @param __s  C string containing characters to avoid.
-       *  @param __pos  Index of character to search from.
-       *  @param __n  Number of characters from s to consider.
-       *  @return  Index of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for a character not
-       *  contained in the first @a __n characters of @a __s within
-       *  this string.  If found, returns the index where it was
-       *  found.  If not found, returns npos.
-      */
-      size_type
-      find_first_not_of(const _CharT* __s, size_type __pos,
-			size_type __n) const;
-
-      /**
-       *  @brief  Find position of a character not in C string.
-       *  @param __s  C string containing characters to avoid.
-       *  @param __pos  Index of character to search from (default 0).
-       *  @return  Index of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for a character not
-       *  contained in @a __s within this string.  If found, returns
-       *  the index where it was found.  If not found, returns npos.
-      */
-      size_type
-      find_first_not_of(const _CharT* __s, size_type __pos = 0) const
-      {
-	__glibcxx_requires_string(__s);
-	return this->find_first_not_of(__s, __pos, traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Find position of a different character.
-       *  @param __c  Character to avoid.
-       *  @param __pos  Index of character to search from (default 0).
-       *  @return  Index of first occurrence.
-       *
-       *  Starting from @a __pos, searches forward for a character
-       *  other than @a __c within this string.  If found, returns the
-       *  index where it was found.  If not found, returns npos.
-      */
-      size_type
-      find_first_not_of(_CharT __c, size_type __pos = 0) const;
-
-      /**
-       *  @brief  Find last position of a character not in string.
-       *  @param __str  String containing characters to avoid.
-       *  @param __pos  Index of character to search back from (default end).
-       *  @return  Index of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for a character
-       *  not contained in @a __str within this string.  If found,
-       *  returns the index where it was found.  If not found, returns
-       *  npos.
-      */
-      size_type
-      find_last_not_of(const __versa_string& __str,
-		       size_type __pos = npos) const
-      { return this->find_last_not_of(__str.data(), __pos, __str.size()); }
-
-      /**
-       *  @brief  Find last position of a character not in C substring.
-       *  @param __s  C string containing characters to avoid.
-       *  @param __pos  Index of character to search back from.
-       *  @param __n  Number of characters from s to consider.
-       *  @return  Index of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for a character
-       *  not contained in the first @a __n characters of @a __s
-       *  within this string.  If found, returns the index where it
-       *  was found.  If not found, returns npos.
-      */
-      size_type
-      find_last_not_of(const _CharT* __s, size_type __pos,
-		       size_type __n) const;
-      /**
-       *  @brief  Find last position of a character not in C string.
-       *  @param __s  C string containing characters to avoid.
-       *  @param __pos  Index of character to search back from (default end).
-       *  @return  Index of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for a character
-       *  not contained in @a __s within this string.  If found,
-       *  returns the index where it was found.  If not found, returns
-       *  npos.
-      */
-      size_type
-      find_last_not_of(const _CharT* __s, size_type __pos = npos) const
-      {
-	__glibcxx_requires_string(__s);
-	return this->find_last_not_of(__s, __pos, traits_type::length(__s));
-      }
-
-      /**
-       *  @brief  Find last position of a different character.
-       *  @param __c  Character to avoid.
-       *  @param __pos  Index of character to search back from (default end).
-       *  @return  Index of last occurrence.
-       *
-       *  Starting from @a __pos, searches backward for a character
-       *  other than @a __c within this string.  If found, returns the
-       *  index where it was found.  If not found, returns npos.
-      */
-      size_type
-      find_last_not_of(_CharT __c, size_type __pos = npos) const;
-
-      /**
-       *  @brief  Get a substring.
-       *  @param __pos  Index of first character (default 0).
-       *  @param __n  Number of characters in substring (default remainder).
-       *  @return  The new string.
-       *  @throw  std::out_of_range  If pos > size().
-       *
-       *  Construct and return a new string using the @a __n
-       *  characters starting at @a __pos.  If the string is too
-       *  short, use the remainder of the characters.  If @a __pos is
-       *  beyond the end of the string, out_of_range is thrown.
-      */
-      __versa_string
-      substr(size_type __pos = 0, size_type __n = npos) const
-      {
-	return __versa_string(*this, _M_check(__pos, "__versa_string::substr"),
-			      __n);
-      }
-
-      /**
-       *  @brief  Compare to a string.
-       *  @param __str  String to compare against.
-       *  @return  Integer < 0, 0, or > 0.
-       *
-       *  Returns an integer < 0 if this string is ordered before @a
-       *  __str, 0 if their values are equivalent, or > 0 if this
-       *  string is ordered after @a __str.  Determines the effective
-       *  length rlen of the strings to compare as the smallest of
-       *  size() and str.size().  The function then compares the two
-       *  strings by calling traits::compare(data(), str.data(),rlen).
-       *  If the result of the comparison is nonzero returns it,
-       *  otherwise the shorter one is ordered first.
-      */
-      int
-      compare(const __versa_string& __str) const
-      {
-	if (this->_M_compare(__str))
-	  return 0;
-
-	const size_type __size = this->size();
-	const size_type __osize = __str.size();
-	const size_type __len = std::min(__size, __osize);
-
-	int __r = traits_type::compare(this->_M_data(), __str.data(), __len);
-	if (!__r)
-	  __r = this->_S_compare(__size, __osize);
-	return __r;
-      }
-
-      /**
-       *  @brief  Compare substring to a string.
-       *  @param __pos  Index of first character of substring.
-       *  @param __n  Number of characters in substring.
-       *  @param __str  String to compare against.
-       *  @return  Integer < 0, 0, or > 0.
-       *
-       *  Form the substring of this string from the @a __n characters
-       *  starting at @a __pos.  Returns an integer < 0 if the
-       *  substring is ordered before @a __str, 0 if their values are
-       *  equivalent, or > 0 if the substring is ordered after @a
-       *  __str.  Determines the effective length rlen of the strings
-       *  to compare as the smallest of the length of the substring
-       *  and @a __str.size().  The function then compares the two
-       *  strings by calling
-       *  traits::compare(substring.data(),str.data(),rlen).  If the
-       *  result of the comparison is nonzero returns it, otherwise
-       *  the shorter one is ordered first.
-      */
-      int
-      compare(size_type __pos, size_type __n,
-	      const __versa_string& __str) const;
-
-      /**
-       *  @brief  Compare substring to a substring.
-       *  @param __pos1  Index of first character of substring.
-       *  @param __n1  Number of characters in substring.
-       *  @param __str  String to compare against.
-       *  @param __pos2  Index of first character of substring of str.
-       *  @param __n2  Number of characters in substring of str.
-       *  @return  Integer < 0, 0, or > 0.
-       *
-       *  Form the substring of this string from the @a __n1
-       *  characters starting at @a __pos1.  Form the substring of @a
-       *  __str from the @a __n2 characters starting at @a __pos2.
-       *  Returns an integer < 0 if this substring is ordered before
-       *  the substring of @a __str, 0 if their values are equivalent,
-       *  or > 0 if this substring is ordered after the substring of
-       *  @a __str.  Determines the effective length rlen of the
-       *  strings to compare as the smallest of the lengths of the
-       *  substrings.  The function then compares the two strings by
-       *  calling
-       *  traits::compare(substring.data(),str.substr(pos2,n2).data(),rlen).
-       *  If the result of the comparison is nonzero returns it,
-       *  otherwise the shorter one is ordered first.
-      */
-      int
-      compare(size_type __pos1, size_type __n1, const __versa_string& __str,
-	      size_type __pos2, size_type __n2) const;
-
-      /**
-       *  @brief  Compare to a C string.
-       *  @param __s  C string to compare against.
-       *  @return  Integer < 0, 0, or > 0.
-       *
-       *  Returns an integer < 0 if this string is ordered before @a
-       *  __s, 0 if their values are equivalent, or > 0 if this string
-       *  is ordered after @a __s.  Determines the effective length
-       *  rlen of the strings to compare as the smallest of size() and
-       *  the length of a string constructed from @a __s.  The
-       *  function then compares the two strings by calling
-       *  traits::compare(data(),s,rlen).  If the result of the
-       *  comparison is nonzero returns it, otherwise the shorter one
-       *  is ordered first.
-      */
-      int
-      compare(const _CharT* __s) const;
-
-      // _GLIBCXX_RESOLVE_LIB_DEFECTS
-      // 5 String::compare specification questionable
-      /**
-       *  @brief  Compare substring to a C string.
-       *  @param __pos  Index of first character of substring.
-       *  @param __n1  Number of characters in substring.
-       *  @param __s  C string to compare against.
-       *  @return  Integer < 0, 0, or > 0.
-       *
-       *  Form the substring of this string from the @a __n1
-       *  characters starting at @a __pos.  Returns an integer < 0 if
-       *  the substring is ordered before @a __s, 0 if their values
-       *  are equivalent, or > 0 if the substring is ordered after @a
-       *  __s.  Determines the effective length rlen of the strings to
-       *  compare as the smallest of the length of the substring and
-       *  the length of a string constructed from @a __s.  The
-       *  function then compares the two string by calling
-       *  traits::compare(substring.data(),s,rlen).  If the result of
-       *  the comparison is nonzero returns it, otherwise the shorter
-       *  one is ordered first.
-      */
-      int
-      compare(size_type __pos, size_type __n1, const _CharT* __s) const;
-
-      /**
-       *  @brief  Compare substring against a character array.
-       *  @param __pos1  Index of first character of substring.
-       *  @param __n1  Number of characters in substring.
-       *  @param __s  character array to compare against.
-       *  @param __n2  Number of characters of s.
-       *  @return  Integer < 0, 0, or > 0.
-       *
-       *  Form the substring of this string from the @a __n1
-       *  characters starting at @a __pos1.  Form a string from the
-       *  first @a __n2 characters of @a __s.  Returns an integer < 0
-       *  if this substring is ordered before the string from @a __s,
-       *  0 if their values are equivalent, or > 0 if this substring
-       *  is ordered after the string from @a __s.  Determines the
-       *  effective length rlen of the strings to compare as the
-       *  smallest of the length of the substring and @a __n2.  The
-       *  function then compares the two strings by calling
-       *  traits::compare(substring.data(),s,rlen).  If the result of
-       *  the comparison is nonzero returns it, otherwise the shorter
-       *  one is ordered first.
-       *
-       *  NB: s must have at least n2 characters, '\\0' has no special
-       *  meaning.
-      */
-      int
-      compare(size_type __pos, size_type __n1, const _CharT* __s,
-	      size_type __n2) const;
-    };
-
-  // operator+
-  /**
-   *  @brief  Concatenate two strings.
-   *  @param __lhs  First string.
-   *  @param __rhs  Last string.
-   *  @return  New string with value of @a __lhs followed by @a __rhs.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    __versa_string<_CharT, _Traits, _Alloc, _Base>
-    operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	      const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs);
-
-  /**
-   *  @brief  Concatenate C string and string.
-   *  @param __lhs  First string.
-   *  @param __rhs  Last string.
-   *  @return  New string with value of @a __lhs followed by @a __rhs.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    __versa_string<_CharT, _Traits, _Alloc, _Base>
-    operator+(const _CharT* __lhs,
-	      const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs);
-
-  /**
-   *  @brief  Concatenate character and string.
-   *  @param __lhs  First string.
-   *  @param __rhs  Last string.
-   *  @return  New string with @a __lhs followed by @a __rhs.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    __versa_string<_CharT, _Traits, _Alloc, _Base>
-    operator+(_CharT __lhs,
-	      const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs);
-
-  /**
-   *  @brief  Concatenate string and C string.
-   *  @param __lhs  First string.
-   *  @param __rhs  Last string.
-   *  @return  New string with @a __lhs followed by @a __rhs.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    __versa_string<_CharT, _Traits, _Alloc, _Base>
-    operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	      const _CharT* __rhs);
-
-  /**
-   *  @brief  Concatenate string and character.
-   *  @param __lhs  First string.
-   *  @param __rhs  Last string.
-   *  @return  New string with @a __lhs followed by @a __rhs.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    __versa_string<_CharT, _Traits, _Alloc, _Base>
-    operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	      _CharT __rhs);
-
-  // operator ==
-  /**
-   *  @brief  Test equivalence of two strings.
-   *  @param __lhs  First string.
-   *  @param __rhs  Second string.
-   *  @return  True if @a __lhs.compare(@a __rhs) == 0.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator==(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	       const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __lhs.compare(__rhs) == 0; }
-
-  template<typename _CharT,
-	   template <typename, typename, typename> class _Base>
-    inline typename __enable_if<std::__is_char<_CharT>::__value, bool>::__type
-    operator==(const __versa_string<_CharT, std::char_traits<_CharT>,
-	       std::allocator<_CharT>, _Base>& __lhs,
-	       const __versa_string<_CharT, std::char_traits<_CharT>,
-	       std::allocator<_CharT>, _Base>& __rhs)
-    { return (__lhs.size() == __rhs.size()
-	      && !std::char_traits<_CharT>::compare(__lhs.data(), __rhs.data(),
-						    __lhs.size())); }
-
-  /**
-   *  @brief  Test equivalence of C string and string.
-   *  @param __lhs  C string.
-   *  @param __rhs  String.
-   *  @return  True if @a __rhs.compare(@a __lhs) == 0.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator==(const _CharT* __lhs,
-	       const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __rhs.compare(__lhs) == 0; }
-
-  /**
-   *  @brief  Test equivalence of string and C string.
-   *  @param __lhs  String.
-   *  @param __rhs  C string.
-   *  @return  True if @a __lhs.compare(@a __rhs) == 0.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator==(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	       const _CharT* __rhs)
-    { return __lhs.compare(__rhs) == 0; }
-
-  // operator !=
-  /**
-   *  @brief  Test difference of two strings.
-   *  @param __lhs  First string.
-   *  @param __rhs  Second string.
-   *  @return  True if @a __lhs.compare(@a __rhs) != 0.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator!=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	       const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return !(__lhs == __rhs); }
-
-  /**
-   *  @brief  Test difference of C string and string.
-   *  @param __lhs  C string.
-   *  @param __rhs  String.
-   *  @return  True if @a __rhs.compare(@a __lhs) != 0.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator!=(const _CharT* __lhs,
-	       const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return !(__lhs == __rhs); }
-
-  /**
-   *  @brief  Test difference of string and C string.
-   *  @param __lhs  String.
-   *  @param __rhs  C string.
-   *  @return  True if @a __lhs.compare(@a __rhs) != 0.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator!=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	       const _CharT* __rhs)
-    { return !(__lhs == __rhs); }
-
-  // operator <
-  /**
-   *  @brief  Test if string precedes string.
-   *  @param __lhs  First string.
-   *  @param __rhs  Second string.
-   *  @return  True if @a __lhs precedes @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator<(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	      const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __lhs.compare(__rhs) < 0; }
-
-  /**
-   *  @brief  Test if string precedes C string.
-   *  @param __lhs  String.
-   *  @param __rhs  C string.
-   *  @return  True if @a __lhs precedes @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator<(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	      const _CharT* __rhs)
-    { return __lhs.compare(__rhs) < 0; }
-
-  /**
-   *  @brief  Test if C string precedes string.
-   *  @param __lhs  C string.
-   *  @param __rhs  String.
-   *  @return  True if @a __lhs precedes @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator<(const _CharT* __lhs,
-	      const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __rhs.compare(__lhs) > 0; }
-
-  // operator >
-  /**
-   *  @brief  Test if string follows string.
-   *  @param __lhs  First string.
-   *  @param __rhs  Second string.
-   *  @return  True if @a __lhs follows @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator>(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	      const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __lhs.compare(__rhs) > 0; }
-
-  /**
-   *  @brief  Test if string follows C string.
-   *  @param __lhs  String.
-   *  @param __rhs  C string.
-   *  @return  True if @a __lhs follows @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator>(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	      const _CharT* __rhs)
-    { return __lhs.compare(__rhs) > 0; }
-
-  /**
-   *  @brief  Test if C string follows string.
-   *  @param __lhs  C string.
-   *  @param __rhs  String.
-   *  @return  True if @a __lhs follows @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator>(const _CharT* __lhs,
-	      const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __rhs.compare(__lhs) < 0; }
-
-  // operator <=
-  /**
-   *  @brief  Test if string doesn't follow string.
-   *  @param __lhs  First string.
-   *  @param __rhs  Second string.
-   *  @return  True if @a __lhs doesn't follow @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator<=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	       const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __lhs.compare(__rhs) <= 0; }
-
-  /**
-   *  @brief  Test if string doesn't follow C string.
-   *  @param __lhs  String.
-   *  @param __rhs  C string.
-   *  @return  True if @a __lhs doesn't follow @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator<=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	       const _CharT* __rhs)
-    { return __lhs.compare(__rhs) <= 0; }
-
-  /**
-   *  @brief  Test if C string doesn't follow string.
-   *  @param __lhs  C string.
-   *  @param __rhs  String.
-   *  @return  True if @a __lhs doesn't follow @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator<=(const _CharT* __lhs,
-	       const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __rhs.compare(__lhs) >= 0; }
-
-  // operator >=
-  /**
-   *  @brief  Test if string doesn't precede string.
-   *  @param __lhs  First string.
-   *  @param __rhs  Second string.
-   *  @return  True if @a __lhs doesn't precede @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator>=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	       const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __lhs.compare(__rhs) >= 0; }
-
-  /**
-   *  @brief  Test if string doesn't precede C string.
-   *  @param __lhs  String.
-   *  @param __rhs  C string.
-   *  @return  True if @a __lhs doesn't precede @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator>=(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	       const _CharT* __rhs)
-    { return __lhs.compare(__rhs) >= 0; }
-
-  /**
-   *  @brief  Test if C string doesn't precede string.
-   *  @param __lhs  C string.
-   *  @param __rhs  String.
-   *  @return  True if @a __lhs doesn't precede @a __rhs.  False otherwise.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline bool
-    operator>=(const _CharT* __lhs,
-	       const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { return __rhs.compare(__lhs) <= 0; }
-
-  /**
-   *  @brief  Swap contents of two strings.
-   *  @param __lhs  First string.
-   *  @param __rhs  Second string.
-   *
-   *  Exchanges the contents of @a __lhs and @a __rhs in constant time.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline void
-    swap(__versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	 __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { __lhs.swap(__rhs); }
-
-#ifdef __GXX_EXPERIMENTAL_CXX0X__
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline void
-    swap(__versa_string<_CharT, _Traits, _Alloc, _Base>&& __lhs,
-	 __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
-    { __lhs.swap(__rhs); }
-
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline void
-    swap(__versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
-	 __versa_string<_CharT, _Traits, _Alloc, _Base>&& __rhs)
-    { __lhs.swap(__rhs); }
-#endif
-
-_GLIBCXX_END_NAMESPACE
-
-_GLIBCXX_BEGIN_NAMESPACE(std)
-
-  /**
-   *  @brief  Read stream into a string.
-   *  @param __is  Input stream.
-   *  @param __str  Buffer to store into.
-   *  @return  Reference to the input stream.
-   *
-   *  Stores characters from @a __is into @a __str until whitespace is
-   *  found, the end of the stream is encountered, or str.max_size()
-   *  is reached.  If is.width() is non-zero, that is the limit on the
-   *  number of characters stored into @a __str.  Any previous
-   *  contents of @a __str are erased.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-           template <typename, typename, typename> class _Base>
-    basic_istream<_CharT, _Traits>&
-    operator>>(basic_istream<_CharT, _Traits>& __is,
-	       __gnu_cxx::__versa_string<_CharT, _Traits,
-	                                 _Alloc, _Base>& __str);
-
-  /**
-   *  @brief  Write string to a stream.
-   *  @param __os  Output stream.
-   *  @param __str  String to write out.
-   *  @return  Reference to the output stream.
-   *
-   *  Output characters of @a __str into os following the same rules as for
-   *  writing a C string.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-	   template <typename, typename, typename> class _Base>
-    inline basic_ostream<_CharT, _Traits>&
-    operator<<(basic_ostream<_CharT, _Traits>& __os,
-	       const __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc,
-	       _Base>& __str)
-    {
-      // _GLIBCXX_RESOLVE_LIB_DEFECTS
-      // 586. string inserter not a formatted function
-      return __ostream_insert(__os, __str.data(), __str.size());
-    }
-
-  /**
-   *  @brief  Read a line from stream into a string.
-   *  @param __is  Input stream.
-   *  @param __str  Buffer to store into.
-   *  @param __delim  Character marking end of line.
-   *  @return  Reference to the input stream.
-   *
-   *  Stores characters from @a __is into @a __str until @a __delim is
-   *  found, the end of the stream is encountered, or str.max_size()
-   *  is reached.  If is.width() is non-zero, that is the limit on the
-   *  number of characters stored into @a __str.  Any previous
-   *  contents of @a __str are erased.  If @a delim was encountered,
-   *  it is extracted but not stored into @a __str.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-           template <typename, typename, typename> class _Base>
-    basic_istream<_CharT, _Traits>&
-    getline(basic_istream<_CharT, _Traits>& __is,
-	    __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>& __str,
-	    _CharT __delim);
-
-  /**
-   *  @brief  Read a line from stream into a string.
-   *  @param __is  Input stream.
-   *  @param __str  Buffer to store into.
-   *  @return  Reference to the input stream.
-   *
-   *  Stores characters from is into @a __str until '\n' is found, the
-   *  end of the stream is encountered, or str.max_size() is reached.
-   *  If is.width() is non-zero, that is the limit on the number of
-   *  characters stored into @a __str.  Any previous contents of @a
-   *  __str are erased.  If end of line was encountered, it is
-   *  extracted but not stored into @a __str.
-   */
-  template<typename _CharT, typename _Traits, typename _Alloc,
-           template <typename, typename, typename> class _Base>
-    inline basic_istream<_CharT, _Traits>&
-    getline(basic_istream<_CharT, _Traits>& __is,
-	    __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>& __str)
-    { return getline(__is, __str, __is.widen('\n')); }      
-
-_GLIBCXX_END_NAMESPACE
-
-#if (defined(__GXX_EXPERIMENTAL_CXX0X__) && defined(_GLIBCXX_USE_C99))
-
-#include <ext/string_conversions.h>
-
-_GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
-
-  // 21.4 Numeric Conversions [string.conversions].
-  inline int
-  stoi(const __vstring& __str, std::size_t* __idx = 0, int __base = 10)
-  { return __gnu_cxx::__stoa<long, int>(&std::strtol, "stoi", __str.c_str(),
-					__idx, __base); }
-
-  inline long
-  stol(const __vstring& __str, std::size_t* __idx = 0, int __base = 10)
-  { return __gnu_cxx::__stoa(&std::strtol, "stol", __str.c_str(),
-			     __idx, __base); }
-
-  inline unsigned long
-  stoul(const __vstring& __str, std::size_t* __idx = 0, int __base = 10)
-  { return __gnu_cxx::__stoa(&std::strtoul, "stoul", __str.c_str(),
-			     __idx, __base); }
-
-  inline long long
-  stoll(const __vstring& __str, std::size_t* __idx = 0,	int __base = 10)
-  { return __gnu_cxx::__stoa(&std::strtoll, "stoll", __str.c_str(),
-			     __idx, __base); }
-
-  inline unsigned long long
-  stoull(const __vstring& __str, std::size_t* __idx, int __base = 10)
-  { return __gnu_cxx::__stoa(&std::strtoull, "stoull", __str.c_str(),
-			     __idx, __base); }
-
-  // NB: strtof vs strtod.
-  inline float
-  stof(const __vstring& __str, std::size_t* __idx = 0)
-  { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); }
-
-  inline double
-  stod(const __vstring& __str, std::size_t* __idx = 0)
-  { return __gnu_cxx::__stoa(&std::strtod, "stod", __str.c_str(), __idx); }
-
-  inline long double
-  stold(const __vstring& __str, std::size_t* __idx = 0)
-  { return __gnu_cxx::__stoa(&std::strtold, "stold", __str.c_str(), __idx); }
-
-  // NB: (v)snprintf vs sprintf.
-  inline __vstring
-  to_string(long long __val)
-  { return __gnu_cxx::__to_xstring<__vstring>(&std::vsnprintf,
-					      4 * sizeof(long long),
-					      "%lld", __val); }
-
-  inline __vstring
-  to_string(unsigned long long __val)
-  { return __gnu_cxx::__to_xstring<__vstring>(&std::vsnprintf,
-					      4 * sizeof(unsigned long long),
-					      "%llu", __val); }
-
-  inline __vstring
-  to_string(long double __val)
-  {
-    const int __n = __numeric_traits<long double>::__max_exponent10 + 20;
-    return __gnu_cxx::__to_xstring<__vstring>(&std::vsnprintf, __n,
-					      "%Lf", __val);
-  }
-
-#ifdef _GLIBCXX_USE_WCHAR_T
-  inline int 
-  stoi(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
-  { return __gnu_cxx::__stoa<long, int>(&std::wcstol, "stoi", __str.c_str(),
-					__idx, __base); }
-
-  inline long 
-  stol(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
-  { return __gnu_cxx::__stoa(&std::wcstol, "stol", __str.c_str(),
-			     __idx, __base); }
-
-  inline unsigned long
-  stoul(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
-  { return __gnu_cxx::__stoa(&std::wcstoul, "stoul", __str.c_str(),
-			     __idx, __base); }
-
-  inline long long
-  stoll(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
-  { return __gnu_cxx::__stoa(&std::wcstoll, "stoll", __str.c_str(),
-			     __idx, __base); }
-
-  inline unsigned long long
-  stoull(const __wvstring& __str, std::size_t* __idx = 0, int __base = 10)
-  { return __gnu_cxx::__stoa(&std::wcstoull, "stoull", __str.c_str(),
-			     __idx, __base); }
-
-  // NB: wcstof vs wcstod.
-  inline float
-  stof(const __wvstring& __str, std::size_t* __idx = 0)
-  { return __gnu_cxx::__stoa(&std::wcstof, "stof", __str.c_str(), __idx); }
-
-  inline double
-  stod(const __wvstring& __str, std::size_t* __idx = 0)
-  { return __gnu_cxx::__stoa(&std::wcstod, "stod", __str.c_str(), __idx); }
-
-  inline long double
-  stold(const __wvstring& __str, std::size_t* __idx = 0)
-  { return __gnu_cxx::__stoa(&std::wcstold, "stold", __str.c_str(), __idx); }
-
-  inline __wvstring
-  to_wstring(long long __val)
-  { return __gnu_cxx::__to_xstring<__wvstring>(&std::vswprintf,
-					       4 * sizeof(long long),
-					       L"%lld", __val); }
-
-  inline __wvstring
-  to_wstring(unsigned long long __val)
-  { return __gnu_cxx::__to_xstring<__wvstring>(&std::vswprintf,
-					       4 * sizeof(unsigned long long),
-					       L"%llu", __val); }
-
-  inline __wvstring
-  to_wstring(long double __val)
-  {
-    const int __n = __numeric_traits<long double>::__max_exponent10 + 20;
-    return __gnu_cxx::__to_xstring<__wvstring>(&std::vswprintf, __n,
-					       L"%Lf", __val);
-  }
-#endif
-
-_GLIBCXX_END_NAMESPACE
-
-#endif
-
-#ifndef _GLIBCXX_EXPORT_TEMPLATE
-# include "vstring.tcc" 
-#endif
-
-#if __google_stl_debug_string && !defined(_GLIBCXX_DEBUG)
-// Undo our defines, so they don't affect anything else.
-# undef _GLIBCXX_DEBUG_ASSERT
-# undef _GLIBCXX_DEBUG_PEDASSERT
-# define _GLIBCXX_DEBUG_ASSERT(_Condition)
-# define _GLIBCXX_DEBUG_PEDASSERT(_Condition)
-#endif
-
-#endif /* _VSTRING_H */