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Commit 872d8fea by Paolo Carlini Committed by Paolo Carlini
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Add class __versa_string, a versatile "basic_string-type" class... 

2005-07-05  Paolo Carlini  <pcarlini@suse.de>

	Add class __versa_string, a versatile "basic_string-type" class:
	an additional, non-standard, template parameter allows to specify
	the preferred base class. Two are provided: __rc_string_base,
	which implements a behavior very similar to our standard string,
	and __sso_string_base, not reference-counted and optimized for
	short strings.
	* include/ext/rc_string_base.h: New.
	* include/ext/sso_string_base.h: Likewise.
	* include/ext/vstring.h: Likewise.
	* include/ext/vstring.tcc: Likewise.
	* include/ext/vstring_fwd.h: Likewise.
	* include/ext/vstring_util.h: Likewise.
	* include/Makefile.am: Add.
	* include/Makefile.in: Regenerate.
	* testsuite/ext/vstring/explicit_instantiation/1.cc: New.
	* testsuite/ext/vstring/explicit_instantiation/2.cc: Likewise.
	* testsuite/ext/vstring/explicit_instantiation/char/1.cc: Likewise.
	* testsuite/ext/vstring/explicit_instantiation/wchar_t/1.cc: Likewise.

	* Makefile.in: Regenerate with autotools 1.9.3 (to date, the version
	officially used by v3).
	* aclocal.m4: Likewise.
	* libmath/Makefile.in: Likewise.
	* libsupc++/Makefile.in: Likewise.
	* po/Makefile.in: Likewise.
	* src/Makefile.in: Likewise.
	* testsuite/Makefile.in: Likewise.

From-SVN: r101639
parent 83522e18
Showing with 455 additions and 32 deletions
libstdc++-v3/ChangeLog
2005-07-05 Paolo Carlini <pcarlini@suse.de>
Add class __versa_string, a versatile "basic_string-type" class:
an additional, non-standard, template parameter allows to specify
the preferred base class. Two are provided: __rc_string_base,
which implements a behavior very similar to our standard string,
and __sso_string_base, not reference-counted and optimized for
short strings.
* include/ext/rc_string_base.h: New.
* include/ext/sso_string_base.h: Likewise.
* include/ext/vstring.h: Likewise.
* include/ext/vstring.tcc: Likewise.
* include/ext/vstring_fwd.h: Likewise.
* include/ext/vstring_util.h: Likewise.
* include/Makefile.am: Add.
* include/Makefile.in: Regenerate.
* testsuite/ext/vstring/explicit_instantiation/1.cc: New.
* testsuite/ext/vstring/explicit_instantiation/2.cc: Likewise.
* testsuite/ext/vstring/explicit_instantiation/char/1.cc: Likewise.
* testsuite/ext/vstring/explicit_instantiation/wchar_t/1.cc: Likewise.
* Makefile.in: Regenerate with autotools 1.9.3 (to date, the version
officially used by v3).
* aclocal.m4: Likewise.
* libmath/Makefile.in: Likewise.
* libsupc++/Makefile.in: Likewise.
* po/Makefile.in: Likewise.
* src/Makefile.in: Likewise.
* testsuite/Makefile.in: Likewise.
2005-07-01 Paolo Carlini <pcarlini@suse.de>
Port from libstdcxx_so_7-branch:
......
libstdc++-v3/Makefile.in
# Makefile.in generated by automake 1.9.5 from Makefile.am.
# Makefile.in generated by automake 1.9.3 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005 Free Software Foundation, Inc.
# 2003, 2004 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
......@@ -408,13 +408,7 @@ uninstall-info-am:
# (which will cause the Makefiles to be regenerated when you run `make');
# (2) otherwise, pass the desired values on the `make' command line.
$(RECURSIVE_TARGETS):
@failcom='exit 1'; \
for f in x $$MAKEFLAGS; do \
case $$f in \
*=* | --[!k]*);; \
*k*) failcom='fail=yes';; \
esac; \
done; \
@set fnord $$MAKEFLAGS; amf=$$2; \
dot_seen=no; \
target=`echo $@ | sed s/-recursive//`; \
list='$(SUBDIRS)'; for subdir in $$list; do \
......@@ -426,7 +420,7 @@ $(RECURSIVE_TARGETS):
local_target="$$target"; \
fi; \
(cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
|| eval $$failcom; \
|| case "$$amf" in *=*) exit 1;; *k*) fail=yes;; *) exit 1;; esac; \
done; \
if test "$$dot_seen" = "no"; then \
$(MAKE) $(AM_MAKEFLAGS) "$$target-am" || exit 1; \
......@@ -434,13 +428,7 @@ $(RECURSIVE_TARGETS):
mostlyclean-recursive clean-recursive distclean-recursive \
maintainer-clean-recursive:
@failcom='exit 1'; \
for f in x $$MAKEFLAGS; do \
case $$f in \
*=* | --[!k]*);; \
*k*) failcom='fail=yes';; \
esac; \
done; \
@set fnord $$MAKEFLAGS; amf=$$2; \
dot_seen=no; \
case "$@" in \
distclean-* | maintainer-clean-*) list='$(DIST_SUBDIRS)' ;; \
......@@ -461,7 +449,7 @@ maintainer-clean-recursive:
local_target="$$target"; \
fi; \
(cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
|| eval $$failcom; \
|| case "$$amf" in *=*) exit 1;; *k*) fail=yes;; *) exit 1;; esac; \
done && test -z "$$fail"
tags-recursive:
list='$(SUBDIRS)'; for subdir in $$list; do \
......
libstdc++-v3/include/Makefile.am
......@@ -456,7 +456,13 @@ ext_headers = \
${ext_srcdir}/rope \
${ext_srcdir}/ropeimpl.h \
${ext_srcdir}/slist \
${ext_srcdir}/typelist.h
${ext_srcdir}/typelist.h \
${ext_srcdir}/rc_string_base.h \
${ext_srcdir}/sso_string_base.h \
${ext_srcdir}/vstring.h \
${ext_srcdir}/vstring.tcc \
${ext_srcdir}/vstring_fwd.h \
${ext_srcdir}/vstring_util.h
tr1_srcdir = ${glibcxx_srcdir}/include/tr1
......
libstdc++-v3/include/Makefile.in
# Makefile.in generated by automake 1.9.5 from Makefile.am.
# Makefile.in generated by automake 1.9.3 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005 Free Software Foundation, Inc.
# 2003, 2004 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
......@@ -666,7 +666,13 @@ ext_headers = \
${ext_srcdir}/rope \
${ext_srcdir}/ropeimpl.h \
${ext_srcdir}/slist \
${ext_srcdir}/typelist.h
${ext_srcdir}/typelist.h \
${ext_srcdir}/rc_string_base.h \
${ext_srcdir}/sso_string_base.h \
${ext_srcdir}/vstring.h \
${ext_srcdir}/vstring.tcc \
${ext_srcdir}/vstring_fwd.h \
${ext_srcdir}/vstring_util.h
tr1_srcdir = ${glibcxx_srcdir}/include/tr1
tr1_builddir = ./tr1
......
libstdc++-v3/include/ext/vstring_fwd.h 0 → 100644
// Versatile string forward -*- C++ -*-
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
/** @file ext/vstring_fwd.h
* This file is a GNU extension to the Standard C++ Library.
* This is an internal header file, included by other library headers.
* You should not attempt to use it directly.
*/
#ifndef _VSTRING_FWD_H
#define _VSTRING_FWD_H 1
#pragma GCC system_header
#include <bits/c++config.h>
#include <bits/char_traits.h>
#include <memory> // For allocator.
namespace __gnu_cxx
{
template<typename _CharT, typename _Traits, typename _Alloc>
class __sso_string_base;
template<typename _CharT, typename _Traits, typename _Alloc>
class __rc_string_base;
template<typename _CharT, typename _Traits = std::char_traits<_CharT>,
typename _Alloc = std::allocator<_CharT>,
template
<typename, typename, typename> class _Base = __sso_string_base>
class __versa_string;
typedef __versa_string<char> __vstring;
typedef __vstring __sso_string;
typedef
__versa_string<char, std::char_traits<char>,
std::allocator<char>, __rc_string_base> __rc_string;
#ifdef _GLIBCXX_USE_WCHAR_T
typedef __versa_string<wchar_t> __wvstring;
typedef __wvstring __wsso_string;
typedef
__versa_string<wchar_t, std::char_traits<wchar_t>,
std::allocator<wchar_t>, __rc_string_base> __wrc_string;
#endif
} // namespace __gnu_cxx
#endif /* _VSTRING_FWD_H */
libstdc++-v3/include/ext/vstring_util.h 0 → 100644
// Versatile string utilities -*- C++ -*-
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
/** @file ext/vstring_util.h
* This file is a GNU extension to the Standard C++ Library.
* This is an internal header file, included by other library headers.
* You should not attempt to use it directly.
*/
#ifndef _VSTRING_UTIL_H
#define _VSTRING_UTIL_H 1
#pragma GCC system_header
#include <ext/vstring_fwd.h>
#include <debug/debug.h>
#include <bits/stl_function.h> // For less
#include <bits/functexcept.h>
#include <locale>
#include <algorithm> // For std::distance, srd::search.
namespace __gnu_cxx
{
template<typename _Type>
inline bool
__is_null_p(_Type* __ptr)
{ return __ptr == 0; }
template<typename _Type>
inline bool
__is_null_p(_Type)
{ return false; }
template<typename _CharT, typename _Traits, typename _Alloc>
struct __vstring_utility
{
typedef typename _Alloc::template rebind<_CharT>::other _CharT_alloc_type;
typedef _Traits traits_type;
typedef typename _Traits::char_type value_type;
typedef typename _CharT_alloc_type::size_type size_type;
typedef typename _CharT_alloc_type::pointer pointer;
typedef typename _CharT_alloc_type::const_pointer const_pointer;
// For __sso_string.
typedef __gnu_cxx::
__normal_iterator<pointer, __gnu_cxx::
__versa_string<_CharT, _Traits, _Alloc,
__sso_string_base> >
__sso_iterator;
typedef __gnu_cxx::
__normal_iterator<const_pointer, __gnu_cxx::
__versa_string<_CharT, _Traits, _Alloc,
__sso_string_base> >
__const_sso_iterator;
// For __rc_string.
typedef __gnu_cxx::
__normal_iterator<pointer, __gnu_cxx::
__versa_string<_CharT, _Traits, _Alloc,
__rc_string_base> >
__rc_iterator;
typedef __gnu_cxx::
__normal_iterator<const_pointer, __gnu_cxx::
__versa_string<_CharT, _Traits, _Alloc,
__rc_string_base> >
__const_rc_iterator;
// When __n = 1 way faster than the general multichar
// traits_type::copy/move/assign.
static void
_S_copy(_CharT* __d, const _CharT* __s, size_type __n)
{
if (__n == 1)
traits_type::assign(*__d, *__s);
else
traits_type::copy(__d, __s, __n);
}
static void
_S_move(_CharT* __d, const _CharT* __s, size_type __n)
{
if (__n == 1)
traits_type::assign(*__d, *__s);
else
traits_type::move(__d, __s, __n);
}
static void
_S_assign(_CharT* __d, size_type __n, _CharT __c)
{
if (__n == 1)
traits_type::assign(*__d, __c);
else
traits_type::assign(__d, __n, __c);
}
// _S_copy_chars is a separate template to permit specialization
// to optimize for the common case of pointers as iterators.
template<class _Iterator>
static void
_S_copy_chars(_CharT* __p, _Iterator __k1, _Iterator __k2)
{
for (; __k1 != __k2; ++__k1, ++__p)
traits_type::assign(*__p, *__k1); // These types are off.
}
static void
_S_copy_chars(_CharT* __p, __sso_iterator __k1, __sso_iterator __k2)
{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
static void
_S_copy_chars(_CharT* __p, __const_sso_iterator __k1,
__const_sso_iterator __k2)
{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
static void
_S_copy_chars(_CharT* __p, __rc_iterator __k1, __rc_iterator __k2)
{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
static void
_S_copy_chars(_CharT* __p, __const_rc_iterator __k1,
__const_rc_iterator __k2)
{ _S_copy_chars(__p, __k1.base(), __k2.base()); }
static void
_S_copy_chars(_CharT* __p, _CharT* __k1, _CharT* __k2)
{ _S_copy(__p, __k1, __k2 - __k1); }
static void
_S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2)
{ _S_copy(__p, __k1, __k2 - __k1); }
};
} // namespace __gnu_cxx
#endif /* _VSTRING_UTIL_H */
libstdc++-v3/libmath/Makefile.in
# Makefile.in generated by automake 1.9.5 from Makefile.am.
# Makefile.in generated by automake 1.9.3 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005 Free Software Foundation, Inc.
# 2003, 2004 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
......
libstdc++-v3/libsupc++/Makefile.in
# Makefile.in generated by automake 1.9.5 from Makefile.am.
# Makefile.in generated by automake 1.9.3 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005 Free Software Foundation, Inc.
# 2003, 2004 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
......
libstdc++-v3/po/Makefile.in
# Makefile.in generated by automake 1.9.5 from Makefile.am.
# Makefile.in generated by automake 1.9.3 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005 Free Software Foundation, Inc.
# 2003, 2004 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
......
libstdc++-v3/src/Makefile.in
# Makefile.in generated by automake 1.9.5 from Makefile.am.
# Makefile.in generated by automake 1.9.3 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005 Free Software Foundation, Inc.
# 2003, 2004 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
......
libstdc++-v3/testsuite/Makefile.in
# Makefile.in generated by automake 1.9.5 from Makefile.am.
# Makefile.in generated by automake 1.9.3 from Makefile.am.
# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005 Free Software Foundation, Inc.
# 2003, 2004 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
......
libstdc++-v3/testsuite/ext/vstring/explicit_instantiation/1.cc 0 → 100644
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// This file tests explicit instantiation of __versa_string
#include <ext/vstring.h>
// { dg-do compile }
// libstdc++/21770
template class __gnu_cxx::__versa_string<int, std::char_traits<int>,
std::allocator<char> >;
libstdc++-v3/testsuite/ext/vstring/explicit_instantiation/2.cc 0 → 100644
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// This file tests explicit instantiation of __versa_string
#include <ext/vstring.h>
// { dg-do compile }
// libstdc++/21770
template class __gnu_cxx::__versa_string<int, std::char_traits<int>,
std::allocator<char>,
__gnu_cxx::__sso_string_base>;
template class __gnu_cxx::__versa_string<int, std::char_traits<int>,
std::allocator<char>,
__gnu_cxx::__rc_string_base>;
libstdc++-v3/testsuite/ext/vstring/explicit_instantiation/char/1.cc 0 → 100644
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// This file tests explicit instantiation of __versa_string
#include <ext/vstring.h>
// { dg-do compile }
template class __gnu_cxx::__versa_string<char, std::char_traits<char>,
std::allocator<char>,
__gnu_cxx::__sso_string_base>;
template class __gnu_cxx::__versa_string<char, std::char_traits<char>,
std::allocator<char>,
__gnu_cxx::__rc_string_base>;
libstdc++-v3/testsuite/ext/vstring/explicit_instantiation/wchar_t/1.cc 0 → 100644
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// This file tests explicit instantiation of __versa_string
#include <ext/vstring.h>
// { dg-do compile }
template class __gnu_cxx::__versa_string<wchar_t, std::char_traits<wchar_t>,
std::allocator<wchar_t>,
__gnu_cxx::__sso_string_base>;
template class __gnu_cxx::__versa_string<wchar_t, std::char_traits<wchar_t>,
std::allocator<wchar_t>,
__gnu_cxx::__rc_string_base>;
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