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* [gcc r11-4493] libstdc++: Implement C++20 features for <sstream>
@ 2020-10-28 18:57 Thomas Rodgers
0 siblings, 0 replies; only message in thread
From: Thomas Rodgers @ 2020-10-28 18:57 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:a0e4d7b44c544c84cffc7ff9c64b6f1af14fb08d
commit r11-4493-ga0e4d7b44c544c84cffc7ff9c64b6f1af14fb08d
Author: Thomas Rodgers <trodgers@redhat.com>
Date: Wed Oct 28 11:52:17 2020 -0700
libstdc++: Implement C++20 features for <sstream>
New ctors and ::view() accessor for -
* basic_stingbuf
* basic_istringstream
* basic_ostringstream
* basic_stringstreamm
New ::get_allocator() accessor for basic_stringbuf.
libstdc++-v3/ChangeLog:
* acinclude.m4 (glibcxx_SUBDIRS): Add src/c++20.
* config/abi/pre/gnu.ver (GLIBCXX_3.4.29): New symbols.
* configure: Regenerate.
* include/std/sstream:
(basic_stringbuf::basic_stringbuf(allocator const&)): New constructor.
(basic_stringbuf::basic_stringbuf(openmode, allocator const&)): Likewise.
(basic_stringbuf::basic_stringbuf(basic_string&&, openmode)): Likewise.
(basic_stringbuf::basic_stringbuf(basic_stringbuf&&, allocator const&)):
Likewise.
(basic_stringbuf::get_allocator()): New method.
(basic_stringbuf::view()): Likewise.
(basic_istringstream::basic_istringstream(basic_string&&, openmode)):
New constructor.
(basic_istringstream::basic_istringstream(openmode, allocator const&)):
Likewise
(basic_istringstream::view()): New method.
(basic_ostringstream::basic_ostringstream(basic_string&&, openmode)):
New constructor.
(basic_ostringstream::basic_ostringstream(openmode, allocator const&)):
Likewise
(basic_ostringstream::view()): New method.
(basic_stringstream::basic_stringstream(basic_string&&, openmode)):
New constructor.
(basic_stringstream::basic_stringstream(openmode, allocator const&)):
Likewise
(basic_stringstream::view()): New method.
* src/Makefile.in: Add c++20 directory.
* src/Makefile.am: Regenerate.
* src/c++20/Makefile.am: Add makefile for new sub-directory.
* src/c++20/Makefile.in: Generate.
* src/c++20/sstream-inst.cc: New file defining explicit
instantiations for basic_stringbuf, basic_istringstream,
basic_ostringstream, and basic_stringstream member functions
added in C++20.
* testsuite/27_io/basic_stringbuf/cons/char/2.cc: New test.
* testsuite/27_io/basic_stringbuf/cons/wchar_t/2.cc: Likewise.
* testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
* testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
* testsuite/27_io/basic_istringstream/cons/char/1.cc: Likewise.
* testsuite/27_io/basic_istringstream/cons/wchar_t/1.cc: Likewise.
* testsuite/27_io/basic_istringstream/view/char/1.cc: Likewise.
* testsuite/27_io/basic_istringstream/view/wchar_t/1.cc: Likewise.
* testsuite/27_io/basic_ostringstream/cons/char/1.cc: Likewise.
* testsuite/27_io/basic_ostringstream/cons/wchar_t/1.cc: Likewise.
* testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
* testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc: Likewise.
* testsuite/27_io/basic_stringstream/cons/char/1.cc: Likewise.
* testsuite/27_io/basic_stringstream/cons/wchar_t/1.cc: Likewise.
* testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
* testsuite/27_io/basic_stringstream/view/wchar_t/1.cc: Likewise.
Diff:
---
libstdc++-v3/acinclude.m4 | 2 +-
libstdc++-v3/config/abi/pre/gnu.ver | 108 ++-
libstdc++-v3/configure | 16 +-
libstdc++-v3/include/std/sstream | 196 ++++++
libstdc++-v3/src/Makefile.am | 12 +-
libstdc++-v3/src/Makefile.in | 14 +-
libstdc++-v3/src/c++20/Makefile.am | 105 +++
libstdc++-v3/src/c++20/Makefile.in | 735 +++++++++++++++++++++
libstdc++-v3/src/c++20/sstream-inst.cc | 108 +++
.../27_io/basic_istringstream/cons/char/1.cc | 85 +++
.../27_io/basic_istringstream/cons/wchar_t/1.cc | 85 +++
.../27_io/basic_istringstream/view/char/1.cc | 35 +
.../27_io/basic_istringstream/view/wchar_t/1.cc | 35 +
.../27_io/basic_ostringstream/cons/char/1.cc | 85 +++
.../27_io/basic_ostringstream/cons/wchar_t/1.cc | 85 +++
.../27_io/basic_ostringstream/view/char/1.cc | 35 +
.../27_io/basic_ostringstream/view/wchar_t/1.cc | 35 +
.../testsuite/27_io/basic_stringbuf/cons/char/2.cc | 121 ++++
.../27_io/basic_stringbuf/cons/wchar_t/2.cc | 105 +++
.../testsuite/27_io/basic_stringbuf/view/char/1.cc | 35 +
.../27_io/basic_stringbuf/view/wchar_t/1.cc | 35 +
.../27_io/basic_stringstream/cons/char/1.cc | 85 +++
.../27_io/basic_stringstream/cons/wchar_t/1.cc | 85 +++
.../27_io/basic_stringstream/view/char/1.cc | 35 +
.../27_io/basic_stringstream/view/wchar_t/1.cc | 35 +
25 files changed, 2287 insertions(+), 25 deletions(-)
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 133125ec4fa..b9452dd74cd 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -49,7 +49,7 @@ AC_DEFUN([GLIBCXX_CONFIGURE], [
# Keep these sync'd with the list in Makefile.am. The first provides an
# expandable list at autoconf time; the second provides an expandable list
# (i.e., shell variable) at configure time.
- m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/c++17 src/filesystem doc po testsuite python])
+ m4_define([glibcxx_SUBDIRS],[include libsupc++ src src/c++98 src/c++11 src/c++17 src/c++20 src/filesystem doc po testsuite python])
SUBDIRS='glibcxx_SUBDIRS'
# These need to be absolute paths, yet at the same time need to
diff --git a/libstdc++-v3/config/abi/pre/gnu.ver b/libstdc++-v3/config/abi/pre/gnu.ver
index a7f437aef7b..2648c813616 100644
--- a/libstdc++-v3/config/abi/pre/gnu.ver
+++ b/libstdc++-v3/config/abi/pre/gnu.ver
@@ -1769,21 +1769,31 @@ GLIBCXX_3.4.21 {
# ABI-tagged stringstreams
# _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]*;
- _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]E[ORS]*;
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EOS4_;
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EOSa*;
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ERKNS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ESt13_Ios_Openmode;
_ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EED[012]Ev;
_ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]*__xfer_bufptrs*;
_ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE[a1346789]*;
# _ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]*;
- _ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]E[ORS]*;
+ _ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EOS4_;
+ _ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EOSa*;
+ _ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ERKNS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+ _ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ESt13_Ios_Openmode;
_ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EED[012]Ev;
_ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE[a34]*;
# _ZNSt7__cxx1119basic_istringstreamI[cw]St11char_traitsI[cw]*;
# _ZNSt7__cxx1119basic_ostringstreamI[cw]St11char_traitsI[cw]*;
- _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]E[ORS]*;
+ _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EOS4_;
+ _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EOSa*;
+ _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ERKNS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+ _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ESt13_Ios_Openmode;
_ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EED[012]Ev;
_ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE[a34]*;
_ZNKSt7__cxx1115basic_stringbuf*;
- _ZNKSt7__cxx1118basic_stringstream*;
+ _ZNKSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE3strEv;
+ _ZNKSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE5rdbufEv;
_ZNKSt7__cxx1119basic_istringstream*;
_ZNKSt7__cxx1119basic_ostringstream*;
_ZT[ISTV]NSt7__cxx1115basic_stringbuf*;
@@ -2325,6 +2335,87 @@ GLIBCXX_3.4.29 {
# std::__throw_bad_array_new_length()
_ZSt28__throw_bad_array_new_lengthv;
+ # basic_stringbuf::basic_stringbuf(allocator const&)
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC1ERKS3_;
+
+ # basic_stringbuf::basic_stringbuf(ios_base::openmode, allocator const&)
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC1ESt13_Ios_OpenmodeRKS3;
+
+ # basic_stringbuf::basic_stringbuf(basic_string&&, ios_base::openmode)
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC1EONS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+
+ # basic_stringbuf::basic_stringbuf(basic_stringbuf&&, allocator const&)
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaIcEEC1EOS4_RKS3_;
+
+ # basic_stringbuf::get_allocator()
+ _ZNKSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE13get_allocatorEv;
+
+ # basic_stringbuf::view()
+ _ZNKSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE4viewEv;
+
+ # basic_istringstream::basic_istringstream(basic_string&&, ios_base::openmode)
+ _ZNSt7__cxx1119basic_istringstreamI[cw]St11char_traitsI[cw]ESaIcEEC1EONS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+
+ # basic_istringstream::basic_istringstream(ios_base::openmode, allocator const&)
+ _ZNSt7__cxx1119basic_istringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC1ESt13_Ios_OpenmodeRKS3_;
+
+ # basic_istringstream::view()
+ _ZNKSt7__cxx1119basic_istringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE4viewEv;
+
+ # basic_ostringstream::basic_ostringstream(basic_string&&, ios_base::openmode)
+ _ZNSt7__cxx1119basic_ostringstreamI[cw]St11char_traitsI[cw]ESaIcEEC1EONS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+
+ # basic_ostringstream::basic_ostringstream(ios_base::openmode, allocator const&)
+ _ZNSt7__cxx1119basic_ostringstreamI[cw]St11char_traitsI[cw]ESaIcEEC1ESt13_Ios_OpenmodeRKS3_;
+
+ # basic_ostringstream::view()
+ _ZNKSt7__cxx1119basic_ostringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE4viewEv;
+
+ # basic_stringstream::basic_stringstream(basic_string&&, ios_base::openmode)
+ _ZNSt7__cxx1119basic_stringstreamI[cw]St11char_traitsI[cw]ESaIcEEC1EONS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+
+ # basic_stringstream::basic_stringstream(ios_base::openmode, allocator const&)
+ _ZNSt7__cxx1119basic_stringstreamI[cw]St11char_traitsI[cw]ESaIcEEC1ESt13_Ios_OpenmodeRKS3_;
+
+ # basic_stringstream::view()
+ _ZNKSt7__cxx1119basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE4viewEv;
+
+ # basic_stringbuf::basic_stringbuf(allocator const&)
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ERKS3_;
+
+ # basic_stringbuf::basic_stringbuf(ios_base::openmode, allocator const&)
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ESt13_Ios_OpenmodeRKS3_;
+
+ # basic_stringbuf::basic_stringbuf(basic_string&&, ios_base::openmode)
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EONS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+
+ # basic_stringbuf::basic_stringbuf(basic_stringbuf&&, allocator const&)
+ _ZNSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EOS4_RKS3_;
+
+ # basic_stringbuf::get_allocator()
+ _ZNKSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE13get_allocatorEv;
+
+ # basic_stringbuf::view()
+ _ZNKSt7__cxx1115basic_stringbufI[cw]St11char_traitsI[cw]ESaI[cw]EE4viewEv;
+
+ # basic_istringstream::basic_istringstream(basic_string&&, ios_base::openmode)
+ _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EONS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+
+ # basic_[io]stringstream::basic_[io]stringstream(ios_base::openmode, allocator const&)
+ _ZNSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ESt13_Ios_OpenmodeRKS3_;
+
+ # basic_istringstream::view()
+ _ZNKSt7__cxx1119basic_[io]stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE4viewEv;
+
+ # basic_stringstream::basic_stringstream(basic_string&&, ios_base::openmode)
+ _ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]EONS_12basic_stringI[cw]S2_S3_EESt13_Ios_Openmode;
+
+ # basic_stringstream::basic_stringstream(ios_base::openmode, allocator const&)
+ _ZNSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EEC[12]ESt13_Ios_OpenmodeRKS3_;
+
+ # basic_stringstream::view()
+ _ZNKSt7__cxx1118basic_stringstreamI[cw]St11char_traitsI[cw]ESaI[cw]EE4viewEv;
+
} GLIBCXX_3.4.28;
# Symbols in the support library (libsupc++) have their own tag.
@@ -2625,15 +2716,6 @@ CXXABI_1.3.12 {
} CXXABI_1.3.11;
-CXXABI_1.3.13 {
-
- # std::exception_ptr::_M_addref()
- _ZNSt15__exception_ptr13exception_ptr9_M_addrefEv;
- # std::exception_ptr::_M_release()
- _ZNSt15__exception_ptr13exception_ptr10_M_releaseEv;
-
-} CXXABI_1.3.12;
-
# Symbols in the support library (libsupc++) supporting transactional memory.
CXXABI_TM_1 {
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 0213c3c6bc4..efdec6e68b9 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -5418,7 +5418,7 @@ $as_echo "$ac_cv_path_EGREP" >&6; }
# expandable list at autoconf time; the second provides an expandable list
# (i.e., shell variable) at configure time.
- SUBDIRS='include libsupc++ src src/c++98 src/c++11 src/c++17 src/filesystem doc po testsuite python'
+ SUBDIRS='include libsupc++ src src/c++98 src/c++11 src/c++17 src/c++20 src/filesystem doc po testsuite python'
# These need to be absolute paths, yet at the same time need to
# canonicalize only relative paths, because then amd will not unmount
@@ -78394,7 +78394,7 @@ ac_config_files="$ac_config_files doc/xsl/customization.xsl"
# append it here. Only modify Makefiles that have just been created.
#
# Also, get rid of this simulated-VPATH thing that automake does.
-ac_config_files="$ac_config_files include/Makefile libsupc++/Makefile src/Makefile src/c++98/Makefile src/c++11/Makefile src/c++17/Makefile src/filesystem/Makefile doc/Makefile po/Makefile testsuite/Makefile python/Makefile"
+ac_config_files="$ac_config_files include/Makefile libsupc++/Makefile src/Makefile src/c++98/Makefile src/c++11/Makefile src/c++17/Makefile src/c++20/Makefile src/filesystem/Makefile doc/Makefile po/Makefile testsuite/Makefile python/Makefile"
ac_config_commands="$ac_config_commands generate-headers"
@@ -79650,6 +79650,7 @@ do
"src/c++98/Makefile") CONFIG_FILES="$CONFIG_FILES src/c++98/Makefile" ;;
"src/c++11/Makefile") CONFIG_FILES="$CONFIG_FILES src/c++11/Makefile" ;;
"src/c++17/Makefile") CONFIG_FILES="$CONFIG_FILES src/c++17/Makefile" ;;
+ "src/c++20/Makefile") CONFIG_FILES="$CONFIG_FILES src/c++20/Makefile" ;;
"src/filesystem/Makefile") CONFIG_FILES="$CONFIG_FILES src/filesystem/Makefile" ;;
"doc/Makefile") CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
"po/Makefile") CONFIG_FILES="$CONFIG_FILES po/Makefile" ;;
@@ -81500,6 +81501,17 @@ _EOF
;;
"src/c++17/Makefile":F) cat > vpsed$$ << \_EOF
s!`test -f '$<' || echo '$(srcdir)/'`!!
+_EOF
+ sed -f vpsed$$ $ac_file > tmp$$
+ mv tmp$$ $ac_file
+ rm vpsed$$
+ echo 'MULTISUBDIR =' >> $ac_file
+ ml_norecursion=yes
+ . ${multi_basedir}/config-ml.in
+ { ml_norecursion=; unset ml_norecursion;}
+ ;;
+ "src/c++20/Makefile":F) cat > vpsed$$ << \_EOF
+s!`test -f '$<' || echo '$(srcdir)/'`!!
_EOF
sed -f vpsed$$ $ac_file > tmp$$
mv tmp$$ $ac_file
diff --git a/libstdc++-v3/include/std/sstream b/libstdc++-v3/include/std/sstream
index 06960e30bf2..f03f3abd6fc 100644
--- a/libstdc++-v3/include/std/sstream
+++ b/libstdc++-v3/include/std/sstream
@@ -165,6 +165,55 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
}
#endif
+#if __cplusplus > 201703L && _GLIBCXX_USE_CXX11_ABI
+ using __sv_type = basic_string_view<char_type, traits_type>;
+
+ basic_stringbuf(const allocator_type& __a)
+ : basic_stringbuf(ios_base::in | std::ios_base::out, __a)
+ { }
+
+ basic_stringbuf(ios_base::openmode __mode,
+ const allocator_type& __a)
+ : __streambuf_type(), _M_mode(__mode), _M_string(__a)
+ { }
+
+ explicit
+ basic_stringbuf(__string_type&& __s,
+ ios_base::openmode __mode = ios_base::in
+ | ios_base::out )
+ : __streambuf_type(), _M_mode(__mode), _M_string(move(__s))
+ { }
+
+ template<typename _SAlloc>
+ basic_stringbuf(const basic_string<_CharT, _Traits, _SAlloc>& __s,
+ const allocator_type& __a )
+ : basic_stringbuf(__s, ios_base::in | std::ios_base::out, __a )
+ { }
+
+ template<typename _SAlloc>
+ basic_stringbuf(const basic_string<_CharT, _Traits, _SAlloc>& __s,
+ ios_base::openmode __mode,
+ const allocator_type& __a)
+ : __streambuf_type(), _M_mode(__mode),
+ _M_string(static_cast<__sv_type>(__s), __a)
+ { }
+
+ template<typename _SAlloc>
+ explicit
+ basic_stringbuf(const basic_string<_CharT, _Traits, _SAlloc>& __s,
+ ios_base::openmode __mode = ios_base::in
+ | ios_base::out)
+ : basic_stringbuf(__s, __mode, allocator_type{})
+ { }
+
+ basic_stringbuf(basic_stringbuf&& __rhs, const allocator_type& __a)
+ : basic_stringbuf(std::move(__rhs), __a, __xfer_bufptrs(__rhs, this))
+ { __rhs._M_sync(const_cast<char_type*>(__rhs._M_string.data()), 0, 0); }
+
+ allocator_type get_allocator() const noexcept
+ { return _M_string.get_allocator(); }
+#endif
+
// Get and set:
/**
* @brief Copying out the string buffer.
@@ -208,6 +257,23 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
_M_stringbuf_init(_M_mode);
}
+#if __cplusplus > 201703L && _GLIBCXX_USE_CXX11_ABI
+ __sv_type
+ view() const noexcept
+ {
+ if (this->pptr())
+ {
+ // The current egptr() may not be the actual string end.
+ if (this->pptr() > this->egptr())
+ return __sv_type(this->pbase(), this->pptr());
+ else
+ return __sv_type(this->pbase(), this->egptr());
+ }
+ else
+ return static_cast<__sv_type>(_M_string);
+ }
+#endif
+
protected:
// Common initialization code goes here.
void
@@ -370,6 +436,16 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
: __streambuf_type(static_cast<const __streambuf_type&>(__rhs)),
_M_mode(__rhs._M_mode), _M_string(std::move(__rhs._M_string))
{ }
+
+#if __cplusplus > 201703L && _GLIBCXX_USE_CXX11_ABI
+ // The move constructor initializes an __xfer_bufptrs temporary then
+ // delegates to this constructor to performs moves during its lifetime.
+ basic_stringbuf(basic_stringbuf&& __rhs, const allocator_type& __a,
+ __xfer_bufptrs&&)
+ : __streambuf_type(static_cast<const __streambuf_type&>(__rhs)),
+ _M_mode(__rhs._M_mode), _M_string(std::move(__rhs._M_string), __a)
+ { }
+#endif
#endif
};
@@ -501,6 +577,40 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
}
#endif
+#if __cplusplus > 201703L && _GLIBCXX_USE_CXX11_ABI
+ basic_istringstream(ios_base::openmode __mode, const allocator_type& __a)
+ : __istream_type(), _M_stringbuf(__mode | ios_base::in, __a)
+ { this->init(std::__addressof(_M_stringbuf)); }
+
+ explicit
+ basic_istringstream(__string_type&& __str,
+ ios_base::openmode __mode = ios_base::in )
+ : __istream_type(), _M_stringbuf(std::move(__str), __mode | ios_base::in)
+ { this->init(std::__addressof(_M_stringbuf)); }
+
+ template<typename _SAlloc>
+ basic_istringstream(const basic_string<_CharT, _Traits, _SAlloc>& __str,
+ const allocator_type& __a)
+ : basic_istringstream(__str, ios_base::in, __a)
+ { }
+
+ template<typename _SAlloc>
+ basic_istringstream(const basic_string<_CharT, _Traits, _SAlloc>& __str,
+ ios_base::openmode __mode,
+ const allocator_type& __a)
+ : __istream_type(),
+ _M_stringbuf(__string_type(__str.data(), __str.size()),
+ __mode | ios_base::in, __a)
+ { this->init(std::__addressof(_M_stringbuf)); }
+
+ template<typename _SAlloc>
+ explicit
+ basic_istringstream(const basic_string<_CharT, _Traits, _SAlloc>& __str,
+ ios_base::openmode __mode = ios_base::in)
+ : basic_istringstream(__str, __mode, allocator_type())
+ { }
+#endif
+
// Members:
/**
* @brief Accessing the underlying buffer.
@@ -529,6 +639,12 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
void
str(const __string_type& __s)
{ _M_stringbuf.str(__s); }
+
+#if __cplusplus > 201703L && _GLIBCXX_USE_CXX11_ABI
+ basic_string_view<char_type, traits_type>
+ view() const noexcept
+ { return _M_stringbuf.view(); }
+#endif
};
@@ -659,6 +775,40 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
}
#endif
+#if __cplusplus > 201703L && _GLIBCXX_USE_CXX11_ABI
+ basic_ostringstream(ios_base::openmode __mode, const allocator_type& __a)
+ : __ostream_type(), _M_stringbuf(__mode | ios_base::out, __a)
+ { this->init(std::__addressof(_M_stringbuf)); }
+
+ explicit
+ basic_ostringstream(__string_type&& __str,
+ ios_base::openmode __mode = ios_base::out )
+ : __ostream_type(), _M_stringbuf(std::move(__str), __mode | ios_base::out)
+ { this->init(std::__addressof(_M_stringbuf)); }
+
+ template<typename _SAlloc>
+ basic_ostringstream(const basic_string<_CharT, _Traits, _SAlloc>& __str,
+ const allocator_type& __a)
+ : basic_ostringstream(__str, ios_base::out, __a)
+ { }
+
+ template<typename _SAlloc>
+ basic_ostringstream(const basic_string<_CharT, _Traits, _SAlloc>& __str,
+ ios_base::openmode __mode,
+ const allocator_type& __a)
+ : __ostream_type(),
+ _M_stringbuf(__string_type(__str.data(), __str.size()),
+ __mode | ios_base::out, __a)
+ { this->init(std::__addressof(_M_stringbuf)); }
+
+ template<typename _SAlloc>
+ explicit
+ basic_ostringstream(const basic_string<_CharT, _Traits, _SAlloc>& __str,
+ ios_base::openmode __mode = ios_base::out)
+ : basic_ostringstream(__str, __mode, allocator_type())
+ { }
+#endif
+
// Members:
/**
* @brief Accessing the underlying buffer.
@@ -687,6 +837,12 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
void
str(const __string_type& __s)
{ _M_stringbuf.str(__s); }
+
+#if __cplusplus > 201703L && _GLIBCXX_USE_CXX11_ABI
+ basic_string_view<char_type, traits_type>
+ view() const noexcept
+ { return _M_stringbuf.view(); }
+#endif
};
@@ -813,6 +969,40 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
}
#endif
+#if __cplusplus > 201703L && _GLIBCXX_USE_CXX11_ABI
+ basic_stringstream(ios_base::openmode __mode, const allocator_type& __a)
+ : __iostream_type(), _M_stringbuf(__mode, __a)
+ { this->init(&_M_stringbuf); }
+
+ explicit
+ basic_stringstream(__string_type&& __str,
+ ios_base::openmode __mode = ios_base::out
+ | ios_base::out)
+ : __iostream_type(), _M_stringbuf(std::move(__str), __mode)
+ { this->init(std::__addressof(_M_stringbuf)); }
+
+ template<typename _SAlloc>
+ basic_stringstream(const basic_string<_CharT, _Traits, _SAlloc>& __str,
+ const allocator_type& __a)
+ : basic_stringstream(__str, ios_base::in | ios_base::out, __a)
+ { }
+
+ template<typename _SAlloc>
+ basic_stringstream(const basic_string<_CharT, _Traits, _SAlloc>& __str,
+ ios_base::openmode __mode, const allocator_type& __a)
+ : __iostream_type(),
+ _M_stringbuf(__string_type(__str.data(), __str.size()), __mode, __a)
+ { this->init(std::__addressof(_M_stringbuf)); }
+
+ template<typename _SAlloc>
+ explicit
+ basic_stringstream(const basic_string<_CharT, _Traits, _SAlloc>& __str,
+ ios_base::openmode __mode = ios_base::in
+ | ios_base::out)
+ : basic_stringstream(__str, __mode, allocator_type())
+ { }
+#endif
+
// Members:
/**
* @brief Accessing the underlying buffer.
@@ -841,6 +1031,12 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
void
str(const __string_type& __s)
{ _M_stringbuf.str(__s); }
+
+#if __cplusplus > 201703L && _GLIBCXX_USE_CXX11_ABI
+ basic_string_view<char_type, traits_type>
+ view() const noexcept
+ { return _M_stringbuf.view(); }
+#endif
};
#if __cplusplus >= 201103L
diff --git a/libstdc++-v3/src/Makefile.am b/libstdc++-v3/src/Makefile.am
index a139adc81b3..9a6807ae8c6 100644
--- a/libstdc++-v3/src/Makefile.am
+++ b/libstdc++-v3/src/Makefile.am
@@ -29,7 +29,7 @@ filesystem_dir =
endif
## Keep this list sync'd with acinclude.m4:GLIBCXX_CONFIGURE.
-SUBDIRS = c++98 c++11 c++17 $(filesystem_dir)
+SUBDIRS = c++98 c++11 c++17 c++20 $(filesystem_dir)
# Cross compiler support.
if VTV_CYGMIN
@@ -60,6 +60,7 @@ endif
vpath % $(top_srcdir)/src/c++98
vpath % $(top_srcdir)/src/c++11
vpath % $(top_srcdir)/src/c++17
+vpath % $(top_srcdir)/src/c++20
if ENABLE_FILESYSTEM_TS
vpath % $(top_srcdir)/src/filesystem
endif
@@ -95,14 +96,16 @@ libstdc___la_LIBADD = \
$(top_builddir)/libsupc++/libsupc++convenience.la \
$(top_builddir)/src/c++98/libc++98convenience.la \
$(top_builddir)/src/c++11/libc++11convenience.la \
- $(top_builddir)/src/c++17/libc++17convenience.la
+ $(top_builddir)/src/c++17/libc++17convenience.la \
+ $(top_builddir)/src/c++20/libc++20convenience.la
libstdc___la_DEPENDENCIES = \
${version_dep} \
$(top_builddir)/libsupc++/libsupc++convenience.la \
$(top_builddir)/src/c++98/libc++98convenience.la \
$(top_builddir)/src/c++11/libc++11convenience.la \
- $(top_builddir)/src/c++17/libc++17convenience.la
+ $(top_builddir)/src/c++17/libc++17convenience.la \
+ $(top_builddir)/src/c++20/libc++20convenience.la
libstdc___la_LDFLAGS = \
-version-info $(libtool_VERSION) ${version_arg} -lm
@@ -153,7 +156,8 @@ compatibility-condvar.o: compatibility-condvar.cc
# segregated in the sources with -D_GLIBCXX_SHARED.
#
# In the sub-directories of libsupc++, src/c++98, src/c++11, src/c++17,
-# only -prefer-pic objects are generated for the convenience libraries.
+# src/c++20, only -prefer-pic objects are generated for the convenience
+# libraries.
#
# In the main src directory, make shared and static objects just for
# the compat libraries. Shared objects are compiled with -prefer-pic
diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in
index 5dc74bb03a3..e51e6164055 100644
--- a/libstdc++-v3/src/Makefile.in
+++ b/libstdc++-v3/src/Makefile.in
@@ -234,7 +234,7 @@ am__define_uniq_tagged_files = \
done | $(am__uniquify_input)`
ETAGS = etags
CTAGS = ctags
-DIST_SUBDIRS = c++98 c++11 c++17 filesystem
+DIST_SUBDIRS = c++98 c++11 c++17 c++20 filesystem
ABI_TWEAKS_SRCDIR = @ABI_TWEAKS_SRCDIR@
ACLOCAL = @ACLOCAL@
ALLOCATOR_H = @ALLOCATOR_H@
@@ -464,7 +464,7 @@ WARN_CXXFLAGS = \
AM_CPPFLAGS = $(GLIBCXX_INCLUDES) $(CPPFLAGS)
@ENABLE_FILESYSTEM_TS_FALSE@filesystem_dir =
@ENABLE_FILESYSTEM_TS_TRUE@filesystem_dir = filesystem
-SUBDIRS = c++98 c++11 c++17 $(filesystem_dir)
+SUBDIRS = c++98 c++11 c++17 c++20 $(filesystem_dir)
@VTV_CYGMIN_FALSE@toolexeclib_LTLIBRARIES = libstdc++.la
# Cross compiler support.
@@ -505,14 +505,16 @@ libstdc___la_LIBADD = \
$(top_builddir)/libsupc++/libsupc++convenience.la \
$(top_builddir)/src/c++98/libc++98convenience.la \
$(top_builddir)/src/c++11/libc++11convenience.la \
- $(top_builddir)/src/c++17/libc++17convenience.la
+ $(top_builddir)/src/c++17/libc++17convenience.la \
+ $(top_builddir)/src/c++20/libc++20convenience.la
libstdc___la_DEPENDENCIES = \
${version_dep} \
$(top_builddir)/libsupc++/libsupc++convenience.la \
$(top_builddir)/src/c++98/libc++98convenience.la \
$(top_builddir)/src/c++11/libc++11convenience.la \
- $(top_builddir)/src/c++17/libc++17convenience.la
+ $(top_builddir)/src/c++17/libc++17convenience.la \
+ $(top_builddir)/src/c++20/libc++20convenience.la
libstdc___la_LDFLAGS = \
-version-info $(libtool_VERSION) ${version_arg} -lm
@@ -528,7 +530,8 @@ libstdc___la_LINK = $(CXXLINK) $(libstdc___la_LDFLAGS)
# segregated in the sources with -D_GLIBCXX_SHARED.
#
# In the sub-directories of libsupc++, src/c++98, src/c++11, src/c++17,
-# only -prefer-pic objects are generated for the convenience libraries.
+# src/c++20, only -prefer-pic objects are generated for the convenience
+# libraries.
#
# In the main src directory, make shared and static objects just for
# the compat libraries. Shared objects are compiled with -prefer-pic
@@ -957,6 +960,7 @@ uninstall-am: uninstall-toolexeclibLTLIBRARIES
vpath % $(top_srcdir)/src/c++98
vpath % $(top_srcdir)/src/c++11
vpath % $(top_srcdir)/src/c++17
+vpath % $(top_srcdir)/src/c++20
@ENABLE_FILESYSTEM_TS_TRUE@vpath % $(top_srcdir)/src/filesystem
# Use special rules for compatibility-ldbl.cc compilation, as we need to
diff --git a/libstdc++-v3/src/c++20/Makefile.am b/libstdc++-v3/src/c++20/Makefile.am
new file mode 100644
index 00000000000..423a79f3686
--- /dev/null
+++ b/libstdc++-v3/src/c++20/Makefile.am
@@ -0,0 +1,105 @@
+## Makefile for the C++20 sources of the GNU C++ Standard library.
+##
+## Copyright (C) 1997-2020 Free Software Foundation, Inc.
+##
+## This file is part of the libstdc++ version 3 distribution.
+## Process this file with automake to produce Makefile.in.
+
+## 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.
+
+## You should have received a copy of the GNU General Public License along
+## with this library; see the file COPYING3. If not see
+## <http://www.gnu.org/licenses/>.
+
+include $(top_srcdir)/fragment.am
+
+# Convenience library for C++17 runtime.
+noinst_LTLIBRARIES = libc++20convenience.la
+
+headers =
+
+if ENABLE_EXTERN_TEMPLATE
+# XTEMPLATE_FLAGS = -fno-implicit-templates
+inst_sources = \
+ sstream-inst.cc
+else
+# XTEMPLATE_FLAGS =
+inst_sources =
+endif
+
+sources =
+
+vpath % $(top_srcdir)/src/c++20
+
+libc__20convenience_la_SOURCES = $(sources) $(inst_sources)
+
+# AM_CXXFLAGS needs to be in each subdirectory so that it can be
+# modified in a per-library or per-sub-library way. Need to manually
+# set this option because CONFIG_CXXFLAGS has to be after
+# OPTIMIZE_CXXFLAGS on the compile line so that -O2 can be overridden
+# as the occasion calls for it.
+AM_CXXFLAGS = \
+ -std=gnu++20 \
+ $(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \
+ $(XTEMPLATE_FLAGS) $(VTV_CXXFLAGS) \
+ $(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS) \
+ -fimplicit-templates
+
+AM_MAKEFLAGS = \
+ "gxx_include_dir=$(gxx_include_dir)"
+
+# Libtool notes
+
+# 1) In general, libtool expects an argument such as `--tag=CXX' when
+# using the C++ compiler, because that will enable the settings
+# detected when C++ support was being configured. However, when no
+# such flag is given in the command line, libtool attempts to figure
+# it out by matching the compiler name in each configuration section
+# against a prefix of the command line. The problem is that, if the
+# compiler name and its initial flags stored in the libtool
+# configuration file don't match those in the command line, libtool
+# can't decide which configuration to use, and it gives up. The
+# correct solution is to add `--tag CXX' to LTCXXCOMPILE and maybe
+# CXXLINK, just after $(LIBTOOL), so that libtool doesn't have to
+# attempt to infer which configuration to use.
+#
+# The second tag argument, `--tag disable-shared` means that libtool
+# only compiles each source once, for static objects. In actuality,
+# glibcxx_lt_pic_flag and glibcxx_compiler_shared_flag are added to
+# the libtool command that is used create the object, which is
+# suitable for shared libraries. The `--tag disable-shared` must be
+# placed after --tag CXX lest things CXX undo the affect of
+# disable-shared.
+
+# 2) Need to explicitly set LTCXXCOMPILE so that EXTRA_CXX_FLAGS is
+# last. (That way, things like -O2 passed down from the toplevel can
+# be overridden by --enable-debug.)
+LTCXXCOMPILE = \
+ $(LIBTOOL) --tag CXX --tag disable-shared \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=compile $(CXX) $(TOPLEVEL_INCLUDES) \
+ $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) $(EXTRA_CXX_FLAGS)
+
+LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS))
+
+# 3) We'd have a problem when building the shared libstdc++ object if
+# the rules automake generates would be used. We cannot allow g++ to
+# be used since this would add -lstdc++ to the link line which of
+# course is problematic at this point. So, we get the top-level
+# directory to configure libstdc++-v3 to use gcc as the C++
+# compilation driver.
+CXXLINK = \
+ $(LIBTOOL) --tag CXX --tag disable-shared \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=link $(CXX) \
+ $(VTV_CXXLINKFLAGS) \
+ $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LTLDFLAGS) -o $@
diff --git a/libstdc++-v3/src/c++20/Makefile.in b/libstdc++-v3/src/c++20/Makefile.in
new file mode 100644
index 00000000000..0e2de19ae59
--- /dev/null
+++ b/libstdc++-v3/src/c++20/Makefile.in
@@ -0,0 +1,735 @@
+# Makefile.in generated by automake 1.15.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2017 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.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+VPATH = @srcdir@
+am__is_gnu_make = { \
+ if test -z '$(MAKELEVEL)'; then \
+ false; \
+ elif test -n '$(MAKE_HOST)'; then \
+ true; \
+ elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \
+ true; \
+ else \
+ false; \
+ fi; \
+}
+am__make_running_with_option = \
+ case $${target_option-} in \
+ ?) ;; \
+ *) echo "am__make_running_with_option: internal error: invalid" \
+ "target option '$${target_option-}' specified" >&2; \
+ exit 1;; \
+ esac; \
+ has_opt=no; \
+ sane_makeflags=$$MAKEFLAGS; \
+ if $(am__is_gnu_make); then \
+ sane_makeflags=$$MFLAGS; \
+ else \
+ case $$MAKEFLAGS in \
+ *\\[\ \ ]*) \
+ bs=\\; \
+ sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \
+ | sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \
+ esac; \
+ fi; \
+ skip_next=no; \
+ strip_trailopt () \
+ { \
+ flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \
+ }; \
+ for flg in $$sane_makeflags; do \
+ test $$skip_next = yes && { skip_next=no; continue; }; \
+ case $$flg in \
+ *=*|--*) continue;; \
+ -*I) strip_trailopt 'I'; skip_next=yes;; \
+ -*I?*) strip_trailopt 'I';; \
+ -*O) strip_trailopt 'O'; skip_next=yes;; \
+ -*O?*) strip_trailopt 'O';; \
+ -*l) strip_trailopt 'l'; skip_next=yes;; \
+ -*l?*) strip_trailopt 'l';; \
+ -[dEDm]) skip_next=yes;; \
+ -[JT]) skip_next=yes;; \
+ esac; \
+ case $$flg in \
+ *$$target_option*) has_opt=yes; break;; \
+ esac; \
+ done; \
+ test $$has_opt = yes
+am__make_dryrun = (target_option=n; $(am__make_running_with_option))
+am__make_keepgoing = (target_option=k; $(am__make_running_with_option))
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+target_triplet = @target@
+subdir = src/c++20
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/../config/acx.m4 \
+ $(top_srcdir)/../config/enable.m4 \
+ $(top_srcdir)/../config/futex.m4 \
+ $(top_srcdir)/../config/hwcaps.m4 \
+ $(top_srcdir)/../config/iconv.m4 \
+ $(top_srcdir)/../config/lead-dot.m4 \
+ $(top_srcdir)/../config/lib-ld.m4 \
+ $(top_srcdir)/../config/lib-link.m4 \
+ $(top_srcdir)/../config/lib-prefix.m4 \
+ $(top_srcdir)/../config/lthostflags.m4 \
+ $(top_srcdir)/../config/multi.m4 \
+ $(top_srcdir)/../config/no-executables.m4 \
+ $(top_srcdir)/../config/override.m4 \
+ $(top_srcdir)/../config/stdint.m4 \
+ $(top_srcdir)/../config/toolexeclibdir.m4 \
+ $(top_srcdir)/../config/unwind_ipinfo.m4 \
+ $(top_srcdir)/../libtool.m4 $(top_srcdir)/../ltoptions.m4 \
+ $(top_srcdir)/../ltsugar.m4 $(top_srcdir)/../ltversion.m4 \
+ $(top_srcdir)/../lt~obsolete.m4 $(top_srcdir)/crossconfig.m4 \
+ $(top_srcdir)/linkage.m4 $(top_srcdir)/acinclude.m4 \
+ $(top_srcdir)/../config/gc++filt.m4 \
+ $(top_srcdir)/../config/tls.m4 $(top_srcdir)/../config/gthr.m4 \
+ $(top_srcdir)/../config/cet.m4 $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+ $(ACLOCAL_M4)
+DIST_COMMON = $(srcdir)/Makefile.am
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES =
+CONFIG_CLEAN_VPATH_FILES =
+LTLIBRARIES = $(noinst_LTLIBRARIES)
+libc__20convenience_la_LIBADD =
+am__objects_1 =
+@ENABLE_EXTERN_TEMPLATE_TRUE@am__objects_2 = sstream-inst.lo
+am_libc__20convenience_la_OBJECTS = $(am__objects_1) $(am__objects_2)
+libc__20convenience_la_OBJECTS = $(am_libc__20convenience_la_OBJECTS)
+AM_V_lt = $(am__v_lt_@AM_V@)
+am__v_lt_ = $(am__v_lt_@AM_DEFAULT_V@)
+am__v_lt_0 = --silent
+am__v_lt_1 =
+AM_V_P = $(am__v_P_@AM_V@)
+am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
+am__v_P_0 = false
+am__v_P_1 = :
+AM_V_GEN = $(am__v_GEN_@AM_V@)
+am__v_GEN_ = $(am__v_GEN_@AM_DEFAULT_V@)
+am__v_GEN_0 = @echo " GEN " $@;
+am__v_GEN_1 =
+AM_V_at = $(am__v_at_@AM_V@)
+am__v_at_ = $(am__v_at_@AM_DEFAULT_V@)
+am__v_at_0 = @
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+toplevel_builddir = @toplevel_builddir@
+toplevel_srcdir = @toplevel_srcdir@
+
+# May be used by various substitution variables.
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+MAINT_CHARSET = latin1
+mkinstalldirs = $(SHELL) $(toplevel_srcdir)/mkinstalldirs
+PWD_COMMAND = $${PWDCMD-pwd}
+STAMP = echo timestamp >
+toolexecdir = $(glibcxx_toolexecdir)
+toolexeclibdir = $(glibcxx_toolexeclibdir)
+@ENABLE_WERROR_FALSE@WERROR_FLAG =
+@ENABLE_WERROR_TRUE@WERROR_FLAG = -Werror
+@ENABLE_EXTERN_TEMPLATE_FALSE@XTEMPLATE_FLAGS =
+@ENABLE_EXTERN_TEMPLATE_TRUE@XTEMPLATE_FLAGS = -fno-implicit-templates
+
+# These bits are all figured out from configure. Look in acinclude.m4
+# or configure.ac to see how they are set. See GLIBCXX_EXPORT_FLAGS.
+CONFIG_CXXFLAGS = \
+ $(SECTION_FLAGS) $(HWCAP_CFLAGS) -frandom-seed=$@
+
+WARN_CXXFLAGS = \
+ $(WARN_FLAGS) $(WERROR_FLAG) -fdiagnostics-show-location=once
+
+
+# -I/-D flags to pass when compiling.
+AM_CPPFLAGS = $(GLIBCXX_INCLUDES) $(CPPFLAGS)
+
+# Convenience library for C++17 runtime.
+noinst_LTLIBRARIES = libc++20convenience.la
+headers =
+# XTEMPLATE_FLAGS =
+@ENABLE_EXTERN_TEMPLATE_FALSE@inst_sources =
+
+# XTEMPLATE_FLAGS = -fno-implicit-templates
+@ENABLE_EXTERN_TEMPLATE_TRUE@inst_sources = \
+@ENABLE_EXTERN_TEMPLATE_TRUE@ sstream-inst.cc
+
+sources =
+libc__20convenience_la_SOURCES = $(sources) $(inst_sources)
+
+# AM_CXXFLAGS needs to be in each subdirectory so that it can be
+# modified in a per-library or per-sub-library way. Need to manually
+# set this option because CONFIG_CXXFLAGS has to be after
+# OPTIMIZE_CXXFLAGS on the compile line so that -O2 can be overridden
+# as the occasion calls for it.
+AM_CXXFLAGS = \
+ -std=gnu++20 \
+ $(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \
+ $(XTEMPLATE_FLAGS) $(VTV_CXXFLAGS) \
+ $(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS) \
+ -fimplicit-templates
+
+AM_MAKEFLAGS = \
+ "gxx_include_dir=$(gxx_include_dir)"
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+
+# Libtool notes
+
+# 1) In general, libtool expects an argument such as `--tag=CXX' when
+# using the C++ compiler, because that will enable the settings
+# detected when C++ support was being configured. However, when no
+# such flag is given in the command line, libtool attempts to figure
+# it out by matching the compiler name in each configuration section
+# against a prefix of the command line. The problem is that, if the
+# compiler name and its initial flags stored in the libtool
+# configuration file don't match those in the command line, libtool
+# can't decide which configuration to use, and it gives up. The
+# correct solution is to add `--tag CXX' to LTCXXCOMPILE and maybe
+# CXXLINK, just after $(LIBTOOL), so that libtool doesn't have to
+# attempt to infer which configuration to use.
+#
+# The second tag argument, `--tag disable-shared` means that libtool
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+# suitable for shared libraries. The `--tag disable-shared` must be
+# placed after --tag CXX lest things CXX undo the affect of
+# disable-shared.
+
+# 2) Need to explicitly set LTCXXCOMPILE so that EXTRA_CXX_FLAGS is
+# last. (That way, things like -O2 passed down from the toplevel can
+# be overridden by --enable-debug.)
+LTCXXCOMPILE = \
+ $(LIBTOOL) --tag CXX --tag disable-shared \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=compile $(CXX) $(TOPLEVEL_INCLUDES) \
+ $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) $(EXTRA_CXX_FLAGS)
+
+LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS))
+
+# 3) We'd have a problem when building the shared libstdc++ object if
+# the rules automake generates would be used. We cannot allow g++ to
+# be used since this would add -lstdc++ to the link line which of
+# course is problematic at this point. So, we get the top-level
+# directory to configure libstdc++-v3 to use gcc as the C++
+# compilation driver.
+CXXLINK = \
+ $(LIBTOOL) --tag CXX --tag disable-shared \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=link $(CXX) \
+ $(VTV_CXXLINKFLAGS) \
+ $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LTLDFLAGS) -o $@
+
+all: all-am
+
+.SUFFIXES:
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+ case '$(am__configure_deps)' in \
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+ exit 1;; \
+ esac; \
+ done; \
+ echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign --ignore-deps src/c++20/Makefile'; \
+ $(am__cd) $(top_srcdir) && \
+ $(AUTOMAKE) --foreign --ignore-deps src/c++20/Makefile
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+ @case '$?' in \
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+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+ *) \
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+ esac;
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+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+ cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+clean-noinstLTLIBRARIES:
+ -test -z "$(noinst_LTLIBRARIES)" || rm -f $(noinst_LTLIBRARIES)
+ @list='$(noinst_LTLIBRARIES)'; \
+ locs=`for p in $$list; do echo $$p; done | \
+ sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+ sort -u`; \
+ test -z "$$locs" || { \
+ echo rm -f $${locs}; \
+ rm -f $${locs}; \
+ }
+
+libc++20convenience.la: $(libc__20convenience_la_OBJECTS) $(libc__20convenience_la_DEPENDENCIES) $(EXTRA_libc__20convenience_la_DEPENDENCIES)
+ $(AM_V_CXXLD)$(CXXLINK) $(libc__20convenience_la_OBJECTS) $(libc__20convenience_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+ -rm -f *.$(OBJEXT)
+
+distclean-compile:
+ -rm -f *.tab.c
+
+.cc.o:
+ $(AM_V_CXX)$(CXXCOMPILE) -c -o $@ $<
+
+.cc.obj:
+ $(AM_V_CXX)$(CXXCOMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.cc.lo:
+ $(AM_V_CXX)$(LTCXXCOMPILE) -c -o $@ $<
+
+mostlyclean-libtool:
+ -rm -f *.lo
+
+clean-libtool:
+ -rm -rf .libs _libs
+
+ID: $(am__tagged_files)
+ $(am__define_uniq_tagged_files); mkid -fID $$unique
+tags: tags-am
+TAGS: tags
+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+ set x; \
+ here=`pwd`; \
+ $(am__define_uniq_tagged_files); \
+ shift; \
+ if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+ test -n "$$unique" || unique=$$empty_fix; \
+ if test $$# -gt 0; then \
+ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+ "$$@" $$unique; \
+ else \
+ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+ $$unique; \
+ fi; \
+ fi
+ctags: ctags-am
+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+ $(am__define_uniq_tagged_files); \
+ test -z "$(CTAGS_ARGS)$$unique" \
+ || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+ $$unique
+
+GTAGS:
+ here=`$(am__cd) $(top_builddir) && pwd` \
+ && $(am__cd) $(top_srcdir) \
+ && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+ list='$(am__tagged_files)'; \
+ case "$(srcdir)" in \
+ [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+ *) sdir=$(subdir)/$(srcdir) ;; \
+ esac; \
+ for i in $$list; do \
+ if test -f "$$i"; then \
+ echo "$(subdir)/$$i"; \
+ else \
+ echo "$$sdir/$$i"; \
+ fi; \
+ done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+ -rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+ @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+ if test -z '$(STRIP)'; then \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ install; \
+ else \
+ $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+ install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+ "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+ fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+ -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+ -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+ @echo "This command is intended for maintainers to use"
+ @echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
+ mostlyclean-am
+
+distclean: distclean-am
+ -rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+ distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
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+info: info-am
+
+info-am:
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+install-data-am:
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+install-dvi: install-dvi-am
+
+install-dvi-am:
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+install-exec-am:
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+install-html: install-html-am
+
+install-html-am:
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+install-info: install-info-am
+
+install-info-am:
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+install-man:
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+install-pdf: install-pdf-am
+
+install-pdf-am:
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+install-ps: install-ps-am
+
+install-ps-am:
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+installcheck-am:
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+maintainer-clean: maintainer-clean-am
+ -rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool
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+pdf: pdf-am
+
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+ps: ps-am
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+ps-am:
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+uninstall-am:
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+.MAKE: install-am install-strip
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+.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
+ clean-libtool clean-noinstLTLIBRARIES cscopelist-am ctags \
+ ctags-am distclean distclean-compile distclean-generic \
+ distclean-libtool distclean-tags dvi dvi-am html html-am info \
+ info-am install install-am install-data install-data-am \
+ install-dvi install-dvi-am install-exec install-exec-am \
+ install-html install-html-am install-info install-info-am \
+ install-man install-pdf install-pdf-am install-ps \
+ install-ps-am install-strip installcheck installcheck-am \
+ installdirs maintainer-clean maintainer-clean-generic \
+ mostlyclean mostlyclean-compile mostlyclean-generic \
+ mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
+ uninstall-am
+
+.PRECIOUS: Makefile
+
+
+vpath % $(top_srcdir)/src/c++20
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libstdc++-v3/src/c++20/sstream-inst.cc b/libstdc++-v3/src/c++20/sstream-inst.cc
new file mode 100644
index 00000000000..e04560d28c8
--- /dev/null
+++ b/libstdc++-v3/src/c++20/sstream-inst.cc
@@ -0,0 +1,108 @@
+// Explicit instantiation file.
+
+// Copyright (C) 2020 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/>.
+
+//
+// ISO C++ 14882:
+//
+
+// Instantiations in this file are only for the new SSO std::string ABI
+#include <sstream>
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+template basic_stringbuf<char>::basic_stringbuf(const allocator_type&);
+template basic_stringbuf<char>::basic_stringbuf(ios_base::openmode,
+ const allocator_type&);
+template basic_stringbuf<char>::basic_stringbuf(__string_type&&,
+ ios_base::openmode);
+template basic_stringbuf<char>::basic_stringbuf(basic_stringbuf&&,
+ const allocator_type&);
+template basic_stringbuf<char>::allocator_type
+basic_stringbuf<char>::get_allocator() const noexcept;
+template basic_stringbuf<char>::__sv_type
+basic_stringbuf<char>::view() const noexcept;
+
+template basic_istringstream<char>::basic_istringstream(ios_base::openmode,
+ const allocator_type&);
+template basic_istringstream<char>::basic_istringstream(__string_type&&,
+ ios_base::openmode);
+template string_view
+basic_istringstream<char>::view() const noexcept;
+
+template basic_ostringstream<char>::basic_ostringstream(ios_base::openmode,
+ const allocator_type&);
+template basic_ostringstream<char>::basic_ostringstream(__string_type&&,
+ ios_base::openmode);
+template string_view
+basic_ostringstream<char>::view() const noexcept;
+
+template basic_stringstream<char>::basic_stringstream(ios_base::openmode,
+ const allocator_type&);
+template basic_stringstream<char>::basic_stringstream(__string_type&&,
+ ios_base::openmode);
+template string_view
+basic_stringstream<char>::view() const noexcept;
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+using wsv_type = basic_string_view<wchar_t>;
+
+template basic_stringbuf<wchar_t>::basic_stringbuf(const allocator_type&);
+template basic_stringbuf<wchar_t>::basic_stringbuf(ios_base::openmode,
+ const allocator_type&);
+template basic_stringbuf<wchar_t>::basic_stringbuf(__string_type&&,
+ ios_base::openmode);
+template basic_stringbuf<wchar_t>::basic_stringbuf(basic_stringbuf&&,
+ const allocator_type&);
+template basic_stringbuf<wchar_t>::allocator_type
+basic_stringbuf<wchar_t>::get_allocator() const noexcept;
+
+template basic_istringstream<wchar_t>::__stringbuf_type::__sv_type
+basic_stringbuf<wchar_t>::view() const noexcept;
+
+template basic_istringstream<wchar_t>::basic_istringstream(ios_base::openmode,
+ const allocator_type&);
+template basic_istringstream<wchar_t>::basic_istringstream(__string_type&&,
+ ios_base::openmode);
+template wstring_view
+basic_istringstream<wchar_t>::view() const noexcept;
+
+template basic_ostringstream<wchar_t>::basic_ostringstream(ios_base::openmode,
+ const allocator_type&);
+template basic_ostringstream<wchar_t>::basic_ostringstream(__string_type&&,
+ ios_base::openmode);
+template wstring_view
+basic_ostringstream<wchar_t>::view() const noexcept;
+
+template basic_stringstream<wchar_t>::basic_stringstream(ios_base::openmode,
+ const allocator_type&);
+template basic_stringstream<wchar_t>::basic_stringstream(__string_type&&,
+ ios_base::openmode);
+template wstring_view
+basic_stringstream<wchar_t>::view() const noexcept;
+#endif
+
+_GLIBCXX_END_NAMESPACE_VERSION
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_istringstream/cons/char/1.cc b/libstdc++-v3/testsuite/27_io/basic_istringstream/cons/char/1.cc
new file mode 100644
index 00000000000..496aa6963e0
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_istringstream/cons/char/1.cc
@@ -0,0 +1,85 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// C++20 29.8.2.2 basic_stringbuf constructors [stringbuf.cons
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string>
+#include <testsuite_allocator.h>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ std::istringstream::allocator_type a;
+ std::istringstream stm(std::ios_base::in, a);
+}
+
+auto const cstr = "This is a test";
+
+void
+test02()
+{
+ std::string s1(cstr);
+ std::istringstream stm(std::move(s1));
+ VERIFY( s1.empty() );
+
+ std::string s2(cstr);
+ VERIFY( stm.str() == s2 );
+}
+
+void
+test03()
+{
+ using alloc_type = __gnu_test::tracker_allocator<char>;
+ using str_type = std::basic_string<char, std::char_traits<char>, alloc_type>;
+
+ auto const mode = std::ios_base::in;
+ str_type s1(cstr);
+
+ {
+ std::istringstream::allocator_type a;
+ std::istringstream sbuf(s1, mode, a);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::istringstream sbuf(s1, mode);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::istringstream sbuf(s1);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_istringstream/cons/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_istringstream/cons/wchar_t/1.cc
new file mode 100644
index 00000000000..26a3a86c46e
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_istringstream/cons/wchar_t/1.cc
@@ -0,0 +1,85 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// C++20 29.8.2.2 basic_stringbuf constructors [stringbuf.cons
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string>
+#include <testsuite_allocator.h>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ std::wistringstream::allocator_type a;
+ std::wistringstream stm(std::ios_base::in, a);
+}
+
+auto const cstr = L"This is a test";
+
+void
+test02()
+{
+ std::wstring s1(cstr);
+ std::wistringstream stm(std::move(s1));
+ VERIFY( s1.empty() );
+
+ std::wstring s2(cstr);
+ VERIFY( stm.str() == s2 );
+}
+
+void
+test03()
+{
+ using alloc_type = __gnu_test::tracker_allocator<wchar_t>;
+ using str_type = std::basic_string<wchar_t, std::char_traits<wchar_t>, alloc_type>;
+
+ auto const mode = std::ios_base::in;
+ str_type s1(cstr);
+
+ {
+ std::wistringstream::allocator_type a;
+ std::wistringstream sbuf(s1, mode, a);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::wistringstream sbuf(s1, mode);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::wistringstream sbuf(s1);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_istringstream/view/char/1.cc b/libstdc++-v3/testsuite/27_io/basic_istringstream/view/char/1.cc
new file mode 100644
index 00000000000..091de5f7a79
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_istringstream/view/char/1.cc
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string_view>
+#include <testsuite_hooks.h>
+
+int
+main()
+{
+ std::string s("This is a test");
+ std::istringstream stm(s);
+ VERIFY( stm.view() == s );
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_istringstream/view/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_istringstream/view/wchar_t/1.cc
new file mode 100644
index 00000000000..f6599643bd9
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_istringstream/view/wchar_t/1.cc
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string_view>
+#include <testsuite_hooks.h>
+
+int
+main()
+{
+ std::wstring s(L"This is a test");
+ std::wistringstream stm(s);
+ VERIFY( stm.view() == s );
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ostringstream/cons/char/1.cc b/libstdc++-v3/testsuite/27_io/basic_ostringstream/cons/char/1.cc
new file mode 100644
index 00000000000..cba69f80931
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ostringstream/cons/char/1.cc
@@ -0,0 +1,85 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// C++20 29.8.2.2 basic_stringbuf constructors [stringbuf.cons
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string>
+#include <testsuite_allocator.h>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ std::ostringstream::allocator_type a;
+ std::ostringstream stm(std::ios_base::in, a);
+}
+
+auto const cstr = "This is a test";
+
+void
+test02()
+{
+ std::string s1(cstr);
+ std::ostringstream stm(std::move(s1));
+ VERIFY( s1.empty() );
+
+ std::string s2(cstr);
+ VERIFY( stm.str() == s2 );
+}
+
+void
+test03()
+{
+ using alloc_type = __gnu_test::tracker_allocator<char>;
+ using str_type = std::basic_string<char, std::char_traits<char>, alloc_type>;
+
+ auto const mode = std::ios_base::out;
+ str_type s1(cstr);
+
+ {
+ std::ostringstream::allocator_type a;
+ std::ostringstream sbuf(s1, mode, a);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::ostringstream sbuf(s1, mode);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::ostringstream sbuf(s1);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ostringstream/cons/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_ostringstream/cons/wchar_t/1.cc
new file mode 100644
index 00000000000..9021186d2c8
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ostringstream/cons/wchar_t/1.cc
@@ -0,0 +1,85 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// C++20 29.8.2.2 basic_stringbuf constructors [stringbuf.cons
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string>
+#include <testsuite_allocator.h>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ std::wostringstream::allocator_type a;
+ std::wostringstream stm(std::ios_base::out, a);
+}
+
+auto const cstr = L"This is a test";
+
+void
+test02()
+{
+ std::wstring s1(cstr);
+ std::wostringstream stm(std::move(s1));
+ VERIFY( s1.empty() );
+
+ std::wstring s2(cstr);
+ VERIFY( stm.str() == s2 );
+}
+
+void
+test03()
+{
+ using alloc_type = __gnu_test::tracker_allocator<wchar_t>;
+ using str_type = std::basic_string<wchar_t, std::char_traits<wchar_t>, alloc_type>;
+
+ auto const mode = std::ios_base::out;
+ str_type s1(cstr);
+
+ {
+ std::wostringstream::allocator_type a;
+ std::wostringstream sbuf(s1, mode, a);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::wostringstream sbuf(s1, mode);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::wostringstream sbuf(s1);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ostringstream/view/char/1.cc b/libstdc++-v3/testsuite/27_io/basic_ostringstream/view/char/1.cc
new file mode 100644
index 00000000000..a366363abb5
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ostringstream/view/char/1.cc
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string_view>
+#include <testsuite_hooks.h>
+
+int
+main()
+{
+ std::string s("This is a test");
+ std::ostringstream stm(s);
+ VERIFY( stm.view() == s );
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc
new file mode 100644
index 00000000000..1ebf7c505e3
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string_view>
+#include <testsuite_hooks.h>
+
+int
+main()
+{
+ std::wstring s(L"This is a test");
+ std::wostringstream stm(s);
+ VERIFY( stm.view() == s );
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/cons/char/2.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/cons/char/2.cc
new file mode 100644
index 00000000000..ce669358c85
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/cons/char/2.cc
@@ -0,0 +1,121 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string>
+#include <testsuite_allocator.h>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ {
+ using alloc_type = __gnu_test::uneq_allocator<char>;
+ using sbuf_t = std::basic_stringbuf<char, std::char_traits<char>,
+ alloc_type>;
+
+ alloc_type aa;
+ sbuf_t sbuf1(aa);
+ VERIFY( aa == sbuf1.get_allocator() );
+
+ alloc_type aaa(42);
+ sbuf_t sbuf2(aaa);
+ VERIFY( aaa == sbuf2.get_allocator() );
+
+ VERIFY( sbuf1.get_allocator() != sbuf2.get_allocator() );
+ }
+
+ std::stringbuf::allocator_type a;
+ {
+ std::stringbuf sbuf(std::ios_base::in, a);
+ }
+
+ {
+ std::stringbuf sbuf(a);
+ }
+}
+
+auto const cstr = "This is a test";
+
+void
+test02()
+{
+ std::string s1(cstr);
+ std::stringbuf sbuf(std::move(s1));
+ VERIFY( s1.empty() );
+
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+}
+
+void
+test03()
+{
+ using alloc_type = __gnu_test::tracker_allocator<char>;
+ using str_type = std::basic_string<char, std::char_traits<char>, alloc_type>;
+
+ auto const mode = std::ios_base::in | std::ios_base::out;
+ str_type s1(cstr);
+
+ {
+ std::stringbuf::allocator_type a;
+ std::stringbuf sbuf(s1, mode, a);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::stringbuf sbuf(s1, mode);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::stringbuf sbuf(s1);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+}
+
+void
+test04()
+{
+ std::stringbuf sbuf1(cstr);
+
+ std::stringbuf::allocator_type a;
+ std::stringbuf sbuf2(std::move(sbuf1), a);
+ VERIFY( sbuf1.str().empty() );
+
+ std::string s(cstr);
+ VERIFY( sbuf2.str() == s );
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ test04();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/cons/wchar_t/2.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/cons/wchar_t/2.cc
new file mode 100644
index 00000000000..e05acc42165
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/cons/wchar_t/2.cc
@@ -0,0 +1,105 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string>
+#include <testsuite_allocator.h>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ std::wstringbuf::allocator_type a;
+ {
+ std::wstringbuf sbuf(std::ios_base::in, a);
+ }
+
+ {
+ std::wstringbuf sbuf(a);
+ }
+}
+
+auto const cstr = L"This is a test";
+
+void
+test02()
+{
+ std::wstring s1(cstr);
+ std::wstringbuf sbuf(std::move(s1));
+ VERIFY( s1.empty() );
+
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+}
+
+void
+test03()
+{
+ using alloc_type = __gnu_test::tracker_allocator<wchar_t>;
+ using str_type = std::basic_string<wchar_t, std::char_traits<wchar_t>, alloc_type>;
+
+ auto const mode = std::ios_base::in | std::ios_base::out;
+ str_type s1(cstr);
+
+ {
+ std::wstringbuf::allocator_type a;
+ std::wstringbuf sbuf(s1, mode, a);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::wstringbuf sbuf(s1, mode);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::wstringbuf sbuf(s1);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+}
+
+void
+test04()
+{
+ std::wstringbuf sbuf1(cstr);
+
+ std::wstringbuf::allocator_type a;
+ std::wstringbuf sbuf2(std::move(sbuf1), a);
+ VERIFY( sbuf1.str().empty() );
+
+ std::wstring s(cstr);
+ VERIFY( sbuf2.str() == s );
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ test04();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/view/char/1.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/view/char/1.cc
new file mode 100644
index 00000000000..8f8c62daa21
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/view/char/1.cc
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string_view>
+#include <testsuite_hooks.h>
+
+int
+main()
+{
+ std::string s("This is a test");
+ std::stringbuf sbuf(s);
+ VERIFY( sbuf.view() == s );
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc
new file mode 100644
index 00000000000..0d23d7d8e66
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string_view>
+#include <testsuite_hooks.h>
+
+int
+main()
+{
+ std::wstring s(L"This is a test");
+ std::wstringbuf sbuf(s);
+ VERIFY( sbuf.view() == s );
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/char/1.cc b/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/char/1.cc
new file mode 100644
index 00000000000..83a3374b3cd
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/char/1.cc
@@ -0,0 +1,85 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// C++20 29.8.2.2 basic_stringbuf constructors [stringbuf.cons
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string>
+#include <testsuite_allocator.h>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ std::stringstream::allocator_type a;
+ std::stringstream stm(std::ios_base::in, a);
+}
+
+auto const cstr = "This is a test";
+
+void
+test02()
+{
+ std::string s1(cstr);
+ std::stringstream stm(std::move(s1));
+ VERIFY( s1.empty() );
+
+ std::string s2(cstr);
+ VERIFY( stm.str() == s2 );
+}
+
+void
+test03()
+{
+ using alloc_type = __gnu_test::tracker_allocator<char>;
+ using str_type = std::basic_string<char, std::char_traits<char>, alloc_type>;
+
+ auto const mode = std::ios_base::in | std::ios_base::out;
+ str_type s1(cstr);
+
+ {
+ std::stringstream::allocator_type a;
+ std::stringstream sbuf(s1, mode, a);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::stringstream sbuf(s1, mode);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::stringstream sbuf(s1);
+ std::string s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/wchar_t/1.cc
new file mode 100644
index 00000000000..26a3a86c46e
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringstream/cons/wchar_t/1.cc
@@ -0,0 +1,85 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// C++20 29.8.2.2 basic_stringbuf constructors [stringbuf.cons
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string>
+#include <testsuite_allocator.h>
+#include <testsuite_hooks.h>
+
+void
+test01()
+{
+ std::wistringstream::allocator_type a;
+ std::wistringstream stm(std::ios_base::in, a);
+}
+
+auto const cstr = L"This is a test";
+
+void
+test02()
+{
+ std::wstring s1(cstr);
+ std::wistringstream stm(std::move(s1));
+ VERIFY( s1.empty() );
+
+ std::wstring s2(cstr);
+ VERIFY( stm.str() == s2 );
+}
+
+void
+test03()
+{
+ using alloc_type = __gnu_test::tracker_allocator<wchar_t>;
+ using str_type = std::basic_string<wchar_t, std::char_traits<wchar_t>, alloc_type>;
+
+ auto const mode = std::ios_base::in;
+ str_type s1(cstr);
+
+ {
+ std::wistringstream::allocator_type a;
+ std::wistringstream sbuf(s1, mode, a);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::wistringstream sbuf(s1, mode);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+
+ {
+ std::wistringstream sbuf(s1);
+ std::wstring s2(cstr);
+ VERIFY( sbuf.str() == s2 );
+ }
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringstream/view/char/1.cc b/libstdc++-v3/testsuite/27_io/basic_stringstream/view/char/1.cc
new file mode 100644
index 00000000000..f47035cf148
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringstream/view/char/1.cc
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string_view>
+#include <testsuite_hooks.h>
+
+int
+main()
+{
+ std::string s("This is a test");
+ std::stringstream stm(s);
+ VERIFY( stm.view() == s );
+ return 0;
+}
diff --git a/libstdc++-v3/testsuite/27_io/basic_stringstream/view/wchar_t/1.cc b/libstdc++-v3/testsuite/27_io/basic_stringstream/view/wchar_t/1.cc
new file mode 100644
index 00000000000..d707cfed243
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/basic_stringstream/view/wchar_t/1.cc
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 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.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// 27.7.1.1 basic_stringbuf constructors [lib.stringbuf.cons]
+
+// { dg-options "-std=gnu++2a" }
+// { dg-do run { target c++2a } }
+// { dg-require-effective-target cxx11-abi }
+
+#include <sstream>
+#include <string_view>
+#include <testsuite_hooks.h>
+
+int
+main()
+{
+ std::wstring s(L"This is a test");
+ std::wstringstream stm(s);
+ VERIFY( stm.view() == s );
+ return 0;
+}
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