gdbsupport: Remove gdb::string_view

Now that all places using gdb::string_view have been updated to use
std::string_view, this patch drops the gdb::string_view implementation
and the tests which came with it.

As this drops the unittests/string_view-selftests.c, this also
implicitly solves PR build/23676, as pointed-out by Tom Tromey.

Change-Id: Idf5479b09e0ac536917b3f0e13aca48424b90df0
Approved-By: Tom Tromey <tom@tromey.com>
Approved-By: Pedro Alves <pedro@palves.net>
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=23676

73 files changed, 0 insertions, 5510 deletions

diff --git a/gdb/unittests/basic_string_view/capacity/1.cc b/gdb/unittests/basic_string_view/capacity/1.cc
deleted file mode 100644
index 12470a9..0000000
--- a/gdb/unittests/basic_string_view/capacity/1.cc
+++ /dev/null
@@ -1,172 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// string_view size, length
-
-namespace capacity_1 {
-
-template<typename T>
-  struct A { };
-
-template<typename T>
-  bool
-  operator==(const A<T>&, const A<T>&) { return true; }
-
-template<typename T>
-  bool
-  operator<(const A<T>&, const A<T>&) { return true; }
-
-struct B { };
-
-} // namespace capacity_1
-} // namespace string_view
-} // namespace selftests
-
-// char_traits specialization
-namespace std
-{
-  template<>
-    struct char_traits<selftests::string_view::capacity_1::A<
-	selftests::string_view::capacity_1::B> >
-    {
-      typedef selftests::string_view::capacity_1::A<
-	  selftests::string_view::capacity_1::B> char_type;
-      // Unsigned as wint_t in unsigned.
-      typedef unsigned long  	int_type;
-      typedef streampos 	pos_type;
-      typedef streamoff 	off_type;
-      typedef mbstate_t 	state_type;
-      
-      static void 
-      assign(char_type& __c1, const char_type& __c2)
-      { __c1 = __c2; }
-
-      static bool 
-      eq(const char_type& __c1, const char_type& __c2)
-      { return __c1 == __c2; }
-
-      static bool 
-      lt(const char_type& __c1, const char_type& __c2)
-      { return __c1 < __c2; }
-
-      static int 
-      compare(const char_type* __s1, const char_type* __s2, size_t __n)
-      { 
-	for (size_t __i = 0; __i < __n; ++__i)
-	  if (!eq(__s1[__i], __s2[__i]))
-	    return lt(__s1[__i], __s2[__i]) ? -1 : 1;
-	return 0; 
-      }
-
-      static size_t
-      length(const char_type* __s)
-      { 
-	const char_type* __p = __s; 
-	while (__p) 
-	  ++__p; 
-	return (__p - __s); 
-      }
-
-      static const char_type* 
-      find(const char_type* __s, size_t __n, const char_type& __a)
-      { 
-	for (const char_type* __p = __s; size_t(__p - __s) < __n; ++__p)
-	  if (*__p == __a) return __p;
-	return 0;
-      }
-
-      static char_type* 
-      move(char_type* __s1, const char_type* __s2, size_t __n)
-      { return (char_type*) memmove(__s1, __s2, __n * sizeof(char_type)); }
-
-      static char_type* 
-      copy(char_type* __s1, const char_type* __s2, size_t __n)
-      { return (char_type*) memcpy(__s1, __s2, __n * sizeof(char_type)); }
-
-      static char_type* 
-      assign(char_type* __s, size_t __n, char_type __a)
-      { 
-	for (char_type* __p = __s; __p < __s + __n; ++__p) 
-	  assign(*__p, __a);
-        return __s; 
-      }
-
-      static char_type 
-      to_char_type(const int_type&)
-      { return char_type(); }
-
-      static int_type 
-      to_int_type(const char_type&) { return int_type(); }
-
-      static bool 
-      eq_int_type(const int_type& __c1, const int_type& __c2)
-      { return __c1 == __c2; }
-
-      static int_type 
-      eof() { return static_cast<int_type>(-1); }
-
-      static int_type 
-      not_eof(const int_type& __c)
-      { return eq_int_type(__c, eof()) ? int_type(0) : __c; }
-    };
-} // namespace std
-
-namespace selftests {
-namespace string_view {
-namespace capacity_1 {
-
-static void
-test01 ()
-{
-  gdb::basic_string_view<A<B>> str02;
-  typedef gdb::basic_string_view< A<B> >::size_type size_type_o;
-  size_type_o sz03;
-  size_type_o sz04;
-
-  // non-POD types: size, length, max_size, empty()
-  bool b01 = str02.empty();  
-  VERIFY( b01 == true );
-  sz03 = str02.size();
-  sz04 = str02.length();
-  VERIFY( sz03 == sz04 );
-  str02.data();
-  sz03 = str02.size();
-  sz04 = str02.length();
-  VERIFY( sz03 == sz04 );
-
-  sz03 = str02.max_size();  
-  VERIFY( sz03 >= sz04 );
-
-  sz03 = str02.size();
-  str02 = {};
-  b01 = str02.empty(); 
-  VERIFY( b01 == true );
-  sz04 = str02.size();  
-  VERIFY( sz03 >= sz04 );
-}
-
-static int
-main()
-{
-  test01();
-
-  return 0;
-}
-
-} // namespace capacity_1
diff --git a/gdb/unittests/basic_string_view/capacity/empty_neg.cc b/gdb/unittests/basic_string_view/capacity/empty_neg.cc
deleted file mode 100644
index 4cb1bea..0000000
--- a/gdb/unittests/basic_string_view/capacity/empty_neg.cc
+++ /dev/null
@@ -1,28 +0,0 @@
-// Copyright (C) 2017-2023 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/>.
-
-// { dg-options "-std=gnu++17" }
-// { dg-do compile { target c++17 } }
-
-#include <string_view>
-
-void
-test01()
-{
-  std::string_view s;
-  s.empty();  // { dg-warning "ignoring return value" }
-}
diff --git a/gdb/unittests/basic_string_view/cons/char/1.cc b/gdb/unittests/basic_string_view/cons/char/1.cc
deleted file mode 100644
index b27f999..0000000
--- a/gdb/unittests/basic_string_view/cons/char/1.cc
+++ /dev/null
@@ -1,67 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view constructors.
-
-namespace cons_1 {
-
-static void
-test01 ()
-{
-  typedef gdb::string_view::size_type csize_type;
-
-  // basic_string_view()
-  const gdb::string_view str00{};
-  VERIFY( str00.length() == 0 );
-  VERIFY( str00.data() == nullptr );
-
-  // basic_string_view(const char*)
-  const char str_lit01[] = "rodeo beach, marin";
-  const gdb::string_view str01{str_lit01};
-  VERIFY( str01.length() == 18 );
-  VERIFY( str01.data() == str_lit01 );
-  const gdb::string_view str02{"baker beach, san francisco"};
-  VERIFY( str02.length() == 26 );
-
-  // basic_string_view(const string_view&)
-  gdb::string_view str04{str01};
-  VERIFY( str04.length() == str01.length() );
-  VERIFY( str04.data() == str01.data() );
-
-  // basic_string_view(const char* s)
-  csize_type len_lit01 = strlen(str_lit01);
-  gdb::string_view str05{str_lit01, len_lit01};
-  VERIFY( str05.length() == len_lit01 );
-  VERIFY( str05.data() == str_lit01 );
-
-  // basic_string_view(basic_string& s)
-  std::string istr07(10, 'z');
-  gdb::string_view str07{istr07};
-  VERIFY( str07.length() == 10 );
-}
-
-static int
-main ()
-{ 
-  test01();
-
-  return 0;
-}
-
-} // namespace cons_1
diff --git a/gdb/unittests/basic_string_view/cons/char/2.cc b/gdb/unittests/basic_string_view/cons/char/2.cc
deleted file mode 100644
index 22a7916..0000000
--- a/gdb/unittests/basic_string_view/cons/char/2.cc
+++ /dev/null
@@ -1,46 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view constructors.
-
-namespace cons_2 {
-
-static void
-test03 ()
-{
-  const char* with_nulls = "This contains \0 a zero byte.";
-
-  // These are tests to see how basic_string_view handles data with NUL
-  // bytes.  Obviously basic_string_view(char*) will halt at the first one, but
-  // nothing else should.
-  gdb::string_view s1(with_nulls, 28);
-  VERIFY( s1.size() == 28 );
-  gdb::string_view s2(s1);
-  VERIFY( s2.size() == 28 );
-}
-
-static int
-main ()
-{ 
-  test03();
-
-  return 0;
-}
-
-} // namespace cons_2
diff --git a/gdb/unittests/basic_string_view/cons/char/3.cc b/gdb/unittests/basic_string_view/cons/char/3.cc
deleted file mode 100644
index ab98b0b..0000000
--- a/gdb/unittests/basic_string_view/cons/char/3.cc
+++ /dev/null
@@ -1,39 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view constructors.
-
-namespace cons_3 {
-
-static void
-test05 ()
-{
-  char const * s = 0;
-  gdb::string_view zero_length_built_with_NULL(s, 0);
-}
-
-static int
-main ()
-{ 
-  test05();
-
-  return 0;
-}
-
-} // namespace cons_3
diff --git a/gdb/unittests/basic_string_view/cons/wchar_t/1.cc b/gdb/unittests/basic_string_view/cons/wchar_t/1.cc
deleted file mode 100644
index 8a1599c..0000000
--- a/gdb/unittests/basic_string_view/cons/wchar_t/1.cc
+++ /dev/null
@@ -1,68 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view constructors.
-
-#include <string_view>
-#include <string>
-#include <cwchar>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  typedef std::wstring_view::size_type csize_type;
-
-  // basic_string_view()
-  const std::wstring_view str00{};
-  VERIFY( str00.length() == 0 );
-  VERIFY( str00.data() == nullptr );
-
-  // basic_string_view(const char*)
-  const wchar_t str_lit01[] = L"rodeo beach, marin";
-  const std::wstring_view str01{str_lit01};
-  VERIFY( str01.length() == 18 );
-  VERIFY( str01.data() == str_lit01 );
-  const std::wstring_view str02{L"baker beach, san francisco"};
-  VERIFY( str02.length() == 26 );
-
-  // basic_string_view(const string_view&)
-  std::wstring_view str04{str01};
-  VERIFY( str04.length() == str01.length() );
-  VERIFY( str04.data() == str01.data() );
-
-  // basic_string_view(const char* s)
-  csize_type len_lit01 = wcslen(str_lit01);
-  std::wstring_view str05{str_lit01, len_lit01};
-  VERIFY( str05.length() == len_lit01 );
-  VERIFY( str05.data() == str_lit01 );
-
-  // basic_string_view(basic_string& s)
-  std::wstring istr07(10, L'z');
-  std::wstring_view str07{istr07};
-  VERIFY( str07.length() == 10 );
-}
-
-int
-main()
-{ 
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/cons/wchar_t/2.cc b/gdb/unittests/basic_string_view/cons/wchar_t/2.cc
deleted file mode 100644
index 54a7fe5..0000000
--- a/gdb/unittests/basic_string_view/cons/wchar_t/2.cc
+++ /dev/null
@@ -1,45 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view constructors.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test03()
-{
-  const wchar_t* with_nulls = L"This contains \0 a zero byte.";
-
-  // These are tests to see how basic_string_view handles data with NUL
-  // bytes.  Obviously basic_string_view(char*) will halt at the first one, but
-  // nothing else should.
-  std::wstring_view s1 (with_nulls, 28);
-  VERIFY( s1.size() == 28 );
-  std::wstring_view s2 (s1);
-  VERIFY( s2.size() == 28 );
-}
-
-int
-main()
-{ 
-  test03();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/cons/wchar_t/3.cc b/gdb/unittests/basic_string_view/cons/wchar_t/3.cc
deleted file mode 100644
index 540683f..0000000
--- a/gdb/unittests/basic_string_view/cons/wchar_t/3.cc
+++ /dev/null
@@ -1,38 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view constructors.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test05()
-{
-  wchar_t const * s = 0;
-  std::wstring_view zero_length_built_with_NULL(s, 0);
-}
-
-int
-main()
-{ 
-  test05();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/element_access/char/1.cc b/gdb/unittests/basic_string_view/element_access/char/1.cc
deleted file mode 100644
index 788d174..0000000
--- a/gdb/unittests/basic_string_view/element_access/char/1.cc
+++ /dev/null
@@ -1,70 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string element access
-
-namespace element_access_1 {
-
-static void
-test01 ()
-{
-  typedef gdb::string_view::size_type csize_type;
-  typedef gdb::string_view::const_reference cref;
-  typedef gdb::string_view::reference ref;
-  csize_type csz01;
-
-  const gdb::string_view str01("tamarindo, costa rica");
-  gdb::string_view str02("41st street beach, capitola, california");
-  gdb::string_view str03;
-
-  // const_reference operator[] (size_type pos) const;
-  csz01 = str01.size();
-  cref cref1 = str01[csz01 - 1];
-  VERIFY( cref1 == 'a' );
-  // Undefined behavior at size().
-  //cref cref2 = str01[csz01];
-  //VERIFY( cref2 == char() );
-
-  // const_reference at(size_type pos) const;
-  csz01 = str01.size();
-  cref cref3 = str01.at(csz01 - 1);
-  VERIFY( cref3 == 'a' );
-  try
-  {
-    str01.at(csz01);
-    VERIFY( false ); // Should not get here, as exception thrown.
-  }
-  catch (gdb_exception& fail)
-  {
-    VERIFY( true );
-  }
-  catch (...)
-  {
-    VERIFY( false );
-  }
-}
-
-static int
-main ()
-{ 
-  test01();
-  return 0;
-}
-
-} // namespace element_access_1
diff --git a/gdb/unittests/basic_string_view/element_access/char/2.cc b/gdb/unittests/basic_string_view/element_access/char/2.cc
deleted file mode 100644
index 938916e..0000000
--- a/gdb/unittests/basic_string_view/element_access/char/2.cc
+++ /dev/null
@@ -1,30 +0,0 @@
-// { dg-do run { xfail *-*-* } }
-// { dg-options "-std=gnu++17 -O0" }
-// { dg-require-debug-mode "" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-
-int
-main()
-{
-  typedef std::string_view string_view_type;
-  string_view_type s;
-  s[0]; // abort
-}
diff --git a/gdb/unittests/basic_string_view/element_access/char/empty.cc b/gdb/unittests/basic_string_view/element_access/char/empty.cc
deleted file mode 100644
index 030c96a..0000000
--- a/gdb/unittests/basic_string_view/element_access/char/empty.cc
+++ /dev/null
@@ -1,39 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-//
-
-namespace element_access_empty {
-
-static int
-main ()
-{
-  {
-    gdb::string_view empty;
-    VERIFY( empty.empty() );
-  }
-
-  {
-    const gdb::string_view empty;
-    VERIFY( empty.empty() );
-  }
-
-  return 0;
-}
-
-} // namespace element_access_empty
diff --git a/gdb/unittests/basic_string_view/element_access/char/front_back.cc b/gdb/unittests/basic_string_view/element_access/char/front_back.cc
deleted file mode 100644
index 7e767fc..0000000
--- a/gdb/unittests/basic_string_view/element_access/char/front_back.cc
+++ /dev/null
@@ -1,43 +0,0 @@
-// { dg-options "-std=gnu++17" }
-// { dg-require-string-conversions "" }
-
-// Copyright (C) 2013-2023 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/>.
-
-namespace element_access_front_back {
-
-static void
-test01 ()
-{
-  gdb::string_view str("ramifications");
-  const gdb::string_view cstr("melodien");
-
-  VERIFY( str.front() == 'r' );
-  VERIFY( str.back() == 's' );
-  VERIFY( cstr.front() == 'm' );
-  VERIFY( cstr.back() == 'n' );
-}
-
-static int
-main ()
-{
-  test01();
-
-  return 0;
-}
-
-} // namespace element_access_front_back
diff --git a/gdb/unittests/basic_string_view/element_access/wchar_t/1.cc b/gdb/unittests/basic_string_view/element_access/wchar_t/1.cc
deleted file mode 100644
index 679772b..0000000
--- a/gdb/unittests/basic_string_view/element_access/wchar_t/1.cc
+++ /dev/null
@@ -1,71 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view element access
-
-#include <string_view>
-#include <stdexcept>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  typedef std::wstring_view::size_type csize_type;
-  typedef std::wstring_view::const_reference cref;
-  typedef std::wstring_view::reference ref;
-  csize_type csz01, csz02;
-
-  const std::wstring_view str01(L"tamarindo, costa rica");
-  std::wstring_view str02(L"41st street beach, capitola, california");
-  std::wstring_view str03;
-
-  // const_reference operator[] (size_type pos) const;
-  csz01 = str01.size();
-  cref cref1 = str01[csz01 - 1];
-  VERIFY( cref1 == L'a' );
-  // Undefined behavior at size().
-  //cref cref2 = str01[csz01];
-  //VERIFY( cref2 == wchar_t() );
-
-  // const_reference at(size_type pos) const;
-  csz01 = str01.size();
-  cref cref3 = str01.at(csz01 - 1);
-  VERIFY( cref3 == L'a' );
-  try
-  {
-    str01.at(csz01);
-    VERIFY( false ); // Should not get here, as exception thrown.
-  }
-  catch (std::out_of_range& fail)
-  {
-    VERIFY( true );
-  }
-  catch (...)
-  {
-    VERIFY( false );
-  }
-}
-
-int
-main()
-{ 
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/element_access/wchar_t/2.cc b/gdb/unittests/basic_string_view/element_access/wchar_t/2.cc
deleted file mode 100644
index cdbc6a5..0000000
--- a/gdb/unittests/basic_string_view/element_access/wchar_t/2.cc
+++ /dev/null
@@ -1,32 +0,0 @@
-// { dg-do run { xfail *-*-* } }
-// { dg-options "-std=gnu++17 -O0" }
-// { dg-require-debug-mode "" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-
-// libstdc++/21674
-// NB: Should work without any inlining or optimizations (ie. -O0).
-int
-main()
-{
-  typedef std::wstring_view string_view_type;
-  string_view_type s;
-  s[0]; // abort
-}
diff --git a/gdb/unittests/basic_string_view/element_access/wchar_t/empty.cc b/gdb/unittests/basic_string_view/element_access/wchar_t/empty.cc
deleted file mode 100644
index f31d34a..0000000
--- a/gdb/unittests/basic_string_view/element_access/wchar_t/empty.cc
+++ /dev/null
@@ -1,38 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-//
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-int
-main()
-{
-  {
-    std::wstring_view empty;
-    VERIFY( empty.empty() );
-  }
-
-  {
-    const std::wstring_view empty;
-    VERIFY( empty.empty() );
-  }
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/element_access/wchar_t/front_back.cc b/gdb/unittests/basic_string_view/element_access/wchar_t/front_back.cc
deleted file mode 100644
index c17a08a..0000000
--- a/gdb/unittests/basic_string_view/element_access/wchar_t/front_back.cc
+++ /dev/null
@@ -1,42 +0,0 @@
-// { dg-options "-std=gnu++17" }
-// { dg-require-string-conversions "" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  std::wstring_view str(L"ramifications");
-  const std::wstring_view cstr(L"melodien");
-
-  VERIFY( str.front() == L'r' );
-  VERIFY( str.back() == L's' );
-  VERIFY( cstr.front() == L'm' );
-  VERIFY( cstr.back() == L'n' );
-}
-
-int
-main()
-{
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/include.cc b/gdb/unittests/basic_string_view/include.cc
deleted file mode 100644
index ef01b7c..0000000
--- a/gdb/unittests/basic_string_view/include.cc
+++ /dev/null
@@ -1,25 +0,0 @@
-// -*- C++ -*-
-
-// Copyright (C) 2013-2023 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/>.
-
-// NB: This issue affected only debug-mode.
-
-// { dg-options "-std=gnu++17 -fno-rtti" }
-// { dg-do compile }
-
-#include <string_view>
diff --git a/gdb/unittests/basic_string_view/inserters/char/1.cc b/gdb/unittests/basic_string_view/inserters/char/1.cc
deleted file mode 100644
index e0a33bf..0000000
--- a/gdb/unittests/basic_string_view/inserters/char/1.cc
+++ /dev/null
@@ -1,65 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// inserters
-
-// NB: This file is predicated on sstreams, istreams, and ostreams
-// working, not to mention other major details like char_traits, and
-// all of the string_view class.
-
-#include <string_view>
-#include <stdexcept>
-#include <sstream>
-#include <fstream>
-#include <iostream>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  typedef std::string_view::size_type csize_type;
-  typedef std::string_view::const_reference cref;
-  typedef std::string_view::reference ref;
-
-  const std::string_view str01("sailing grand traverse bay\n"
-	       "\t\t\t    from Elk Rapids to the point reminds me of miles");
-    
-  // ostream& operator<<(ostream&, const basic_string_view&)
-  std::ostringstream ostrs01;
-  try 
-    {
-      ostrs01 << str01;
-      VERIFY( ostrs01.str() == str01 );
-    }
-  catch(std::exception& fail) 
-    {
-      VERIFY( false );
-    }
-  
-  std::string_view hello_world;
-  std::cout << hello_world;
-}
-
-int
-main()
-{ 
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/inserters/char/2.cc b/gdb/unittests/basic_string_view/inserters/char/2.cc
deleted file mode 100644
index 840f521..0000000
--- a/gdb/unittests/basic_string_view/inserters/char/2.cc
+++ /dev/null
@@ -1,91 +0,0 @@
-
-// Copyright (C) 2013-2023 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/>.
-
-// inserters
-
-// NB: This file is predicated on sstreams, ostreams
-// working, not to mention other major details like char_traits, and
-// all of the string_view class.
-
-// { dg-options "-std=gnu++17" }
-// { dg-require-fileio "" }
-
-namespace inserters_2 {
-
-// testing basic_filebuf::xsputn via stress testing with large string_views
-// based on a bug report libstdc++ 9
-// mode == out
-static void
-test05 (std::size_t size)
-{
-  bool test ATTRIBUTE_UNUSED = true;
-
-  const char filename[] = "inserters_extractors-2.txt";
-  const char fillc = 'f';
-  std::ofstream ofs(filename);
-  std::string str(size, fillc);
-  gdb::string_view strv{str};
-
-  // sanity checks
-  VERIFY( str.size() == size );
-  VERIFY( ofs.good() );
-
-  // stress test
-  ofs << str << std::endl;
-  if (!ofs.good()) 
-    test = false;
-
-  ofs << str << std::endl;
-  if (!ofs.good()) 
-    test = false;
-
-  VERIFY( str.size() == size );
-  VERIFY( ofs.good() );
-
-  ofs.close();
-
-  // sanity check on the written file
-  std::ifstream ifs(filename);
-  std::size_t count = 0;
-  char c;
-  while (count <= (2 * size) + 4)
-    {
-      ifs >> c;
-      if (ifs.good() && c == fillc)
-	{
-	  ++count;
-	  c = '0';
-	}
-      else 
-	break;
-    }
-
-  VERIFY( count == 2 * size );
-}
-
-static int
-main ()
-{
-  test05(1); 
-  test05(1000); 
-  test05(10000);
-
-  return 0;
-}
-
-} // namespace inserters_2
diff --git a/gdb/unittests/basic_string_view/inserters/char/3.cc b/gdb/unittests/basic_string_view/inserters/char/3.cc
deleted file mode 100644
index 43e3ae0..0000000
--- a/gdb/unittests/basic_string_view/inserters/char/3.cc
+++ /dev/null
@@ -1,54 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// inserters
-
-// NB: This file is predicated on sstreams, and ostreams
-// working, not to mention other major details like char_traits, and
-// all of the string_view class.
-
-#include <string_view>
-#include <sstream>
-#include <iomanip>
-#include <testsuite_hooks.h>
-
-// libstdc++/2830
-void
-test09()
-{
-  std::string_view foo{"peace\0\0\0& love"};
-
-  std::ostringstream oss1;
-  oss1 << foo;
-  VERIFY( oss1.str() == foo );
-
-  std::ostringstream oss2;
-  oss2.width(20);
-  oss2 << foo;
-  VERIFY( oss2.str() != foo );
-  VERIFY( oss2.str().size() == 20 );
-}
-
-int
-main()
-{ 
-  test09();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/inserters/pod/10081-out.cc b/gdb/unittests/basic_string_view/inserters/pod/10081-out.cc
deleted file mode 100644
index 4b5d81d..0000000
--- a/gdb/unittests/basic_string_view/inserters/pod/10081-out.cc
+++ /dev/null
@@ -1,75 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// class basic_istream::sentry
-
-#include <string_view>
-#include <ostream>
-#include <sstream>
-#include <locale>
-#include <typeinfo>
-#include <testsuite_hooks.h>
-#include <testsuite_character.h>
-
-void
-test01()
-{
-  using namespace std;
-
-  using __gnu_test::pod_ushort;
-  typedef basic_string_view<pod_ushort> 	string_type;
-  typedef basic_stringbuf<pod_ushort> 	stringbuf_type;
-  typedef basic_ostream<pod_ushort> 	ostream_type;
-
-  string_type str;
-  stringbuf_type strbuf01;
-  ostream_type stream(&strbuf01);
-
-  try
-    {
-      stream << str;
-    }
-  catch (std::bad_cast& obj)
-    {
-      // Ok, throws bad_cast because locale has no ctype facet.
-    }
-  catch (...)
-    {
-      VERIFY( false );
-    }
-
-  const std::locale loc(std::locale::classic(), new std::ctype<pod_ushort>);
-  stream.imbue(loc);
-  try
-    {
-      stream << str;
-    }
-  catch (...)
-    {
-      VERIFY( false );
-    }
-}
-
-int
-main()
-{
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/inserters/wchar_t/1.cc b/gdb/unittests/basic_string_view/inserters/wchar_t/1.cc
deleted file mode 100644
index 6975425..0000000
--- a/gdb/unittests/basic_string_view/inserters/wchar_t/1.cc
+++ /dev/null
@@ -1,70 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// inserters
-
-// NB: This file is predicated on sstreams, and ostreams
-// working, not to mention other major details like char_traits, and
-// all of the string_view class.
-
-#include <string_view>
-#include <stdexcept>
-#include <sstream>
-#include <fstream>
-#include <iostream>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  typedef std::wstring_view::size_type csize_type;
-  typedef std::wstring_view::const_reference cref;
-  typedef std::wstring_view::reference ref;
-
-  const std::wstring_view str01(L"sailing grand traverse bay\n"
-	       L"\t\t\t    from Elk Rapids to the point reminds me of miles");
-  const std::wstring_view str02(L"sailing");
-  const std::wstring_view str03(L"grand");
-  const std::wstring_view str04(L"traverse");
-  const std::wstring_view str05;
-  std::wstring_view str10;
-
-  // ostream& operator<<(ostream&, const basic_string_view&)
-  std::wostringstream ostrs01;
-  try 
-    {
-      ostrs01 << str01;
-      VERIFY( ostrs01.str() == str01 );
-    }
-  catch(std::exception& fail) 
-    {
-      VERIFY( false );
-    }
-  
-  std::wstring_view hello_world;
-  std::wcout << hello_world;
-}
-
-int
-main()
-{ 
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/inserters/wchar_t/2.cc b/gdb/unittests/basic_string_view/inserters/wchar_t/2.cc
deleted file mode 100644
index 5cc3e93..0000000
--- a/gdb/unittests/basic_string_view/inserters/wchar_t/2.cc
+++ /dev/null
@@ -1,91 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// inserters
-
-// NB: This file is predicated on sstreams, istreams, and ostreams
-// working, not to mention other major details like char_traits, and
-// all of the string_view class.
-
-#include <string_view>
-#include <string>
-#include <fstream>
-#include <iostream>
-#include <testsuite_hooks.h>
-
-// testing basic_filebuf::xsputn via stress testing with large string_views
-// based on a bug report libstdc++ 9
-// mode == out
-void
-test05(std::size_t size)
-{
-  bool test = true;
-
-  const char filename[] = "inserters_extractors-2.txt";
-  const wchar_t fillc = L'f';
-  std::wofstream ofs(filename);
-  std::wstring str(size, fillc);
-  std::wstring_view strv(str);
-
-  // sanity checks
-  VERIFY( str.size() == size );
-  VERIFY( ofs.good() );
-
-  // stress test
-  ofs << str << std::endl;
-  if (!ofs.good()) 
-    test = false;
-
-  ofs << str << std::endl;
-  if (!ofs.good()) 
-    test = false;
-
-  VERIFY( str.size() == size );
-  VERIFY( ofs.good() );
-
-  ofs.close();
-
-  // sanity check on the written file
-  std::wifstream ifs(filename);
-  std::size_t count = 0;
-  wchar_t c;
-  while (count <= (2 * size) + 4)
-    {
-      ifs >> c;
-      if (ifs.good() && c == fillc)
-	{
-	  ++count;
-	  c = '0';
-	}
-      else 
-	break;
-    }
-
-  VERIFY( count == 2 * size );
-}
-
-int
-main()
-{
-  test05(1); 
-  test05(1000); 
-  test05(10000);
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/inserters/wchar_t/3.cc b/gdb/unittests/basic_string_view/inserters/wchar_t/3.cc
deleted file mode 100644
index 5eabf46..0000000
--- a/gdb/unittests/basic_string_view/inserters/wchar_t/3.cc
+++ /dev/null
@@ -1,53 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// inserters
-
-// NB: This file is predicated on sstreams, istreams, and ostreams
-// working, not to mention other major details like char_traits, and
-// all of the string_view class.
-
-#include <string_view>
-#include <sstream>
-#include <iomanip>
-#include <testsuite_hooks.h>
-
-void
-test09()
-{
-  std::wstring_view foo{L"peace\0\0\0& love"};
-  
-  std::wostringstream oss1;
-  oss1 << foo;
-  VERIFY( oss1.str() == foo );
-  
-  std::wostringstream oss2;
-  oss2.width(20);
-  oss2 << foo;
-  VERIFY( oss2.str() != foo );
-  VERIFY( oss2.str().size() == 20 );
-}
-
-int
-main()
-{ 
-  test09();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/literals/types.cc b/gdb/unittests/basic_string_view/literals/types.cc
deleted file mode 100644
index de0aa1e..0000000
--- a/gdb/unittests/basic_string_view/literals/types.cc
+++ /dev/null
@@ -1,45 +0,0 @@
-// { dg-options "-std=gnu++17" }
-// { dg-do compile }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-#include <type_traits>
-
-void
-test01()
-{
-  using namespace std::literals::string_view_literals;
-
-  static_assert(std::is_same<decltype("Hello"sv), std::string_view>::value,
-		"\"Hello\"s is std::string_view");
-
-  static_assert(std::is_same<decltype(u8"Hello"sv), std::string_view>::value,
-		"u8\"Hello\"s is std::string_view");
-
-#ifdef _GLIBCXX_USE_WCHAR_T
-  static_assert(std::is_same<decltype(L"Hello"sv), std::wstring_view>::value,
-		"L\"Hello\"s is std::wstring_view");
-#endif
-
-  static_assert(std::is_same<decltype(u"Hello"sv), std::u16string_view>::value,
-		"u\"Hello\"s is std::u16string_view");
-
-  static_assert(std::is_same<decltype(U"Hello"sv), std::u32string_view>::value,
-		"U\"Hello\"s is std::u32string_view");
-}
diff --git a/gdb/unittests/basic_string_view/literals/values.cc b/gdb/unittests/basic_string_view/literals/values.cc
deleted file mode 100644
index ebd69b8..0000000
--- a/gdb/unittests/basic_string_view/literals/values.cc
+++ /dev/null
@@ -1,72 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  using namespace std::literals::string_view_literals;
-
-  std::string_view planet = "Mercury"sv;
-#ifdef _GLIBCXX_USE_WCHAR_T
-  std::wstring_view wplanet = L"Venus"sv;
-#endif
-  std::string_view u8planet = u8"Mars"sv;
-  std::u16string_view u16planet = u"Jupiter"sv;
-  std::u32string_view u32planet = U"Saturn"sv;
-
-  VERIFY( planet == std::string_view("Mercury") );
-#ifdef _GLIBCXX_USE_WCHAR_T
-  VERIFY( wplanet == std::wstring_view(L"Venus") );
-#endif
-  VERIFY( u8planet == std::string_view(u8"Mars") );
-  VERIFY( u16planet == std::u16string_view(u"Jupiter") );
-  VERIFY( u32planet == std::u32string_view(U"Saturn") );
-}
-
-void
-test02()
-{
-  using namespace std::literals::string_view_literals;
-
-  std::string_view planet_cratered = "Mercury\0cratered"sv;
-#ifdef _GLIBCXX_USE_WCHAR_T
-  std::wstring_view wplanet_cratered = L"Venus\0cratered"sv;
-#endif
-  std::string_view u8planet_cratered = u8"Mars\0cratered"sv;
-  std::u16string_view u16planet_cratered = u"Jupiter\0cratered"sv;
-  std::u32string_view u32planet_cratered = U"Saturn\0cratered"sv;
-
-  VERIFY( planet_cratered == std::string_view("Mercury\0cratered", 16) );
-#ifdef _GLIBCXX_USE_WCHAR_T
-  VERIFY( wplanet_cratered == std::wstring_view(L"Venus\0cratered", 14) );
-#endif
-  VERIFY( u8planet_cratered == std::string_view(u8"Mars\0cratered", 13) );
-  VERIFY( u16planet_cratered == std::u16string_view(u"Jupiter\0cratered", 16) );
-  VERIFY( u32planet_cratered == std::u32string_view(U"Saturn\0cratered", 15) );
-}
-
-int
-main()
-{
-  test01();
-  test02();
-}
diff --git a/gdb/unittests/basic_string_view/modifiers/remove_prefix/char/1.cc b/gdb/unittests/basic_string_view/modifiers/remove_prefix/char/1.cc
deleted file mode 100644
index 4ebf4c0..0000000
--- a/gdb/unittests/basic_string_view/modifiers/remove_prefix/char/1.cc
+++ /dev/null
@@ -1,66 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-namespace modifiers_remove_prefix {
-
-static void
-test01 ()
-{
-  using gdb::string_view;
-
-  string_view str0{"olympus mons"};
-  string_view::pointer p = str0.data();
-  str0.remove_prefix(4);
-  VERIFY( str0.data() == p + 4);
-  VERIFY( str0.length() == 8 );
-  VERIFY( str0 == string_view{"pus mons"} );
-}
-
-#ifndef GDB_STRING_VIEW
-constexpr bool
-test02()
-{
-  using std::string_view;
-
-  string_view str0{"olympus mons"};
-  string_view::pointer p = str0.data();
-  str0.remove_prefix(4);
-  if ( str0.data() != p + 4)
-    return false;
-  if ( str0.length() != 8 )
-    return false;
-  if ( str0 != string_view{"pus mons"} )
-    return false;
-
-  return true;
-}
-#endif
-
-static int
-main ()
-{ 
-  test01();
-#ifndef GDB_STRING_VIEW
-  static_assert( test02() );
-#endif
-
-  return 0;
-}
-
-} // namespace modifiers_remove_prefix
diff --git a/gdb/unittests/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc b/gdb/unittests/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc
deleted file mode 100644
index 3503dcb..0000000
--- a/gdb/unittests/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc
+++ /dev/null
@@ -1,61 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  using std::wstring_view;
-
-  wstring_view str0{L"olympus mons"};
-  wstring_view::pointer p = str0.data();
-  str0.remove_prefix(4);
-  VERIFY( str0.data() == p + 4);
-  VERIFY( str0.length() == 8 );
-  VERIFY( str0 == wstring_view{L"pus mons"} );
-}
-
-constexpr bool
-test02()
-{
-  using std::wstring_view;
-
-  wstring_view str0{L"olympus mons"};
-  wstring_view::pointer p = str0.data();
-  str0.remove_prefix(4);
-  if ( str0.data() != p + 4)
-    return false;
-  if ( str0.length() != 8 )
-    return false;
-  if ( str0 != wstring_view{L"pus mons"} )
-    return false;
-
-  return true;
-}
-
-int
-main()
-{ 
-  test01();
-  static_assert( test02() );
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/modifiers/remove_suffix/char/1.cc b/gdb/unittests/basic_string_view/modifiers/remove_suffix/char/1.cc
deleted file mode 100644
index 5e9259e..0000000
--- a/gdb/unittests/basic_string_view/modifiers/remove_suffix/char/1.cc
+++ /dev/null
@@ -1,66 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-namespace modifiers_remove_suffix {
-
-static void
-test01 ()
-{
-  using gdb::string_view;
-
-  string_view str0{"olympus mons"};
-  string_view::pointer p = str0.data();
-  str0.remove_suffix(2);
-  VERIFY( str0.data() == p);
-  VERIFY( str0.length() == 10 );
-  VERIFY( str0 == string_view{"olympus mo"} );
-}
-
-#ifndef GDB_STRING_VIEW
-constexpr bool
-test02()
-{
-  using std::string_view;
-
-  string_view str0{"olympus mons"};
-  string_view::pointer p = str0.data();
-  str0.remove_suffix(2);
-  if ( str0.data() != p)
-    return false;
-  if ( str0.length() != 10 )
-    return false;
-  if ( str0 != string_view{"olympus mo"} )
-    return false;
-
-  return true;
-}
-#endif
-
-static int
-main ()
-{ 
-  test01();
-#ifndef GDB_STRING_VIEW
-  static_assert( test02() );
-#endif
-
-  return 0;
-}
-
-} // namespace modifiers_remove_suffix
diff --git a/gdb/unittests/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc b/gdb/unittests/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc
deleted file mode 100644
index 7f9e051..0000000
--- a/gdb/unittests/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc
+++ /dev/null
@@ -1,61 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  using std::wstring_view;
-
-  wstring_view str0{L"olympus mons"};
-  wstring_view::pointer p = str0.data();
-  str0.remove_suffix(2);
-  VERIFY( str0.data() == p);
-  VERIFY( str0.length() == 10 );
-  VERIFY( str0 == wstring_view{L"olympus mo"} );
-}
-
-constexpr bool
-test02()
-{
-  using std::wstring_view;
-
-  wstring_view str0{L"olympus mons"};
-  wstring_view::pointer p = str0.data();
-  str0.remove_suffix(2);
-  if ( str0.data() != p)
-    return false;
-  if ( str0.length() != 10 )
-    return false;
-  if ( str0 != wstring_view{L"olympus mo"} )
-    return false;
-
-  return true;
-}
-
-int
-main()
-{ 
-  test01();
-  static_assert( test02() );
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/modifiers/swap/char/1.cc b/gdb/unittests/basic_string_view/modifiers/swap/char/1.cc
deleted file mode 100644
index d583566..0000000
--- a/gdb/unittests/basic_string_view/modifiers/swap/char/1.cc
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright (C) 2017-2023 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/>.
-
-// { dg-options "-std=gnu++17" }
-// { dg-do compile { target c++17 } }
-
-namespace modifiers_swap {
-
-static void
-test01 ()
-{
-  using gdb::string_view;
-
-  string_view s1{"last"};
-  string_view s2{"first"};
-
-  s1.swap(s2);
-  VERIFY( s1 == "first" );
-  VERIFY( s2 == "last" );
-}
-
-} // namespace modifiers_swap
diff --git a/gdb/unittests/basic_string_view/modifiers/swap/wchar_t/1.cc b/gdb/unittests/basic_string_view/modifiers/swap/wchar_t/1.cc
deleted file mode 100644
index b986088..0000000
--- a/gdb/unittests/basic_string_view/modifiers/swap/wchar_t/1.cc
+++ /dev/null
@@ -1,35 +0,0 @@
-// Copyright (C) 2017-2023 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/>.
-
-// { dg-options "-std=gnu++17" }
-// { dg-do compile { target c++17 } }
-
-#include <string_view>
-
-constexpr bool
-test01()
-{
-  using std::wstring_view;
-
-  wstring_view s1{L"last"};
-  wstring_view s2{L"first"};
-
-  s1.swap(s2);
-  return s1 == L"first" && s2 == L"last";
-}
-
-static_assert( test01() );
diff --git a/gdb/unittests/basic_string_view/operations/compare/char/1.cc b/gdb/unittests/basic_string_view/operations/compare/char/1.cc
deleted file mode 100644
index d824c8e..0000000
--- a/gdb/unittests/basic_string_view/operations/compare/char/1.cc
+++ /dev/null
@@ -1,132 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view::compare
-// int compare(const basic_string_view& str) const;
-// int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
-// int compare(size_type pos1, size_type n1, const basic_string_view& str,
-//             size_type pos2, size_type n2) const;
-// int compare(const charT* s) const;
-// int compare(size_type pos1, size_type n1,
-//             const charT* s, size_type n2 = npos) const;
-
-// NB compare should be thought of as a lexographical compare, ie how
-// things would be sorted in a dictionary.
-
-namespace operations_compare_1 {
-
-enum want_value {lt=0, z=1, gt=2};
-
-int
-test_value(int result, want_value expected);
-
-int
-test_value(int result, want_value expected)
-{
-  bool pass = false;
-
-  switch (expected) {
-  case lt:
-    if (result < 0)
-      pass = true;
-    break;
-  case z:
-    if (!result)
-      pass = true;
-    break;
-  case gt:
-    if (result > 0)
-      pass = true;
-    break;
-  default:
-    pass = false; //should not get here
-  }
-  VERIFY(pass);
-  return 0;
-}
-
-static int
-test01 ()
-{
-  using gdb::string_view;
-
-  string_view 	str_0("costa rica");
-  string_view 	str_1("costa marbella");
-  string_view 	str_2;
-
-  //sanity check
-  test_value(strcmp("costa marbella", "costa rica"), lt);
-  test_value(strcmp("costa rica", "costa rica"), z);
-  test_value(strcmp(str_1.data(), str_0.data()), lt);
-  test_value(strcmp(str_0.data(), str_1.data()), gt);
-  test_value(strncmp(str_1.data(), str_0.data(), 6), z);
-  test_value(strncmp(str_1.data(), str_0.data(), 14), lt);
-  test_value(memcmp(str_1.data(), str_0.data(), 6), z);
-  test_value(memcmp(str_1.data(), str_0.data(), 10), lt);
-  test_value(memcmp("costa marbella", "costa rica", 10), lt);
-
-  // int compare(const basic_string_view& str) const;
-  test_value(str_0.compare(str_1), gt); //because r>m
-  test_value(str_1.compare(str_0), lt); //because m<r
-  str_2 = str_0;
-  test_value(str_2.compare(str_0), z);
-  str_2 = "cost";
-  test_value(str_2.compare(str_0), lt);
-  str_2 = "costa ricans";
-  test_value(str_2.compare(str_0), gt);
-
-  // int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
-  test_value(str_1.compare(0, 6, str_0), lt);
-  str_2 = "cost";
-  test_value(str_1.compare(0, 4, str_2), z);
-  test_value(str_1.compare(0, 5, str_2), gt);
-
-  // int compare(size_type pos1, size_type n1, const basic_string_view& str,
-  //		 size_type pos2, size_type n2) const;
-  test_value(str_1.compare(0, 6, str_0, 0, 6), z);
-  test_value(str_1.compare(0, 7, str_0, 0, 7), lt);
-  test_value(str_0.compare(0, 7, str_1, 0, 7), gt);
-
-  // int compare(const charT* s) const;
-  test_value(str_0.compare("costa marbella"), gt);
-  test_value(str_1.compare("costa rica"), lt);
-  str_2 = str_0;
-  test_value(str_2.compare("costa rica"), z);
-  test_value(str_2.compare("cost"), gt);
-  test_value(str_2.compare("costa ricans"), lt);
-
-  // int compare(size_type pos, size_type n1, const charT* str,
-  //             size_type n2 = npos) const;
-  test_value(str_1.compare(0, 6, "costa rica", 0, 6), z);
-  test_value(str_1.compare(0, 7, "costa rica", 0, 7), lt);
-  test_value(str_0.compare(0, 7, "costa marbella", 0, 7), gt);
-
-  return 0;
-}
-
-
-static int
-main ()
-{
-  test01();
-
-  return 0;
-}
-
-} // namespace operations_compare_1
diff --git a/gdb/unittests/basic_string_view/operations/compare/char/13650.cc b/gdb/unittests/basic_string_view/operations/compare/char/13650.cc
deleted file mode 100644
index cbfe4a0..0000000
--- a/gdb/unittests/basic_string_view/operations/compare/char/13650.cc
+++ /dev/null
@@ -1,50 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view::compare [lib.string_view::compare]
-
-namespace operations_compare_13650 {
-
-// libstdc++/13650
-static void
-test01 ()
-{
-  using gdb::string_view;
-
-  const char lit_01[]{ 'w', 'e', '\0', 'r', 'd' };
-  const char lit_02[]{ 'w', 'e', 'i', '\0', 'd' };
-
-  const char lit_ref_a[]{ 'w', 'e', '\0', 'q', 'd' };
-  const string_view str_a(lit_ref_a, 5);
-  VERIFY( str_a.compare(0, 5, lit_01, 5) < 0 );
-
-  const char lit_ref_b[]{ 'w', 'e', 'i' };
-  const string_view str_b(lit_ref_b, 3);
-  VERIFY( str_b.compare(0, 3, lit_02, 5) < 0 );
-}
-
-static int
-main()
-{
-  test01();
-
-  return 0;
-}
-
-} // namespace operations_compare_13650
diff --git a/gdb/unittests/basic_string_view/operations/compare/char/2.cc b/gdb/unittests/basic_string_view/operations/compare/char/2.cc
deleted file mode 100644
index f0b76af..0000000
--- a/gdb/unittests/basic_string_view/operations/compare/char/2.cc
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright (C) 2017-2023 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/>.
-
-// { dg-options "-std=gnu++17" }
-// { dg-do compile { target c++17 } }
-
-#include <string_view>
-
-constexpr char c1[] = "one";
-constexpr char c2[] = "two";
-
-constexpr std::string_view s1{c1};
-constexpr std::string_view s2{c2};
-
-constexpr int n1 = s1.compare(s1);
-constexpr int n2 = s1.compare(s2);
diff --git a/gdb/unittests/basic_string_view/operations/compare/char/70483.cc b/gdb/unittests/basic_string_view/operations/compare/char/70483.cc
deleted file mode 100644
index 259f95f..0000000
--- a/gdb/unittests/basic_string_view/operations/compare/char/70483.cc
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright (C) 2017-2023 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/>.
-
-// { dg-options "-std=gnu++17" }
-// { dg-do compile { target c++17 } }
-
-#include <string_view>
-
-struct constexpr_char_traits : std::char_traits<char>
-{
-  static constexpr size_t
-  length(const char* val)
-  {
-    size_t res = 0;
-    for (; val[res] != '\0'; ++res)
-      ;
-    return res;
-  }
-
-  static constexpr int
-  compare(const char* lhs, const char* rhs, std::size_t count)
-  {
-    for (size_t pos = 0; pos < count; ++pos)
-    {
-      if (lhs[pos] != rhs[pos])
-        return lhs[pos] - rhs[pos];
-    }
-    return 0;
-  }
-};
-
-using string_view = std::basic_string_view<char, constexpr_char_traits>;
-
-constexpr
-string_view get()
-{
-    string_view res = "x::";
-    string_view start_pattern = "x";
-    res = res.substr(res.find(start_pattern) + start_pattern.size());
-    res = res.substr(0, res.find_first_of(";]"));
-    res = res.substr(res.rfind("::"));
-    return res;
-}
-
-static_assert( get() == get() );
-
-using std::u16string_view;
-
-constexpr
-u16string_view get16()
-{
-    u16string_view res = u"x::";
-    u16string_view start_pattern = u"x";
-    res = res.substr(res.find(start_pattern) + start_pattern.size());
-    res = res.substr(0, res.find_first_of(u";]"));
-    res = res.substr(res.rfind(u"::"));
-    return res;
-}
-
-static_assert( get16() == get16() );
-
-using std::u32string_view;
-
-constexpr
-u32string_view get32()
-{
-    u32string_view res = U"x::";
-    u32string_view start_pattern = U"x";
-    res = res.substr(res.find(start_pattern) + start_pattern.size());
-    res = res.substr(0, res.find_first_of(U";]"));
-    res = res.substr(res.rfind(U"::"));
-    return res;
-}
-
-static_assert( get32() == get32() );
diff --git a/gdb/unittests/basic_string_view/operations/compare/wchar_t/1.cc b/gdb/unittests/basic_string_view/operations/compare/wchar_t/1.cc
deleted file mode 100644
index 8a05a40..0000000
--- a/gdb/unittests/basic_string_view/operations/compare/wchar_t/1.cc
+++ /dev/null
@@ -1,133 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view::compare
-// int compare(const basic_string_view& str) const;
-// int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
-// int compare(size_type pos1, size_type n1, const basic_string_view& str,
-//             size_type pos2, size_type n2) const;
-// int compare(const charT* s) const;
-// int compare(size_type pos1, size_type n1,
-//             const charT* s, size_type n2 = npos) const;
-
-// NB compare should be thought of as a lexographical compare, ie how
-// things would be sorted in a dictionary.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-enum want_value {lt=0, z=1, gt=2};
-
-int
-test_value(int result, want_value expected);
-
-int
-test_value(int result, want_value expected)
-{
-  bool pass = false;
-
-  switch (expected) {
-  case lt:
-    if (result < 0)
-      pass = true;
-    break;
-  case z:
-    if (!result)
-      pass = true;
-    break;
-  case gt:
-    if (result > 0)
-      pass = true;
-    break;
-  default:
-    pass = false; //should not get here
-  }
-
-  VERIFY(pass);
-  return 0;
-}
-
-
-int
-test01()
-{
-  using std::wstring_view;
-
-  wstring_view 	str_0(L"costa rica");
-  wstring_view 	str_1(L"costa marbella");
-  wstring_view 	str_2;
-
-  //sanity check
-  test_value(wcscmp(L"costa marbella", L"costa rica"), lt);
-  test_value(wcscmp(L"costa rica", L"costa rica"), z);
-  test_value(wcscmp(str_1.data(), str_0.data()), lt);
-  test_value(wcscmp(str_0.data(), str_1.data()), gt);
-  test_value(wcsncmp(str_1.data(), str_0.data(), 6), z);
-  test_value(wcsncmp(str_1.data(), str_0.data(), 14), lt);
-  test_value(wmemcmp(str_1.data(), str_0.data(), 6), z);
-  test_value(wmemcmp(str_1.data(), str_0.data(), 14), lt);
-  test_value(wmemcmp(L"costa marbella", L"costa rica", 14), lt);
-
-  // int compare(const basic_string_view& str) const;
-  test_value(str_0.compare(str_1), gt); //because r>m
-  test_value(str_1.compare(str_0), lt); //because m<r
-  str_2 = str_0;
-  test_value(str_2.compare(str_0), z);
-  str_2 = L"cost";
-  test_value(str_2.compare(str_0), lt);
-  str_2 = L"costa ricans";
-  test_value(str_2.compare(str_0), gt);
-
-  // int compare(size_type pos1, size_type n1, const basic_string_view& str) const;
-  test_value(str_1.compare(0, 6, str_0), lt);
-  str_2 = L"cost";
-  test_value(str_1.compare(0, 4, str_2), z);
-  test_value(str_1.compare(0, 5, str_2), gt);
-
-  // int compare(size_type pos1, size_type n1, const basic_string_view& str,
-  //		 size_type pos2, size_type n2) const;
-  test_value(str_1.compare(0, 6, str_0, 0, 6), z);
-  test_value(str_1.compare(0, 7, str_0, 0, 7), lt);
-  test_value(str_0.compare(0, 7, str_1, 0, 7), gt);
-
-  // int compare(const charT* s) const;
-  test_value(str_0.compare(L"costa marbella"), gt);
-  test_value(str_1.compare(L"costa rica"), lt);
-  str_2 = str_0;
-  test_value(str_2.compare(L"costa rica"), z);
-  test_value(str_2.compare(L"cost"), gt);
-  test_value(str_2.compare(L"costa ricans"), lt);
-
-  // int compare(size_type pos, size_type n1, const charT* str,
-  //             size_type n2 = npos) const;
-  test_value(str_1.compare(0, 6, L"costa rica", 0, 6), z);
-  test_value(str_1.compare(0, 7, L"costa rica", 0, 7), lt);
-  test_value(str_0.compare(0, 7, L"costa marbella", 0, 7), gt);
-
-  return 0;
-}
-
-
-int
-main()
-{
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/compare/wchar_t/13650.cc b/gdb/unittests/basic_string_view/operations/compare/wchar_t/13650.cc
deleted file mode 100644
index 86df7d0..0000000
--- a/gdb/unittests/basic_string_view/operations/compare/wchar_t/13650.cc
+++ /dev/null
@@ -1,49 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view::compare [lib.string_view::compare]
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-// libstdc++/13650
-void
-test01()
-{
-  using std::wstring_view;
-
-  const wchar_t lit_01[] = { L'w', L'e', L'\0', L'r', L'd' };
-  const wchar_t lit_02[] = { L'w', L'e', L'i', L'\0', L'd' };
-
-  const wchar_t lit_ref_a[] = { L'w', L'e', L'\0', L'q', L'd' };
-  const wstring_view str_a(lit_ref_a, 5);
-  VERIFY( str_a.compare(0, 5, lit_01, 5) < 0 );
-
-  const wchar_t lit_ref_b[] = { L'w', L'e', L'i' };
-  const wstring_view str_b(lit_ref_b, 3);
-  VERIFY( str_b.compare(0, 3, lit_02, 5) < 0 );
-}
-
-int
-main()
-{
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/compare/wchar_t/2.cc b/gdb/unittests/basic_string_view/operations/compare/wchar_t/2.cc
deleted file mode 100644
index c6b6eb9..0000000
--- a/gdb/unittests/basic_string_view/operations/compare/wchar_t/2.cc
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright (C) 2017-2023 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/>.
-
-// { dg-options "-std=gnu++17" }
-// { dg-do compile { target c++17 } }
-
-#include <string_view>
-
-constexpr wchar_t c1[] = L"one";
-constexpr wchar_t c2[] = L"two";
-
-constexpr std::wstring_view s1{c1};
-constexpr std::wstring_view s2{c2};
-
-constexpr int n1 = s1.compare(s1);
-constexpr int n2 = s1.compare(s2);
diff --git a/gdb/unittests/basic_string_view/operations/copy/char/1.cc b/gdb/unittests/basic_string_view/operations/copy/char/1.cc
deleted file mode 100644
index f124f3a..0000000
--- a/gdb/unittests/basic_string_view/operations/copy/char/1.cc
+++ /dev/null
@@ -1,46 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view::copy
-
-namespace operations_copy_1 {
-
-static void
-test01 ()
-{
-  typedef gdb::string_view::size_type csize_type;
-
-  const char str_lit01[] = "123456789A";
-  const gdb::string_view str01(str_lit01);
-  char buffer[4] = { 0 };
-
-  csize_type len = str01.copy(buffer, sizeof(buffer), 8);
-  VERIFY( 2 == len );
-  VERIFY( '9' == buffer[0] );
-}
-
-static int
-main ()
-{ 
-  test01();
-
-  return 0;
-}
-
-} // namespace operations_copy_1
diff --git a/gdb/unittests/basic_string_view/operations/copy/wchar_t/1.cc b/gdb/unittests/basic_string_view/operations/copy/wchar_t/1.cc
deleted file mode 100644
index 56a4884..0000000
--- a/gdb/unittests/basic_string_view/operations/copy/wchar_t/1.cc
+++ /dev/null
@@ -1,46 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view::copy
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  typedef std::wstring_view::size_type csize_type;
-  csize_type csz01;
-
-  const wchar_t str_lit01[] = L"123456789A";
-  const std::wstring_view str01(str_lit01);
-  wchar_t buffer[4] = { 0 };
-
-  csize_type len = str01.copy(buffer, sizeof(buffer), 8);
-  VERIFY( 2 == len );
-  VERIFY( L'9' == buffer[0] );
-}
-
-int
-main()
-{ 
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/data/char/1.cc b/gdb/unittests/basic_string_view/operations/data/char/1.cc
deleted file mode 100644
index 0309f5f..0000000
--- a/gdb/unittests/basic_string_view/operations/data/char/1.cc
+++ /dev/null
@@ -1,44 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// string_view operations
-
-namespace operations_data_1 {
-
-static int
-test01 ()
-{
-  gdb::string_view empty;
-
-  VERIFY( empty.size() == 0 );
-  const gdb::string_view::value_type* p = empty.data();
-  VERIFY( p == nullptr );
-
-  return 0;
-}
-
-static int
-main ()
-{ 
-  test01();
-
-  return 0;
-}
-
-} // namespace operations_data_1
diff --git a/gdb/unittests/basic_string_view/operations/data/wchar_t/1.cc b/gdb/unittests/basic_string_view/operations/data/wchar_t/1.cc
deleted file mode 100644
index 31c58b6..0000000
--- a/gdb/unittests/basic_string_view/operations/data/wchar_t/1.cc
+++ /dev/null
@@ -1,43 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// string_view operations
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-int
-test01()
-{
-  std::wstring_view empty;
-
-  VERIFY( empty.size() == 0 );
-  const std::wstring_view::value_type* p = empty.data();
-  VERIFY( p == nullptr );
-
-  return 0;
-}
-
-int
-main()
-{ 
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/find/char/1.cc b/gdb/unittests/basic_string_view/operations/find/char/1.cc
deleted file mode 100644
index 79706e0..0000000
--- a/gdb/unittests/basic_string_view/operations/find/char/1.cc
+++ /dev/null
@@ -1,168 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view find
-
-namespace operations_find_1 {
-
-static void
-test01 ()
-{
-  typedef gdb::string_view::size_type csize_type;
-  typedef gdb::string_view::const_reference cref;
-  typedef gdb::string_view::reference ref;
-  csize_type npos = gdb::string_view::npos;
-  csize_type csz01, csz02;
-
-  const char str_lit01[] = "mave";
-  const gdb::string_view str01("mavericks, santa cruz");
-  gdb::string_view str02(str_lit01);
-  gdb::string_view str03("s, s");
-  gdb::string_view str04;
-
-  // size_type find(const string_view&, size_type pos = 0) const;
-  csz01 = str01.find(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str01, 4);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str02, 3);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find(str03, 3);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find(str03, 12);
-  VERIFY( csz01 == npos );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  csz01 = str01.find(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str04, 5);
-  VERIFY( csz01 == 5 );
-  csz01 = str01.find(str04, str01.size());
-  VERIFY( csz01 == str01.size() );
-  csz01 = str01.find(str04, str01.size()+1);
-  VERIFY( csz01 == npos );
-
-  // size_type find(const char* s, size_type pos, size_type n) const;
-  csz01 = str01.find(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str_lit01, 3, 0);
-  VERIFY( csz01 == 3 );
-
-  // size_type find(const char* s, size_type pos = 0) const;
-  csz01 = str01.find(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str_lit01, 3);
-  VERIFY( csz01 == npos );
-
-  // size_type find(char c, size_type pos = 0) const;
-  csz01 = str01.find('z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-  csz01 = str01.find('/');
-  VERIFY( csz01 == npos );
-}
-
-#ifndef GDB_STRING_VIEW
-constexpr bool
-test02()
-{
-  typedef std::string_view::size_type csize_type;
-  typedef std::string_view::const_reference cref;
-  typedef std::string_view::reference ref;
-  csize_type npos = std::string_view::npos;
-  csize_type csz01 = 0, csz02 = 0;
-
-  const char str_lit01[] = "mave";
-  const std::string_view str01("mavericks, santa cruz");
-  std::string_view str02(str_lit01);
-  std::string_view str03("s, s");
-  std::string_view str04;
-
-#undef VERIFY
-#define VERIFY(x) if(!(x)) return false
-
-  // size_type find(const string_view&, size_type pos = 0) const;
-  csz01 = str01.find(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str01, 4);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str02, 3);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find(str03, 3);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find(str03, 12);
-  VERIFY( csz01 == npos );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  csz01 = str01.find(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str04, 5);
-  VERIFY( csz01 == 5 );
-  csz01 = str01.find(str04, str01.size());
-  VERIFY( csz01 == str01.size() );
-  csz01 = str01.find(str04, str01.size()+1);
-  VERIFY( csz01 == npos );
-
-  // size_type find(const char* s, size_type pos, size_type n) const;
-  csz01 = str01.find(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str_lit01, 3, 0);
-  VERIFY( csz01 == 3 );
-
-  // size_type find(const char* s, size_type pos = 0) const;
-  csz01 = str01.find(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str_lit01, 3);
-  VERIFY( csz01 == npos );
-
-  // size_type find(char c, size_type pos = 0) const;
-  csz01 = str01.find('z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-  csz01 = str01.find('/');
-  VERIFY( csz01 == npos );
-
-  return true;
-}
-#endif
-
-static int
-main ()
-{
-  test01();
-#ifndef GDB_STRING_VIEW
-  static_assert( test02() );
-#endif
-
-  return 0;
-}
-
-} // namespace operations_find_1
diff --git a/gdb/unittests/basic_string_view/operations/find/char/2.cc b/gdb/unittests/basic_string_view/operations/find/char/2.cc
deleted file mode 100644
index c6bb97f..0000000
--- a/gdb/unittests/basic_string_view/operations/find/char/2.cc
+++ /dev/null
@@ -1,166 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view find_first_of
-
-namespace operations_find_2 {
-
-static void
-test02 ()
-{
-  typedef gdb::string_view::size_type csize_type;
-  csize_type npos = gdb::string_view::npos;
-  csize_type csz01, csz02;
-
-  const char str_lit01[] = "mave";
-  const gdb::string_view str01("mavericks, santa cruz");
-  gdb::string_view str02(str_lit01);
-  gdb::string_view str03("s, s");
-  gdb::string_view str04;
-
-  // size_type find_first_of(const string_view&, size_type pos = 0) const;
-  gdb::string_view str05("xena rulez");
-  csz01 = str01.find_first_of(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str01, 4);
-  VERIFY( csz01 == 4 );
-  csz01 = str01.find_first_of(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str02, 3);
-  VERIFY( csz01 == 3 );
-  csz01 = str01.find_first_of(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_of(str03, 3);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_of(str03, 12);
-  VERIFY( csz01 == 16 );
-  csz01 = str01.find_first_of(str05, 0);
-  VERIFY( csz01 == 1 );
-  csz01 = str01.find_first_of(str05, 4);
-  VERIFY( csz01 == 4 );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  // However, str1.find_first_of(str2,pos) finds the first character in
-  // str1 (starting at pos) that exists in str2, which is none for empty str2
-  csz01 = str01.find_first_of(str04, 0);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_of(str04, 5);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_of(const char* s, size_type pos, size_type n) const;
-  csz01 = str01.find_first_of(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str_lit01, 3, 0);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_of(const char* s, size_type pos = 0) const;
-  csz01 = str01.find_first_of(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str_lit01, 3);
-  VERIFY( csz01 == 3 );
-
-  // size_type find_first_of(char c, size_type pos = 0) const;
-  csz01 = str01.find_first_of('z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-}
-
-#ifndef GDB_STRING_VIEW
-constexpr bool
-test03()
-{
-  typedef std::string_view::size_type csize_type;
-  csize_type npos = std::string_view::npos;
-  csize_type csz01 = 0, csz02 = 0;
-
-  const char str_lit01[] = "mave";
-  const std::string_view str01("mavericks, santa cruz");
-  std::string_view str02(str_lit01);
-  std::string_view str03("s, s");
-  std::string_view str04;
-
-#undef VERIFY
-#define VERIFY(x) if(!(x)) return false
-
-  // size_type find_first_of(const string_view&, size_type pos = 0) const;
-  std::string_view str05("xena rulez");
-  csz01 = str01.find_first_of(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str01, 4);
-  VERIFY( csz01 == 4 );
-  csz01 = str01.find_first_of(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str02, 3);
-  VERIFY( csz01 == 3 );
-  csz01 = str01.find_first_of(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_of(str03, 3);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_of(str03, 12);
-  VERIFY( csz01 == 16 );
-  csz01 = str01.find_first_of(str05, 0);
-  VERIFY( csz01 == 1 );
-  csz01 = str01.find_first_of(str05, 4);
-  VERIFY( csz01 == 4 );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  // However, str1.find_first_of(str2,pos) finds the first character in
-  // str1 (starting at pos) that exists in str2, which is none for empty str2
-  csz01 = str01.find_first_of(str04, 0);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_of(str04, 5);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_of(const char* s, size_type pos, size_type n) const;
-  csz01 = str01.find_first_of(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str_lit01, 3, 0);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_of(const char* s, size_type pos = 0) const;
-  csz01 = str01.find_first_of(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str_lit01, 3);
-  VERIFY( csz01 == 3 );
-
-  // size_type find_first_of(char c, size_type pos = 0) const;
-  csz01 = str01.find_first_of('z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-
-  return true;
-}
-#endif
-
-static int
-main ()
-{
-  test02();
-#ifndef GDB_STRING_VIEW
-  static_assert( test03() );
-#endif
-
-  return 0;
-}
-
-} // namespace operations_find_2 {
diff --git a/gdb/unittests/basic_string_view/operations/find/char/3.cc b/gdb/unittests/basic_string_view/operations/find/char/3.cc
deleted file mode 100644
index 078fda3..0000000
--- a/gdb/unittests/basic_string_view/operations/find/char/3.cc
+++ /dev/null
@@ -1,166 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view find_first_not_of
-
-namespace operations_find_3 {
-
-static void
-test03 ()
-{
-  typedef gdb::string_view::size_type csize_type;
-  csize_type npos = gdb::string_view::npos;
-  csize_type csz01;
-
-  const gdb::string_view str01("Bob Rock, per me");
-  const char str_lit01[] = "Bob Rock";
-  gdb::string_view str02("ovvero Trivi");
-  gdb::string_view str03(str_lit01);
-  gdb::string_view str04;
-
-  // size_type find_first_not_of(const string_view&, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(str01);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_not_of(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str02, 10);
-  VERIFY( csz01 == 10 );
-  csz01 = str01.find_first_not_of(str02, 12);
-  VERIFY( csz01 == 14 );
-  csz01 = str01.find_first_not_of(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_not_of(str03, 15);
-  VERIFY( csz01 == 15 );
-  csz01 = str01.find_first_not_of(str03, 16);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_not_of(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str04, 12);
-  VERIFY( csz01 == 12 );
-  csz01 = str03.find_first_not_of(str01, 0);
-  VERIFY( csz01 == npos );
-  csz01 = str04.find_first_not_of(str02, 0);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_not_of(const char* s, size_type pos, size_type n) const;
-  csz01 = str01.find_first_not_of(str_lit01, 0, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str_lit01, 0, 8);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_not_of(str_lit01, 10, 0);
-  VERIFY( csz01 == 10 );
-
-  // size_type find_first_not_of(const char* s, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(str_lit01);
-  VERIFY( csz01 == 8 );
-  csz01 = str02.find_first_not_of(str_lit01, 2);
-  VERIFY( csz01 == 2 );
-
-  // size_type find_first_not_of(char c, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of('B');
-  VERIFY( csz01 == 1 );
-  csz01 = str01.find_first_not_of('o', 1);
-  VERIFY( csz01 == 2 );
-  csz01 = str02.find_first_not_of('z');
-  VERIFY( csz01 == 0 );
-  csz01 = str04.find_first_not_of('S');
-  VERIFY( csz01 == npos );
-}
-
-#ifndef GDB_STRING_VIEW
-constexpr bool
-test04()
-{
-  typedef std::string_view::size_type csize_type;
-  csize_type npos = std::string_view::npos;
-  csize_type csz01 = 0;
-
-  const std::string_view str01("Bob Rock, per me");
-  const char str_lit01[] = "Bob Rock";
-  std::string_view str02("ovvero Trivi");
-  std::string_view str03(str_lit01);
-  std::string_view str04;
-
-#undef VERIFY
-#define VERIFY(x) if(!(x)) return false
-
-  // size_type find_first_not_of(const string_view&, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(str01);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_not_of(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str02, 10);
-  VERIFY( csz01 == 10 );
-  csz01 = str01.find_first_not_of(str02, 12);
-  VERIFY( csz01 == 14 );
-  csz01 = str01.find_first_not_of(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_not_of(str03, 15);
-  VERIFY( csz01 == 15 );
-  csz01 = str01.find_first_not_of(str03, 16);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_not_of(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str04, 12);
-  VERIFY( csz01 == 12 );
-  csz01 = str03.find_first_not_of(str01, 0);
-  VERIFY( csz01 == npos );
-  csz01 = str04.find_first_not_of(str02, 0);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_not_of(const char* s, size_type pos, size_type n) const;
-  csz01 = str01.find_first_not_of(str_lit01, 0, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str_lit01, 0, 8);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_not_of(str_lit01, 10, 0);
-  VERIFY( csz01 == 10 );
-
-  // size_type find_first_not_of(const char* s, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(str_lit01);
-  VERIFY( csz01 == 8 );
-  csz01 = str02.find_first_not_of(str_lit01, 2);
-  VERIFY( csz01 == 2 );
-
-  // size_type find_first_not_of(char c, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of('B');
-  VERIFY( csz01 == 1 );
-  csz01 = str01.find_first_not_of('o', 1);
-  VERIFY( csz01 == 2 );
-  csz01 = str02.find_first_not_of('z');
-  VERIFY( csz01 == 0 );
-  csz01 = str04.find_first_not_of('S');
-  VERIFY( csz01 == npos );
-
-  return true;
-}
-#endif
-
-static int
-main ()
-{
-  test03();
-#ifndef GDB_STRING_VIEW
-  static_assert( test04() );
-#endif
-
-  return 0;
-}
-
-} // namespace operations_find_3
diff --git a/gdb/unittests/basic_string_view/operations/find/char/4.cc b/gdb/unittests/basic_string_view/operations/find/char/4.cc
deleted file mode 100644
index 9e19c01..0000000
--- a/gdb/unittests/basic_string_view/operations/find/char/4.cc
+++ /dev/null
@@ -1,45 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view find
-
-namespace operations_find_4 {
-
-// libstdc++/31401
-static void
-test01()
-{
-  typedef gdb::string_view::size_type csize_type;
-  csize_type npos = gdb::string_view::npos;
-
-  gdb::string_view use = "anu";
-  csize_type pos1 = use.find("a", npos);
-
-  VERIFY( pos1 == npos );
-}
-
-static int
-main ()
-{
-  test01();
-
-  return 0;
-}
-
-} // namespace operations_find_4
diff --git a/gdb/unittests/basic_string_view/operations/find/wchar_t/1.cc b/gdb/unittests/basic_string_view/operations/find/wchar_t/1.cc
deleted file mode 100644
index 08e9e72..0000000
--- a/gdb/unittests/basic_string_view/operations/find/wchar_t/1.cc
+++ /dev/null
@@ -1,163 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view find
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  typedef std::wstring_view::size_type csize_type;
-  typedef std::wstring_view::const_reference cref;
-  typedef std::wstring_view::reference ref;
-  csize_type npos = std::wstring_view::npos;
-  csize_type csz01, csz02;
-
-  const wchar_t str_lit01[] = L"mave";
-  const std::wstring_view str01(L"mavericks, santa cruz");
-  std::wstring_view str02(str_lit01);
-  std::wstring_view str03(L"s, s");
-  std::wstring_view str04;
-
-  // size_type find(const wstring_view&, size_type pos = 0) const;
-  csz01 = str01.find(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str01, 4);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str02, 3);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find(str03, 3);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find(str03, 12);
-  VERIFY( csz01 == npos );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  csz01 = str01.find(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str04, 5);
-  VERIFY( csz01 == 5 );
-  csz01 = str01.find(str04, str01.size());
-  VERIFY( csz01 == str01.size() );
-  csz01 = str01.find(str04, str01.size()+1);
-  VERIFY( csz01 == npos );
-
-  // size_type find(const wchar_t* s, size_type pos, size_type n) const;
-  csz01 = str01.find(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str_lit01, 3, 0);
-  VERIFY( csz01 == 3 );
-
-  // size_type find(const wchar_t* s, size_type pos = 0) const;
-  csz01 = str01.find(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str_lit01, 3);
-  VERIFY( csz01 == npos );
-
-  // size_type find(wchar_t c, size_type pos = 0) const;
-  csz01 = str01.find(L'z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-  csz01 = str01.find(L'/');
-  VERIFY( csz01 == npos );
-}
-
-constexpr bool
-test02()
-{
-  typedef std::wstring_view::size_type csize_type;
-  typedef std::wstring_view::const_reference cref;
-  typedef std::wstring_view::reference ref;
-  csize_type npos = std::wstring_view::npos;
-  csize_type csz01 = 0, csz02 = 0;
-
-  const wchar_t str_lit01[] = L"mave";
-  const std::wstring_view str01(L"mavericks, santa cruz");
-  std::wstring_view str02(str_lit01);
-  std::wstring_view str03(L"s, s");
-  std::wstring_view str04;
-
-#undef VERIFY
-#define VERIFY(x) if(!(x)) return false
-
-  // size_type find(const wstring_view&, size_type pos = 0) const;
-  csz01 = str01.find(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str01, 4);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str02, 3);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find(str03, 3);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find(str03, 12);
-  VERIFY( csz01 == npos );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  csz01 = str01.find(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str04, 5);
-  VERIFY( csz01 == 5 );
-  csz01 = str01.find(str04, str01.size());
-  VERIFY( csz01 == str01.size() );
-  csz01 = str01.find(str04, str01.size()+1);
-  VERIFY( csz01 == npos );
-
-  // size_type find(const wchar_t* s, size_type pos, size_type n) const;
-  csz01 = str01.find(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str_lit01, 3, 0);
-  VERIFY( csz01 == 3 );
-
-  // size_type find(const wchar_t* s, size_type pos = 0) const;
-  csz01 = str01.find(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find(str_lit01, 3);
-  VERIFY( csz01 == npos );
-
-  // size_type find(wchar_t c, size_type pos = 0) const;
-  csz01 = str01.find(L'z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-  csz01 = str01.find(L'/');
-  VERIFY( csz01 == npos );
-
-  return true;
-}
-
-int
-main()
-{
-  test01();
-  static_assert( test02() );
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/find/wchar_t/2.cc b/gdb/unittests/basic_string_view/operations/find/wchar_t/2.cc
deleted file mode 100644
index fa38fe8..0000000
--- a/gdb/unittests/basic_string_view/operations/find/wchar_t/2.cc
+++ /dev/null
@@ -1,161 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view find_first_of
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test02()
-{
-  typedef std::wstring_view::size_type csize_type;
-  csize_type npos = std::wstring_view::npos;
-  csize_type csz01, csz02;
-
-  const wchar_t str_lit01[] = L"mave";
-  const std::wstring_view str01(L"mavericks, santa cruz");
-  std::wstring_view str02(str_lit01);
-  std::wstring_view str03(L"s, s");
-  std::wstring_view str04;
-
-  // size_type find_first_of(const wstring_view&, size_type pos = 0) const;
-  std::wstring_view str05(L"xena rulez");
-  csz01 = str01.find_first_of(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str01, 4);
-  VERIFY( csz01 == 4 );
-  csz01 = str01.find_first_of(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str02, 3);
-  VERIFY( csz01 == 3 );
-  csz01 = str01.find_first_of(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_of(str03, 3);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_of(str03, 12);
-  VERIFY( csz01 == 16 );
-  csz01 = str01.find_first_of(str05, 0);
-  VERIFY( csz01 == 1 );
-  csz01 = str01.find_first_of(str05, 4);
-  VERIFY( csz01 == 4 );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  // However, str1.find_first_of(str2,pos) finds the first character in
-  // str1 (starting at pos) that exists in str2, which is none for empty str2
-  csz01 = str01.find_first_of(str04, 0);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_of(str04, 5);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_of(const wchar_t* s, size_type pos, size_type n) const;
-  csz01 = str01.find_first_of(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str_lit01, 3, 0);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_of(const wchar_t* s, size_type pos = 0) const;
-  csz01 = str01.find_first_of(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str_lit01, 3);
-  VERIFY( csz01 == 3 );
-
-  // size_type find_first_of(wchar_t c, size_type pos = 0) const;
-  csz01 = str01.find_first_of(L'z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-}
-
-constexpr bool
-test04()
-{
-  typedef std::wstring_view::size_type csize_type;
-  csize_type npos = std::wstring_view::npos;
-  csize_type csz01 = 0, csz02 = 0;
-
-  const wchar_t str_lit01[] = L"mave";
-  const std::wstring_view str01(L"mavericks, santa cruz");
-  std::wstring_view str02(str_lit01);
-  std::wstring_view str03(L"s, s");
-  std::wstring_view str04;
-
-#undef VERIFY
-#define VERIFY(x) if(!(x)) return false
-
-  // size_type find_first_of(const wstring_view&, size_type pos = 0) const;
-  std::wstring_view str05(L"xena rulez");
-  csz01 = str01.find_first_of(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str01, 4);
-  VERIFY( csz01 == 4 );
-  csz01 = str01.find_first_of(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str02, 3);
-  VERIFY( csz01 == 3 );
-  csz01 = str01.find_first_of(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_of(str03, 3);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_of(str03, 12);
-  VERIFY( csz01 == 16 );
-  csz01 = str01.find_first_of(str05, 0);
-  VERIFY( csz01 == 1 );
-  csz01 = str01.find_first_of(str05, 4);
-  VERIFY( csz01 == 4 );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  // However, str1.find_first_of(str2,pos) finds the first character in
-  // str1 (starting at pos) that exists in str2, which is none for empty str2
-  csz01 = str01.find_first_of(str04, 0);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_of(str04, 5);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_of(const wchar_t* s, size_type pos, size_type n) const;
-  csz01 = str01.find_first_of(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str_lit01, 3, 0);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_of(const wchar_t* s, size_type pos = 0) const;
-  csz01 = str01.find_first_of(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_of(str_lit01, 3);
-  VERIFY( csz01 == 3 );
-
-  // size_type find_first_of(wchar_t c, size_type pos = 0) const;
-  csz01 = str01.find_first_of(L'z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-
-  return true;
-}
-
-int
-main()
-{
-  test02();
-  static_assert( test04() );
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/find/wchar_t/3.cc b/gdb/unittests/basic_string_view/operations/find/wchar_t/3.cc
deleted file mode 100644
index 93a238c..0000000
--- a/gdb/unittests/basic_string_view/operations/find/wchar_t/3.cc
+++ /dev/null
@@ -1,161 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view find_first_not_of
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test03()
-{
-  typedef std::wstring_view::size_type csize_type;
-  csize_type npos = std::wstring_view::npos;
-  csize_type csz01;
-
-  const std::wstring_view str01(L"Bob Rock, per me");
-  const wchar_t str_lit01[] = L"Bob Rock";
-  std::wstring_view str02(L"ovvero Trivi");
-  std::wstring_view str03(str_lit01);
-  std::wstring_view str04;
-
-  // size_type find_first_not_of(const string_view&, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(str01);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_not_of(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str02, 10);
-  VERIFY( csz01 == 10 );
-  csz01 = str01.find_first_not_of(str02, 12);
-  VERIFY( csz01 == 14 );
-  csz01 = str01.find_first_not_of(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_not_of(str03, 15);
-  VERIFY( csz01 == 15 );
-  csz01 = str01.find_first_not_of(str03, 16);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_not_of(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str04, 12);
-  VERIFY( csz01 == 12 );
-  csz01 = str03.find_first_not_of(str01, 0);
-  VERIFY( csz01 == npos );
-  csz01 = str04.find_first_not_of(str02, 0);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_not_of(const char* s, size_type pos, size_type n) const;
-  csz01 = str01.find_first_not_of(str_lit01, 0, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str_lit01, 0, 8);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_not_of(str_lit01, 10, 0);
-  VERIFY( csz01 == 10 );
-
-  // size_type find_first_not_of(const char* s, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(str_lit01);
-  VERIFY( csz01 == 8 );
-  csz01 = str02.find_first_not_of(str_lit01, 2);
-  VERIFY( csz01 == 2 );
-
-  // size_type find_first_not_of(char c, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(L'B');
-  VERIFY( csz01 == 1 );
-  csz01 = str01.find_first_not_of(L'o', 1);
-  VERIFY( csz01 == 2 );
-  csz01 = str02.find_first_not_of(L'z');
-  VERIFY( csz01 == 0 );
-  csz01 = str04.find_first_not_of(L'S');
-  VERIFY( csz01 == npos );
-}
-
-constexpr bool
-test04()
-{
-  typedef std::wstring_view::size_type csize_type;
-  csize_type npos = std::wstring_view::npos;
-  csize_type csz01 = 0;
-
-  const std::wstring_view str01(L"Bob Rock, per me");
-  const wchar_t str_lit01[] = L"Bob Rock";
-  std::wstring_view str02(L"ovvero Trivi");
-  std::wstring_view str03(str_lit01);
-  std::wstring_view str04;
-
-#undef VERIFY
-#define VERIFY(x) if(!(x)) return false
-
-  // size_type find_first_not_of(const string_view&, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(str01);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_not_of(str02, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str02, 10);
-  VERIFY( csz01 == 10 );
-  csz01 = str01.find_first_not_of(str02, 12);
-  VERIFY( csz01 == 14 );
-  csz01 = str01.find_first_not_of(str03, 0);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_not_of(str03, 15);
-  VERIFY( csz01 == 15 );
-  csz01 = str01.find_first_not_of(str03, 16);
-  VERIFY( csz01 == npos );
-  csz01 = str01.find_first_not_of(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str04, 12);
-  VERIFY( csz01 == 12 );
-  csz01 = str03.find_first_not_of(str01, 0);
-  VERIFY( csz01 == npos );
-  csz01 = str04.find_first_not_of(str02, 0);
-  VERIFY( csz01 == npos );
-
-  // size_type find_first_not_of(const char* s, size_type pos, size_type n) const;
-  csz01 = str01.find_first_not_of(str_lit01, 0, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.find_first_not_of(str_lit01, 0, 8);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.find_first_not_of(str_lit01, 10, 0);
-  VERIFY( csz01 == 10 );
-
-  // size_type find_first_not_of(const char* s, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(str_lit01);
-  VERIFY( csz01 == 8 );
-  csz01 = str02.find_first_not_of(str_lit01, 2);
-  VERIFY( csz01 == 2 );
-
-  // size_type find_first_not_of(char c, size_type pos = 0) const;
-  csz01 = str01.find_first_not_of(L'B');
-  VERIFY( csz01 == 1 );
-  csz01 = str01.find_first_not_of(L'o', 1);
-  VERIFY( csz01 == 2 );
-  csz01 = str02.find_first_not_of(L'z');
-  VERIFY( csz01 == 0 );
-  csz01 = str04.find_first_not_of(L'S');
-  VERIFY( csz01 == npos );
-
-  return true;
-}
-
-int
-main()
-{
-  test03();
-  static_assert( test04() );
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/find/wchar_t/4.cc b/gdb/unittests/basic_string_view/operations/find/wchar_t/4.cc
deleted file mode 100644
index 7b484bd..0000000
--- a/gdb/unittests/basic_string_view/operations/find/wchar_t/4.cc
+++ /dev/null
@@ -1,44 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view find
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-// libstdc++/31401
-void
-test01()
-{
-  typedef std::wstring_view::size_type csize_type;
-  csize_type npos = std::wstring_view::npos;
-
-  std::wstring_view use = L"anu";
-  csize_type pos1 = use.find(L"a", npos);
-
-  VERIFY( pos1 == npos );
-}
-
-int
-main()
-{
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/rfind/char/1.cc b/gdb/unittests/basic_string_view/operations/rfind/char/1.cc
deleted file mode 100644
index b764cd9..0000000
--- a/gdb/unittests/basic_string_view/operations/rfind/char/1.cc
+++ /dev/null
@@ -1,95 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-namespace operations_rfind_1 {
-
-// basic_string_view rfind
-
-static void
-test01 ()
-{
-  typedef gdb::string_view::size_type csize_type;
-  typedef gdb::string_view::const_reference cref;
-  typedef gdb::string_view::reference ref;
-  csize_type npos = gdb::string_view::npos;
-  csize_type csz01, csz02;
-
-  const char str_lit01[] = "mave";
-  const gdb::string_view str01("mavericks, santa cruz");
-  gdb::string_view str02(str_lit01);
-  gdb::string_view str03("s, s");
-  gdb::string_view str04;
-
-  // size_type rfind(const string_view&, size_type pos = 0) const;
-  csz01 = str01.rfind(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str01, 4);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str02,3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str02);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str03);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.rfind(str03, 3);
-  VERIFY( csz01 == npos );
-  csz01 = str01.rfind(str03, 12);
-  VERIFY( csz01 == 8 );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  csz01 = str01.rfind(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str04, 5);
-  VERIFY( csz01 == 5 );
-  csz01 = str01.rfind(str04, str01.size());
-  VERIFY( csz01 == str01.size() );
-  csz01 = str01.rfind(str04, str01.size()+1);
-  VERIFY( csz01 == str01.size() );
-
-  // size_type rfind(const char* s, size_type pos, size_type n) const;
-  csz01 = str01.rfind(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str_lit01, 3, 0);
-  VERIFY( csz01 == 3 );
-
-  // size_type rfind(const char* s, size_type pos = 0) const;
-  csz01 = str01.rfind(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str_lit01, 3);
-  VERIFY( csz01 == 0 );
-
-  // size_type rfind(char c, size_type pos = 0) const;
-  csz01 = str01.rfind('z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-  csz01 = str01.rfind('/');
-  VERIFY( csz01 == npos );
-}
-
-static int
-main ()
-{
-  test01();
-
-  return 0;
-}
-
-} // namespace operations_rfind_1
diff --git a/gdb/unittests/basic_string_view/operations/rfind/char/2.cc b/gdb/unittests/basic_string_view/operations/rfind/char/2.cc
deleted file mode 100644
index 915a111..0000000
--- a/gdb/unittests/basic_string_view/operations/rfind/char/2.cc
+++ /dev/null
@@ -1,53 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-namespace operations_rfind_2 {
-
-// basic_string_view::find_last_of
-
-static void
-test02 ()
-{
-  gdb::string_view z("ab");
-  gdb::string_view::size_type pos;
-  pos = z.find_last_of("ab");
-  VERIFY( pos == 1 );
-  pos = z.find_last_of("Xa");
-  VERIFY( pos == 0 );
-  pos = z.find_last_of("Xb");
-  VERIFY( pos == 1 );
-  pos = z.find_last_of("XYZ");
-  VERIFY( pos == gdb::string_view::npos );
-  pos = z.find_last_of('a');
-  VERIFY( pos == 0 );
-  pos = z.find_last_of('b');
-  VERIFY( pos == 1 );
-  pos = z.find_last_of('X');
-  VERIFY( pos == gdb::string_view::npos );
-}
-
-static int
-main ()
-{
-  test02();
-
-  return 0;
-}
-
-} // namespace operations_rfind_2
diff --git a/gdb/unittests/basic_string_view/operations/rfind/char/3.cc b/gdb/unittests/basic_string_view/operations/rfind/char/3.cc
deleted file mode 100644
index a15debf..0000000
--- a/gdb/unittests/basic_string_view/operations/rfind/char/3.cc
+++ /dev/null
@@ -1,68 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-namespace operations_rfind_3 {
-
-// basic_string_view::find_last_not_of
-
-static void
-test03 ()
-{
-  typedef gdb::string_view::size_type csize_type;
-  gdb::string_view::size_type pos;
-  csize_type npos = gdb::string_view::npos;
-
-  gdb::string_view x;
-  pos = x.find_last_not_of('X');
-  VERIFY( pos == npos );
-  pos = x.find_last_not_of("XYZ");
-  VERIFY( pos == npos );
-
-  gdb::string_view y("a");
-  pos = y.find_last_not_of('X');
-  VERIFY( pos == 0 );
-  pos = y.find_last_not_of('a');
-  VERIFY( pos == npos );
-  pos = y.find_last_not_of("XYZ");
-  VERIFY( pos == 0 );
-  pos = y.find_last_not_of("a");
-  VERIFY( pos == npos );
-
-  gdb::string_view z("ab");
-  pos = z.find_last_not_of('X');
-  VERIFY( pos == 1 );
-  pos = z.find_last_not_of("XYZ");
-  VERIFY( pos == 1 );
-  pos = z.find_last_not_of('b');
-  VERIFY( pos == 0 );
-  pos = z.find_last_not_of("Xb");
-  VERIFY( pos == 0 );
-  pos = z.find_last_not_of("Xa");
-  VERIFY( pos == 1 );
-}
-
-static int
-main ()
-{
-  test03();
-
-  return 0;
-}
-
-} // namespace operations_rfind_3
diff --git a/gdb/unittests/basic_string_view/operations/rfind/wchar_t/1.cc b/gdb/unittests/basic_string_view/operations/rfind/wchar_t/1.cc
deleted file mode 100644
index d5ad681..0000000
--- a/gdb/unittests/basic_string_view/operations/rfind/wchar_t/1.cc
+++ /dev/null
@@ -1,94 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-// basic_string_view rfind
-
-void
-test01()
-{
-  typedef std::wstring_view::size_type csize_type;
-  typedef std::wstring_view::const_reference cref;
-  typedef std::wstring_view::reference ref;
-  csize_type npos = std::wstring_view::npos;
-  csize_type csz01, csz02;
-
-  const wchar_t str_lit01[] = L"mave";
-  const std::wstring_view str01(L"mavericks, santa cruz");
-  std::wstring_view str02(str_lit01);
-  std::wstring_view str03(L"s, s");
-  std::wstring_view str04;
-
-  // size_type rfind(const wstring_view&, size_type pos = 0) const;
-  csz01 = str01.rfind(str01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str01, 4);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str02,3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str02);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str03);
-  VERIFY( csz01 == 8 );
-  csz01 = str01.rfind(str03, 3);
-  VERIFY( csz01 == npos );
-  csz01 = str01.rfind(str03, 12);
-  VERIFY( csz01 == 8 );
-
-  // An empty string_view consists of no characters
-  // therefore it should be found at every point in a string_view,
-  // except beyond the end
-  csz01 = str01.rfind(str04, 0);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str04, 5);
-  VERIFY( csz01 == 5 );
-  csz01 = str01.rfind(str04, str01.size());
-  VERIFY( csz01 == str01.size() );
-  csz01 = str01.rfind(str04, str01.size()+1);
-  VERIFY( csz01 == str01.size() );
-
-  // size_type rfind(const wchar_t* s, size_type pos, size_type n) const;
-  csz01 = str01.rfind(str_lit01, 0, 3);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str_lit01, 3, 0);
-  VERIFY( csz01 == 3 );
-
-  // size_type rfind(const wchar_t* s, size_type pos = 0) const;
-  csz01 = str01.rfind(str_lit01);
-  VERIFY( csz01 == 0 );
-  csz01 = str01.rfind(str_lit01, 3);
-  VERIFY( csz01 == 0 );
-
-  // size_type rfind(wchar_t c, size_type pos = 0) const;
-  csz01 = str01.rfind(L'z');
-  csz02 = str01.size() - 1;
-  VERIFY( csz01 == csz02 );
-  csz01 = str01.rfind(L'/');
-  VERIFY( csz01 == npos );
-}
-
-int
-main()
-{
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/rfind/wchar_t/2.cc b/gdb/unittests/basic_string_view/operations/rfind/wchar_t/2.cc
deleted file mode 100644
index 6f3dc74..0000000
--- a/gdb/unittests/basic_string_view/operations/rfind/wchar_t/2.cc
+++ /dev/null
@@ -1,52 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-// basic_string_view::find_last_of
-
-void
-test02()
-{
-  std::wstring_view::size_type pos;
-  std::wstring_view z(L"ab");
-  pos = z.find_last_of(L"ab");
-  VERIFY( pos == 1 );
-  pos = z.find_last_of(L"Xa");
-  VERIFY( pos == 0 );
-  pos = z.find_last_of(L"Xb");
-  VERIFY( pos == 1 );
-  pos = z.find_last_of(L"XYZ");
-  VERIFY( pos == std::wstring_view::npos );
-  pos = z.find_last_of(L'a');
-  VERIFY( pos == 0 );
-  pos = z.find_last_of(L'b');
-  VERIFY( pos == 1 );
-  pos = z.find_last_of(L'X');
-  VERIFY( pos == std::wstring_view::npos );
-}
-
-int
-main()
-{
-  test02();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/rfind/wchar_t/3.cc b/gdb/unittests/basic_string_view/operations/rfind/wchar_t/3.cc
deleted file mode 100644
index b67f8ec..0000000
--- a/gdb/unittests/basic_string_view/operations/rfind/wchar_t/3.cc
+++ /dev/null
@@ -1,66 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-// basic_string_view::find_last_not_of
-
-void
-test03()
-{
-  typedef std::wstring_view::size_type csize_type;
-  std::wstring_view::size_type pos;
-  csize_type npos = std::wstring_view::npos;
-
-  std::wstring_view x;
-  pos = x.find_last_not_of(L'X');
-  VERIFY( pos == npos );
-  pos = x.find_last_not_of(L"XYZ");
-  VERIFY( pos == npos );
-
-  std::wstring_view y(L"a");
-  pos = y.find_last_not_of(L'X');
-  VERIFY( pos == 0 );
-  pos = y.find_last_not_of(L'a');
-  VERIFY( pos == npos );
-  pos = y.find_last_not_of(L"XYZ");
-  VERIFY( pos == 0 );
-  pos = y.find_last_not_of(L"a");
-  VERIFY( pos == npos );
-
-  std::wstring_view z(L"ab");
-  pos = z.find_last_not_of(L'X');
-  VERIFY( pos == 1 );
-  pos = z.find_last_not_of(L"XYZ");
-  VERIFY( pos == 1 );
-  pos = z.find_last_not_of(L'b');
-  VERIFY( pos == 0 );
-  pos = z.find_last_not_of(L"Xb");
-  VERIFY( pos == 0 );
-  pos = z.find_last_not_of(L"Xa");
-  VERIFY( pos == 1 );
-}
-int
-main()
-{
-  test03();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operations/string_conversion/1.cc b/gdb/unittests/basic_string_view/operations/string_conversion/1.cc
deleted file mode 100644
index 3378423..0000000
--- a/gdb/unittests/basic_string_view/operations/string_conversion/1.cc
+++ /dev/null
@@ -1,51 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2014-2023 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/>.
-
-// basic_string_view::to_string
-
-#include <string_view>
-#include <string>
-#include <algorithm>
-#include <testsuite_hooks.h>
-#include <testsuite_allocator.h>
-
-void
-test01()
-{
-  const char str_lit[] = "123456789A";
-  const std::string_view sv(str_lit);
-  char buffer[4] = { 0 };
-
-  std::string s1{sv};
-  VERIFY( s1 == str_lit );
-  using test_alloc = __gnu_test::tracker_allocator<char>;
-  std::basic_string<char, std::char_traits<char>, test_alloc>
-    s2{sv, test_alloc{}};
-  static_assert( std::is_same<decltype(s2)::allocator_type, test_alloc>::value,
-                 "to_string() uses custom allocator" );
-  VERIFY( std::equal(s1.begin(), s1.end(), s2.begin(), s2.end()) );
-  auto s3 = static_cast<std::string>(sv);
-  VERIFY( s3 == s1 );
-}
-
-int
-main()
-{
-  test01();
-}
diff --git a/gdb/unittests/basic_string_view/operations/substr/char/1.cc b/gdb/unittests/basic_string_view/operations/substr/char/1.cc
deleted file mode 100644
index 1945446..0000000
--- a/gdb/unittests/basic_string_view/operations/substr/char/1.cc
+++ /dev/null
@@ -1,79 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view::substr
-
-namespace operations_substr_1 {
-
-static void
-test01 ()
-{
-  typedef gdb::string_view::size_type csize_type;
-  typedef gdb::string_view::const_reference cref;
-  typedef gdb::string_view::reference ref;
-  csize_type csz01;
-
-  const char str_lit01[] = "rockaway, pacifica";
-  const gdb::string_view str01(str_lit01);
-  gdb::string_view str02;
-
-  // basic_string_view<charT, _Traits, _Alloc>
-  //  substr(size_type pos = 0, size_type n = npos) const;
-  csz01 = str01.size();
-  str02 = str01.substr(0, 1);
-  VERIFY( str02 == "r" );
-  str02 = str01.substr(10);
-  VERIFY( str02 == "pacifica" );
-
-  try
-  {
-    str02 = str01.substr(csz01 + 1);
-    VERIFY( false ); 
-  }
-  catch(gdb_exception& fail)
-  {
-    VERIFY( true );
-  }
-  catch(...)
-  {
-    VERIFY( false );
-  }
-
-  try
-  {
-    str02 = str01.substr(csz01);
-    VERIFY( str02.size() == 0 );
-    VERIFY( str02.begin() == str01.end() );
-    VERIFY( true );
-  }
-  catch(...)
-  {
-    VERIFY( false );
-  }
-}
-
-static int
-main ()
-{ 
-  test01();
-
-  return 0;
-}
-
-} // namespace operations_substr_1
diff --git a/gdb/unittests/basic_string_view/operations/substr/wchar_t/1.cc b/gdb/unittests/basic_string_view/operations/substr/wchar_t/1.cc
deleted file mode 100644
index bfe79ac..0000000
--- a/gdb/unittests/basic_string_view/operations/substr/wchar_t/1.cc
+++ /dev/null
@@ -1,79 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view::substr
-
-#include <string_view>
-#include <stdexcept>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  typedef std::wstring_view::size_type csize_type;
-  typedef std::wstring_view::const_reference cref;
-  typedef std::wstring_view::reference ref;
-  csize_type csz01;
-
-  const wchar_t str_lit01[] = L"rockaway, pacifica";
-  const std::wstring_view str01(str_lit01);
-  std::wstring_view str02;
-
-  // basic_string_view<charT, _Traits, _Alloc>
-  //  substr(size_type pos = 0, size_type n = npos) const;
-  csz01 = str01.size();
-  str02 = str01.substr(0, 1);
-  VERIFY( str02 == L"r" );
-  str02 = str01.substr(10);
-  VERIFY( str02 == L"pacifica" );
-
-  try
-  {
-    str02 = str01.substr(csz01 + 1);
-    VERIFY( false ); 
-  }
-  catch(std::out_of_range& fail)
-  {
-    VERIFY( true );
-  }
-  catch(...)
-  {
-    VERIFY( false );
-  }
-
-  try
-  {
-    str02 = str01.substr(csz01);
-    VERIFY( str02.size() == 0 );
-    VERIFY( str02.begin() == str01.end() );
-    VERIFY( true );
-  }
-  catch(...)
-  {
-    VERIFY( false );
-  }
-}
-
-int
-main()
-{ 
-  test01();
-
-  return 0;
-}
diff --git a/gdb/unittests/basic_string_view/operators/char/2.cc b/gdb/unittests/basic_string_view/operators/char/2.cc
deleted file mode 100644
index 30e557f..0000000
--- a/gdb/unittests/basic_string_view/operators/char/2.cc
+++ /dev/null
@@ -1,373 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string non-member functions
-
-// operator==
-/*
-template<class charT, class traits, class Allocator>
-  bool operator==(const basic_string<charT,traits,Allocator>& lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator==(const charT* lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator==(const basic_string<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-*/
-
-// operator!=
-/*
-template<class charT, class traits, class Allocator>
-  bool operator!=(const basic_string<charT,traits,Allocator>& lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator!=(const charT* lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator!=(const basic_string<charT,traits,Allocator>& lhs, 
-                  const charT* rhs);
-*/
-
-// operator<
-/*
-template<class charT, class traits, class Allocator>
-  bool operator< (const basic_string<charT,traits,Allocator>& lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator< (const basic_string<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator< (const charT* lhs, 
-                  const basic_string<charT,traits,Allocator>& rhs);
-*/
-
-// operator>
-/*
-template<class charT, class traits, class Allocator>
-  bool operator> (const basic_string<charT,traits,Allocator>& lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator> (const basic_string<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator> (const charT* lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-*/
-
-// operator<=
-/*
-template<class charT, class traits, class Allocator>
-  bool operator<=(const basic_string<charT,traits,Allocator>& lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator<=(const basic_string<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator<=(const charT* lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-*/
-
-// operator>=
-/*
-template<class charT, class traits, class Allocator>
-  bool operator>=(const basic_string<charT,traits,Allocator>& lhs,
-                const basic_string<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator>=(const basic_string<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator>=(const charT* lhs,
-                  const basic_string<charT,traits,Allocator>& rhs);
-*/
-
-namespace operators_2 {
-
-static void
-test01()
-{
-  gdb::string_view 	str_0("costa rica");
-  gdb::string_view 	str_1("costa marbella");
-  gdb::string_view 	str_2("cost");
-  gdb::string_view	str_3("costa ricans");
-  gdb::string_view      str_4;
-
-  str_4 = str_0;
-  //comparisons between string objects
-  VERIFY( !(str_0 == str_1) );
-  VERIFY( !(str_0 == str_2) );
-  VERIFY( !(str_0 == str_3) );
-  VERIFY( !(str_1 == str_0) );
-  VERIFY( !(str_2 == str_0) );
-  VERIFY( !(str_3 == str_0) );
-  VERIFY( str_4 == str_0 );
-  VERIFY( str_0 == str_4 );
-
-  VERIFY( str_0 != str_1 );
-  VERIFY( str_0 != str_2 );
-  VERIFY( str_0 != str_3 );
-  VERIFY( str_1 != str_0 );
-  VERIFY( str_2 != str_0 );
-  VERIFY( str_3 != str_0 );
-  VERIFY( !(str_0 != str_4) );
-  VERIFY( !(str_4 != str_0) );
-
-  VERIFY( str_0 > str_1 ); //true cuz r>m
-  VERIFY( str_0 > str_2 );
-  VERIFY( !(str_0 > str_3) );
-  VERIFY( !(str_1 > str_0) ); //false cuz m<r
-  VERIFY( !(str_2 > str_0) );
-  VERIFY( str_3 > str_0 );
-  VERIFY( !(str_0 > str_4) );
-  VERIFY( !(str_4 > str_0) );
-
-  VERIFY( !(str_0 < str_1) ); //false cuz r>m
-  VERIFY( !(str_0 < str_2) );
-  VERIFY( str_0 < str_3 );
-  VERIFY( str_1 < str_0 ); //true cuz m<r
-  VERIFY( str_2 < str_0 );
-  VERIFY( !(str_3 < str_0) );
-  VERIFY( !(str_0 < str_4) );
-  VERIFY( !(str_4 < str_0) );
-
-  VERIFY( str_0 >= str_1 ); //true cuz r>m
-  VERIFY( str_0 >= str_2 );
-  VERIFY( !(str_0 >= str_3) );
-  VERIFY( !(str_1 >= str_0) );//false cuz m<r
-  VERIFY( !(str_2 >= str_0) );
-  VERIFY( str_3 >= str_0 );
-  VERIFY( str_0 >= str_4 );
-  VERIFY( str_4 >= str_0 );
-
-  VERIFY( !(str_0 <= str_1) );//false cuz r>m
-  VERIFY( !(str_0 <= str_2) );
-  VERIFY( str_0 <= str_3 );
-  VERIFY( str_1 <= str_0 );//true cuz m<r
-  VERIFY( str_2 <= str_0 );
-  VERIFY( !(str_3 <= str_0) );
-  VERIFY( str_0 <= str_4 );
-  VERIFY( str_4 <= str_0 );
-
-  //comparisons between string object and string literal
-  VERIFY( !(str_0 == "costa marbella") );
-  VERIFY( !(str_0 == "cost") );
-  VERIFY( !(str_0 == "costa ricans") );
-  VERIFY( !("costa marbella" == str_0) );
-  VERIFY( !("cost" == str_0) );
-  VERIFY( !("costa ricans" == str_0) );
-  VERIFY( "costa rica" == str_0 );
-  VERIFY( str_0 == "costa rica" );
-
-  VERIFY( str_0 != "costa marbella" );
-  VERIFY( str_0 != "cost" );
-  VERIFY( str_0 != "costa ricans" );
-  VERIFY( "costa marbella" != str_0 );
-  VERIFY( "cost" != str_0 );
-  VERIFY( "costa ricans" != str_0 );
-  VERIFY( !("costa rica" != str_0) );
-  VERIFY( !(str_0 != "costa rica") );
-
-  VERIFY( str_0 > "costa marbella" ); //true cuz r>m
-  VERIFY( str_0 > "cost" );
-  VERIFY( !(str_0 > "costa ricans") );
-  VERIFY( !("costa marbella" > str_0) );//false cuz m<r
-  VERIFY( !("cost" > str_0) );
-  VERIFY( "costa ricans" > str_0 );
-  VERIFY( !("costa rica" > str_0) );
-  VERIFY( !(str_0 > "costa rica") );
-
-  VERIFY( !(str_0 < "costa marbella") );//false cuz r>m
-  VERIFY( !(str_0 < "cost") );
-  VERIFY( str_0 < "costa ricans" );
-  VERIFY( "costa marbella" < str_0 );//true cuz m<r
-  VERIFY( "cost" < str_0 );
-  VERIFY( !("costa ricans" < str_0) );
-  VERIFY( !("costa rica" < str_0) );
-  VERIFY( !(str_0 < "costa rica") );
-
-  VERIFY( str_0 >= "costa marbella" );//true cuz r>m
-  VERIFY( str_0 >= "cost" );
-  VERIFY( !(str_0 >= "costa ricans") );
-  VERIFY( !("costa marbella" >= str_0) );//false cuz m<r
-  VERIFY( !("cost" >= str_0) );
-  VERIFY( "costa ricans" >= str_0 );
-  VERIFY( "costa rica" >= str_0 );
-  VERIFY( str_0 >= "costa rica" );
-
-  VERIFY( !(str_0 <= "costa marbella") );//false cuz r>m
-  VERIFY( !(str_0 <= "cost") );
-  VERIFY( str_0 <= "costa ricans" );
-  VERIFY( "costa marbella" <= str_0 );//true cuz m<r
-  VERIFY( "cost" <= str_0 );
-  VERIFY( !("costa ricans" <= str_0) );
-  VERIFY( "costa rica" <= str_0 );
-  VERIFY( str_0 <= "costa rica" );
-}
-
-#ifndef GDB_STRING_VIEW
-constexpr bool
-test02()
-{
-  std::string_view 	str_0("costa rica");
-  std::string_view 	str_1("costa marbella");
-  std::string_view 	str_2("cost");
-  std::string_view	str_3("costa ricans");
-  std::string_view        str_4;
-
-#undef VERIFY
-#define VERIFY(x) if (!(x)) return false
-
-  str_4 = str_0;
-  //comparisons between string objects
-  VERIFY( !(str_0 == str_1) );
-  VERIFY( !(str_0 == str_2) );
-  VERIFY( !(str_0 == str_3) );
-  VERIFY( !(str_1 == str_0) );
-  VERIFY( !(str_2 == str_0) );
-  VERIFY( !(str_3 == str_0) );
-  VERIFY( str_4 == str_0 );
-  VERIFY( str_0 == str_4 );
-
-  VERIFY( str_0 != str_1 );
-  VERIFY( str_0 != str_2 );
-  VERIFY( str_0 != str_3 );
-  VERIFY( str_1 != str_0 );
-  VERIFY( str_2 != str_0 );
-  VERIFY( str_3 != str_0 );
-  VERIFY( !(str_0 != str_4) );
-  VERIFY( !(str_4 != str_0) );
-
-  VERIFY( str_0 > str_1 ); //true cuz r>m
-  VERIFY( str_0 > str_2 );
-  VERIFY( !(str_0 > str_3) );
-  VERIFY( !(str_1 > str_0) ); //false cuz m<r
-  VERIFY( !(str_2 > str_0) );
-  VERIFY( str_3 > str_0 );
-  VERIFY( !(str_0 > str_4) );
-  VERIFY( !(str_4 > str_0) );
-
-  VERIFY( !(str_0 < str_1) ); //false cuz r>m
-  VERIFY( !(str_0 < str_2) );
-  VERIFY( str_0 < str_3 );
-  VERIFY( str_1 < str_0 ); //true cuz m<r
-  VERIFY( str_2 < str_0 );
-  VERIFY( !(str_3 < str_0) );
-  VERIFY( !(str_0 < str_4) );
-  VERIFY( !(str_4 < str_0) );
-
-  VERIFY( str_0 >= str_1 ); //true cuz r>m
-  VERIFY( str_0 >= str_2 );
-  VERIFY( !(str_0 >= str_3) );
-  VERIFY( !(str_1 >= str_0) );//false cuz m<r
-  VERIFY( !(str_2 >= str_0) );
-  VERIFY( str_3 >= str_0 );
-  VERIFY( str_0 >= str_4 );
-  VERIFY( str_4 >= str_0 );
-
-  VERIFY( !(str_0 <= str_1) );//false cuz r>m
-  VERIFY( !(str_0 <= str_2) );
-  VERIFY( str_0 <= str_3 );
-  VERIFY( str_1 <= str_0 );//true cuz m<r
-  VERIFY( str_2 <= str_0 );
-  VERIFY( !(str_3 <= str_0) );
-  VERIFY( str_0 <= str_4 );
-  VERIFY( str_4 <= str_0 );
-
-  //comparisons between string object and string literal
-  VERIFY( !(str_0 == "costa marbella") );
-  VERIFY( !(str_0 == "cost") );
-  VERIFY( !(str_0 == "costa ricans") );
-  VERIFY( !("costa marbella" == str_0) );
-  VERIFY( !("cost" == str_0) );
-  VERIFY( !("costa ricans" == str_0) );
-  VERIFY( "costa rica" == str_0 );
-  VERIFY( str_0 == "costa rica" );
-
-  VERIFY( str_0 != "costa marbella" );
-  VERIFY( str_0 != "cost" );
-  VERIFY( str_0 != "costa ricans" );
-  VERIFY( "costa marbella" != str_0 );
-  VERIFY( "cost" != str_0 );
-  VERIFY( "costa ricans" != str_0 );
-  VERIFY( !("costa rica" != str_0) );
-  VERIFY( !(str_0 != "costa rica") );
-
-  VERIFY( str_0 > "costa marbella" ); //true cuz r>m
-  VERIFY( str_0 > "cost" );
-  VERIFY( !(str_0 > "costa ricans") );
-  VERIFY( !("costa marbella" > str_0) );//false cuz m<r
-  VERIFY( !("cost" > str_0) );
-  VERIFY( "costa ricans" > str_0 );
-  VERIFY( !("costa rica" > str_0) );
-  VERIFY( !(str_0 > "costa rica") );
-
-  VERIFY( !(str_0 < "costa marbella") );//false cuz r>m
-  VERIFY( !(str_0 < "cost") );
-  VERIFY( str_0 < "costa ricans" );
-  VERIFY( "costa marbella" < str_0 );//true cuz m<r
-  VERIFY( "cost" < str_0 );
-  VERIFY( !("costa ricans" < str_0) );
-  VERIFY( !("costa rica" < str_0) );
-  VERIFY( !(str_0 < "costa rica") );
-
-  VERIFY( str_0 >= "costa marbella" );//true cuz r>m
-  VERIFY( str_0 >= "cost" );
-  VERIFY( !(str_0 >= "costa ricans") );
-  VERIFY( !("costa marbella" >= str_0) );//false cuz m<r
-  VERIFY( !("cost" >= str_0) );
-  VERIFY( "costa ricans" >= str_0 );
-  VERIFY( "costa rica" >= str_0 );
-  VERIFY( str_0 >= "costa rica" );
-
-  VERIFY( !(str_0 <= "costa marbella") );//false cuz r>m
-  VERIFY( !(str_0 <= "cost") );
-  VERIFY( str_0 <= "costa ricans" );
-  VERIFY( "costa marbella" <= str_0 );//true cuz m<r
-  VERIFY( "cost" <= str_0 );
-  VERIFY( !("costa ricans" <= str_0) );
-  VERIFY( "costa rica" <= str_0 );
-  VERIFY( str_0 <= "costa rica" );
-
-  return true;
-}
-#endif
-
-static int
-main ()
-{
-  test01();
-#ifndef GDB_STRING_VIEW
-  static_assert( test02() );
-#endif
-  return 0;
-}
-
-} // namespace operators_2
diff --git a/gdb/unittests/basic_string_view/operators/wchar_t/2.cc b/gdb/unittests/basic_string_view/operators/wchar_t/2.cc
deleted file mode 100644
index 5e043bc..0000000
--- a/gdb/unittests/basic_string_view/operators/wchar_t/2.cc
+++ /dev/null
@@ -1,367 +0,0 @@
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-// basic_string_view non-member functions
-
-// operator==
-/*
-template<class charT, class traits, class Allocator>
-  bool operator==(const basic_string_view<charT,traits,Allocator>& lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator==(const charT* lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator==(const basic_string_view<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-*/
-
-// operator!=
-/*
-template<class charT, class traits, class Allocator>
-  bool operator!=(const basic_string_view<charT,traits,Allocator>& lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator!=(const charT* lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator!=(const basic_string_view<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-*/
-
-// operator<
-/*
-template<class charT, class traits, class Allocator>
-  bool operator< (const basic_string_view<charT,traits,Allocator>& lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator< (const basic_string_view<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator< (const charT* lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-*/
-
-// operator>
-/*
-template<class charT, class traits, class Allocator>
-  bool operator> (const basic_string_view<charT,traits,Allocator>& lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator> (const basic_string_view<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator> (const charT* lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-*/
-
-// operator<=
-/*
-template<class charT, class traits, class Allocator>
-  bool operator<=(const basic_string_view<charT,traits,Allocator>& lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator<=(const basic_string_view<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator<=(const charT* lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-*/
-
-// operator>=
-/*
-template<class charT, class traits, class Allocator>
-  bool operator>=(const basic_string_view<charT,traits,Allocator>& lhs,
-                const basic_string_view<charT,traits,Allocator>& rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator>=(const basic_string_view<charT,traits,Allocator>& lhs,
-                  const charT* rhs);
-
-template<class charT, class traits, class Allocator>
-  bool operator>=(const charT* lhs,
-                  const basic_string_view<charT,traits,Allocator>& rhs);
-*/
-
-#include <string_view>
-#include <testsuite_hooks.h>
-
-void
-test01()
-{
-  std::wstring_view 	str_0(L"costa rica");
-  std::wstring_view 	str_1(L"costa marbella");
-  std::wstring_view 	str_2(L"cost");
-  std::wstring_view	str_3(L"costa ricans");
-  std::wstring_view  str_4;
-
-  str_4 = str_0;
-  //comparisons between string_view objects
-  VERIFY( !(str_0 == str_1) );
-  VERIFY( !(str_0 == str_2) );
-  VERIFY( !(str_0 == str_3) );
-  VERIFY( !(str_1 == str_0) );
-  VERIFY( !(str_2 == str_0) );
-  VERIFY( !(str_3 == str_0) );
-  VERIFY( str_4 == str_0 );
-  VERIFY( str_0 == str_4 );
-
-  VERIFY( str_0 != str_1 );
-  VERIFY( str_0 != str_2 );
-  VERIFY( str_0 != str_3 );
-  VERIFY( str_1 != str_0 );
-  VERIFY( str_2 != str_0 );
-  VERIFY( str_3 != str_0 );
-  VERIFY( !(str_0 != str_4) );
-  VERIFY( !(str_4 != str_0) );
-
-  VERIFY( str_0 > str_1 ); //true cuz r>m
-  VERIFY( str_0 > str_2 );
-  VERIFY( !(str_0 > str_3) );
-  VERIFY( !(str_1 > str_0) ); //false cuz m<r
-  VERIFY( !(str_2 > str_0) );
-  VERIFY( str_3 > str_0 );
-  VERIFY( !(str_0 > str_4) );
-  VERIFY( !(str_4 > str_0) );
-
-  VERIFY( !(str_0 < str_1) ); //false cuz r>m
-  VERIFY( !(str_0 < str_2) );
-  VERIFY( str_0 < str_3 );
-  VERIFY( str_1 < str_0 ); //true cuz m<r
-  VERIFY( str_2 < str_0 );
-  VERIFY( !(str_3 < str_0) );
-  VERIFY( !(str_0 < str_4) );
-  VERIFY( !(str_4 < str_0) );
-
-  VERIFY( str_0 >= str_1 ); //true cuz r>m
-  VERIFY( str_0 >= str_2 );
-  VERIFY( !(str_0 >= str_3) );
-  VERIFY( !(str_1 >= str_0) );//false cuz m<r
-  VERIFY( !(str_2 >= str_0) );
-  VERIFY( str_3 >= str_0 );
-  VERIFY( str_0 >= str_4 );
-  VERIFY( str_4 >= str_0 );
-
-  VERIFY( !(str_0 <= str_1) );//false cuz r>m
-  VERIFY( !(str_0 <= str_2) );
-  VERIFY( str_0 <= str_3 );
-  VERIFY( str_1 <= str_0 );//true cuz m<r
-  VERIFY( str_2 <= str_0 );
-  VERIFY( !(str_3 <= str_0) );
-  VERIFY( str_0 <= str_4 );
-  VERIFY( str_4 <= str_0 );
-
-  //comparisons between string_view object and string_view literal
-  VERIFY( !(str_0 == L"costa marbella") );
-  VERIFY( !(str_0 == L"cost") );
-  VERIFY( !(str_0 == L"costa ricans") );
-  VERIFY( !(L"costa marbella" == str_0) );
-  VERIFY( !(L"cost" == str_0) );
-  VERIFY( !(L"costa ricans" == str_0) );
-  VERIFY( L"costa rica" == str_0 );
-  VERIFY( str_0 == L"costa rica" );
-
-  VERIFY( str_0 != L"costa marbella" );
-  VERIFY( str_0 != L"cost" );
-  VERIFY( str_0 != L"costa ricans" );
-  VERIFY( L"costa marbella" != str_0 );
-  VERIFY( L"cost" != str_0 );
-  VERIFY( L"costa ricans" != str_0 );
-  VERIFY( !(L"costa rica" != str_0) );
-  VERIFY( !(str_0 != L"costa rica") );
-
-  VERIFY( str_0 > L"costa marbella" ); //true cuz r>m
-  VERIFY( str_0 > L"cost" );
-  VERIFY( !(str_0 > L"costa ricans") );
-  VERIFY( !(L"costa marbella" > str_0) );//false cuz m<r
-  VERIFY( !(L"cost" > str_0) );
-  VERIFY( L"costa ricans" > str_0 );
-  VERIFY( !(L"costa rica" > str_0) );
-  VERIFY( !(str_0 > L"costa rica") );
-
-  VERIFY( !(str_0 < L"costa marbella") );//false cuz r>m
-  VERIFY( !(str_0 < L"cost") );
-  VERIFY( str_0 < L"costa ricans" );
-  VERIFY( L"costa marbella" < str_0 );//true cuz m<r
-  VERIFY( L"cost" < str_0 );
-  VERIFY( !(L"costa ricans" < str_0) );
-  VERIFY( !(L"costa rica" < str_0) );
-  VERIFY( !(str_0 < L"costa rica") );
-
-  VERIFY( str_0 >= L"costa marbella" );//true cuz r>m
-  VERIFY( str_0 >= L"cost" );
-  VERIFY( !(str_0 >= L"costa ricans") );
-  VERIFY( !(L"costa marbella" >= str_0) );//false cuz m<r
-  VERIFY( !(L"cost" >= str_0) );
-  VERIFY( L"costa ricans" >= str_0 );
-  VERIFY( L"costa rica" >= str_0 );
-  VERIFY( str_0 >= L"costa rica" );
-
-  VERIFY( !(str_0 <= L"costa marbella") );//false cuz r>m
-  VERIFY( !(str_0 <= L"cost") );
-  VERIFY( str_0 <= L"costa ricans" );
-  VERIFY( L"costa marbella" <= str_0 );//true cuz m<r
-  VERIFY( L"cost" <= str_0 );
-  VERIFY( !(L"costa ricans" <= str_0) );
-  VERIFY( L"costa rica" <= str_0 );
-  VERIFY( str_0 <= L"costa rica" );
-}
-
-constexpr bool
-test02()
-{
-  std::wstring_view 	str_0(L"costa rica");
-  std::wstring_view 	str_1(L"costa marbella");
-  std::wstring_view 	str_2(L"cost");
-  std::wstring_view	str_3(L"costa ricans");
-  std::wstring_view  str_4;
-
-#undef VERIFY
-#define VERIFY(x) if (!(x)) return false
-
-  str_4 = str_0;
-  //comparisons between string_view objects
-  VERIFY( !(str_0 == str_1) );
-  VERIFY( !(str_0 == str_2) );
-  VERIFY( !(str_0 == str_3) );
-  VERIFY( !(str_1 == str_0) );
-  VERIFY( !(str_2 == str_0) );
-  VERIFY( !(str_3 == str_0) );
-  VERIFY( str_4 == str_0 );
-  VERIFY( str_0 == str_4 );
-
-  VERIFY( str_0 != str_1 );
-  VERIFY( str_0 != str_2 );
-  VERIFY( str_0 != str_3 );
-  VERIFY( str_1 != str_0 );
-  VERIFY( str_2 != str_0 );
-  VERIFY( str_3 != str_0 );
-  VERIFY( !(str_0 != str_4) );
-  VERIFY( !(str_4 != str_0) );
-
-  VERIFY( str_0 > str_1 ); //true cuz r>m
-  VERIFY( str_0 > str_2 );
-  VERIFY( !(str_0 > str_3) );
-  VERIFY( !(str_1 > str_0) ); //false cuz m<r
-  VERIFY( !(str_2 > str_0) );
-  VERIFY( str_3 > str_0 );
-  VERIFY( !(str_0 > str_4) );
-  VERIFY( !(str_4 > str_0) );
-
-  VERIFY( !(str_0 < str_1) ); //false cuz r>m
-  VERIFY( !(str_0 < str_2) );
-  VERIFY( str_0 < str_3 );
-  VERIFY( str_1 < str_0 ); //true cuz m<r
-  VERIFY( str_2 < str_0 );
-  VERIFY( !(str_3 < str_0) );
-  VERIFY( !(str_0 < str_4) );
-  VERIFY( !(str_4 < str_0) );
-
-  VERIFY( str_0 >= str_1 ); //true cuz r>m
-  VERIFY( str_0 >= str_2 );
-  VERIFY( !(str_0 >= str_3) );
-  VERIFY( !(str_1 >= str_0) );//false cuz m<r
-  VERIFY( !(str_2 >= str_0) );
-  VERIFY( str_3 >= str_0 );
-  VERIFY( str_0 >= str_4 );
-  VERIFY( str_4 >= str_0 );
-
-  VERIFY( !(str_0 <= str_1) );//false cuz r>m
-  VERIFY( !(str_0 <= str_2) );
-  VERIFY( str_0 <= str_3 );
-  VERIFY( str_1 <= str_0 );//true cuz m<r
-  VERIFY( str_2 <= str_0 );
-  VERIFY( !(str_3 <= str_0) );
-  VERIFY( str_0 <= str_4 );
-  VERIFY( str_4 <= str_0 );
-
-  //comparisons between string_view object and string_view literal
-  VERIFY( !(str_0 == L"costa marbella") );
-  VERIFY( !(str_0 == L"cost") );
-  VERIFY( !(str_0 == L"costa ricans") );
-  VERIFY( !(L"costa marbella" == str_0) );
-  VERIFY( !(L"cost" == str_0) );
-  VERIFY( !(L"costa ricans" == str_0) );
-  VERIFY( L"costa rica" == str_0 );
-  VERIFY( str_0 == L"costa rica" );
-
-  VERIFY( str_0 != L"costa marbella" );
-  VERIFY( str_0 != L"cost" );
-  VERIFY( str_0 != L"costa ricans" );
-  VERIFY( L"costa marbella" != str_0 );
-  VERIFY( L"cost" != str_0 );
-  VERIFY( L"costa ricans" != str_0 );
-  VERIFY( !(L"costa rica" != str_0) );
-  VERIFY( !(str_0 != L"costa rica") );
-
-  VERIFY( str_0 > L"costa marbella" ); //true cuz r>m
-  VERIFY( str_0 > L"cost" );
-  VERIFY( !(str_0 > L"costa ricans") );
-  VERIFY( !(L"costa marbella" > str_0) );//false cuz m<r
-  VERIFY( !(L"cost" > str_0) );
-  VERIFY( L"costa ricans" > str_0 );
-  VERIFY( !(L"costa rica" > str_0) );
-  VERIFY( !(str_0 > L"costa rica") );
-
-  VERIFY( !(str_0 < L"costa marbella") );//false cuz r>m
-  VERIFY( !(str_0 < L"cost") );
-  VERIFY( str_0 < L"costa ricans" );
-  VERIFY( L"costa marbella" < str_0 );//true cuz m<r
-  VERIFY( L"cost" < str_0 );
-  VERIFY( !(L"costa ricans" < str_0) );
-  VERIFY( !(L"costa rica" < str_0) );
-  VERIFY( !(str_0 < L"costa rica") );
-
-  VERIFY( str_0 >= L"costa marbella" );//true cuz r>m
-  VERIFY( str_0 >= L"cost" );
-  VERIFY( !(str_0 >= L"costa ricans") );
-  VERIFY( !(L"costa marbella" >= str_0) );//false cuz m<r
-  VERIFY( !(L"cost" >= str_0) );
-  VERIFY( L"costa ricans" >= str_0 );
-  VERIFY( L"costa rica" >= str_0 );
-  VERIFY( str_0 >= L"costa rica" );
-
-  VERIFY( !(str_0 <= L"costa marbella") );//false cuz r>m
-  VERIFY( !(str_0 <= L"cost") );
-  VERIFY( str_0 <= L"costa ricans" );
-  VERIFY( L"costa marbella" <= str_0 );//true cuz m<r
-  VERIFY( L"cost" <= str_0 );
-  VERIFY( !(L"costa ricans" <= str_0) );
-  VERIFY( L"costa rica" <= str_0 );
-  VERIFY( str_0 <= L"costa rica" );
-
-  return true;
-}
-
-int
-main()
-{
-  test01();
-  static_assert( test02() );
-}
diff --git a/gdb/unittests/basic_string_view/range_access/char/1.cc b/gdb/unittests/basic_string_view/range_access/char/1.cc
deleted file mode 100644
index 4b9e0bd..0000000
--- a/gdb/unittests/basic_string_view/range_access/char/1.cc
+++ /dev/null
@@ -1,47 +0,0 @@
-// { dg-do compile }
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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++17 27.7, range access [iterator.range]
-
-#include <string_view>
-
-void
-test01()
-{
-  std::string_view s("Hello, World!");
-  std::begin(s);
-  std::end(s);
-  std::rbegin(s);
-  std::rend(s);
-}
-
-void
-test02()
-{
-  constexpr std::string_view s("Hello, World!");
-  [[maybe_unused]] constexpr auto b = std::begin(s);
-  [[maybe_unused]] constexpr auto e = std::end(s);
-  [[maybe_unused]] constexpr auto cb = std::cbegin(s);
-  [[maybe_unused]] constexpr auto ce = std::cend(s);
-  [[maybe_unused]] constexpr auto rb = std::rbegin(s);
-  [[maybe_unused]] constexpr auto re = std::rend(s);
-  [[maybe_unused]] constexpr auto crb = std::crbegin(s);
-  [[maybe_unused]] constexpr auto cre = std::crend(s);
-}
diff --git a/gdb/unittests/basic_string_view/range_access/wchar_t/1.cc b/gdb/unittests/basic_string_view/range_access/wchar_t/1.cc
deleted file mode 100644
index 68b6b1c..0000000
--- a/gdb/unittests/basic_string_view/range_access/wchar_t/1.cc
+++ /dev/null
@@ -1,47 +0,0 @@
-// { dg-do compile }
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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++17 27.7, range access [iterator.range]
-
-#include <string_view>
-
-void
-test01()
-{
-  std::wstring_view ws(L"Hello, World!");
-  std::begin(ws);
-  std::end(ws);
-  std::rbegin(ws);
-  std::rend(ws);
-}
-
-void
-test02()
-{
-  constexpr std::wstring_view ws(L"Hello, World!");
-  [[maybe_unused]] constexpr auto b = std::begin(ws);
-  [[maybe_unused]] constexpr auto e = std::end(ws);
-  [[maybe_unused]] constexpr auto cb = std::cbegin(ws);
-  [[maybe_unused]] constexpr auto ce = std::cend(ws);
-  [[maybe_unused]] constexpr auto rb = std::rbegin(ws);
-  [[maybe_unused]] constexpr auto re = std::rend(ws);
-  [[maybe_unused]] constexpr auto crb = std::crbegin(ws);
-  [[maybe_unused]] constexpr auto cre = std::crend(ws);
-}
diff --git a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/1.cc b/gdb/unittests/basic_string_view/requirements/explicit_instantiation/1.cc
deleted file mode 100644
index afea994..0000000
--- a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/1.cc
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright (C) 2013-2023 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/>.
-
-
-// This file tests explicit instantiation of basic_string
-
-#include <string_view>
-
-// { dg-do compile }
-// { dg-options "-std=gnu++17" }
-
-template class std::basic_string_view<int, std::char_traits<int>>;
diff --git a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/char/1.cc b/gdb/unittests/basic_string_view/requirements/explicit_instantiation/char/1.cc
deleted file mode 100644
index 7db0e92..0000000
--- a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/char/1.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// { dg-do compile }
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-
-template class std::basic_string_view<char>;
diff --git a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc b/gdb/unittests/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc
deleted file mode 100644
index 5eb588f..0000000
--- a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc
+++ /dev/null
@@ -1,24 +0,0 @@
-// { dg-do compile }
-// { dg-options "-std=gnu++17" }
-// { dg-require-cstdint "" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-
-template class std::basic_string_view<char16_t>;
diff --git a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc b/gdb/unittests/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc
deleted file mode 100644
index 2c64602..0000000
--- a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc
+++ /dev/null
@@ -1,24 +0,0 @@
-// { dg-do compile }
-// { dg-options "-std=gnu++17" }
-// { dg-require-cstdint "" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-
-template class std::basic_string_view<char32_t>;
diff --git a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc b/gdb/unittests/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc
deleted file mode 100644
index 213615f..0000000
--- a/gdb/unittests/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc
+++ /dev/null
@@ -1,23 +0,0 @@
-// { dg-do compile }
-// { dg-options "-std=gnu++17" }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-
-template class std::basic_string_view<wchar_t>;
diff --git a/gdb/unittests/basic_string_view/requirements/typedefs.cc b/gdb/unittests/basic_string_view/requirements/typedefs.cc
deleted file mode 100644
index 2bb08ab..0000000
--- a/gdb/unittests/basic_string_view/requirements/typedefs.cc
+++ /dev/null
@@ -1,47 +0,0 @@
-
-// { dg-options "-std=gnu++17" }
-// { dg-do compile }
-
-// Copyright (C) 2013-2023 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/>.
-
-#include <string_view>
-#include <testsuite_containers.h>
-
-namespace __gnu_test
-{
-  template<typename _Tp1, typename _Tp2>
-    struct traits<std::basic_string_view<_Tp1, _Tp2>> : public traits_base
-    {
-      typedef std::true_type    is_container;
-      typedef std::true_type    is_reversible;
-    };
-}
-
-#include <testsuite_containers.h>
-
-// Check container for required typedefs.
-
-__gnu_test::basic_types<std::string_view> t1b;
-__gnu_test::reversible_types<std::string_view> t1r;
-typedef typename std::string_view::traits_type traits_type1;
-
-#ifdef _GLIBCXX_USE_WCHAR_T
-__gnu_test::basic_types<std::wstring_view> t2b;
-__gnu_test::reversible_types<std::wstring_view> t2r;
-typedef typename std::wstring_view::traits_type traits_type2;
-#endif
diff --git a/gdb/unittests/basic_string_view/typedefs.cc b/gdb/unittests/basic_string_view/typedefs.cc
deleted file mode 100644
index c4222bf..0000000
--- a/gdb/unittests/basic_string_view/typedefs.cc
+++ /dev/null
@@ -1,36 +0,0 @@
-// { dg-options "-std=gnu++17" }
-// { dg-do compile }
-
-// Copyright (C) 2014-2023 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/>.
-
-#include <string_view>
-
-template<typename C, typename T>
-  using check1_t = std::basic_string_view<C, T>;
-
-using check2_t = std::string_view;
-
-#ifdef _GLIBCXX_USE_C99_STDINT_TR1
-using check3_t = std::u16string_view;
-using check4_t = std::u32string_view;
-#endif
-
-#ifdef _GLIBCXX_USE_WCHAR_T
-using check5_t = std::wstring_view;
-#endif
-
diff --git a/gdb/unittests/basic_string_view/types/1.cc b/gdb/unittests/basic_string_view/types/1.cc
deleted file mode 100644
index d742df2..0000000
--- a/gdb/unittests/basic_string_view/types/1.cc
+++ /dev/null
@@ -1,43 +0,0 @@
-//
-// Copyright (C) 2013-2023 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/>.
-//
-
-// { dg-options "-std=gnu++17" }
-// { dg-do compile }
-
-#include <string_view>
-
-struct T
-{
-  typedef std::string_view String_view;
-  typedef String_view::iterator iterator;
-  typedef String_view::const_iterator const_iterator;
-
-  char t(iterator f)             { return *f; }
-  char t(const_iterator f) const { return *f; }
-};
-
-void
-f()
-{
-  std::string_view s;
-  T t;
-  T::const_iterator i = s.begin();
-  
-  t.t(i);
-}
diff --git a/gdb/unittests/string_view-selftests.c b/gdb/unittests/string_view-selftests.c
deleted file mode 100644
index cf43d29..0000000
--- a/gdb/unittests/string_view-selftests.c
+++ /dev/null
@@ -1,193 +0,0 @@
-/* Self tests for string_view for GDB, the GNU debugger.
-
-   Copyright (C) 2018-2023 Free Software Foundation, Inc.
-
-   This file is part of GDB.
-
-   This program 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 of the License, or
-   (at your option) any later version.
-
-   This program 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 program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-/* No need to test string_view if we're using C++17, since we're going to use
-   the "real" version.  */
-#if __cplusplus < 201703L
-
-#define GNULIB_NAMESPACE gnulib
-
-#include "diagnostics.h"
-
-/* Since this file uses GNULIB_NAMESPACE, some code defined in headers ends up
-   using system functions rather than gnulib replacements.  This is not really
-   a problem for this test, but it generates some warnings with Clang, silence
-   them.  */
-DIAGNOSTIC_PUSH
-DIAGNOSTIC_IGNORE_USER_DEFINED_WARNINGS
-
-#include "defs.h"
-#include "gdbsupport/selftest.h"
-#include "gdbsupport/gdb_string_view.h"
-
-/* Used by the included .cc files below.  Included here because the
-   included test files are wrapped in a namespace.  */
-#include <string>
-#include <sstream>
-#include <fstream>
-#include <iostream>
-
-DIAGNOSTIC_POP
-
-/* libstdc++'s testsuite uses VERIFY.  */
-#define VERIFY SELF_CHECK
-
-/* Used to disable testing features not supported by
-   gdb::string_view.  */
-#define GDB_STRING_VIEW
-
-namespace selftests {
-namespace string_view {
-
-/* The actual tests live in separate files, which were originally
-   copied over from libstdc++'s testsuite.  To preserve the structure
-   and help with comparison with the original tests, the file names
-   have been preserved, and only minimal modification was done to have
-   them compile against gdb::string_view instead of std::string_view:
-
-     - std::string_view->gdb::string_view, etc.
-     - ATTRIBUTE_UNUSED in a few places
-     - wrap each file in a namespace so they can all be compiled as a
-       single unit.
-     - libstdc++'s license and formatting style was preserved.
-*/
-
-#include "basic_string_view/capacity/1.cc"
-#include "basic_string_view/cons/char/1.cc"
-#include "basic_string_view/cons/char/2.cc"
-#include "basic_string_view/cons/char/3.cc"
-#include "basic_string_view/element_access/char/1.cc"
-#include "basic_string_view/element_access/char/empty.cc"
-#include "basic_string_view/element_access/char/front_back.cc"
-#include "basic_string_view/inserters/char/2.cc"
-#include "basic_string_view/modifiers/remove_prefix/char/1.cc"
-#include "basic_string_view/modifiers/remove_suffix/char/1.cc"
-#include "basic_string_view/modifiers/swap/char/1.cc"
-#include "basic_string_view/operations/compare/char/1.cc"
-#include "basic_string_view/operations/compare/char/13650.cc"
-#include "basic_string_view/operations/copy/char/1.cc"
-#include "basic_string_view/operations/data/char/1.cc"
-#include "basic_string_view/operations/find/char/1.cc"
-#include "basic_string_view/operations/find/char/2.cc"
-#include "basic_string_view/operations/find/char/3.cc"
-#include "basic_string_view/operations/find/char/4.cc"
-#include "basic_string_view/operations/rfind/char/1.cc"
-#include "basic_string_view/operations/rfind/char/2.cc"
-#include "basic_string_view/operations/rfind/char/3.cc"
-#include "basic_string_view/operations/substr/char/1.cc"
-#include "basic_string_view/operators/char/2.cc"
-
-static void
-run_tests ()
-{
-  capacity_1::main ();
-  cons_1::main ();
-  cons_2::main ();
-  cons_3::main ();
-  element_access_1::main ();
-  element_access_empty::main ();
-  element_access_front_back::main ();
-  inserters_2::main ();
-  modifiers_remove_prefix::main ();
-  modifiers_remove_suffix::main ();
-  modifiers_swap::test01 ();
-  operations_compare_1::main ();
-  operations_compare_13650::main ();
-  operations_copy_1::main ();
-  operations_data_1::main ();
-  operations_find_1::main ();
-  operations_find_2::main ();
-  operations_find_3::main ();
-  operations_find_4::main ();
-  operations_rfind_1::main ();
-  operations_rfind_2::main ();
-  operations_rfind_3::main ();
-  operations_substr_1::main ();
-  operators_2::main ();
-
-  constexpr gdb::string_view sv_empty;
-  SELF_CHECK (sv_empty.empty ());
-
-  std::string std_string = "fika";
-  gdb::string_view sv1 (std_string);
-  SELF_CHECK (sv1 == "fika");
-
-  constexpr const char *fika = "fika";
-  gdb::string_view sv2 (fika);
-  SELF_CHECK (sv2 == "fika");
-
-  constexpr gdb::string_view sv3 (fika, 3);
-  SELF_CHECK (sv3 == "fik");
-
-  constexpr gdb::string_view sv4 (sv3);
-  SELF_CHECK (sv4 == "fik");
-
-  constexpr gdb::string_view::iterator it_begin = sv4.begin ();
-  static_assert (*it_begin == 'f', "");
-
-  constexpr gdb::string_view::iterator it_end = sv4.end ();
-  static_assert (*it_end == 'a', "");
-
-  const gdb::string_view::reverse_iterator it_rbegin = sv4.rbegin ();
-  SELF_CHECK (*it_rbegin == 'k');
-
-  const gdb::string_view::reverse_iterator it_rend = sv4.rend ();
-  SELF_CHECK (*(it_rend - 1) == 'f');
-
-  constexpr gdb::string_view::size_type size = sv4.size ();
-  static_assert (size == 3, "");
-
-  constexpr gdb::string_view::size_type length = sv4.length ();
-  static_assert (length == 3, "");
-
-  constexpr gdb::string_view::size_type max_size = sv4.max_size ();
-  static_assert (max_size > 0, "");
-
-  constexpr bool empty = sv4.empty ();
-  static_assert (!empty, "");
-
-  constexpr char c1 = sv4[1];
-  static_assert (c1 == 'i', "");
-
-  constexpr char c2 = sv4.at (2);
-  static_assert (c2 == 'k', "");
-
-  constexpr char front = sv4.front ();
-  static_assert (front == 'f', "");
-
-  constexpr char back = sv4.back ();
-  static_assert (back == 'k', "");
-
-  constexpr const char *data = sv4.data ();
-  static_assert (data == fika, "");
-}
-
-} /* namespace string_view */
-} /* namespace selftests */
-
-#endif /* __cplusplus < 201703L */
-
-void _initialize_string_view_selftests ();
-void
-_initialize_string_view_selftests ()
-{
-#if defined(GDB_STRING_VIEW)
-  selftests::register_test ("string_view", selftests::string_view::run_tests);
-#endif
-}