From 2bd112dee7f9786a0484d9281899a9bb0b2ae57d Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Fri, 7 Oct 2022 12:18:57 +0100
Subject: libstdc++: std::make_signed_t<cv bool> should be ill-formed

Currently we only reject std::make_signed_t<bool> but not cv bool.
Similarly for std::make_unsigned_t<cv bool>.

As well as making those ill-formed, this adds a requires-clause to the
make_signed and make_unsigned primary templates. This makes
non-integral, non-enum cases fail immediately with a clear error, rather
than giving an error about __make_signed_selector<T, false, false> being
incomplete.

libstdc++-v3/ChangeLog:

	* include/std/type_traits (make_signed, make_unsigned): Add
	specializations for cv bool. Add requires-clause for C++20 to
	improve diagnostics for non-integral, non-enum cases.
	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
	Check cv bool.
	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
	Likewise.
	* testsuite/24_iterators/range_access/range_access_cpp20_neg.cc:
	Adjust expected errors for C++20 and later.
	* testsuite/lib/prune.exp: Prune "in requirements  [with ...]"
	lines from diagnostics.
---
 libstdc++-v3/include/std/type_traits               | 18 +++++++++++----
 .../make_signed/requirements/typedefs_neg.cc       | 27 ++++++++++------------
 .../make_unsigned/requirements/typedefs_neg.cc     | 25 +++++++++-----------
 .../range_access/range_access_cpp20_neg.cc         |  3 ++-
 libstdc++-v3/testsuite/lib/prune.exp               |  1 +
 5 files changed, 40 insertions(+), 34 deletions(-)

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits
index b74565e..6108b98 100644
--- a/libstdc++-v3/include/std/type_traits
+++ b/libstdc++-v3/include/std/type_traits
@@ -1802,12 +1802,17 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   // Primary template.
   /// make_unsigned
   template<typename _Tp>
+#if __cpp_concepts
+    requires is_integral<_Tp>::value || __is_enum(_Tp)
+#endif
     struct make_unsigned
     { typedef typename __make_unsigned_selector<_Tp>::__type type; };
 
   // Integral, but don't define.
-  template<>
-    struct make_unsigned<bool>;
+  template<> struct make_unsigned<bool>;
+  template<> struct make_unsigned<bool const>;
+  template<> struct make_unsigned<bool volatile>;
+  template<> struct make_unsigned<bool const volatile>;
 
   /// @cond undocumented
 
@@ -1932,12 +1937,17 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   // Primary template.
   /// make_signed
   template<typename _Tp>
+#if __cpp_concepts
+    requires is_integral<_Tp>::value || __is_enum(_Tp)
+#endif
     struct make_signed
     { typedef typename __make_signed_selector<_Tp>::__type type; };
 
   // Integral, but don't define.
-  template<>
-    struct make_signed<bool>;
+  template<> struct make_signed<bool>;
+  template<> struct make_signed<bool const>;
+  template<> struct make_signed<bool volatile>;
+  template<> struct make_signed<bool const volatile>;
 
 #if __cplusplus > 201103L
   /// Alias template for make_signed
diff --git a/libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc b/libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc
index 051bb64..88b8ae8 100644
--- a/libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc
@@ -20,31 +20,28 @@
 // <http://www.gnu.org/licenses/>.
 
 #include <type_traits>
-#include <testsuite_character.h>
 
-enum test_enum { first_selection };
+struct pod_class { };
 
 void test01()
 {
   using std::make_signed;
 
   // Negative tests.
-  typedef make_signed<bool>::type     	test1_type;
+  using T1 = make_signed<bool>::type; // { dg-error "incomplete" }
+  using T2 = make_signed<const bool>::type; // { dg-error "incomplete" }
+  using T3 = make_signed<volatile bool>::type; // { dg-error "incomplete" }
+  using T4 = make_signed<const volatile bool>::type; // { dg-error "incomplete" }
 
-  typedef make_signed<__gnu_test::pod_uint>::type     	test2_type;
+  using T5 = make_signed<pod_class>::type; // { dg-error "here" }
 
-  typedef make_signed<int[4]>::type     test3_type;
+  using T6 = make_signed<int[4]>::type; // { dg-error "here" }
 
-  typedef void (fn_type) ();
-  typedef make_signed<fn_type>::type  	test4_type;
+  using fn_type = void ();
+  using T7 = make_signed<fn_type>::type; // { dg-error "here" }
 
-  typedef make_signed<float>::type  	test5_type;
+  using T8 = make_signed<float>::type; // { dg-error "here" }
 }
 
-// { dg-error "invalid use of incomplete type" "" { target *-*-* } 32 }
-// { dg-error "required from here" "" { target *-*-* } 34 }
-// { dg-error "required from here" "" { target *-*-* } 36 }
-// { dg-error "required from here" "" { target *-*-* } 39 }
-// { dg-error "required from here" "" { target *-*-* } 41 }
-
-// { dg-error "invalid use of incomplete type" "" { target *-*-* } 0 }
+// { dg-error "invalid use of incomplete type" "" { target c++17_down } 0 }
+// { dg-error "constraint failure" "" { target c++20 } 0 }
diff --git a/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc b/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc
index ff98cc4..50f15e7 100644
--- a/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc
@@ -21,7 +21,6 @@
 
 #include <type_traits>
 
-enum test_enum { first_selection };
 struct pod_class { };
 
 void test01()
@@ -29,22 +28,20 @@ void test01()
   using std::make_unsigned;
 
   // Negative tests.
-  typedef make_unsigned<bool>::type     	test1_type;
+  using T1 = make_unsigned<bool>::type; // { dg-error "incomplete" }
+  using T2 = make_unsigned<const bool>::type; // { dg-error "incomplete" }
+  using T3 = make_unsigned<volatile bool>::type; // { dg-error "incomplete" }
+  using T4 = make_unsigned<const volatile bool>::type; // { dg-error "incomplete" }
 
-  typedef make_unsigned<pod_class>::type     	test2_type;
+  using T5 = make_unsigned<pod_class>::type; // { dg-error "here" }
 
-  typedef make_unsigned<int[4]>::type     test3_type;
+  using T6 = make_unsigned<int[4]>::type; // { dg-error "here" }
 
-  typedef void (fn_type) ();
-  typedef make_unsigned<fn_type>::type  	test4_type;
+  using fn_type = void ();
+  using T7 = make_unsigned<fn_type>::type; // { dg-error "here" }
 
-  typedef make_unsigned<float>::type  		test5_type;
+  using T8 = make_unsigned<float>::type; // { dg-error "here" }
 }
 
-// { dg-error "invalid use of incomplete type" "" { target *-*-* } 32 }
-// { dg-error "required from here" "" { target *-*-* } 34 }
-// { dg-error "required from here" "" { target *-*-* } 36 }
-// { dg-error "required from here" "" { target *-*-* } 39 }
-// { dg-error "required from here" "" { target *-*-* } 41 }
-
-// { dg-error "invalid use of incomplete type" "" { target *-*-* } 0 }
+// { dg-error "invalid use of incomplete type" "" { target c++17_down } 0 }
+// { dg-error "constraint failure" "" { target c++20 } 0 }
diff --git a/libstdc++-v3/testsuite/24_iterators/range_access/range_access_cpp20_neg.cc b/libstdc++-v3/testsuite/24_iterators/range_access/range_access_cpp20_neg.cc
index c0825a5..26c8ae0 100644
--- a/libstdc++-v3/testsuite/24_iterators/range_access/range_access_cpp20_neg.cc
+++ b/libstdc++-v3/testsuite/24_iterators/range_access/range_access_cpp20_neg.cc
@@ -46,4 +46,5 @@ test03()
   C c;
   std::ssize(c);  // { dg-error "no matching function" }
 }
-// { dg-error "incomplete type .*make_signed.*S" "" { target *-*-* } 0 }
+// { dg-error "incomplete type .*make_signed.*S" "" { target c++17_down } 0 }
+// { dg-error "constraint failure" "" { target c++20 } 0 }
diff --git a/libstdc++-v3/testsuite/lib/prune.exp b/libstdc++-v3/testsuite/lib/prune.exp
index d457e97..6d0b77a 100644
--- a/libstdc++-v3/testsuite/lib/prune.exp
+++ b/libstdc++-v3/testsuite/lib/prune.exp
@@ -51,6 +51,7 @@ proc libstdc++-dg-prune { system text } {
     regsub -all "(^|\n)\[^\n\]*:   (recursively )?required \[^\n\]*" $text "" text
     regsub -all "(^|\n)\[^\n\]*:   . skipping \[0-9\]* instantiation contexts \[^\n\]*" $text "" text
     regsub -all "(^|\n)\[^\n\]*:   in .constexpr. expansion \[^\n\]*" $text "" text
+    regsub -all "(^|\n)\[^\n\]*:   in requirements  .with\[^\n\]*" $text "" text
     regsub -all "(^|\n)    inlined from \[^\n\]*" $text "" text
     # Why doesn't GCC need these to strip header context?
     regsub -all "(^|\n)In file included from \[^\n\]*" $text "" text
-- 
cgit v1.1


From 1d2f07ed4ce028a7c1f9b18f5d959f30213545ca Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Mon, 10 Oct 2022 15:06:53 +0100
Subject: libstdc++: Revert addition of constraints to
 make_signed/make_unsigned

Constraining the primary template makes it unusable in uninstantiated
contexts.

libstdc++-v3/ChangeLog:

	* include/std/type_traits (make_signed, make_unsigned): Remove
	constraints on primary template.
	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
	Undo changes to expected error in C++20 mode.
	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
	Likewise.
	* testsuite/24_iterators/range_access/range_access_cpp20_neg.cc:
	Likewise.
	* testsuite/20_util/make_signed/requirements/uninstantiated.cc:
	New test.
	* testsuite/20_util/make_unsigned/requirements/uninstantiated.cc:
	New test.
---
 libstdc++-v3/include/std/type_traits                              | 6 ------
 .../testsuite/20_util/make_signed/requirements/typedefs_neg.cc    | 3 +--
 .../testsuite/20_util/make_signed/requirements/uninstantiated.cc  | 8 ++++++++
 .../testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc  | 3 +--
 .../20_util/make_unsigned/requirements/uninstantiated.cc          | 8 ++++++++
 .../testsuite/24_iterators/range_access/range_access_cpp20_neg.cc | 3 +--
 6 files changed, 19 insertions(+), 12 deletions(-)
 create mode 100644 libstdc++-v3/testsuite/20_util/make_signed/requirements/uninstantiated.cc
 create mode 100644 libstdc++-v3/testsuite/20_util/make_unsigned/requirements/uninstantiated.cc

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits
index 6108b98..1d7c3b0 100644
--- a/libstdc++-v3/include/std/type_traits
+++ b/libstdc++-v3/include/std/type_traits
@@ -1802,9 +1802,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   // Primary template.
   /// make_unsigned
   template<typename _Tp>
-#if __cpp_concepts
-    requires is_integral<_Tp>::value || __is_enum(_Tp)
-#endif
     struct make_unsigned
     { typedef typename __make_unsigned_selector<_Tp>::__type type; };
 
@@ -1937,9 +1934,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   // Primary template.
   /// make_signed
   template<typename _Tp>
-#if __cpp_concepts
-    requires is_integral<_Tp>::value || __is_enum(_Tp)
-#endif
     struct make_signed
     { typedef typename __make_signed_selector<_Tp>::__type type; };
 
diff --git a/libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc b/libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc
index 88b8ae8..451eeb8 100644
--- a/libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc
@@ -43,5 +43,4 @@ void test01()
   using T8 = make_signed<float>::type; // { dg-error "here" }
 }
 
-// { dg-error "invalid use of incomplete type" "" { target c++17_down } 0 }
-// { dg-error "constraint failure" "" { target c++20 } 0 }
+// { dg-error "invalid use of incomplete type" "" { target *-*-* } 0 }
diff --git a/libstdc++-v3/testsuite/20_util/make_signed/requirements/uninstantiated.cc b/libstdc++-v3/testsuite/20_util/make_signed/requirements/uninstantiated.cc
new file mode 100644
index 0000000..3facf0c
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/make_signed/requirements/uninstantiated.cc
@@ -0,0 +1,8 @@
+// { dg-do compile { target c++11 } }
+#include <type_traits>
+
+// Check that we can name invalid specializations, just don't instantiate them.
+
+using X = std::make_signed<float>;
+using Y = std::make_signed<bool>;
+using Z = std::make_signed<void>;
diff --git a/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc b/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc
index 50f15e7..49d5209 100644
--- a/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc
@@ -43,5 +43,4 @@ void test01()
   using T8 = make_unsigned<float>::type; // { dg-error "here" }
 }
 
-// { dg-error "invalid use of incomplete type" "" { target c++17_down } 0 }
-// { dg-error "constraint failure" "" { target c++20 } 0 }
+// { dg-error "invalid use of incomplete type" "" { target *-*-* } 0 }
diff --git a/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/uninstantiated.cc b/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/uninstantiated.cc
new file mode 100644
index 0000000..9b86096
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/uninstantiated.cc
@@ -0,0 +1,8 @@
+// { dg-do compile { target c++11 } }
+#include <type_traits>
+
+// Check that we can name invalid specializations, just don't instantiate them.
+
+using X = std::make_unsigned<float>;
+using Y = std::make_unsigned<bool>;
+using Z = std::make_unsigned<void>;
diff --git a/libstdc++-v3/testsuite/24_iterators/range_access/range_access_cpp20_neg.cc b/libstdc++-v3/testsuite/24_iterators/range_access/range_access_cpp20_neg.cc
index 26c8ae0..c0825a5 100644
--- a/libstdc++-v3/testsuite/24_iterators/range_access/range_access_cpp20_neg.cc
+++ b/libstdc++-v3/testsuite/24_iterators/range_access/range_access_cpp20_neg.cc
@@ -46,5 +46,4 @@ test03()
   C c;
   std::ssize(c);  // { dg-error "no matching function" }
 }
-// { dg-error "incomplete type .*make_signed.*S" "" { target c++17_down } 0 }
-// { dg-error "constraint failure" "" { target c++20 } 0 }
+// { dg-error "incomplete type .*make_signed.*S" "" { target *-*-* } 0 }
-- 
cgit v1.1


From 27bfe54e975d12aac750f0702f716a4c1c0a81fe Mon Sep 17 00:00:00 2001
From: GCC Administrator <gccadmin@gcc.gnu.org>
Date: Tue, 11 Oct 2022 00:17:00 +0000
Subject: Daily bump.

---
 libstdc++-v3/ChangeLog | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 68f9a1d..58b011b 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,32 @@
+2022-10-10  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/type_traits (make_signed, make_unsigned): Remove
+	constraints on primary template.
+	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
+	Undo changes to expected error in C++20 mode.
+	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
+	Likewise.
+	* testsuite/24_iterators/range_access/range_access_cpp20_neg.cc:
+	Likewise.
+	* testsuite/20_util/make_signed/requirements/uninstantiated.cc:
+	New test.
+	* testsuite/20_util/make_unsigned/requirements/uninstantiated.cc:
+	New test.
+
+2022-10-10  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/type_traits (make_signed, make_unsigned): Add
+	specializations for cv bool. Add requires-clause for C++20 to
+	improve diagnostics for non-integral, non-enum cases.
+	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
+	Check cv bool.
+	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
+	Likewise.
+	* testsuite/24_iterators/range_access/range_access_cpp20_neg.cc:
+	Adjust expected errors for C++20 and later.
+	* testsuite/lib/prune.exp: Prune "in requirements  [with ...]"
+	lines from diagnostics.
+
 2022-10-07  Jonathan Wakely  <jwakely@redhat.com>
 
 	* acinclude.m4 (GLIBCXX_ENABLE_HOSTED): Add libstdcxx-hosted
-- 
cgit v1.1


From 0ecd0f1cc6f8f3ba818946a42b22c2ab61f46825 Mon Sep 17 00:00:00 2001
From: Olivier Hainque <hainque@adacore.com>
Date: Fri, 3 Dec 2021 17:50:56 +0000
Subject: Generic configury support for shared libs on VxWorks

This change adds the configury bits to activate the build of
shared libs on VxWorks ports configured with --enable-shared,
for libraries variants where this is generally supported (rtp,
code model !large - currently not compatible with -fPIC).

Set lt_cv_deplibs_check_method in libtool.m4, so the build of
libraries know how to establish dependencies.  This is useful in
configurations such as aarch64 where proper support of LSE relies
on accurate dependency information between libstdc++ and libgcc_s
to begin with.

Regenerate configure scripts to reflect libtool.m4 change.

2022-10-09  Olivier Hainque  <hainque@adacore.com>

	* libtool.m4 (*vxworks*): When enable_shared, set dynamic_linker
	and friends for rtp !large. Assume the linker has the required
	abilities and set lt_cv_deplibs_check_method.

gcc/
	* config.gcc (*vxworks*): Add t-slibgcc fragment
	if enable_shared.

libgcc/
	* config.host (*vxworks*): When enable_shared, add
	libgcc and crtstuff "shared" fragments for rtp except
	large code model.
	(aarch64*-wrs-vxworks7*): Remove t-slibgcc-libgcc from
	the list of fragments.

2022-10-09  Olivier Hainque  <hainque@adacore.com>

gcc/
	* configure: Regenerate.

libatomic/
	* configure: Regenerate.

libbacktrace/
	* configure: Regenerate.

libcc1/
	* configure: Regenerate.

libffi/
	* configure: Regenerate.

libgfortran/
	* configure: Regenerate.

libgomp/
	* configure: Regenerate.

libitm/
	* configure: Regenerate.

libobjc/
	* configure: Regenerate.

liboffloadmic/
	* configure: Regenerate.

liboffloadmic/
	* plugin/configure: Regenerate.

libphobos/
	* configure: Regenerate.

libquadmath/
	* configure: Regenerate.

libsanitizer/
	* configure: Regenerate.

libssp/
	* configure: Regenerate.

libstdc++-v3/
	* configure: Regenerate.

libvtv/
	* configure: Regenerate.

lto-plugin/
	* configure: Regenerate.

zlib/
	* configure: Regenerate.
---
 libstdc++-v3/configure | 48 ++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 2 deletions(-)

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 7ead77a..4bb1d73 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -7089,6 +7089,11 @@ sysv4 | sysv4.3*)
 tpf*)
   lt_cv_deplibs_check_method=pass_all
   ;;
+vxworks*)
+  # Assume VxWorks cross toolchains are built on Linux, possibly
+  # as canadian for Windows hosts.
+  lt_cv_deplibs_check_method=pass_all
+  ;;
 esac
 
 fi
@@ -11747,6 +11752,25 @@ uts4*)
   shlibpath_var=LD_LIBRARY_PATH
   ;;
 
+# Shared libraries for VwWorks, >= 7 only at this stage
+# and (fpic) still incompatible with "large" code models
+# in a few configurations. Only for RTP mode in any case,
+# and upon explicit request at configure time.
+vxworks7*)
+  dynamic_linker=no
+  case ${with_multisubdir}-${enable_shared} in
+    *large*)
+      ;;
+    *mrtp*-yes)
+      version_type=linux
+      need_lib_prefix=no
+      need_version=no
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+      soname_spec='${libname}${release}${shared_ext}$major'
+      dynamic_linker="$host_os module_loader"
+      ;;
+  esac
+  ;;
 *)
   dynamic_linker=no
   ;;
@@ -13874,8 +13898,9 @@ if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
         ;;
 
       vxworks*)
-        # FIXME: insert proper C++ library support
-        ld_shlibs_CXX=no
+        # For VxWorks ports, we assume the use of a GNU linker with
+        # standard elf conventions.
+        ld_shlibs_CXX=yes
         ;;
 
       *)
@@ -15426,6 +15451,25 @@ uts4*)
   shlibpath_var=LD_LIBRARY_PATH
   ;;
 
+# Shared libraries for VwWorks, >= 7 only at this stage
+# and (fpic) still incompatible with "large" code models
+# in a few configurations. Only for RTP mode in any case,
+# and upon explicit request at configure time.
+vxworks7*)
+  dynamic_linker=no
+  case ${with_multisubdir}-${enable_shared} in
+    *large*)
+      ;;
+    *mrtp*-yes)
+      version_type=linux
+      need_lib_prefix=no
+      need_version=no
+      library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
+      soname_spec='${libname}${release}${shared_ext}$major'
+      dynamic_linker="$host_os module_loader"
+      ;;
+  esac
+  ;;
 *)
   dynamic_linker=no
   ;;
-- 
cgit v1.1


From 637e3668fdc17c4e226538fb14f9fab225433d01 Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Wed, 5 Oct 2022 21:21:54 +0100
Subject: libstdc++: Allow emergency EH alloc pool size to be tuned [PR68606]

Implement a long-standing request to support tuning the size of the
emergency buffer for allocating exceptions after malloc fails, or to
disable that buffer entirely.

It's now possible to disable the dynamic allocation of the buffer and
use a fixed-size static buffer, via --enable-libstdcxx-static-eh-pool.
This is a built-time choice that is baked into libstdc++ and so affects
all code linked against that build of libstdc++.

The size of the pool can be set by --with-libstdcxx-eh-pool-obj-count=N
which is measured in units of sizeof(void*) not bytes. A given exception
type such as std::system_error depends on the target, so giving a size
in bytes wouldn't be portable across 16/32/64-bit targets.

When libstdc++ is configured to use a dynamic buffer, the size of that
buffer can now be tuned at runtime by setting the GLIBCXX_TUNABLES
environment variable (c.f. PR libstdc++/88264). The number of exceptions
to reserve space for is controlled by the "glibcxx.eh_pool.obj_count"
and "glibcxx.eh_pool.obj_size" tunables. The pool will be sized to be
able to allocate obj_count exceptions of size obj_size*sizeof(void*) and
obj_count "dependent" exceptions rethrown by std::rethrow_exception.

With the ability to tune the buffer size, we can reduce the default pool
size on 32-bit and 16-bit targets. Most users never need to throw 1kB
exceptions in parallel from hundreds of threads after malloc is OOM. The
users who do need that can use the tunables to select larger sizes.

The old defaults can be chosen at runtime by setting GLIBCXX_TUNABLES
to:
64-bit: glibcxx.eh_pool.obj_count=64:glibcxx.eh_pool.obj_size=112
32-bit: glibcxx.eh_pool.obj_count=32:glibcxx.eh_pool.obj_size=104

Or approximated by configuring with:
64-bit: --with-libstdcxx-eh-pool-obj-count=252
32-bit: --with-libstdcxx-eh-pool-obj-count=94

libstdc++-v3/ChangeLog:

	PR libstdc++/68606
	* Makefile.in: Regenerate.
	* acinclude.m4 (GLIBCXX_EMERGENCY_EH_ALLOC): New macro.
	* configure: Regenerate.
	* configure.ac: Use GLIBCXX_EMERGENCY_EH_ALLOC.
	* crossconfig.m4: Check for secure_getenv.
	* doc/Makefile.in: Regenerate.
	* doc/xml/manual/configure.xml: Document new configure options.
	* doc/xml/manual/evolution.xml: Document addition of tunables.
	* doc/xml/manual/using_exceptions.xml: Document emergency
	buffer and tunables.
	* doc/html/*: Regenerate.
	* include/Makefile.in: Regenerate.
	* libsupc++/Makefile.am: Use EH_POOL_FLAGS.
	* libsupc++/Makefile.in: Regenerate.
	* libsupc++/eh_alloc.cc (EMERGENCY_OBJ_SIZE): Define in units
	of sizeof(void*) not including the ABI's exception header.
	(EMERGENCY_OBJ_COUNT): Define as target-independent calculation
	based on word size.
	(MAX_OBJ_COUNT): Define macro for upper limit on pool size.
	(pool) [_GLIBCXX_EH_POOL_STATIC]: Use fixed-size buffer.
	(pool::buffer_size_in_bytes): New static member function.
	(pool::pool): Parse GLIBCXX_TUNABLES environment variable to set
	pool size at runtime.
	(pool::in_pool): Use std::less<void*> for total order.
	(__freeres) [_GLIBCXX_EH_POOL_STATIC]: Do nothing.
	(__cxa_free_exception, __cxa_free_dependent_exception): Add
	[[unlikely]] attributes.
	* po/Makefile.in: Regenerate.
	* python/Makefile.in: Regenerate.
	* src/Makefile.in: Regenerate.
	* src/c++11/Makefile.in: Regenerate.
	* src/c++17/Makefile.in: Regenerate.
	* src/c++20/Makefile.in: Regenerate.
	* src/c++98/Makefile.in: Regenerate.
	* src/filesystem/Makefile.in: Regenerate.
	* src/libbacktrace/Makefile.in: Regenerate.
	* testsuite/Makefile.in: Regenerate.
---
 libstdc++-v3/Makefile.in                           |   1 +
 libstdc++-v3/acinclude.m4                          |  45 +++++
 libstdc++-v3/configure                             |  67 +++++-
 libstdc++-v3/configure.ac                          |   3 +
 libstdc++-v3/crossconfig.m4                        |   1 +
 libstdc++-v3/doc/Makefile.in                       |   1 +
 libstdc++-v3/doc/html/index.html                   |   4 +-
 libstdc++-v3/doc/html/manual/api.html              |   3 +
 libstdc++-v3/doc/html/manual/appendix.html         |   2 +-
 libstdc++-v3/doc/html/manual/appendix_porting.html |   2 +-
 libstdc++-v3/doc/html/manual/configure.html        |  10 +-
 libstdc++-v3/doc/html/manual/index.html            |   4 +-
 libstdc++-v3/doc/html/manual/intro.html            |   2 +-
 libstdc++-v3/doc/html/manual/using.html            |   2 +-
 libstdc++-v3/doc/html/manual/using_exceptions.html |  77 ++++++-
 libstdc++-v3/doc/xml/manual/configure.xml          |  23 +++
 libstdc++-v3/doc/xml/manual/evolution.xml          |   9 +
 libstdc++-v3/doc/xml/manual/using_exceptions.xml   |  90 +++++++++
 libstdc++-v3/include/Makefile.in                   |   1 +
 libstdc++-v3/libsupc++/Makefile.am                 |   2 +-
 libstdc++-v3/libsupc++/Makefile.in                 |   3 +-
 libstdc++-v3/libsupc++/eh_alloc.cc                 | 225 +++++++++++++++------
 libstdc++-v3/po/Makefile.in                        |   1 +
 libstdc++-v3/python/Makefile.in                    |   1 +
 libstdc++-v3/src/Makefile.in                       |   1 +
 libstdc++-v3/src/c++11/Makefile.in                 |   1 +
 libstdc++-v3/src/c++17/Makefile.in                 |   1 +
 libstdc++-v3/src/c++20/Makefile.in                 |   1 +
 libstdc++-v3/src/c++98/Makefile.in                 |   1 +
 libstdc++-v3/src/filesystem/Makefile.in            |   1 +
 libstdc++-v3/src/libbacktrace/Makefile.in          |   1 +
 libstdc++-v3/testsuite/Makefile.in                 |   1 +
 32 files changed, 494 insertions(+), 93 deletions(-)

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/Makefile.in b/libstdc++-v3/Makefile.in
index 58a0acd..a7c2b60 100644
--- a/libstdc++-v3/Makefile.in
+++ b/libstdc++-v3/Makefile.in
@@ -240,6 +240,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4
index 719eab1..6523ba9 100644
--- a/libstdc++-v3/acinclude.m4
+++ b/libstdc++-v3/acinclude.m4
@@ -5092,6 +5092,51 @@ BACKTRACE_CPPFLAGS="$BACKTRACE_CPPFLAGS -DBACKTRACE_ELF_SIZE=$elfsize"
   GLIBCXX_CONDITIONAL(ENABLE_BACKTRACE, [test "$enable_libstdcxx_backtrace" = yes])
 ])
 
+dnl
+dnl Allow the emergency EH pool to be configured.
+dnl
+dnl --enable-libstdcxx-static-eh-pool will cause a fixed-size static buffer
+dnl to be used for allocating exceptions after malloc fails. The default is
+dnl to allocate a buffer using malloc
+dnl
+dnl --with-libstdcxx-eh-pool-obj-count=N will set the default size for the
+dnl buffer. For a static buffer that size is fixed permanently. For a dynamic
+dnl buffer it's the default, but it can be overridden from the environment.
+dnl
+dnl To set the default to approximately the same values as GCC 12,
+dnl use --with-libstdcxx-eh-pool-obj-count=94 for 32-bit targets,
+dnl and --with-libstdcxx-eh-pool-obj-count=252 for 64-bit targets.
+dnl
+dnl Defines:
+dnl  _GLIBCXX_EH_POOL_STATIC if a fixed-size static buffer should be used
+dnl  instead of allocating a buffer on startup.
+dnl  _GLIBCXX_EH_POOL_NOBJS to override the default EMERGENCY_OBJ_COUNT value.
+dnl
+AC_DEFUN([GLIBCXX_EMERGENCY_EH_ALLOC], [
+  eh_pool_static=
+  eh_pool_nobjs=
+  AC_ARG_ENABLE([libstdcxx-static-eh-pool],
+    AC_HELP_STRING([--enable-libstdcxx-static-eh-pool],
+		   [use a fixed-size static buffer for allocating exceptions if malloc fails]),
+    [if test "${enableval}" = yes; then
+      eh_pool_static="-D_GLIBCXX_EH_POOL_STATIC"
+      AC_MSG_NOTICE([EH pool using static buffer])
+    fi],)
+
+  AC_ARG_WITH([libstdcxx-eh-pool-obj-count],
+    AC_HELP_STRING([--with-libstdcxx-eh-pool-obj-count],
+		   [the number of exceptions that can be allocated from the pool if malloc fails]),
+    [if test "${withval}" -ge 0 2>/dev/null; then
+      eh_pool_obj_count="-D_GLIBCXX_EH_POOL_NOBJS=${withval}"
+      AC_MSG_NOTICE([EH pool object count: ${withval}])
+    else
+      AC_MSG_ERROR([EH pool obj count must be a non-negative integer: $withval])
+    fi],)
+
+  EH_POOL_FLAGS="$eh_pool_static $eh_pool_obj_count"
+  AC_SUBST(EH_POOL_FLAGS)
+])
+
 # Macros from the top-level gcc directory.
 m4_include([../config/gc++filt.m4])
 m4_include([../config/tls.m4])
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 4bb1d73..b564175 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -675,6 +675,7 @@ DOT
 DOXYGEN
 BUILD_INFO_FALSE
 BUILD_INFO_TRUE
+EH_POOL_FLAGS
 ENABLE_BACKTRACE_FALSE
 ENABLE_BACKTRACE_TRUE
 BACKTRACE_SUPPORTS_THREADS
@@ -958,6 +959,8 @@ with_default_libstdcxx_abi
 enable_libstdcxx_threads
 enable_libstdcxx_filesystem_ts
 enable_libstdcxx_backtrace
+enable_libstdcxx_static_eh_pool
+with_libstdcxx_eh_pool_obj_count
 enable_cet
 with_gxx_include_dir
 enable_version_specific_runtime_libs
@@ -1668,6 +1671,9 @@ Optional Features:
                           turns on ISO/IEC TS 18822 support [default=auto]
   --enable-libstdcxx-backtrace
                           turns on libbacktrace support [default=auto]
+  --enable-libstdcxx-static-eh-pool
+                          use a fixed-size static buffer for allocating
+                          exceptions if malloc fails
   --enable-cet            enable Intel CET in target libraries [default=auto]
   --enable-version-specific-runtime-libs
                           Specify that runtime libraries should be installed
@@ -1695,6 +1701,9 @@ Optional Packages:
   --with-system-libunwind use installed libunwind
   --with-default-libstdcxx-abi
                           set the std::string ABI to use by default
+  --with-libstdcxx-eh-pool-obj-count
+                          the number of exceptions that can be allocated from
+                          the pool if malloc fails
   --with-gxx-include-dir=DIR
                           installation directory for include files
   --with-toolexeclibdir=DIR
@@ -12227,7 +12236,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12206 "configure"
+#line 12215 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12333,7 +12342,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12312 "configure"
+#line 12321 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -16053,7 +16062,7 @@ $as_echo "$glibcxx_cv_atomic_long_long" >&6; }
   # Fake what AC_TRY_COMPILE does.
 
     cat > conftest.$ac_ext << EOF
-#line 16012 "configure"
+#line 16021 "configure"
 int main()
 {
   typedef bool atomic_type;
@@ -16088,7 +16097,7 @@ $as_echo "$glibcxx_cv_atomic_bool" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 16047 "configure"
+#line 16056 "configure"
 int main()
 {
   typedef short atomic_type;
@@ -16123,7 +16132,7 @@ $as_echo "$glibcxx_cv_atomic_short" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 16082 "configure"
+#line 16091 "configure"
 int main()
 {
   // NB: _Atomic_word not necessarily int.
@@ -16159,7 +16168,7 @@ $as_echo "$glibcxx_cv_atomic_int" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 16118 "configure"
+#line 16127 "configure"
 int main()
 {
   typedef long long atomic_type;
@@ -16315,7 +16324,7 @@ $as_echo "mutex" >&6; }
   # unnecessary for this test.
 
     cat > conftest.$ac_ext << EOF
-#line 16274 "configure"
+#line 16283 "configure"
 int main()
 {
   _Decimal32 d1;
@@ -16357,7 +16366,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
   # unnecessary for this test.
 
   cat > conftest.$ac_ext << EOF
-#line 16316 "configure"
+#line 16325 "configure"
 template<typename T1, typename T2>
   struct same
   { typedef T2 type; };
@@ -54268,6 +54277,17 @@ _ACEOF
 fi
 done
 
+    for ac_func in secure_getenv
+do :
+  ac_fn_c_check_func "$LINENO" "secure_getenv" "ac_cv_func_secure_getenv"
+if test "x$ac_cv_func_secure_getenv" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SECURE_GETENV 1
+_ACEOF
+
+fi
+done
+
 
 
 
@@ -71916,6 +71936,37 @@ $as_echo "7.1.0" >&6; }
   fi
 
 
+# For libsupc++/eh_alloc.cc defaults.
+
+  eh_pool_static=
+  eh_pool_nobjs=
+  # Check whether --enable-libstdcxx-static-eh-pool was given.
+if test "${enable_libstdcxx_static_eh_pool+set}" = set; then :
+  enableval=$enable_libstdcxx_static_eh_pool; if test "${enableval}" = yes; then
+      eh_pool_static="-D_GLIBCXX_EH_POOL_STATIC"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: EH pool using static buffer" >&5
+$as_echo "$as_me: EH pool using static buffer" >&6;}
+    fi
+fi
+
+
+
+# Check whether --with-libstdcxx-eh-pool-obj-count was given.
+if test "${with_libstdcxx_eh_pool_obj_count+set}" = set; then :
+  withval=$with_libstdcxx_eh_pool_obj_count; if test "${withval}" -ge 0 2>/dev/null; then
+      eh_pool_obj_count="-D_GLIBCXX_EH_POOL_NOBJS=${withval}"
+      { $as_echo "$as_me:${as_lineno-$LINENO}: EH pool object count: ${withval}" >&5
+$as_echo "$as_me: EH pool object count: ${withval}" >&6;}
+    else
+      as_fn_error $? "EH pool obj count must be a non-negative integer: $withval" "$LINENO" 5
+    fi
+fi
+
+
+  EH_POOL_FLAGS="$eh_pool_static $eh_pool_obj_count"
+
+
+
 # Define documentation rules conditionally.
 
 # See if makeinfo has been installed and is modern enough
diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac
index c05fcdd..42c4530 100644
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -538,6 +538,9 @@ GLIBCXX_CHECK_SIZE_T_MANGLING
 # Check which release added std::exception_ptr for the target
 GLIBCXX_CHECK_EXCEPTION_PTR_SYMVER
 
+# For libsupc++/eh_alloc.cc defaults.
+GLIBCXX_EMERGENCY_EH_ALLOC
+
 # Define documentation rules conditionally.
 
 # See if makeinfo has been installed and is modern enough
diff --git a/libstdc++-v3/crossconfig.m4 b/libstdc++-v3/crossconfig.m4
index 130f47f..b3269cb 100644
--- a/libstdc++-v3/crossconfig.m4
+++ b/libstdc++-v3/crossconfig.m4
@@ -187,6 +187,7 @@ case "${host}" in
     AC_CHECK_FUNCS(timespec_get)
     AC_CHECK_FUNCS(sockatmark)
     AC_CHECK_FUNCS(uselocale)
+    AC_CHECK_FUNCS(secure_getenv)
     AM_ICONV
     ;;
   *-mingw32*)
diff --git a/libstdc++-v3/doc/Makefile.in b/libstdc++-v3/doc/Makefile.in
index 6aaceea..469a608 100644
--- a/libstdc++-v3/doc/Makefile.in
+++ b/libstdc++-v3/doc/Makefile.in
@@ -199,6 +199,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/doc/html/index.html b/libstdc++-v3/doc/html/index.html
index 1e0cecb..ce951e6 100644
--- a/libstdc++-v3/doc/html/index.html
+++ b/libstdc++-v3/doc/html/index.html
@@ -23,7 +23,7 @@
     </p></div></div></div><hr /></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="book"><a href="manual/index.html">The GNU C++ Library Manual</a></span></dt><dd><dl><dt><span class="part"><a href="manual/intro.html">I. 
   Introduction
   
-</a></span></dt><dd><dl><dt><span class="chapter"><a href="manual/status.html">1. Status</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.1998.status">Implementation Status</a></span></dt><dt><span class="section"><a href="manual/status.html#iso.1998.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.2011">C++ 2011</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2011.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.2014">C++ 2014</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2014.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2014.filesystemts">Filesystem TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.2017">C++ 2017</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2017.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2017.par2ts">Parallelism 2 TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.2020">C++ 2020</a></span></dt><dt><span class="section"><a href="manual/status.html#status.iso.2023">C++ 2023</a></span></dt><dt><span class="section"><a href="manual/status.html#status.iso.tr1">C++ TR1</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.tr1.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.tr24733">C++ TR 24733</a></span></dt><dt><span class="section"><a href="manual/status.html#status.iso.specfun">C++ IS 29124</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.specfun.specific">Implementation Specific Behavior</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="manual/license.html">License</a></span></dt><dd><dl><dt><span class="section"><a href="manual/license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="section"><a href="manual/license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="section"><a href="manual/bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="section"><a href="manual/bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="section"><a href="manual/bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="manual/setup.html">2. Setup</a></span></dt><dd><dl><dt><span class="section"><a href="manual/setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="manual/configure.html">Configure</a></span></dt><dt><span class="section"><a href="manual/make.html">Make</a></span></dt></dl></dd><dt><span class="chapter"><a href="manual/using.html">3. Using</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using.html#manual.intro.using.flags">Command Options</a></span></dt><dt><span class="section"><a href="manual/using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="section"><a href="manual/using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="section"><a href="manual/using_headers.html#manual.intro.using.headers.cheaders">The C Headers and <code class="code">namespace std</code></a></span></dt><dt><span class="section"><a href="manual/using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_macros.html">Macros</a></span></dt><dt><span class="section"><a href="manual/using_dual_abi.html">Dual ABI</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_dual_abi.html#manual.intro.using.abi.trouble">Troubleshooting</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="section"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="section"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_dynamic_or_shared.html">Linking</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_dynamic_or_shared.html#manual.intro.using.linkage.freestanding">Almost Nothing</a></span></dt><dt><span class="section"><a href="manual/using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic">Finding Dynamic or Shared Libraries</a></span></dt><dt><span class="section"><a href="manual/using_dynamic_or_shared.html#manual.intro.using.linkage.experimental">Experimental Library Extensions</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_concurrency.html#concurrency.io.structure">Structure</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#concurrency.io.defaults">Defaults</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#concurrency.io.future">Future</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#concurrency.io.alt">Alternatives</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="section"><a href="manual/using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="section"><a href="manual/using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="section"><a href="manual/using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_exceptions.html#using.exception.compat.c">With <code class="literal">C</code></a></span></dt><dt><span class="section"><a href="manual/using_exceptions.html#using.exception.compat.posix">With <code class="literal">POSIX</code> thread cancellation</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="manual/debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="section"><a href="manual/debug.html#debug.compiler">Using <span class="command"><strong>g++</strong></span></a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dd><dl><dt><span class="section"><a href="manual/debug.html#debug.memory.mtalloc">Non-memory leaks in Pool and MT allocators</a></span></dt></dl></dd><dt><span class="section"><a href="manual/debug.html#debug.races">Data Race Hunting</a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.gdb">Using <span class="command"><strong>gdb</strong></span></a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="part"><a href="manual/std_contents.html">II. 
+</a></span></dt><dd><dl><dt><span class="chapter"><a href="manual/status.html">1. Status</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.1998.status">Implementation Status</a></span></dt><dt><span class="section"><a href="manual/status.html#iso.1998.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.2011">C++ 2011</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2011.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.2014">C++ 2014</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2014.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2014.filesystemts">Filesystem TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.2017">C++ 2017</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2017.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.2017.par2ts">Parallelism 2 TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.2020">C++ 2020</a></span></dt><dt><span class="section"><a href="manual/status.html#status.iso.2023">C++ 2023</a></span></dt><dt><span class="section"><a href="manual/status.html#status.iso.tr1">C++ TR1</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.tr1.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="manual/status.html#status.iso.tr24733">C++ TR 24733</a></span></dt><dt><span class="section"><a href="manual/status.html#status.iso.specfun">C++ IS 29124</a></span></dt><dd><dl><dt><span class="section"><a href="manual/status.html#iso.specfun.specific">Implementation Specific Behavior</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="manual/license.html">License</a></span></dt><dd><dl><dt><span class="section"><a href="manual/license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="section"><a href="manual/license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="section"><a href="manual/bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="section"><a href="manual/bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="section"><a href="manual/bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="manual/setup.html">2. Setup</a></span></dt><dd><dl><dt><span class="section"><a href="manual/setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="manual/configure.html">Configure</a></span></dt><dt><span class="section"><a href="manual/make.html">Make</a></span></dt></dl></dd><dt><span class="chapter"><a href="manual/using.html">3. Using</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using.html#manual.intro.using.flags">Command Options</a></span></dt><dt><span class="section"><a href="manual/using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="section"><a href="manual/using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="section"><a href="manual/using_headers.html#manual.intro.using.headers.cheaders">The C Headers and <code class="code">namespace std</code></a></span></dt><dt><span class="section"><a href="manual/using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_macros.html">Macros</a></span></dt><dt><span class="section"><a href="manual/using_dual_abi.html">Dual ABI</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_dual_abi.html#manual.intro.using.abi.trouble">Troubleshooting</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="section"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="section"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_dynamic_or_shared.html">Linking</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_dynamic_or_shared.html#manual.intro.using.linkage.freestanding">Almost Nothing</a></span></dt><dt><span class="section"><a href="manual/using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic">Finding Dynamic or Shared Libraries</a></span></dt><dt><span class="section"><a href="manual/using_dynamic_or_shared.html#manual.intro.using.linkage.experimental">Experimental Library Extensions</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_concurrency.html#concurrency.io.structure">Structure</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#concurrency.io.defaults">Defaults</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#concurrency.io.future">Future</a></span></dt><dt><span class="section"><a href="manual/using_concurrency.html#concurrency.io.alt">Alternatives</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="section"><a href="manual/using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="section"><a href="manual/using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="section"><a href="manual/using_exceptions.html#intro.using.exception.alloc">Memory allocation</a></span></dt><dt><span class="section"><a href="manual/using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="section"><a href="manual/using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="manual/using_exceptions.html#using.exception.compat.c">With <code class="literal">C</code></a></span></dt><dt><span class="section"><a href="manual/using_exceptions.html#using.exception.compat.posix">With <code class="literal">POSIX</code> thread cancellation</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="manual/debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="section"><a href="manual/debug.html#debug.compiler">Using <span class="command"><strong>g++</strong></span></a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dd><dl><dt><span class="section"><a href="manual/debug.html#debug.memory.mtalloc">Non-memory leaks in Pool and MT allocators</a></span></dt></dl></dd><dt><span class="section"><a href="manual/debug.html#debug.races">Data Race Hunting</a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.gdb">Using <span class="command"><strong>gdb</strong></span></a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="section"><a href="manual/debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="part"><a href="manual/std_contents.html">II. 
     Standard Contents
   </a></span></dt><dd><dl><dt><span class="chapter"><a href="manual/support.html">4. 
   Support
@@ -142,7 +142,7 @@
     Existing tests
 </a></span></dt><dt><span class="section"><a href="manual/test.html#test.exception.safety.containers">
 C++11 Requirements Test Sequence Descriptions
-</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="manual/abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="manual/abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="manual/abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="manual/abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="manual/abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="manual/abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="manual/api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="manual/api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="manual/api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="manual/api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="manual/api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="manual/api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="manual/backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="manual/backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="manual/backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>.
+</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="manual/abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="manual/abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="manual/abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="manual/abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="manual/abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="manual/abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="manual/abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="manual/api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="manual/api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="manual/api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="manual/api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="manual/api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="manual/api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt><dt><span class="section"><a href="manual/api.html#api.rel_131"><code class="constant">13</code></a></span></dt></dl></dd><dt><span class="section"><a href="manual/backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="manual/backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="manual/backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>.
 </a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.third.streamattach">
 No <code class="code">stream::attach(int fd)</code>
 </a></span></dt><dt><span class="section"><a href="manual/backwards.html#backwards.third.support_cxx98">
diff --git a/libstdc++-v3/doc/html/manual/api.html b/libstdc++-v3/doc/html/manual/api.html
index 604380e..d985767 100644
--- a/libstdc++-v3/doc/html/manual/api.html
+++ b/libstdc++-v3/doc/html/manual/api.html
@@ -473,4 +473,7 @@ the process.
 </p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_123"></a><code class="constant">12.3</code></h3></div></div></div><p>
 Calling a <code class="code">std::bind</code> result as volatile is ill-formed for C++20
 and later.
+</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="api.rel_131"></a><code class="constant">13</code></h3></div></div></div><p>
+Tunables <span style="color: red">&lt;variable&gt;glibcxx.eh_pool.obj_count&lt;/variable&gt;</span> and
+<span style="color: red">&lt;variable&gt;glibcxx.eh_pool.obj_size&lt;/variable&gt;</span> were added.
 </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="abi.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendix_porting.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="backwards.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">ABI Policy and Guidelines </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Backwards Compatibility</td></tr></table></div></body></html>
\ No newline at end of file
diff --git a/libstdc++-v3/doc/html/manual/appendix.html b/libstdc++-v3/doc/html/manual/appendix.html
index c563372..3f8bac0 100644
--- a/libstdc++-v3/doc/html/manual/appendix.html
+++ b/libstdc++-v3/doc/html/manual/appendix.html
@@ -16,7 +16,7 @@
     Existing tests
 </a></span></dt><dt><span class="section"><a href="test.html#test.exception.safety.containers">
 C++11 Requirements Test Sequence Descriptions
-</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>.
+</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_131"><code class="constant">13</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>.
 </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.streamattach">
 No <code class="code">stream::attach(int fd)</code>
 </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.support_cxx98">
diff --git a/libstdc++-v3/doc/html/manual/appendix_porting.html b/libstdc++-v3/doc/html/manual/appendix_porting.html
index 55d3f23..4b3f069 100644
--- a/libstdc++-v3/doc/html/manual/appendix_porting.html
+++ b/libstdc++-v3/doc/html/manual/appendix_porting.html
@@ -14,7 +14,7 @@
     Existing tests
 </a></span></dt><dt><span class="section"><a href="test.html#test.exception.safety.containers">
 C++11 Requirements Test Sequence Descriptions
-</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>.
+</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_131"><code class="constant">13</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>.
 </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.streamattach">
 No <code class="code">stream::attach(int fd)</code>
 </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.support_cxx98">
diff --git a/libstdc++-v3/doc/html/manual/configure.html b/libstdc++-v3/doc/html/manual/configure.html
index 31c4da8..66adc7d 100644
--- a/libstdc++-v3/doc/html/manual/configure.html
+++ b/libstdc++-v3/doc/html/manual/configure.html
@@ -220,7 +220,7 @@
      <span class="emphasis"><em>freestanding</em></span> environment, in which only a
      minimal set of headers are provided.  This option builds such an
      environment.
-     </p></dd><dt><span class="term"><code class="code">--disable-libstdcxx-verbose</code></span></dt><dd><p>
+     </p></dd><dt><span class="term"><code class="code">--disable-libstdcxx-hosted</code></span></dt><dd><p>This is an alias for <code class="code">--disable-hosted-libstdcxx</code>.</p></dd><dt><span class="term"><code class="code">--disable-libstdcxx-verbose</code></span></dt><dd><p>
      By default, the library is configured to write descriptive messages
      to standard error for certain events such as calling a pure virtual
      function or the invocation of the standard terminate handler.  Those
@@ -271,4 +271,12 @@
       as the usual libstdc++ and libsupc++ libraries. This is enabled by
       default on select POSIX targets where it is known to work and disabled
       otherwise.
+    </p></dd><dt><span class="term"><code class="code">--enable-libstdcxx-static-eh-pool</code></span></dt><dd><p>Use a fixed-size static buffer for the emergency exception handling
+      pool (see <a class="xref" href="using_exceptions.html#intro.using.exception.alloc" title="Memory allocation">Memory allocation for exceptions</a>). The default
+      is to allocate the pool on program startup using <code class="code">malloc</code>.
+      With this option, a static buffer will be provided by libstdc++ instead.
+      This does not change the library ABI.
+    </p></dd><dt><span class="term"><code class="code">--with-libstdcxx-eh-pool-obj-count=NUM</code></span></dt><dd><p>Set the size of the emergency exception handling pool. NUM is the
+      number of simultaneous allocated exceptions to support.
+      This does not change the library ABI.
     </p></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="setup.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="setup.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="make.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 2. Setup </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Make</td></tr></table></div></body></html>
\ No newline at end of file
diff --git a/libstdc++-v3/doc/html/manual/index.html b/libstdc++-v3/doc/html/manual/index.html
index 2949509..292afde 100644
--- a/libstdc++-v3/doc/html/manual/index.html
+++ b/libstdc++-v3/doc/html/manual/index.html
@@ -4,7 +4,7 @@
     </p></div></div><hr /></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="part"><a href="intro.html">I. 
   Introduction
   
-</a></span></dt><dd><dl><dt><span class="chapter"><a href="status.html">1. Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.1998.status">Implementation Status</a></span></dt><dt><span class="section"><a href="status.html#iso.1998.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2011">C++ 2011</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2011.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2014">C++ 2014</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.filesystemts">Filesystem TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2017">C++ 2017</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.par2ts">Parallelism 2 TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2020">C++ 2020</a></span></dt><dt><span class="section"><a href="status.html#status.iso.2023">C++ 2023</a></span></dt><dt><span class="section"><a href="status.html#status.iso.tr1">C++ TR1</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.tr1.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.tr24733">C++ TR 24733</a></span></dt><dt><span class="section"><a href="status.html#status.iso.specfun">C++ IS 29124</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.specfun.specific">Implementation Specific Behavior</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="license.html">License</a></span></dt><dd><dl><dt><span class="section"><a href="license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="section"><a href="license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="section"><a href="bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="setup.html">2. Setup</a></span></dt><dd><dl><dt><span class="section"><a href="setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="configure.html">Configure</a></span></dt><dt><span class="section"><a href="make.html">Make</a></span></dt></dl></dd><dt><span class="chapter"><a href="using.html">3. Using</a></span></dt><dd><dl><dt><span class="section"><a href="using.html#manual.intro.using.flags">Command Options</a></span></dt><dt><span class="section"><a href="using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.cheaders">The C Headers and <code class="code">namespace std</code></a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="section"><a href="using_macros.html">Macros</a></span></dt><dt><span class="section"><a href="using_dual_abi.html">Dual ABI</a></span></dt><dd><dl><dt><span class="section"><a href="using_dual_abi.html#manual.intro.using.abi.trouble">Troubleshooting</a></span></dt></dl></dd><dt><span class="section"><a href="using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="section"><a href="using_dynamic_or_shared.html">Linking</a></span></dt><dd><dl><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.freestanding">Almost Nothing</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic">Finding Dynamic or Shared Libraries</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.experimental">Experimental Library Extensions</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#concurrency.io.structure">Structure</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.defaults">Defaults</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.future">Future</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.alt">Alternatives</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="section"><a href="using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.c">With <code class="literal">C</code></a></span></dt><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.posix">With <code class="literal">POSIX</code> thread cancellation</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.compiler">Using <span class="command"><strong>g++</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="section"><a href="debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.memory.mtalloc">Non-memory leaks in Pool and MT allocators</a></span></dt></dl></dd><dt><span class="section"><a href="debug.html#debug.races">Data Race Hunting</a></span></dt><dt><span class="section"><a href="debug.html#debug.gdb">Using <span class="command"><strong>gdb</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="section"><a href="debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="section"><a href="debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="part"><a href="std_contents.html">II. 
+</a></span></dt><dd><dl><dt><span class="chapter"><a href="status.html">1. Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.1998.status">Implementation Status</a></span></dt><dt><span class="section"><a href="status.html#iso.1998.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2011">C++ 2011</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2011.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2014">C++ 2014</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.filesystemts">Filesystem TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2017">C++ 2017</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.par2ts">Parallelism 2 TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2020">C++ 2020</a></span></dt><dt><span class="section"><a href="status.html#status.iso.2023">C++ 2023</a></span></dt><dt><span class="section"><a href="status.html#status.iso.tr1">C++ TR1</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.tr1.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.tr24733">C++ TR 24733</a></span></dt><dt><span class="section"><a href="status.html#status.iso.specfun">C++ IS 29124</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.specfun.specific">Implementation Specific Behavior</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="license.html">License</a></span></dt><dd><dl><dt><span class="section"><a href="license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="section"><a href="license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="section"><a href="bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="setup.html">2. Setup</a></span></dt><dd><dl><dt><span class="section"><a href="setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="configure.html">Configure</a></span></dt><dt><span class="section"><a href="make.html">Make</a></span></dt></dl></dd><dt><span class="chapter"><a href="using.html">3. Using</a></span></dt><dd><dl><dt><span class="section"><a href="using.html#manual.intro.using.flags">Command Options</a></span></dt><dt><span class="section"><a href="using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.cheaders">The C Headers and <code class="code">namespace std</code></a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="section"><a href="using_macros.html">Macros</a></span></dt><dt><span class="section"><a href="using_dual_abi.html">Dual ABI</a></span></dt><dd><dl><dt><span class="section"><a href="using_dual_abi.html#manual.intro.using.abi.trouble">Troubleshooting</a></span></dt></dl></dd><dt><span class="section"><a href="using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="section"><a href="using_dynamic_or_shared.html">Linking</a></span></dt><dd><dl><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.freestanding">Almost Nothing</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic">Finding Dynamic or Shared Libraries</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.experimental">Experimental Library Extensions</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#concurrency.io.structure">Structure</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.defaults">Defaults</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.future">Future</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.alt">Alternatives</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="section"><a href="using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.alloc">Memory allocation</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.c">With <code class="literal">C</code></a></span></dt><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.posix">With <code class="literal">POSIX</code> thread cancellation</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.compiler">Using <span class="command"><strong>g++</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="section"><a href="debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.memory.mtalloc">Non-memory leaks in Pool and MT allocators</a></span></dt></dl></dd><dt><span class="section"><a href="debug.html#debug.races">Data Race Hunting</a></span></dt><dt><span class="section"><a href="debug.html#debug.gdb">Using <span class="command"><strong>gdb</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="section"><a href="debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="section"><a href="debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="part"><a href="std_contents.html">II. 
     Standard Contents
   </a></span></dt><dd><dl><dt><span class="chapter"><a href="support.html">4. 
   Support
@@ -123,7 +123,7 @@
     Existing tests
 </a></span></dt><dt><span class="section"><a href="test.html#test.exception.safety.containers">
 C++11 Requirements Test Sequence Descriptions
-</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>.
+</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="section"><a href="abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning">Versioning</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.versioning.goals">Goals</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.history">History</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.config">Configuring</a></span></dt><dt><span class="section"><a href="abi.html#abi.versioning.active">Checking Active</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="section"><a href="abi.html#abi.impl">Implementation</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing">Testing</a></span></dt><dd><dl><dt><span class="section"><a href="abi.html#abi.testing.single">Single ABI Testing</a></span></dt><dt><span class="section"><a href="abi.html#abi.testing.multi">Multiple ABI Testing</a></span></dt></dl></dd><dt><span class="section"><a href="abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="section"><a href="api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_300"><code class="constant">3.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_310"><code class="constant">3.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_320"><code class="constant">3.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_330"><code class="constant">3.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_340"><code class="constant">3.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_400"><code class="constant">4.0</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_410"><code class="constant">4.1</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_420"><code class="constant">4.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_430"><code class="constant">4.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_440"><code class="constant">4.4</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_450"><code class="constant">4.5</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_460"><code class="constant">4.6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_470"><code class="constant">4.7</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_480"><code class="constant">4.8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_490"><code class="constant">4.9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_51"><code class="constant">5</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_53"><code class="constant">5.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_61"><code class="constant">6</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_71"><code class="constant">7</code></a></span></dt><dd><dl><dt><span class="section"><a href="api.html#api.rel_72"><code class="constant">7.2</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_73"><code class="constant">7.3</code></a></span></dt></dl></dd><dt><span class="section"><a href="api.html#api.rel_81"><code class="constant">8</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_91"><code class="constant">9</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_101"><code class="constant">10</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_111"><code class="constant">11</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_121"><code class="constant">12</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_123"><code class="constant">12.3</code></a></span></dt><dt><span class="section"><a href="api.html#api.rel_131"><code class="constant">13</code></a></span></dt></dl></dd><dt><span class="section"><a href="backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.first">First</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.second">Second</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third">Third</a></span></dt><dd><dl><dt><span class="section"><a href="backwards.html#backwards.third.headers">Pre-ISO headers removed</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.hash">Extension headers hash_map, hash_set moved to ext or backwards</a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.nocreate_noreplace">No <code class="code">ios::nocreate/ios::noreplace</code>.
 </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.streamattach">
 No <code class="code">stream::attach(int fd)</code>
 </a></span></dt><dt><span class="section"><a href="backwards.html#backwards.third.support_cxx98">
diff --git a/libstdc++-v3/doc/html/manual/intro.html b/libstdc++-v3/doc/html/manual/intro.html
index 1a82344..3027cb6 100644
--- a/libstdc++-v3/doc/html/manual/intro.html
+++ b/libstdc++-v3/doc/html/manual/intro.html
@@ -5,4 +5,4 @@
 </th></tr><tr><td width="20%" align="left"><a accesskey="p" href="index.html">Prev</a> </td><th width="60%" align="center">The GNU C++ Library Manual</th><td width="20%" align="right"> <a accesskey="n" href="status.html">Next</a></td></tr></table><hr /></div><div class="part"><div class="titlepage"><div><div><h1 class="title"><a id="manual.intro"></a>Part I. 
   Introduction
   <a id="id-1.3.3.1.1.1" class="indexterm"></a>
-</h1></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="chapter"><a href="status.html">1. Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.1998.status">Implementation Status</a></span></dt><dt><span class="section"><a href="status.html#iso.1998.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2011">C++ 2011</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2011.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2014">C++ 2014</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.filesystemts">Filesystem TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2017">C++ 2017</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.par2ts">Parallelism 2 TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2020">C++ 2020</a></span></dt><dt><span class="section"><a href="status.html#status.iso.2023">C++ 2023</a></span></dt><dt><span class="section"><a href="status.html#status.iso.tr1">C++ TR1</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.tr1.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.tr24733">C++ TR 24733</a></span></dt><dt><span class="section"><a href="status.html#status.iso.specfun">C++ IS 29124</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.specfun.specific">Implementation Specific Behavior</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="license.html">License</a></span></dt><dd><dl><dt><span class="section"><a href="license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="section"><a href="license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="section"><a href="bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="setup.html">2. Setup</a></span></dt><dd><dl><dt><span class="section"><a href="setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="configure.html">Configure</a></span></dt><dt><span class="section"><a href="make.html">Make</a></span></dt></dl></dd><dt><span class="chapter"><a href="using.html">3. Using</a></span></dt><dd><dl><dt><span class="section"><a href="using.html#manual.intro.using.flags">Command Options</a></span></dt><dt><span class="section"><a href="using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.cheaders">The C Headers and <code class="code">namespace std</code></a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="section"><a href="using_macros.html">Macros</a></span></dt><dt><span class="section"><a href="using_dual_abi.html">Dual ABI</a></span></dt><dd><dl><dt><span class="section"><a href="using_dual_abi.html#manual.intro.using.abi.trouble">Troubleshooting</a></span></dt></dl></dd><dt><span class="section"><a href="using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="section"><a href="using_dynamic_or_shared.html">Linking</a></span></dt><dd><dl><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.freestanding">Almost Nothing</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic">Finding Dynamic or Shared Libraries</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.experimental">Experimental Library Extensions</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#concurrency.io.structure">Structure</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.defaults">Defaults</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.future">Future</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.alt">Alternatives</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="section"><a href="using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.c">With <code class="literal">C</code></a></span></dt><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.posix">With <code class="literal">POSIX</code> thread cancellation</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.compiler">Using <span class="command"><strong>g++</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="section"><a href="debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.memory.mtalloc">Non-memory leaks in Pool and MT allocators</a></span></dt></dl></dd><dt><span class="section"><a href="debug.html#debug.races">Data Race Hunting</a></span></dt><dt><span class="section"><a href="debug.html#debug.gdb">Using <span class="command"><strong>gdb</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="section"><a href="debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="section"><a href="debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt></dl></dd></dl></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="index.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="index.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="status.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">The GNU C++ Library Manual </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 1. Status</td></tr></table></div></body></html>
\ No newline at end of file
+</h1></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="chapter"><a href="status.html">1. Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.1998.status">Implementation Status</a></span></dt><dt><span class="section"><a href="status.html#iso.1998.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2011">C++ 2011</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2011.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.2014">C++ 2014</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2014.filesystemts">Filesystem TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2017">C++ 2017</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.specific">Implementation Specific Behavior</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.2017.par2ts">Parallelism 2 TS</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="status.html#status.iso.2020">C++ 2020</a></span></dt><dt><span class="section"><a href="status.html#status.iso.2023">C++ 2023</a></span></dt><dt><span class="section"><a href="status.html#status.iso.tr1">C++ TR1</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.tr1.specific">Implementation Specific Behavior</a></span></dt></dl></dd><dt><span class="section"><a href="status.html#status.iso.tr24733">C++ TR 24733</a></span></dt><dt><span class="section"><a href="status.html#status.iso.specfun">C++ IS 29124</a></span></dt><dd><dl><dt><span class="section"><a href="status.html#iso.specfun.specific">Implementation Specific Behavior</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="license.html">License</a></span></dt><dd><dl><dt><span class="section"><a href="license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="section"><a href="license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="section"><a href="bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="section"><a href="bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="setup.html">2. Setup</a></span></dt><dd><dl><dt><span class="section"><a href="setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="configure.html">Configure</a></span></dt><dt><span class="section"><a href="make.html">Make</a></span></dt></dl></dd><dt><span class="chapter"><a href="using.html">3. Using</a></span></dt><dd><dl><dt><span class="section"><a href="using.html#manual.intro.using.flags">Command Options</a></span></dt><dt><span class="section"><a href="using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.cheaders">The C Headers and <code class="code">namespace std</code></a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="section"><a href="using_macros.html">Macros</a></span></dt><dt><span class="section"><a href="using_dual_abi.html">Dual ABI</a></span></dt><dd><dl><dt><span class="section"><a href="using_dual_abi.html#manual.intro.using.abi.trouble">Troubleshooting</a></span></dt></dl></dd><dt><span class="section"><a href="using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="section"><a href="using_dynamic_or_shared.html">Linking</a></span></dt><dd><dl><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.freestanding">Almost Nothing</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic">Finding Dynamic or Shared Libraries</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.experimental">Experimental Library Extensions</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#concurrency.io.structure">Structure</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.defaults">Defaults</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.future">Future</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.alt">Alternatives</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="section"><a href="using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.alloc">Memory allocation</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.c">With <code class="literal">C</code></a></span></dt><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.posix">With <code class="literal">POSIX</code> thread cancellation</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.compiler">Using <span class="command"><strong>g++</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="section"><a href="debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.memory.mtalloc">Non-memory leaks in Pool and MT allocators</a></span></dt></dl></dd><dt><span class="section"><a href="debug.html#debug.races">Data Race Hunting</a></span></dt><dt><span class="section"><a href="debug.html#debug.gdb">Using <span class="command"><strong>gdb</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="section"><a href="debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="section"><a href="debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt></dl></dd></dl></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="index.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="index.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="status.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">The GNU C++ Library Manual </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 1. Status</td></tr></table></div></body></html>
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diff --git a/libstdc++-v3/doc/html/manual/using.html b/libstdc++-v3/doc/html/manual/using.html
index 08facff..f2dc207 100644
--- a/libstdc++-v3/doc/html/manual/using.html
+++ b/libstdc++-v3/doc/html/manual/using.html
@@ -2,7 +2,7 @@
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 3. Using</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><meta name="keywords" content="ISO C++, library" /><meta name="keywords" content="ISO C++, runtime, library" /><link rel="home" href="../index.html" title="The GNU C++ Library" /><link rel="up" href="intro.html" title="Part I.  Introduction" /><link rel="prev" href="make.html" title="Make" /><link rel="next" href="using_headers.html" title="Headers" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 3. Using</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="make.html">Prev</a> </td><th width="60%" align="center">Part I. 
   Introduction
   
-</th><td width="20%" align="right"> <a accesskey="n" href="using_headers.html">Next</a></td></tr></table><hr /></div><div class="chapter"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.using"></a>Chapter 3. Using</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="section"><a href="using.html#manual.intro.using.flags">Command Options</a></span></dt><dt><span class="section"><a href="using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.cheaders">The C Headers and <code class="code">namespace std</code></a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="section"><a href="using_macros.html">Macros</a></span></dt><dt><span class="section"><a href="using_dual_abi.html">Dual ABI</a></span></dt><dd><dl><dt><span class="section"><a href="using_dual_abi.html#manual.intro.using.abi.trouble">Troubleshooting</a></span></dt></dl></dd><dt><span class="section"><a href="using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="section"><a href="using_dynamic_or_shared.html">Linking</a></span></dt><dd><dl><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.freestanding">Almost Nothing</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic">Finding Dynamic or Shared Libraries</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.experimental">Experimental Library Extensions</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#concurrency.io.structure">Structure</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.defaults">Defaults</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.future">Future</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.alt">Alternatives</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="section"><a href="using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.c">With <code class="literal">C</code></a></span></dt><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.posix">With <code class="literal">POSIX</code> thread cancellation</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.compiler">Using <span class="command"><strong>g++</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="section"><a href="debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.memory.mtalloc">Non-memory leaks in Pool and MT allocators</a></span></dt></dl></dd><dt><span class="section"><a href="debug.html#debug.races">Data Race Hunting</a></span></dt><dt><span class="section"><a href="debug.html#debug.gdb">Using <span class="command"><strong>gdb</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="section"><a href="debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="section"><a href="debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt></dl></dd></dl></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.using.flags"></a>Command Options</h2></div></div></div><p>
+</th><td width="20%" align="right"> <a accesskey="n" href="using_headers.html">Next</a></td></tr></table><hr /></div><div class="chapter"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.using"></a>Chapter 3. Using</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="section"><a href="using.html#manual.intro.using.flags">Command Options</a></span></dt><dt><span class="section"><a href="using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.cheaders">The C Headers and <code class="code">namespace std</code></a></span></dt><dt><span class="section"><a href="using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="section"><a href="using_macros.html">Macros</a></span></dt><dt><span class="section"><a href="using_dual_abi.html">Dual ABI</a></span></dt><dd><dl><dt><span class="section"><a href="using_dual_abi.html#manual.intro.using.abi.trouble">Troubleshooting</a></span></dt></dl></dd><dt><span class="section"><a href="using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="section"><a href="using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="section"><a href="using_dynamic_or_shared.html">Linking</a></span></dt><dd><dl><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.freestanding">Almost Nothing</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic">Finding Dynamic or Shared Libraries</a></span></dt><dt><span class="section"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.experimental">Experimental Library Extensions</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dd><dl><dt><span class="section"><a href="using_concurrency.html#concurrency.io.structure">Structure</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.defaults">Defaults</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.future">Future</a></span></dt><dt><span class="section"><a href="using_concurrency.html#concurrency.io.alt">Alternatives</a></span></dt></dl></dd><dt><span class="section"><a href="using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="section"><a href="using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.alloc">Memory allocation</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="section"><a href="using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt><dd><dl><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.c">With <code class="literal">C</code></a></span></dt><dt><span class="section"><a href="using_exceptions.html#using.exception.compat.posix">With <code class="literal">POSIX</code> thread cancellation</a></span></dt></dl></dd></dl></dd><dt><span class="section"><a href="debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.compiler">Using <span class="command"><strong>g++</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="section"><a href="debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dd><dl><dt><span class="section"><a href="debug.html#debug.memory.mtalloc">Non-memory leaks in Pool and MT allocators</a></span></dt></dl></dd><dt><span class="section"><a href="debug.html#debug.races">Data Race Hunting</a></span></dt><dt><span class="section"><a href="debug.html#debug.gdb">Using <span class="command"><strong>gdb</strong></span></a></span></dt><dt><span class="section"><a href="debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="section"><a href="debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="section"><a href="debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt></dl></dd></dl></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.using.flags"></a>Command Options</h2></div></div></div><p>
       The set of features available in the GNU C++ library is shaped by
       several <a class="link" href="http://gcc.gnu.org/onlinedocs/gcc-4.3.2/gcc/Invoking-GCC.html" target="_top">GCC
       Command Options</a>. Options that impact libstdc++ are
diff --git a/libstdc++-v3/doc/html/manual/using_exceptions.html b/libstdc++-v3/doc/html/manual/using_exceptions.html
index 3ae0bea..88bc05d 100644
--- a/libstdc++-v3/doc/html/manual/using_exceptions.html
+++ b/libstdc++-v3/doc/html/manual/using_exceptions.html
@@ -100,7 +100,62 @@ exception neutrality and exception safety.
       The constructors of <code class="classname">thread</code> that take a
       callable function argument swallow all exceptions resulting from
       executing the function argument.
-    </p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="intro.using.exception.no"></a>Doing without</h3></div></div></div><p>
+    </p></li></ul></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="intro.using.exception.alloc"></a>Memory allocation</h3></div></div></div><p>
+    When the program throws an exception the runtime will obtain storage for
+    a <code class="code">__cxa_exception</code> header and the thrown object itself.
+    Libstdc++ will try to use <code class="code">malloc</code> to obtain storage,
+    but provides an emergency buffer to be used if malloc fails,
+    as described by the <a class="link" href="https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html#imp-emergency" target="_top">Itanium
+    exception handling ABI</a>.
+  </p><p>
+    Contrary to the ABI, the libstdc++ emergency buffer is not always 64kB,
+    and does not always allocate 1kB chunks. The buffer is used as a pool for
+    variable-sized allocations, so that it doesn't waste space for smaller
+    exception objects such as <code class="code">std::bad_alloc</code>.
+    The total size of the buffer is scaled appropriately for the target.
+    Specifically it depends on <code class="code">sizeof(void*)</code>, so that a 64-bit
+    system uses a larger pool than a 32-bit system. This is done because for
+    32-bit systems the exception objects (and the exception header) require
+    less space, and core counts and thread counts are typically lower as well.
+  </p><p>
+    By default, libstdc++ will use <code class="code">malloc</code> to allocate the buffer
+    on program startup.
+    <a class="xref" href="configure.html" title="Configure">Configuring</a> libstdc++ with the
+    <code class="code">--enable-libstdcxx-static-eh-pool</code> option will make it
+    use a static buffer instead of using <code class="code">malloc</code>.
+  </p><p>
+    The buffer size is chosen automatically, but can be overridden
+    by configuring with <code class="code">--with-libstdcxx-eh-pool-obj-count=NUM</code>,
+    where <code class="code">NUM</code> is the number of simultaneous allocations that
+    should be supported. The size of the pool will be sufficient for
+    <code class="code">NUM</code> exceptions of <code class="code">6 * sizeof(void*)</code> bytes,
+    plus another <code class="code">NUM</code> exceptions captured in
+    <code class="classname">std::exception_ptr</code> and rethrown using
+    <code class="code">std::rethrow_exception</code>. The buffer size determined by the
+    obj-count value applies whether the buffer is reserved as static storage
+    or is allocated dynamically.
+    Setting obj-count to zero will disable the pool, so that no emergency
+    buffer is present.
+  </p><p>
+    For a dynamic buffer, the default size can also be changed at runtime,
+    per-process, via the <code class="literal">GLIBCXX_TUNABLES</code> environment
+    variable.
+    The <code class="literal">GLIBCXX_TUNABLES</code> environment variable should be
+    a string of colon-separated <span class="emphasis"><em>name=value</em></span> pairs. The
+    following names will be recognized, with the specified semantics:
+  </p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="code">glibcxx.eh_pool.obj_count</code></span></dt><dd>
+    The number of exception objects to provide space for in the pool.
+    The value must be a non-negative integer and has the same meaning as the
+    <code class="code">--with-libstdcxx-eh-pool-obj-count</code> option for
+    <code class="filename">configure</code>.
+  </dd><dt><span class="term"><code class="code">glibcxx.eh_pool.obj_size</code></span></dt><dd>
+    The expected size of exception objects that the pool might get used for.
+    The value must be a positive integer, and is measured in units of
+    <code class="code">sizeof(void*)</code>. The default value is <code class="literal">6</code>
+    which is large enough to store any exception type thrown by libstdc++.
+    Exceptions larger than this can still be allocated from the pool,
+    but larger exceptions will exhaust the pool more rapidly.
+  </dd></dl></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="intro.using.exception.no"></a>Doing without</h3></div></div></div><p>
     C++ is a language that strives to be as efficient as is possible
     in delivering features. As such, considerable care is used by both
     language implementer and designers to make sure unused features
@@ -265,7 +320,7 @@ is called.
   }
   catch(...)
   { this-&gt;_M_setstate(ios_base::badbit); }
-</pre></div></div><div class="bibliography"><div class="titlepage"><div><div><h3 class="title"><a id="using.exceptions.biblio"></a>Bibliography</h3></div></div></div><div class="biblioentry"><a id="id-1.3.3.4.9.9.2"></a><p><span class="title"><em>
+</pre></div></div><div class="bibliography"><div class="titlepage"><div><div><h3 class="title"><a id="using.exceptions.biblio"></a>Bibliography</h3></div></div></div><div class="biblioentry"><a id="id-1.3.3.4.9.10.2"></a><p><span class="title"><em>
 	<a class="link" href="http://www.opengroup.org/austin/" target="_top">
 	System Interface Definitions, Issue 7 (IEEE Std. 1003.1-2008)
 	</a>
@@ -274,40 +329,44 @@ is called.
     . </span><span class="copyright">Copyright © 2008 
 	The Open Group/The Institute of Electrical and Electronics
 	Engineers, Inc.
-      . </span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.9.3"></a><p><span class="title"><em>
+      . </span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.10.3"></a><p><span class="title"><em>
 	<a class="link" href="https://www.boost.org/community/error_handling.html" target="_top">
 	Error and Exception Handling
 	</a>
       </em>. </span><span class="author"><span class="firstname">David</span> <span class="surname">Abrahams </span>. </span><span class="publisher"><span class="publishername">
 	Boost
-      . </span></span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.9.4"></a><p><span class="title"><em>
+      . </span></span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.10.4"></a><p><span class="title"><em>
 	<a class="link" href="https://www.boost.org/community/exception_safety.html" target="_top">
 	Exception-Safety in Generic Components
 	</a>
       </em>. </span><span class="author"><span class="firstname">David</span> <span class="surname">Abrahams</span>. </span><span class="publisher"><span class="publishername">
 	Boost
-      . </span></span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.9.5"></a><p><span class="title"><em>
+      . </span></span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.10.5"></a><p><span class="title"><em>
 	<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/1997/N1077.pdf" target="_top">
 	Standard Library Exception Policy
 	</a>
       </em>. </span><span class="author"><span class="firstname">Matt</span> <span class="surname">Austern</span>. </span><span class="publisher"><span class="publishername">
 	WG21 N1077
-      . </span></span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.9.6"></a><p><span class="title"><em>
+      . </span></span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.10.6"></a><p><span class="title"><em>
 	<a class="link" href="http://gcc.gnu.org/ml/gcc-patches/2001-03/msg00661.html" target="_top">
 	ia64 c++ abi exception handling
 	</a>
       </em>. </span><span class="author"><span class="firstname">Richard</span> <span class="surname">Henderson</span>. </span><span class="publisher"><span class="publishername">
 	GNU
-      . </span></span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.9.7"></a><p><span class="title"><em>
+      . </span></span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.10.7"></a><p><span class="title"><em>
 	<a class="link" href="https://www.stroustrup.com/3rd_safe.pdf" target="_top">
 	Appendix E: Standard-Library Exception Safety
 	</a>
-      </em>. </span><span class="author"><span class="firstname">Bjarne</span> <span class="surname">Stroustrup</span>. </span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.9.8"></a><p><span class="citetitle"><em class="citetitle">
+      </em>. </span><span class="author"><span class="firstname">Bjarne</span> <span class="surname">Stroustrup</span>. </span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.10.8"></a><p><span class="citetitle"><em class="citetitle">
       Exceptional C++
     </em>. </span><span class="pagenums">
       Exception-Safety Issues and Techniques
-    . </span><span class="author"><span class="firstname">Herb</span> <span class="surname">Sutter</span>. </span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.9.9"></a><p><span class="title"><em>
+    . </span><span class="author"><span class="firstname">Herb</span> <span class="surname">Sutter</span>. </span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.10.9"></a><p><span class="title"><em>
 	<a class="link" href="http://gcc.gnu.org/PR25191" target="_top">
       GCC Bug 25191: exception_defines.h #defines try/catch
 	</a>
+      </em>. </span></p></div><div class="biblioentry"><a id="id-1.3.3.4.9.10.10"></a><p><span class="title"><em>
+	<a class="link" href="https://www.gnu.org/software/libc/manual/html_node/Tunables.html" target="_top">
+      Tunables, The GNU C Library
+	</a>
       </em>. </span></p></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="using_concurrency.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="using.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="debug.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Concurrency </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Debugging Support</td></tr></table></div></body></html>
\ No newline at end of file
diff --git a/libstdc++-v3/doc/xml/manual/configure.xml b/libstdc++-v3/doc/xml/manual/configure.xml
index 8c26acc..c6c5981 100644
--- a/libstdc++-v3/doc/xml/manual/configure.xml
+++ b/libstdc++-v3/doc/xml/manual/configure.xml
@@ -366,6 +366,11 @@
      </para>
  </listitem></varlistentry>
 
+ <varlistentry><term><code>--disable-libstdcxx-hosted</code></term>
+ <listitem>
+   <para>This is an alias for <code>--disable-hosted-libstdcxx</code>.</para>
+ </listitem></varlistentry>
+
 <varlistentry><term><code>--disable-libstdcxx-verbose</code></term>
  <listitem>
    <para>
@@ -446,6 +451,24 @@
     </para>
  </listitem></varlistentry>
 
+ <varlistentry><term><code>--enable-libstdcxx-static-eh-pool</code></term>
+ <listitem>
+    <para>Use a fixed-size static buffer for the emergency exception handling
+      pool (see <xref linkend="intro.using.exception.alloc"/>). The default
+      is to allocate the pool on program startup using <code>malloc</code>.
+      With this option, a static buffer will be provided by libstdc++ instead.
+      This does not change the library ABI.
+    </para>
+ </listitem></varlistentry>
+
+ <varlistentry><term><code>--with-libstdcxx-eh-pool-obj-count=NUM</code></term>
+ <listitem>
+    <para>Set the size of the emergency exception handling pool. NUM is the
+      number of simultaneous allocated exceptions to support.
+      This does not change the library ABI.
+    </para>
+ </listitem></varlistentry>
+
 </variablelist>
 
 </section>
diff --git a/libstdc++-v3/doc/xml/manual/evolution.xml b/libstdc++-v3/doc/xml/manual/evolution.xml
index 8293618..a29e4df 100644
--- a/libstdc++-v3/doc/xml/manual/evolution.xml
+++ b/libstdc++-v3/doc/xml/manual/evolution.xml
@@ -1080,4 +1080,13 @@ and later.
 
 </section>
 
+<section xml:id="api.rel_131"><info><title><constant>13</constant></title></info>
+
+<para>
+Tunables <variable>glibcxx.eh_pool.obj_count</variable> and
+<variable>glibcxx.eh_pool.obj_size</variable> were added.
+</para>
+
+</section>
+
 </section>
diff --git a/libstdc++-v3/doc/xml/manual/using_exceptions.xml b/libstdc++-v3/doc/xml/manual/using_exceptions.xml
index 32bff85..47dedc1 100644
--- a/libstdc++-v3/doc/xml/manual/using_exceptions.xml
+++ b/libstdc++-v3/doc/xml/manual/using_exceptions.xml
@@ -188,6 +188,87 @@ exception neutrality and exception safety.
 
 </section>
 
+<section xml:id="intro.using.exception.alloc" xreflabel="Memory allocation for exceptions"><info><title>Memory allocation</title></info>
+
+  <para>
+    When the program throws an exception the runtime will obtain storage for
+    a <code>__cxa_exception</code> header and the thrown object itself.
+    Libstdc++ will try to use <code>malloc</code> to obtain storage,
+    but provides an emergency buffer to be used if malloc fails,
+    as described by the <link xmlns:xlink="http://www.w3.org/1999/xlink"
+    xlink:href="https://itanium-cxx-abi.github.io/cxx-abi/abi-eh.html#imp-emergency">Itanium
+    exception handling ABI</link>.
+  </para>
+
+  <para>
+    Contrary to the ABI, the libstdc++ emergency buffer is not always 64kB,
+    and does not always allocate 1kB chunks. The buffer is used as a pool for
+    variable-sized allocations, so that it doesn't waste space for smaller
+    exception objects such as <code>std::bad_alloc</code>.
+    The total size of the buffer is scaled appropriately for the target.
+    Specifically it depends on <code>sizeof(void*)</code>, so that a 64-bit
+    system uses a larger pool than a 32-bit system. This is done because for
+    32-bit systems the exception objects (and the exception header) require
+    less space, and core counts and thread counts are typically lower as well.
+  </para>
+
+  <para>
+    By default, libstdc++ will use <code>malloc</code> to allocate the buffer
+    on program startup.
+    <xref linkend="manual.intro.setup.configure"/> libstdc++ with the
+    <code>--enable-libstdcxx-static-eh-pool</code> option will make it
+    use a static buffer instead of using <code>malloc</code>.
+  </para>
+
+  <para>
+    The buffer size is chosen automatically, but can be overridden
+    by configuring with <code>--with-libstdcxx-eh-pool-obj-count=NUM</code>,
+    where <code>NUM</code> is the number of simultaneous allocations that
+    should be supported. The size of the pool will be sufficient for
+    <code>NUM</code> exceptions of <code>6 * sizeof(void*)</code> bytes,
+    plus another <code>NUM</code> exceptions captured in
+    <classname>std::exception_ptr</classname> and rethrown using
+    <code>std::rethrow_exception</code>. The buffer size determined by the
+    obj-count value applies whether the buffer is reserved as static storage
+    or is allocated dynamically.
+    Setting obj-count to zero will disable the pool, so that no emergency
+    buffer is present.
+  </para>
+
+  <para>
+    For a dynamic buffer, the default size can also be changed at runtime,
+    per-process, via the <literal>GLIBCXX_TUNABLES</literal> environment
+    variable.
+    The <literal>GLIBCXX_TUNABLES</literal> environment variable should be
+    a string of colon-separated <emphasis>name=value</emphasis> pairs. The
+    following names will be recognized, with the specified semantics:
+  </para>
+
+  <variablelist>
+  <varlistentry>
+  <term><code>glibcxx.eh_pool.obj_count</code></term>
+  <listitem>
+    The number of exception objects to provide space for in the pool.
+    The value must be a non-negative integer and has the same meaning as the
+    <code>--with-libstdcxx-eh-pool-obj-count</code> option for
+    <filename>configure</filename>.
+  </listitem>
+  </varlistentry>
+  <varlistentry>
+  <term><code>glibcxx.eh_pool.obj_size</code></term>
+  <listitem>
+    The expected size of exception objects that the pool might get used for.
+    The value must be a positive integer, and is measured in units of
+    <code>sizeof(void*)</code>. The default value is <literal>6</literal>
+    which is large enough to store any exception type thrown by libstdc++.
+    Exceptions larger than this can still be allocated from the pool,
+    but larger exceptions will exhaust the pool more rapidly.
+  </listitem>
+  </varlistentry>
+  </variablelist>
+
+</section>
+
 <section xml:id="intro.using.exception.no" xreflabel="-fno-exceptions"><info><title>Doing without</title></info>
 
   <para>
@@ -538,6 +619,15 @@ is called.
       </title>
   </biblioentry>
 
+  <biblioentry>
+      <title>
+	<link xmlns:xlink="http://www.w3.org/1999/xlink"
+	      xlink:href="https://www.gnu.org/software/libc/manual/html_node/Tunables.html">
+      Tunables, The GNU C Library
+	</link>
+      </title>
+  </biblioentry>
+
 </bibliography>
 
 </section>
diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
index 9d60755..0a3a1e3 100644
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -199,6 +199,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/libsupc++/Makefile.am b/libstdc++-v3/libsupc++/Makefile.am
index 65b5c1a..cde9fbd 100644
--- a/libstdc++-v3/libsupc++/Makefile.am
+++ b/libstdc++-v3/libsupc++/Makefile.am
@@ -139,7 +139,7 @@ atomicity.cc: ${atomicity_file}
 # as the occasion call for it.
 AM_CXXFLAGS = \
 	$(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \
-	$(XTEMPLATE_FLAGS) $(FREESTANDING_FLAGS) \
+	$(XTEMPLATE_FLAGS) $(FREESTANDING_FLAGS) $(EH_POOL_FLAGS) \
 	$(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS)  $(CONFIG_CXXFLAGS)
 
 AM_MAKEFLAGS = \
diff --git a/libstdc++-v3/libsupc++/Makefile.in b/libstdc++-v3/libsupc++/Makefile.in
index a440200..1127095 100644
--- a/libstdc++-v3/libsupc++/Makefile.in
+++ b/libstdc++-v3/libsupc++/Makefile.in
@@ -308,6 +308,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
@@ -587,7 +588,7 @@ atomicity_file = ${glibcxx_srcdir}/$(ATOMICITY_SRCDIR)/atomicity.h
 # as the occasion call for it.
 AM_CXXFLAGS = \
 	$(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \
-	$(XTEMPLATE_FLAGS) $(FREESTANDING_FLAGS) \
+	$(XTEMPLATE_FLAGS) $(FREESTANDING_FLAGS) $(EH_POOL_FLAGS) \
 	$(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS)  $(CONFIG_CXXFLAGS)
 
 AM_MAKEFLAGS = \
diff --git a/libstdc++-v3/libsupc++/eh_alloc.cc b/libstdc++-v3/libsupc++/eh_alloc.cc
index 68f3198..50dc37c 100644
--- a/libstdc++-v3/libsupc++/eh_alloc.cc
+++ b/libstdc++-v3/libsupc++/eh_alloc.cc
@@ -25,16 +25,45 @@
 // This is derived from the C++ ABI for IA-64.  Where we diverge
 // for cross-architecture compatibility are noted with "@@@".
 
-#include <bits/c++config.h>
-#include <cstdlib>
+#include <exception>           // std::exception
+#include <new>                 // std::terminate
+#include <cstdlib>             // std::malloc, std::free, std::strtoul
+#include <climits>             // INT_MAX
+#include <bits/stl_function.h> // std::less
+#include "unwind-cxx.h"
 #if _GLIBCXX_HOSTED
-#include <cstring>
+# include <string_view>        // std::string_view
+# include <cstring>            // std::strchr, std::memset
+# include <ext/concurrence.h>  // __gnu_cxx::__mutex, __gnu_cxx::__scoped_lock
 #endif
-#include <climits>
-#include <exception>
-#include "unwind-cxx.h"
-#include <ext/concurrence.h>
-#include <new>
+
+// We use an emergency buffer used for exceptions when malloc fails.
+// If _GLIBCXX_EH_POOL_STATIC is defined (e.g. by configure) then we use
+// a fixed-size static buffer. Otherwise, allocate on startup using malloc.
+//
+// The size of the buffer is N * (S * P + R + D), where:
+// N == The number of objects to reserve space for.
+//      Defaults to EMERGENCY_OBJ_COUNT, defined below.
+// S == Estimated size of exception objects to account for.
+//      This size is in units of sizeof(void*) not bytes.
+//      Defaults to EMERGENCY_OBJ_SIZE, defined below.
+// P == sizeof(void*).
+// R == sizeof(__cxa_refcounted_exception).
+// D == sizeof(__cxa_dependent_exception).
+//
+// This provides space for N thrown exceptions of S words each, and an
+// additional N dependent exceptions from std::rethrow_exception.
+//
+// The calculation allows values of N and S to be target-independent,
+// as the size will be scaled by the size of basic types on the target,
+// and space for the C++ exception header (__cxa_refcounted_exception)
+// is added automatically.
+//
+// For a dynamically allocated buffer, N and S can be set from the environment.
+// Setting N=0 will disable the emergency buffer.
+// The GLIBCXX_TUNABLES environment variable will be checked for the following:
+// - Tunable glibcxx.eh_pool.obj_count overrides EMERGENCY_OBJ_COUNT.
+// - Tunable glibcxx.eh_pool.obj_size overrides EMERGENCY_OBJ_SIZE.
 
 #if _GLIBCXX_HOSTED
 using std::free;
@@ -50,46 +79,61 @@ extern "C" void *memset (void *, int, std::size_t);
 
 using namespace __cxxabiv1;
 
-// ??? How to control these parameters.
-
-// Guess from the size of basic types how large a buffer is reasonable.
-// Note that the basic c++ exception header has 13 pointers and 2 ints,
-// so on a system with PSImode pointers we're talking about 56 bytes
-// just for overhead.
-
-#if INT_MAX == 32767
-# define EMERGENCY_OBJ_SIZE	128
-# define EMERGENCY_OBJ_COUNT	16
-#elif !defined (_GLIBCXX_LLP64) && LONG_MAX == 2147483647
-# define EMERGENCY_OBJ_SIZE	512
-# define EMERGENCY_OBJ_COUNT	32
+// Assume that 6 * sizeof(void*) is a reasonable exception object size.
+// Throwing very many large objects will exhaust the pool more quickly.
+// N.B. sizeof(std::bad_alloc) == sizeof(void*)
+// and sizeof(std::runtime_error) == 2 * sizeof(void*)
+// and sizeof(std::system_error) == 4 * sizeof(void*).
+#define EMERGENCY_OBJ_SIZE	6
+
+#ifdef __GTHREADS
+// Assume that the number of concurrent exception objects scales with the
+// processor word size, i.e., 16-bit systems are not likely to have hundreds
+// of threads all simultaneously throwing on OOM conditions.
+# define EMERGENCY_OBJ_COUNT	(4 * __SIZEOF_POINTER__ * __SIZEOF_POINTER__)
+# define MAX_OBJ_COUNT          (16 << __SIZEOF_POINTER__)
 #else
-# define EMERGENCY_OBJ_SIZE	1024
-# define EMERGENCY_OBJ_COUNT	64
+# define EMERGENCY_OBJ_COUNT	4
+# define MAX_OBJ_COUNT          64
 #endif
 
-#ifndef __GTHREADS
-# undef EMERGENCY_OBJ_COUNT
-# define EMERGENCY_OBJ_COUNT	4
+// This can be set by configure.
+#ifdef _GLIBCXX_EH_POOL_NOBJS
+# if _GLIBCXX_EH_POOL_NOBJS > MAX_OBJ_COUNT
+#  warning "_GLIBCXX_EH_POOL_NOBJS value is too large; ignoring it"
+# else
+#  undef EMERGENCY_OBJ_COUNT
+#  define EMERGENCY_OBJ_COUNT _GLIBCXX_EH_POOL_NOBJS
+# endif
 #endif
 
 namespace __gnu_cxx
 {
-  void __freeres();
+  void __freeres() noexcept;
 }
 
 namespace
 {
+  static constexpr std::size_t
+  buffer_size_in_bytes(std::size_t obj_count, std::size_t obj_size) noexcept
+  {
+    // N * (S * P + R + D)
+    constexpr std::size_t P = sizeof(void*);
+    constexpr std::size_t R = sizeof(__cxa_refcounted_exception);
+    constexpr std::size_t D = sizeof(__cxa_dependent_exception);
+    return obj_count * (obj_size * P + R + D);
+  }
+
   // A fixed-size heap, variable size object allocator
   class pool
     {
     public:
-      pool();
+      pool() noexcept;
 
-      _GLIBCXX_NODISCARD void *allocate (std::size_t);
-      void free (void *);
+      _GLIBCXX_NODISCARD void *allocate (std::size_t) noexcept;
+      void free (void *) noexcept;
 
-      bool in_pool (void *);
+      bool in_pool (void *) const noexcept;
 
     private:
       struct free_entry {
@@ -101,33 +145,87 @@ namespace
 	char data[] __attribute__((aligned));
       };
 
+#ifdef __GTHREADS
       // A single mutex controlling emergency allocations.
       __gnu_cxx::__mutex emergency_mutex;
+      using __scoped_lock = __gnu_cxx::__scoped_lock;
+#else
+      int emergency_mutex = 0;
+      struct __scoped_lock { explicit __scoped_lock(int) { } };
+#endif
 
       // The free-list
-      free_entry *first_free_entry;
+      free_entry *first_free_entry = nullptr;
       // The arena itself - we need to keep track of these only
       // to implement in_pool.
-      char *arena;
-      std::size_t arena_size;
+#ifdef _GLIBCXX_EH_POOL_STATIC
+      static constexpr std::size_t arena_size
+	= buffer_size_in_bytes(EMERGENCY_OBJ_COUNT, EMERGENCY_OBJ_SIZE);
+      alignas(void*) char arena[std::max(arena_size, sizeof(free_entry))];
+#else
+      char *arena = nullptr;
+      std::size_t arena_size = 0;
+#endif
 
-      friend void __gnu_cxx::__freeres();
+      friend void __gnu_cxx::__freeres() noexcept;
     };
 
-  pool::pool()
+  pool::pool() noexcept
     {
-      // Allocate the arena - we could add a GLIBCXX_EH_ARENA_SIZE environment
-      // to make this tunable.
-      arena_size = (EMERGENCY_OBJ_SIZE * EMERGENCY_OBJ_COUNT
-		    + EMERGENCY_OBJ_COUNT * sizeof (__cxa_dependent_exception));
+#ifndef _GLIBCXX_EH_POOL_STATIC
+      int obj_size = EMERGENCY_OBJ_SIZE;
+      int obj_count = EMERGENCY_OBJ_COUNT;
+
+#if _GLIBCXX_HOSTED
+#if _GLIBCXX_HAVE_SECURE_GETENV
+      const char* str = ::secure_getenv("GLIBCXX_TUNABLES");
+#else
+      const char* str = std::getenv("GLIBCXX_TUNABLES");
+#endif
+      const std::string_view ns_name = "glibcxx.eh_pool";
+      std::pair<std::string_view, int> tunables[]{
+	{"obj_size", 0}, {"obj_count", obj_count}
+      };
+      while (str)
+	{
+	  if (*str == ':')
+	    ++str;
+
+	  if (!ns_name.compare(0, ns_name.size(), str, ns_name.size())
+		&& str[ns_name.size()] == '.')
+	  {
+	    str += ns_name.size() + 1;
+	    for (auto& t : tunables)
+	      if (!t.first.compare(0, t.first.size(), str, t.first.size())
+		  && str[t.first.size()] == '=')
+	      {
+		str += t.first.size() + 1;
+		char* end;
+		unsigned long val = strtoul(str, &end, 0);
+		if ((*end == ':' || *end == '\0') && val <= INT_MAX)
+		  t.second = val;
+		str = end;
+		break;
+	      }
+	  }
+	  str = strchr(str, ':');
+	}
+      obj_count = std::min(tunables[1].second, MAX_OBJ_COUNT); // Can be zero.
+      if (tunables[0].second != 0)
+	obj_size = tunables[0].second;
+#endif // HOSTED
+
+      arena_size = buffer_size_in_bytes(obj_count, obj_size);
+      if (arena_size == 0)
+	return;
       arena = (char *)malloc (arena_size);
       if (!arena)
 	{
 	  // If the allocation failed go without an emergency pool.
 	  arena_size = 0;
-	  first_free_entry = NULL;
 	  return;
 	}
+#endif // STATIC
 
       // Populate the free-list with a single entry covering the whole arena
       first_free_entry = reinterpret_cast <free_entry *> (arena);
@@ -136,7 +234,7 @@ namespace
       first_free_entry->next = NULL;
     }
 
-  void *pool::allocate (std::size_t size)
+  void *pool::allocate (std::size_t size) noexcept
     {
       __gnu_cxx::__scoped_lock sentry(emergency_mutex);
       // We need an additional size_t member plus the padding to
@@ -188,9 +286,9 @@ namespace
       return &x->data;
     }
 
-  void pool::free (void *data)
+  void pool::free (void *data) noexcept
     {
-      __gnu_cxx::__scoped_lock sentry(emergency_mutex);
+      __scoped_lock sentry(emergency_mutex);
       allocated_entry *e = reinterpret_cast <allocated_entry *>
 	(reinterpret_cast <char *> (data) - offsetof (allocated_entry, data));
       std::size_t sz = e->size;
@@ -252,11 +350,10 @@ namespace
 	}
     }
 
-  bool pool::in_pool (void *ptr)
+  inline bool pool::in_pool (void *ptr) const noexcept
     {
-      char *p = reinterpret_cast <char *> (ptr);
-      return (p > arena
-	      && p < arena + arena_size);
+      std::less<const void*> less;
+      return less(ptr, arena + arena_size) && less(arena, ptr);
     }
 
   pool emergency_pool;
@@ -264,24 +361,26 @@ namespace
 
 namespace __gnu_cxx
 {
+  __attribute__((cold))
   void
-  __freeres()
+  __freeres() noexcept
   {
+#ifndef _GLIBCXX_EH_POOL_STATIC
     if (emergency_pool.arena)
       {
 	::free(emergency_pool.arena);
 	emergency_pool.arena = 0;
       }
+#endif
   }
 }
 
 extern "C" void *
-__cxxabiv1::__cxa_allocate_exception(std::size_t thrown_size) _GLIBCXX_NOTHROW
+__cxxabiv1::__cxa_allocate_exception(std::size_t thrown_size) noexcept
 {
-  void *ret;
-
   thrown_size += sizeof (__cxa_refcounted_exception);
-  ret = malloc (thrown_size);
+
+  void *ret = malloc (thrown_size);
 
   if (!ret)
     ret = emergency_pool.allocate (thrown_size);
@@ -296,10 +395,10 @@ __cxxabiv1::__cxa_allocate_exception(std::size_t thrown_size) _GLIBCXX_NOTHROW
 
 
 extern "C" void
-__cxxabiv1::__cxa_free_exception(void *vptr) _GLIBCXX_NOTHROW
+__cxxabiv1::__cxa_free_exception(void *vptr) noexcept
 {
   char *ptr = (char *) vptr - sizeof (__cxa_refcounted_exception);
-  if (emergency_pool.in_pool (ptr))
+  if (emergency_pool.in_pool (ptr)) [[__unlikely__]]
     emergency_pool.free (ptr);
   else
     free (ptr);
@@ -307,31 +406,27 @@ __cxxabiv1::__cxa_free_exception(void *vptr) _GLIBCXX_NOTHROW
 
 
 extern "C" __cxa_dependent_exception*
-__cxxabiv1::__cxa_allocate_dependent_exception() _GLIBCXX_NOTHROW
+__cxxabiv1::__cxa_allocate_dependent_exception() noexcept
 {
-  __cxa_dependent_exception *ret;
-
-  ret = static_cast<__cxa_dependent_exception*>
-    (malloc (sizeof (__cxa_dependent_exception)));
+  void *ret = malloc (sizeof (__cxa_dependent_exception));
 
   if (!ret)
-    ret = static_cast <__cxa_dependent_exception*>
-      (emergency_pool.allocate (sizeof (__cxa_dependent_exception)));
+    ret = emergency_pool.allocate (sizeof (__cxa_dependent_exception));
 
   if (!ret)
     std::terminate ();
 
   memset (ret, 0, sizeof (__cxa_dependent_exception));
 
-  return ret;
+  return static_cast<__cxa_dependent_exception*>(ret);
 }
 
 
 extern "C" void
 __cxxabiv1::__cxa_free_dependent_exception
-  (__cxa_dependent_exception *vptr) _GLIBCXX_NOTHROW
+  (__cxa_dependent_exception *vptr) noexcept
 {
-  if (emergency_pool.in_pool (vptr))
+  if (emergency_pool.in_pool (vptr)) [[__unlikely__]]
     emergency_pool.free (vptr);
   else
     free (vptr);
diff --git a/libstdc++-v3/po/Makefile.in b/libstdc++-v3/po/Makefile.in
index 243f3db..af3d4c4 100644
--- a/libstdc++-v3/po/Makefile.in
+++ b/libstdc++-v3/po/Makefile.in
@@ -199,6 +199,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/python/Makefile.in b/libstdc++-v3/python/Makefile.in
index 9da4b31..0c600de 100644
--- a/libstdc++-v3/python/Makefile.in
+++ b/libstdc++-v3/python/Makefile.in
@@ -229,6 +229,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in
index cef290c..c54c0f6 100644
--- a/libstdc++-v3/src/Makefile.in
+++ b/libstdc++-v3/src/Makefile.in
@@ -301,6 +301,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/src/c++11/Makefile.in b/libstdc++-v3/src/c++11/Makefile.in
index 4db28bd..013ab3c 100644
--- a/libstdc++-v3/src/c++11/Makefile.in
+++ b/libstdc++-v3/src/c++11/Makefile.in
@@ -266,6 +266,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/src/c++17/Makefile.in b/libstdc++-v3/src/c++17/Makefile.in
index b88917e..217cbbe 100644
--- a/libstdc++-v3/src/c++17/Makefile.in
+++ b/libstdc++-v3/src/c++17/Makefile.in
@@ -245,6 +245,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/src/c++20/Makefile.in b/libstdc++-v3/src/c++20/Makefile.in
index 197d75b..c04bb7d 100644
--- a/libstdc++-v3/src/c++20/Makefile.in
+++ b/libstdc++-v3/src/c++20/Makefile.in
@@ -240,6 +240,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/src/c++98/Makefile.in b/libstdc++-v3/src/c++98/Makefile.in
index 90eff5d..77ec8c7 100644
--- a/libstdc++-v3/src/c++98/Makefile.in
+++ b/libstdc++-v3/src/c++98/Makefile.in
@@ -261,6 +261,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/src/filesystem/Makefile.in b/libstdc++-v3/src/filesystem/Makefile.in
index 8986b42..010bcfc 100644
--- a/libstdc++-v3/src/filesystem/Makefile.in
+++ b/libstdc++-v3/src/filesystem/Makefile.in
@@ -269,6 +269,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/src/libbacktrace/Makefile.in b/libstdc++-v3/src/libbacktrace/Makefile.in
index 5c6b4dd..a52f645 100644
--- a/libstdc++-v3/src/libbacktrace/Makefile.in
+++ b/libstdc++-v3/src/libbacktrace/Makefile.in
@@ -302,6 +302,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
diff --git a/libstdc++-v3/testsuite/Makefile.in b/libstdc++-v3/testsuite/Makefile.in
index 1708060..328a036 100644
--- a/libstdc++-v3/testsuite/Makefile.in
+++ b/libstdc++-v3/testsuite/Makefile.in
@@ -199,6 +199,7 @@ ECHO_C = @ECHO_C@
 ECHO_N = @ECHO_N@
 ECHO_T = @ECHO_T@
 EGREP = @EGREP@
+EH_POOL_FLAGS = @EH_POOL_FLAGS@
 ERROR_CONSTANTS_SRCDIR = @ERROR_CONSTANTS_SRCDIR@
 EXEEXT = @EXEEXT@
 EXTRA_CFLAGS = @EXTRA_CFLAGS@
-- 
cgit v1.1


From 23c3cbaed36f6d2f3a7a64f6ebda69329723514b Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Tue, 11 Oct 2022 20:19:08 +0100
Subject: libstdc++: Fix bootstrap for --disable-threads build [PR107221]

The __scoped_lock type should be used unqualified so that we always
refer to pool::__scoped_lock, which might be the dummy fallback
implementation.

The __mutex and __scoped_lock types in <ext/concurrence.h> already work
fine without __GTHREADS being defined, but that header isn't included at
all unless _GLIBCXX_HOSTED != 0. The fallback implementation should be
used for ! _GLIBCXX_HOSTED instead of for !defined __GTHREADS.

libstdc++-v3/ChangeLog:

	PR bootstrap/107221
	* libsupc++/eh_alloc.cc (pool): Change preprocessor condition
	for using __mutex from __GTHREADS to _GLIBCXX_HOSTED.
	(pool::allocate): Remove namespace qualification to use
	pool::__scoped_lock instead of __gnu_cxx::__scoped_lock.
---
 libstdc++-v3/libsupc++/eh_alloc.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/libsupc++/eh_alloc.cc b/libstdc++-v3/libsupc++/eh_alloc.cc
index 50dc37c..81b8a15 100644
--- a/libstdc++-v3/libsupc++/eh_alloc.cc
+++ b/libstdc++-v3/libsupc++/eh_alloc.cc
@@ -145,7 +145,7 @@ namespace
 	char data[] __attribute__((aligned));
       };
 
-#ifdef __GTHREADS
+#if _GLIBCXX_HOSTED
       // A single mutex controlling emergency allocations.
       __gnu_cxx::__mutex emergency_mutex;
       using __scoped_lock = __gnu_cxx::__scoped_lock;
@@ -236,7 +236,7 @@ namespace
 
   void *pool::allocate (std::size_t size) noexcept
     {
-      __gnu_cxx::__scoped_lock sentry(emergency_mutex);
+      __scoped_lock sentry(emergency_mutex);
       // We need an additional size_t member plus the padding to
       // ensure proper alignment of data.
       size += offsetof (allocated_entry, data);
-- 
cgit v1.1


From ab332cd78d083edb2fddaa3c02578cafade12725 Mon Sep 17 00:00:00 2001
From: GCC Administrator <gccadmin@gcc.gnu.org>
Date: Wed, 12 Oct 2022 00:17:24 +0000
Subject: Daily bump.

---
 libstdc++-v3/ChangeLog | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 58b011b..def58a6 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,57 @@
+2022-10-11  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR bootstrap/107221
+	* libsupc++/eh_alloc.cc (pool): Change preprocessor condition
+	for using __mutex from __GTHREADS to _GLIBCXX_HOSTED.
+	(pool::allocate): Remove namespace qualification to use
+	pool::__scoped_lock instead of __gnu_cxx::__scoped_lock.
+
+2022-10-11  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/68606
+	* Makefile.in: Regenerate.
+	* acinclude.m4 (GLIBCXX_EMERGENCY_EH_ALLOC): New macro.
+	* configure: Regenerate.
+	* configure.ac: Use GLIBCXX_EMERGENCY_EH_ALLOC.
+	* crossconfig.m4: Check for secure_getenv.
+	* doc/Makefile.in: Regenerate.
+	* doc/xml/manual/configure.xml: Document new configure options.
+	* doc/xml/manual/evolution.xml: Document addition of tunables.
+	* doc/xml/manual/using_exceptions.xml: Document emergency
+	buffer and tunables.
+	* doc/html/*: Regenerate.
+	* include/Makefile.in: Regenerate.
+	* libsupc++/Makefile.am: Use EH_POOL_FLAGS.
+	* libsupc++/Makefile.in: Regenerate.
+	* libsupc++/eh_alloc.cc (EMERGENCY_OBJ_SIZE): Define in units
+	of sizeof(void*) not including the ABI's exception header.
+	(EMERGENCY_OBJ_COUNT): Define as target-independent calculation
+	based on word size.
+	(MAX_OBJ_COUNT): Define macro for upper limit on pool size.
+	(pool) [_GLIBCXX_EH_POOL_STATIC]: Use fixed-size buffer.
+	(pool::buffer_size_in_bytes): New static member function.
+	(pool::pool): Parse GLIBCXX_TUNABLES environment variable to set
+	pool size at runtime.
+	(pool::in_pool): Use std::less<void*> for total order.
+	(__freeres) [_GLIBCXX_EH_POOL_STATIC]: Do nothing.
+	(__cxa_free_exception, __cxa_free_dependent_exception): Add
+	[[unlikely]] attributes.
+	* po/Makefile.in: Regenerate.
+	* python/Makefile.in: Regenerate.
+	* src/Makefile.in: Regenerate.
+	* src/c++11/Makefile.in: Regenerate.
+	* src/c++17/Makefile.in: Regenerate.
+	* src/c++20/Makefile.in: Regenerate.
+	* src/c++98/Makefile.in: Regenerate.
+	* src/filesystem/Makefile.in: Regenerate.
+	* src/libbacktrace/Makefile.in: Regenerate.
+	* testsuite/Makefile.in: Regenerate.
+
+2022-10-11  Olivier Hainque  <hainque@adacore.com>
+	    Olivier Hainque  <hainque@adacore.com>
+
+	* configure: Regenerate.
+
 2022-10-10  Jonathan Wakely  <jwakely@redhat.com>
 
 	* include/std/type_traits (make_signed, make_unsigned): Remove
-- 
cgit v1.1


From 6d2294a83e1417720e1f8ddf5aa4dc1a35ef89d5 Mon Sep 17 00:00:00 2001
From: Martin Liska <mliska@suse.cz>
Date: Wed, 12 Oct 2022 09:31:32 +0200
Subject: regenerate configure files

Needed after a recent change.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

liboffloadmic/ChangeLog:

	* configure: Regenerate.
	* plugin/configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.
---
 libstdc++-v3/configure | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index b564175..6077e69 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -12236,7 +12236,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12215 "configure"
+#line 12239 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12342,7 +12342,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12321 "configure"
+#line 12345 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -16062,7 +16062,7 @@ $as_echo "$glibcxx_cv_atomic_long_long" >&6; }
   # Fake what AC_TRY_COMPILE does.
 
     cat > conftest.$ac_ext << EOF
-#line 16021 "configure"
+#line 16065 "configure"
 int main()
 {
   typedef bool atomic_type;
@@ -16097,7 +16097,7 @@ $as_echo "$glibcxx_cv_atomic_bool" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 16056 "configure"
+#line 16100 "configure"
 int main()
 {
   typedef short atomic_type;
@@ -16132,7 +16132,7 @@ $as_echo "$glibcxx_cv_atomic_short" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 16091 "configure"
+#line 16135 "configure"
 int main()
 {
   // NB: _Atomic_word not necessarily int.
@@ -16168,7 +16168,7 @@ $as_echo "$glibcxx_cv_atomic_int" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 16127 "configure"
+#line 16171 "configure"
 int main()
 {
   typedef long long atomic_type;
@@ -16324,7 +16324,7 @@ $as_echo "mutex" >&6; }
   # unnecessary for this test.
 
     cat > conftest.$ac_ext << EOF
-#line 16283 "configure"
+#line 16327 "configure"
 int main()
 {
   _Decimal32 d1;
@@ -16366,7 +16366,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
   # unnecessary for this test.
 
   cat > conftest.$ac_ext << EOF
-#line 16325 "configure"
+#line 16369 "configure"
 template<typename T1, typename T2>
   struct same
   { typedef T2 type; };
-- 
cgit v1.1


From bfcd9f84531fa99e9d00efd8bcfd3c8ac16fa360 Mon Sep 17 00:00:00 2001
From: Patrick Palka <ppalka@redhat.com>
Date: Wed, 12 Oct 2022 11:14:11 -0400
Subject: libstdc++: Implement ranges::repeat_view from P2474R2

libstdc++-v3/ChangeLog:

	* include/std/ranges (repeat_view): Define.
	(repeat_view::_Iterator): Define.
	(views::__detail::__can_repeat_view): Define.
	(views::__detail::__can_bounded_repeat_view): Define.
	(views::_Repeat, views::repeat): Define.
	* testsuite/std/ranges/repeat/1.cc: New test.
---
 libstdc++-v3/include/std/ranges               | 210 ++++++++++++++++++++++++++
 libstdc++-v3/testsuite/std/ranges/repeat/1.cc |  93 ++++++++++++
 2 files changed, 303 insertions(+)
 create mode 100644 libstdc++-v3/testsuite/std/ranges/repeat/1.cc

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/include/std/ranges b/libstdc++-v3/include/std/ranges
index 1f82112..5857d42 100644
--- a/libstdc++-v3/include/std/ranges
+++ b/libstdc++-v3/include/std/ranges
@@ -7356,6 +7356,216 @@ namespace views::__adaptor
 
     inline constexpr _JoinWith join_with;
   } // namespace views
+
+  template<copy_constructible _Tp, semiregular _Bound = unreachable_sentinel_t>
+    requires (is_object_v<_Tp> && same_as<_Tp, remove_cv_t<_Tp>>
+      && (__detail::__is_integer_like<_Bound> || same_as<_Bound, unreachable_sentinel_t>))
+  class repeat_view : public view_interface<repeat_view<_Tp, _Bound>>
+  {
+    __detail::__box<_Tp> _M_value = _Tp();
+    [[no_unique_address]] _Bound _M_bound = _Bound();
+
+    struct _Iterator;
+
+  public:
+    repeat_view() requires default_initializable<_Tp> = default;
+
+    constexpr explicit
+    repeat_view(const _Tp& __value, _Bound __bound = _Bound())
+    : _M_value(__value), _M_bound(__bound)
+    {
+      if constexpr (!same_as<_Bound, unreachable_sentinel_t>)
+	__glibcxx_assert(__bound >= 0);
+    }
+
+    constexpr explicit
+    repeat_view(_Tp&& __value, _Bound __bound = _Bound())
+    : _M_value(std::move(__value)), _M_bound(__bound)
+    { }
+
+    template<typename... _Args, typename... _BoundArgs>
+      requires constructible_from<_Tp, _Args...>
+        && constructible_from<_Bound, _BoundArgs...>
+    constexpr explicit
+    repeat_view(piecewise_construct_t,
+		tuple<_Args...> __args,
+		tuple<_BoundArgs...> __bound_args = tuple<>{})
+    : _M_value(std::make_from_tuple<_Tp>(std::move(__args))),
+      _M_bound(std::make_from_tuple<_Bound>(std::move(__bound_args)))
+    { }
+
+    constexpr _Iterator
+    begin() const
+    { return _Iterator(std::__addressof(*_M_value)); }
+
+    constexpr _Iterator
+    end() const requires (!same_as<_Bound, unreachable_sentinel_t>)
+    { return _Iterator(std::__addressof(*_M_value), _M_bound); }
+
+    constexpr unreachable_sentinel_t
+    end() const noexcept
+    { return unreachable_sentinel; }
+
+    constexpr auto
+    size() const requires (!same_as<_Bound, unreachable_sentinel_t>)
+    { return __detail::__to_unsigned_like(_M_bound); }
+  };
+
+  template<typename _Tp, typename _Bound>
+    repeat_view(_Tp, _Bound) -> repeat_view<_Tp, _Bound>;
+
+  template<copy_constructible _Tp, semiregular _Bound>
+    requires __detail::__is_integer_like<_Bound> || same_as<_Bound, unreachable_sentinel_t>
+  class repeat_view<_Tp, _Bound>::_Iterator
+  {
+    using __index_type
+      = __conditional_t<same_as<_Bound, unreachable_sentinel_t>, ptrdiff_t, _Bound>;
+
+    const _Tp* _M_value = nullptr;
+    __index_type _M_current = __index_type();
+
+    constexpr explicit
+    _Iterator(const _Tp* __value, __index_type __bound = __index_type())
+    : _M_value(__value), _M_current(__bound)
+    {
+      if constexpr (!same_as<_Bound, unreachable_sentinel_t>)
+	__glibcxx_assert(__bound >= 0);
+    }
+
+    friend repeat_view;
+
+  public:
+    using iterator_concept = random_access_iterator_tag;
+    using iterator_category = random_access_iterator_tag;
+    using value_type = _Tp;
+    using difference_type = __conditional_t<__detail::__is_signed_integer_like<__index_type>,
+					    __index_type,
+					    __detail::__iota_diff_t<__index_type>>;
+
+    _Iterator() = default;
+
+    constexpr const _Tp&
+    operator*() const noexcept
+    { return *_M_value; }
+
+    constexpr _Iterator&
+    operator++()
+    {
+      ++_M_current;
+      return *this;
+    }
+
+    constexpr _Iterator
+    operator++(int)
+    {
+      auto __tmp = *this;
+      ++*this;
+      return __tmp;
+    }
+
+    constexpr _Iterator&
+    operator--()
+    {
+      if constexpr (!same_as<_Bound, unreachable_sentinel_t>)
+	__glibcxx_assert(_M_current > 0);
+      --_M_current;
+      return *this;
+    }
+
+    constexpr _Iterator
+    operator--(int)
+    {
+      auto __tmp = *this;
+      --*this;
+      return __tmp;
+    }
+
+    constexpr _Iterator&
+    operator+=(difference_type __n)
+    {
+      if constexpr (!same_as<_Bound, unreachable_sentinel_t>)
+	__glibcxx_assert(_M_current + __n >= 0);
+      _M_current += __n;
+      return *this;
+    }
+
+    constexpr _Iterator&
+    operator-=(difference_type __n)
+    {
+      if constexpr (!same_as<_Bound, unreachable_sentinel_t>)
+	__glibcxx_assert(_M_current - __n >= 0);
+      _M_current -= __n;
+      return *this;
+    }
+
+    constexpr const _Tp&
+    operator[](difference_type __n) const noexcept
+    { return *(*this + __n); }
+
+    friend constexpr bool
+    operator==(const _Iterator& __x, const _Iterator& __y)
+    { return __x._M_current == __y._M_current; }
+
+    friend constexpr auto
+    operator<=>(const _Iterator& __x, const _Iterator& __y)
+    { return __x._M_current <=> __y._M_current; }
+
+    friend constexpr _Iterator
+    operator+(_Iterator __i, difference_type __n)
+    {
+      __i += __n;
+      return __i;
+    }
+
+    friend constexpr _Iterator
+    operator+(difference_type __n, _Iterator __i)
+    { return __i + __n; }
+
+    friend constexpr _Iterator
+    operator-(_Iterator __i, difference_type __n)
+    {
+      __i -= __n;
+      return __i;
+    }
+
+    friend constexpr difference_type
+    operator-(const _Iterator& __x, const _Iterator& __y)
+    {
+      return (static_cast<difference_type>(__x._M_current)
+	      - static_cast<difference_type>(__y._M_current));
+    }
+  };
+
+  namespace views
+  {
+    namespace __detail
+    {
+      template<typename _Tp>
+	concept __can_repeat_view
+	  = requires { repeat_view(std::declval<_Tp>()); };
+
+      template<typename _Tp, typename _Bound>
+	concept __can_bounded_repeat_view
+	  = requires { repeat_view(std::declval<_Tp>(), std::declval<_Bound>()); };
+    }
+
+    struct _Repeat
+    {
+      template<typename _Tp>
+	requires __detail::__can_repeat_view<_Tp>
+      constexpr auto
+      operator() [[nodiscard]] (_Tp&& __value) const
+      { return repeat_view(std::forward<_Tp>(__value)); }
+
+      template<typename _Tp, typename _Bound>
+	requires __detail::__can_bounded_repeat_view<_Tp, _Bound>
+      constexpr auto
+      operator() [[nodiscard]] (_Tp&& __value, _Bound __bound) const
+      { return repeat_view(std::forward<_Tp>(__value), __bound); }
+    };
+
+    inline constexpr _Repeat repeat;
+  }
 #endif // C++23
 } // namespace ranges
 
diff --git a/libstdc++-v3/testsuite/std/ranges/repeat/1.cc b/libstdc++-v3/testsuite/std/ranges/repeat/1.cc
new file mode 100644
index 0000000..3698ed1
--- /dev/null
+++ b/libstdc++-v3/testsuite/std/ranges/repeat/1.cc
@@ -0,0 +1,93 @@
+// { dg-options "-std=gnu++23" }
+// { dg-do run { target c++23 } }
+
+#include <ranges>
+#include <algorithm>
+#include <testsuite_hooks.h>
+
+namespace ranges = std::ranges;
+namespace views = std::views;
+
+constexpr bool
+test01()
+{
+  auto v = views::repeat(42);
+  static_assert(ranges::random_access_range<decltype(v)>
+		&& !ranges::sized_range<decltype(v)>);
+  auto i = ranges::begin(v);
+  auto s = ranges::end(v);
+  VERIFY( *i == 42 );
+  VERIFY( i[0] == 42 );
+  VERIFY( &i[0] == &i[1] );
+  VERIFY( &*i == &*(i+1) );
+  VERIFY( i != s );
+  auto j = i + 5, k = i + 12;
+  VERIFY( k - i == 12 );
+  VERIFY( k - j == 7 );
+  VERIFY( i - j == -5 );
+  VERIFY( k > j );
+  VERIFY( j < k );
+  VERIFY( i + 5 == j );
+  VERIFY( i != j );
+  VERIFY( i + 5 <= j );
+  VERIFY( j - 5 >= i );
+
+  return true;
+}
+
+constexpr bool
+test02()
+{
+  constexpr int bound = 20;
+  auto v = views::repeat(42, bound);
+  static_assert(ranges::random_access_range<decltype(v)>
+		&& ranges::sized_range<decltype(v)>);
+  VERIFY( ranges::equal(v, views::repeat(42) | views::take(bound)) );
+  auto i = ranges::begin(v);
+  auto s = ranges::end(v);
+  VERIFY( *i == 42 );
+  VERIFY( i[0] == 42 );
+  VERIFY( &i[0] == &i[1] );
+  VERIFY( &*i == &*(i+1) );
+  VERIFY( i != s );
+  auto j = i + 5, k = i + 12;
+  VERIFY( k - i == 12 );
+  VERIFY( k - j == 7 );
+  VERIFY( i - j == -5 );
+  VERIFY( k > j );
+  VERIFY( j < k );
+  VERIFY( i + 5 == j );
+  VERIFY( i != j );
+  VERIFY( i + 5 <= j );
+  VERIFY( j - 5 >= i );
+
+  VERIFY( ranges::size(v) == bound );
+  VERIFY( s - i == bound );
+  VERIFY( s - j == bound - (j - i) );
+  VERIFY( i + bound == s );
+  VERIFY( bound + i == s );
+
+  return true;
+}
+
+constexpr bool
+test03()
+{
+  struct A { int n, m; };
+  auto v = ranges::repeat_view<A, unsigned>(std::piecewise_construct,
+					    std::tuple{1, 2},
+					    std::tuple{3});
+  VERIFY( v[0].n == 1 );
+  VERIFY( v[0].m == 2 );
+  VERIFY( ranges::size(v) == 3 );
+
+  return true;
+}
+
+int
+main()
+{
+  static_assert(test01());
+  static_assert(test02());
+  static_assert(test03());
+}
-- 
cgit v1.1


From f77281b25ca6bb34ba271fa826e1e79a15df95fe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Dumont?= <fdumont@gcc.gnu.org>
Date: Wed, 10 Aug 2022 19:35:41 +0200
Subject: libstdc++: Add __gnu_debug::basic_string<>::compare overloads

Rather than adding those implementations we are adding a:
using _Base::compare;

so that any compare method not implemented at __gnu_debug::basic_string
level are injected from the base class.

Also review how __gnu_debug::basic_string is tested. Now require to define
_GLIBCXX_TEST_DEBUG_STRING when running 'make check-debug'.

libstdc++-v3/ChangeLog

	* include/debug/string: Add using _Base::compare.
	(__gnu_debug::basic_string<>::compare(const basic_string<>&)): Remove.
	(__gnu_debug::basic_string<>::compare(size_type, size_type, const basic_string<>&)):
	Remove.
	(__gnu_debug::basic_string<>::compare(size_type, size_type, const basic_string<>&,
	size_type, size_type)): Remove.
	* testsuite/util/testsuite_string.h [_GLIBCXX_TEST_DEBUG_STRING]: Include <debug/string>.
	* testsuite/21_strings/basic_string/operations/compare/char/1.cc: Include testsuite_string.h
	and use __gnu_test::string.
	* testsuite/21_strings/basic_string/operations/compare/char/13650.cc: Likewise.
	* testsuite/21_strings/basic_string/operations/compare/char/2.cc: Likewise.
	* testsuite/21_strings/basic_string/operations/rfind/char/1.cc: Likewise.
	* testsuite/21_strings/basic_string/operations/rfind/char/2.cc: Likewise.
	* testsuite/21_strings/basic_string/operations/rfind/char/3.cc: Likewise.
	* testsuite/21_strings/basic_string/operations/compare/wchar_t/1.cc:
	Include testsuite_string.h
	and use __gnu_test::wstring.
	* testsuite/21_strings/basic_string/operations/compare/wchar_t/13650.cc: Likewise.
	* testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc: Likewise.
---
 libstdc++-v3/include/debug/string                     | 19 +++++--------------
 .../basic_string/operations/compare/char/1.cc         |  4 ++--
 .../basic_string/operations/compare/char/13650.cc     |  4 ++--
 .../basic_string/operations/compare/char/2.cc         |  6 +++---
 .../basic_string/operations/compare/wchar_t/1.cc      |  4 ++--
 .../basic_string/operations/compare/wchar_t/13650.cc  |  4 ++--
 .../basic_string/operations/compare/wchar_t/2.cc      |  6 +++---
 .../basic_string/operations/rfind/char/1.cc           | 18 +++++++++---------
 .../basic_string/operations/rfind/char/2.cc           | 10 +++++-----
 .../basic_string/operations/rfind/char/3.cc           | 14 +++++++-------
 libstdc++-v3/testsuite/util/testsuite_string.h        |  2 +-
 11 files changed, 41 insertions(+), 50 deletions(-)

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/include/debug/string b/libstdc++-v3/include/debug/string
index c16751c..574a78e 100644
--- a/libstdc++-v3/include/debug/string
+++ b/libstdc++-v3/include/debug/string
@@ -1023,22 +1023,11 @@ namespace __gnu_debug
       substr(size_type __pos = 0, size_type __n = _Base::npos) const
       { return basic_string(_Base::substr(__pos, __n)); }
 
-      int
-      compare(const basic_string& __str) const
-      { return _Base::compare(__str); }
-
-      int
-      compare(size_type __pos1, size_type __n1,
-	      const basic_string& __str) const
-      { return _Base::compare(__pos1, __n1, __str); }
-
-      int
-      compare(size_type __pos1, size_type __n1, const basic_string& __str,
-	      size_type __pos2, size_type __n2) const
-      { return _Base::compare(__pos1, __n1, __str, __pos2, __n2); }
+      using _Base::compare;
 
+      _GLIBCXX20_CONSTEXPR
       int
-      compare(const _CharT* __s) const
+      compare(const _CharT* __s) const _GLIBCXX_NOEXCEPT
       {
 	__glibcxx_check_string(__s);
 	return _Base::compare(__s);
@@ -1046,6 +1035,7 @@ namespace __gnu_debug
 
       //  _GLIBCXX_RESOLVE_LIB_DEFECTS
       //  5. string::compare specification questionable
+      _GLIBCXX20_CONSTEXPR
       int
       compare(size_type __pos1, size_type __n1, const _CharT* __s) const
       {
@@ -1055,6 +1045,7 @@ namespace __gnu_debug
 
       //  _GLIBCXX_RESOLVE_LIB_DEFECTS
       //  5. string::compare specification questionable
+      _GLIBCXX20_CONSTEXPR
       int
       compare(size_type __pos1, size_type __n1,const _CharT* __s,
 	      size_type __n2) const
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/1.cc b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/1.cc
index 0bef0d2..c04b83c 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/1.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/1.cc
@@ -29,7 +29,7 @@
 // NB compare should be thought of as a lexographical compare, ie how
 // things would be sorted in a dictionary.
 
-#include <string>
+#include <testsuite_string.h>
 #include <cstring>
 #include <testsuite_hooks.h>
 
@@ -67,7 +67,7 @@ test_value(int result, want_value expected)
 int 
 test01()
 {
-  using namespace std;
+  using namespace __gnu_test;
 
   string 	str_0("costa rica");
   string 	str_1("costa marbella");
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/13650.cc b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/13650.cc
index 96fd2f1..ce95623 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/13650.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/13650.cc
@@ -19,13 +19,13 @@
 
 // 21.3.6.8 basic_string::compare [lib.string::compare]
 
-#include <string>
+#include <testsuite_string.h>
 #include <testsuite_hooks.h>
 
 // libstdc++/13650
 void test01()
 {
-  using namespace std;
+  using namespace __gnu_test;
 
   const char lit_01[] = { 'w', 'e', '\0', 'r', 'd' };
   const char lit_02[] = { 'w', 'e', 'i', '\0', 'd' };
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/2.cc b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/2.cc
index 17e8752..fca1543 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/2.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/char/2.cc
@@ -19,14 +19,14 @@
 
 // [string::compare]
 
-#include <string>
+#include <testsuite_string.h>
 #include <testsuite_hooks.h>
 
 void
 test03()
 {
   std::string_view str1("foobar");
-  std::string str2("foobar");
+  __gnu_test::string str2("foobar");
 
   auto x = str2.compare(str1);
   VERIFY (x == 0);
@@ -52,7 +52,7 @@ test03()
 void
 test04()
 {
-  const std::string str("a");
+  const __gnu_test::string str("a");
   char c = 'a';
   int res = str.compare(0, 1, &c, 1);
   VERIFY ( !res );
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/1.cc b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/1.cc
index 97a873a..aa5c168 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/1.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/1.cc
@@ -29,7 +29,7 @@
 // NB compare should be thought of as a lexographical compare, ie how
 // things would be sorted in a dictionary.
 
-#include <string>
+#include <testsuite_string.h>
 #include <testsuite_hooks.h>
 
 enum want_value {lt=0, z=1, gt=2};
@@ -67,7 +67,7 @@ test_value(int result, want_value expected)
 int 
 test01()
 {
-  using namespace std;
+  using namespace __gnu_test;
 
   wstring 	str_0(L"costa rica");
   wstring 	str_1(L"costa marbella");
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/13650.cc b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/13650.cc
index 1825c6b..f3dd4eb 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/13650.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/13650.cc
@@ -19,13 +19,13 @@
 
 // 21.3.6.8 basic_string::compare [lib.string::compare]
 
-#include <string>
+#include <testsuite_string.h>
 #include <testsuite_hooks.h>
 
 // libstdc++/13650
 void test01()
 {
-  using namespace std;
+  using namespace __gnu_test;
 
   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' };
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc
index dd703c1..c6d219a 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc
@@ -19,14 +19,14 @@
 
 // [string::compare]
 
-#include <string>
+#include <testsuite_string.h>
 #include <testsuite_hooks.h>
 
 void
 test03()
 {
   std::wstring_view str1(L"foobar");
-  std::wstring str2(L"foobar");
+  __gnu_test::wstring str2(L"foobar");
 
   auto x = str2.compare(str1);
   VERIFY (x == 0);
@@ -52,7 +52,7 @@ test03()
 void
 test04()
 {
-  const std::wstring str(L"a");
+  const __gnu_test::wstring str(L"a");
 
   wchar_t c = L'a';
   int res = str.compare(0, 1, &c, 1);
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/1.cc b/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/1.cc
index 73843b0..76fcb07 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/1.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/1.cc
@@ -17,23 +17,23 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-#include <string>
+#include <testsuite_string.h>
 #include <testsuite_hooks.h>
 
 // 21.3.6.2 basic_string rfind
 void test01(void)
 {
-  typedef std::string::size_type csize_type;
-  typedef std::string::const_reference cref;
-  typedef std::string::reference ref;
-  csize_type npos = std::string::npos;
+  typedef __gnu_test::string::size_type csize_type;
+  typedef __gnu_test::string::const_reference cref;
+  typedef __gnu_test::string::reference ref;
+  csize_type npos = __gnu_test::string::npos;
   csize_type csz01, csz02;
 
   const char str_lit01[] = "mave";
-  const std::string str01("mavericks, santa cruz");
-  std::string str02(str_lit01);
-  std::string str03("s, s");
-  std::string str04;
+  const __gnu_test::string str01("mavericks, santa cruz");
+  __gnu_test::string str02(str_lit01);
+  __gnu_test::string str03("s, s");
+  __gnu_test::string str04;
 
   // size_type rfind(const string&, size_type pos = 0) const;
   csz01 = str01.rfind(str01);
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/2.cc b/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/2.cc
index 5879655..9fecfcf 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/2.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/2.cc
@@ -17,14 +17,14 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-#include <string>
+#include <testsuite_string.h>
 #include <testsuite_hooks.h>
 
 // 21.3.6.4 basic_string::find_last_of
 void test02()
 {
-  std::string z("ab");
-  std::string::size_type pos;
+  __gnu_test::string z("ab");
+  __gnu_test::string::size_type pos;
   pos = z.find_last_of("ab");
   VERIFY( pos == 1 );
   pos = z.find_last_of("Xa");
@@ -32,13 +32,13 @@ void test02()
   pos = z.find_last_of("Xb");
   VERIFY( pos == 1 );
   pos = z.find_last_of("XYZ");
-  VERIFY( pos == std::string::npos );
+  VERIFY( pos == __gnu_test::string::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 == std::string::npos );
+  VERIFY( pos == __gnu_test::string::npos );
 }
 
 int main()
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/3.cc b/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/3.cc
index 1ff9c94..69471e6 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/3.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string/operations/rfind/char/3.cc
@@ -17,23 +17,23 @@
 // with this library; see the file COPYING3.  If not see
 // <http://www.gnu.org/licenses/>.
 
-#include <string>
+#include <testsuite_string.h>
 #include <testsuite_hooks.h>
 
 // 21.3.6.6 basic_string::find_last_not_of
 void test03()
 {
-  typedef std::string::size_type csize_type;
-  std::string::size_type pos;
-  csize_type npos = std::string::npos;
+  typedef __gnu_test::string::size_type csize_type;
+  __gnu_test::string::size_type pos;
+  csize_type npos = __gnu_test::string::npos;
 
-  std::string x;
+  __gnu_test::string x;
   pos = x.find_last_not_of('X');
   VERIFY( pos == npos );
   pos = x.find_last_not_of("XYZ");
   VERIFY( pos == npos );
 
-  std::string y("a");
+  __gnu_test::string y("a");
   pos = y.find_last_not_of('X');
   VERIFY( pos == 0 );
   pos = y.find_last_not_of('a');
@@ -43,7 +43,7 @@ void test03()
   pos = y.find_last_not_of("a");
   VERIFY( pos == npos );
 
-  std::string z("ab");
+  __gnu_test::string z("ab");
   pos = z.find_last_not_of('X');
   VERIFY( pos == 1 );
   pos = z.find_last_not_of("XYZ");
diff --git a/libstdc++-v3/testsuite/util/testsuite_string.h b/libstdc++-v3/testsuite/util/testsuite_string.h
index 7121ff8..7e61d98 100644
--- a/libstdc++-v3/testsuite/util/testsuite_string.h
+++ b/libstdc++-v3/testsuite/util/testsuite_string.h
@@ -1,7 +1,7 @@
 #ifndef _GLIBCXX_TESTSUITE_STRING_H
 #define _GLIBCXX_TESTSUITE_STRING_H
 
-#ifdef _GLIBCXX_DEBUG
+#if defined(_GLIBCXX_DEBUG) && defined(_GLIBCXX_TEST_DEBUG_STRING)
 # include <debug/string>
 namespace __gnu_test
 {
-- 
cgit v1.1


From 781f477a13ae14ca661018518f4d4a9e6881b0dd Mon Sep 17 00:00:00 2001
From: GCC Administrator <gccadmin@gcc.gnu.org>
Date: Thu, 13 Oct 2022 00:17:37 +0000
Subject: Daily bump.

---
 libstdc++-v3/ChangeLog | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

(limited to 'libstdc++-v3')

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index def58a6..a78e198 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,38 @@
+2022-10-12  François Dumont  <fdumont@gcc.gnu.org>
+
+	* include/debug/string: Add using _Base::compare.
+	(__gnu_debug::basic_string<>::compare(const basic_string<>&)): Remove.
+	(__gnu_debug::basic_string<>::compare(size_type, size_type, const basic_string<>&)):
+	Remove.
+	(__gnu_debug::basic_string<>::compare(size_type, size_type, const basic_string<>&,
+	size_type, size_type)): Remove.
+	* testsuite/util/testsuite_string.h [_GLIBCXX_TEST_DEBUG_STRING]: Include <debug/string>.
+	* testsuite/21_strings/basic_string/operations/compare/char/1.cc: Include testsuite_string.h
+	and use __gnu_test::string.
+	* testsuite/21_strings/basic_string/operations/compare/char/13650.cc: Likewise.
+	* testsuite/21_strings/basic_string/operations/compare/char/2.cc: Likewise.
+	* testsuite/21_strings/basic_string/operations/rfind/char/1.cc: Likewise.
+	* testsuite/21_strings/basic_string/operations/rfind/char/2.cc: Likewise.
+	* testsuite/21_strings/basic_string/operations/rfind/char/3.cc: Likewise.
+	* testsuite/21_strings/basic_string/operations/compare/wchar_t/1.cc:
+	Include testsuite_string.h
+	and use __gnu_test::wstring.
+	* testsuite/21_strings/basic_string/operations/compare/wchar_t/13650.cc: Likewise.
+	* testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc: Likewise.
+
+2022-10-12  Patrick Palka  <ppalka@redhat.com>
+
+	* include/std/ranges (repeat_view): Define.
+	(repeat_view::_Iterator): Define.
+	(views::__detail::__can_repeat_view): Define.
+	(views::__detail::__can_bounded_repeat_view): Define.
+	(views::_Repeat, views::repeat): Define.
+	* testsuite/std/ranges/repeat/1.cc: New test.
+
+2022-10-12  Martin Liska  <mliska@suse.cz>
+
+	* configure: Regenerate.
+
 2022-10-11  Jonathan Wakely  <jwakely@redhat.com>
 
 	PR bootstrap/107221
-- 
cgit v1.1