[gcc r13-8018] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:6dafb7d99542e53b7889a1eeef6a1c0cd0bb1640

commit r13-8018-g6dafb7d99542e53b7889a1eeef6a1c0cd0bb1640
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Thu Nov 9 00:20:49 2023 +0000

    Daily bump.

Diff:
---
 gcc/DATESTAMP                     |  2 +-
 libgcc/config/avr/libf7/ChangeLog |  4 ++
 libstdc++-v3/ChangeLog            | 92 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 97 insertions(+), 1 deletion(-)

diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 6e86c0eb532..aa6461fc3bf 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20231108
+20231109
diff --git a/libgcc/config/avr/libf7/ChangeLog b/libgcc/config/avr/libf7/ChangeLog
index 8a1bba80127..601f935a865 100644
--- a/libgcc/config/avr/libf7/ChangeLog
+++ b/libgcc/config/avr/libf7/ChangeLog
@@ -1,3 +1,7 @@
+2023-11-08  Georg-Johann Lay  <avr@gjlay.de>
+
+	* libf7-asm.sx (mul_mant) [AVR_HAVE_MUL]: Tweak code.
+
 2023-10-19  Georg-Johann Lay  <avr@gjlay.de>
 
 	* libf7-asm.sx (mul_mant): Implement for devices without MUL.
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index ac3cc5fde62..0df0cda4d9f 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,95 @@
+2023-11-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-11-06  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/expected (expected::and_then, expected::or_else):
+	Add string literals to static assertions.
+	* include/std/optional (optional::and_then, optional::or_else):
+	Likewise.
+
+2023-11-08  Feng Jisen  <J1senn@outlook.com>
+
+	Backported from master:
+	2023-11-04  Feng Jisen  <J1senn@outlook.com>
+
+	* include/bits/utility.h (_Nth_type): Remove redundant partial
+	specialization.
+
+2023-11-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-11-02  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/112314
+	* include/std/string_view (string_view::remove_suffix): Add
+	debug assertion.
+	* testsuite/21_strings/basic_string_view/modifiers/remove_prefix/debug.cc:
+	New test.
+	* testsuite/21_strings/basic_string_view/modifiers/remove_suffix/debug.cc:
+	New test.
+
+2023-11-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-11-02  Jonathan Wakely  <jwakely@redhat.com>
+
+	* acinclude.m4 (GLIBCXX_ENABLE_C99): Fix snprintf checks.
+	* configure: Regenerate.
+
+2023-11-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-10-26  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/112089
+	* include/std/shared_mutex (shared_lock::unlock): Change errc
+	constant to operation_not_permitted.
+	* testsuite/30_threads/shared_lock/locking/112089.cc: New test.
+
+2023-11-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-10-26  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/20_util/duration/io.cc: Double timeout using
+	dg-timeout-factor.
+	* testsuite/std/time/day/io.cc: Likewise.
+	* testsuite/std/time/format.cc: Likewise.
+	* testsuite/std/time/hh_mm_ss/io.cc: Likewise.
+	* testsuite/std/time/month/io.cc: Likewise.
+	* testsuite/std/time/month_day/io.cc: Likewise.
+	* testsuite/std/time/month_day_last/io.cc: Likewise.
+	* testsuite/std/time/month_weekday/io.cc: Likewise.
+	* testsuite/std/time/month_weekday_last/io.cc: Likewise.
+	* testsuite/std/time/weekday/io.cc: Likewise.
+	* testsuite/std/time/weekday_indexed/io.cc: Likewise.
+	* testsuite/std/time/weekday_last/io.cc: Likewise.
+	* testsuite/std/time/year/io.cc: Likewise.
+	* testsuite/std/time/year_month/io.cc: Likewise.
+	* testsuite/std/time/year_month_day/io.cc: Likewise.
+	* testsuite/std/time/year_month_day_last/io.cc: Likewise.
+	* testsuite/std/time/year_month_weekday/io.cc: Likewise.
+	* testsuite/std/time/year_month_weekday_last/io.cc: Likewise.
+	* testsuite/std/time/zoned_time/io.cc: Likewise.
+
+2023-11-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-10-21  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/bits/basic_string.h (_M_init_local_buf()): New
+	function.
+	(_M_use_local_data()): Use _M_init_local_buf.
+	(basic_string(), basic_string(const Alloc&))
+	(basic_string(basic_string&&))
+	(basic_string(basic_string&&, const Alloc&)): Use
+	_M_init_local_buf instead of _M_use_local_data().
+	* include/bits/basic_string.tcc (swap(basic_string&))
+	(_M_construct(InIter, InIter, input_iterator_tag))
+	(_M_construct(InIter, InIter, forward_iterator_tag))
+	(_M_construct(size_type, CharT), reserve()): Likewise.
+
 2023-11-06  Ian Lance Taylor  <iant@golang.org>
 
 	PR libbacktrace/111315