[gcc r13-7786] Daily bump.

[gcc r13-7786] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:5d950cc6d7a918666acf1ad74caad15a6d725128

commit r13-7786-g5d950cc6d7a918666acf1ad74caad15a6d725128
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Sat Sep 9 00:20:03 2023 +0000

    Daily bump.

Diff:
---
 gcc/DATESTAMP          |  2 +-
 libstdc++-v3/ChangeLog | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 68d943433ec3..cfb056617413 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20230908
+20230909
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index db76dbd6db9a..3abbedfc5b3a 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,38 @@
+2023-09-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	* doc/xml/manual/test.xml: Update reference to -std=gnu++14 as
+	the default.
+	* doc/html/manual/test.html: Regenerate.
+
+2023-09-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/20_util/uses_allocator/lwg3677.cc: Fix -std in
+	dg-options.
+
+2023-09-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/27_io/filesystem/path/108636.cc: Add dg-require for
+	filesystem support.
+
+2023-09-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
+
+	* src/c++20/tzdb.cc (tzdb::current_zone): Check configure macros
+	for POSIX readlink before using filesystem::read_symlink.
+
+2023-09-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/format (__format::_Sink::_M_reset): Change second
+	argument from iterator to offset.
+
 2023-08-22  Jonathan Wakely  <jwakely@redhat.com>
 
 	Backported from master: