diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e8556ff32cc1f9833c484978a26aecec2f8e0df2..d6a51920b50d9f6eea65d75fc374a130d7602a66 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,14 @@
+2023-08-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
+
+	* config/i386/i386.cc (ix86_invalid_conversion): Fix grammar.
+
+2023-08-08  yulong  <shiyulong@iscas.ac.cn>
+
+	* config/riscv/riscv-v.cc (slide1_sew64_helper): Modify.
+
 2023-08-04  Georg-Johann Lay  <avr@gjlay.de>
 
 	* config/avr/avr-mcus.def (avr64dd14, avr64dd20, avr64dd28, avr64dd32)
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index d8204e010d0b7562d90cc73da3c4db3dfe9048e2..8974d32783c6c2c01cc0a692917135b7d3036dae 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20230808
+20230809
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 7e465bd1d766893f43d3bdfafccd4e6742a323f7..e63a6b6fe438791c6c4e85ba4bfbe5a7aa0a8c65 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,12 @@
+2023-08-08  yulong  <shiyulong@iscas.ac.cn>
+
+	* gcc.target/riscv/rvv/base/vslide1down-1.c: New test.
+	* gcc.target/riscv/rvv/base/vslide1down-2.c: New test.
+	* gcc.target/riscv/rvv/base/vslide1down-3.c: New test.
+	* gcc.target/riscv/rvv/base/vslide1up-1.c: New test.
+	* gcc.target/riscv/rvv/base/vslide1up-2.c: New test.
+	* gcc.target/riscv/rvv/base/vslide1up-3.c: New test.
+
 2023-08-07  Patrick Palka  <ppalka@redhat.com>
 
 	Backported from master:
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 2cd7b9ba62b69a30b3a949115179240f1b387b5d..161d1baa18c67154cd2582a6be2bc51907739de1 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,34 @@
+2023-08-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/110860
+	* include/std/format (__formatter_fp::format): Do not use
+	__builtin_abs and __builtin_log10 with arbitrary floating-point
+	types.
+
+2023-08-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/110917
+	* include/std/format (__format::_Iter_sink<CharT, OutIter>):
+	Constrain partial specialization for contiguous iterators to
+	require the value type to be CharT.
+	* testsuite/std/format/functions/format_to.cc: New test.
+
+2023-08-08  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/110862
+	* include/std/format (_Scanner::_M_on_replacement_field):
+	Check for expected '}' before incrementing iterator.
+	* testsuite/std/format/string.cc: Check "{0:{0}" format string.
+
 2023-07-28  Jonathan Wakely  <jwakely@redhat.com>
 
 	Backported from master: