diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3ad621b9ce2808f3246a02c3806926e081ca5696..c805c6d1b400262995f768c5a55800a016c5786f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,30 @@
+2023-07-19  Jakub Jelinek  <jakub@redhat.com>
+
+	Backported from master:
+	2023-07-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/110731
+	* wide-int.cc (wi::divmod_internal): Always unpack dividend and
+	divisor as UNSIGNED regardless of sgn.
+
+2023-07-19  Iain Sandoe  <iain@sandoe.co.uk>
+
+	Backported from master:
+	2023-07-13  Iain Sandoe  <iain@sandoe.co.uk>
+
+	PR target/110624
+	* config/darwin.h (DARWIN_PLATFORM_ID): New.
+	(LINK_COMMAND_A): Use DARWIN_PLATFORM_ID to pass OS, OS version
+	and SDK data to the static linker.
+
+2023-07-19  Iain Sandoe  <iain@sandoe.co.uk>
+
+	Backported from master:
+	2023-07-03  Iain Sandoe  <iain@sandoe.co.uk>
+
+	* config/darwin.h: Avoid duplicate multiply_defined specs on
+	earlier Darwin versions with shared libgcc.
+
 2023-07-18  Ju-Zhe Zhong  <juzhe.zhong@rivai.ai>
 
 	* config/riscv/riscv-vsetvl.cc (gen_vsetvl_pat): Add vl parameter.
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 2292579c26ff764c76fa5f2fd4099b97122a804d..4b8414aa23fdee0c09fdaebae679b32090139f67 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20230719
+20230720
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index e6d020c826d5105f2b4454e0bc8bf38e437803fd..7815d097f22917a8d5c4bf19f086f9a73f9c2628 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,22 @@
+2023-07-19  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-07-18  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/110535
+	* call.cc (add_conv_candidate): Check constraints.
+
+2023-07-19  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-06-11  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/110122
+	* pt.cc (lookup_template_class): Extend shortcut for looking up the
+	current class scope to consider outer class scopes too, and use
+	current_nonlambda_class_type instead of current_class_type.  Only
+	call coerce_template_parms when specializing a primary template.
+
 2023-07-17  Patrick Palka  <ppalka@redhat.com>
 
 	Backported from master:
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index cee99538a5938a1c59cf61cb54d0ea96b44b0835..2046b8586e9d7883ed40d97dd6ccce715a436887 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,44 @@
+2023-07-19  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-07-18  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/110535
+	* g++.dg/cpp2a/concepts-surrogate1.C: New test.
+	* g++.dg/cpp2a/concepts-surrogate2.C: New test.
+
+2023-07-19  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-06-11  Patrick Palka  <ppalka@redhat.com>
+
+	PR c++/110122
+	* g++.dg/cpp2a/nontype-class57.C: New test.
+	* g++.dg/cpp2a/nontype-class58.C: New test.
+
+2023-07-19  Jakub Jelinek  <jakub@redhat.com>
+
+	Backported from master:
+	2023-07-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR tree-optimization/110731
+	* gcc.dg/pr110731.c: New test.
+
+2023-07-19  Maciej W. Rozycki  <macro@embecosm.com>
+
+	Backported from master:
+	2023-07-11  Maciej W. Rozycki  <macro@embecosm.com>
+
+	* gcc.dg/vect/pr97428.c: Limit to `vect_double' targets.
+
+2023-07-19  Iain Sandoe  <iain@sandoe.co.uk>
+
+	Backported from master:
+	2023-07-03  Iain Sandoe  <iain@sandoe.co.uk>
+
+	* lib/g++.exp: Remove additional flag handled by Darwin specs.
+	* lib/obj-c++.exp: Likewise.
+
 2023-07-18  Harald Anlauf  <anlauf@gmx.de>
 
 	Backported from master:
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 3ce88a57a47f6fafa5306b450bec1ca40627289f..09184378bebfdab25b87897402bf4290531561dc 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,36 @@
+2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/109921
+	* src/c++17/floating_from_chars.cc (USE_STRTOF128_FOR_FROM_CHARS):
+	Only define when USE_STRTOD_FOR_FROM_CHARS is also defined.
+	(USE_STRTOD_FOR_FROM_CHARS): Do not undefine when long double is
+	binary64.
+	(from_chars(const char*, const char*, double&, chars_format)):
+	Check __LDBL_MANT_DIG__ == __DBL_MANT_DIG__ here.
+
+2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/110432
+	* acinclude.m4 (GLIBCXX_CHECK_INIT_PRIORITY): New.
+	* config.h.in: Regenerate.
+	* configure: Regenerate.
+	* configure.ac: Use GLIBCXX_CHECK_INIT_PRIORITY.
+	* include/std/iostream: Use new autoconf macro as well as
+	__has_attribute.
+	* src/c++98/ios_base_init.h: Use new autoconf macro instead of
+	__has_attribute.
+
+2023-07-19  Iain Sandoe  <iain@sandoe.co.uk>
+
+	Backported from master:
+	2023-07-03  Iain Sandoe  <iain@sandoe.co.uk>
+
+	* testsuite/lib/libstdc++.exp: Remove additional flag handled
+	by Darwin specs.
+
 2023-07-18  Jonathan Wakely  <jwakely@redhat.com>
 
 	Backported from master: