diff --git a/ChangeLog b/ChangeLog
index 61b05aa486c..5401de64179 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2023-04-18  Jakub Jelinek  <jakub@redhat.com>
+
+	* configure.ac: For --enable-languages= mentioning explicitly
+	rust emit an error, if included in all etc., silently disable
+	rust.
+	* configure: Regenerated.
+
 2023-04-06  Indu Bhagat  <indu.bhagat@oracle.com>
 
 	* MAINTAINERS: Add myself.
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 23f795d83ea..56d047eb468 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,22 @@
+2023-04-18  Kito Cheng  <kito.cheng@sifive.com>
+
+	Backported from master:
+	2023-04-18  Kito Cheng  <kito.cheng@sifive.com>
+
+	* doc/extend.texi (Target Builtins): Add RISC-V Vector
+	Intrinsics.
+	(RISC-V Vector Intrinsics): Document GCC implemented which
+	version of RISC-V vector intrinsics and its reference.
+
+2023-04-18  Richard Biener  <rguenther@suse.de>
+
+	Backported from master:
+	2023-04-18  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/109539
+	* gimple-ssa-warn-access.cc (pass_waccess::check_pointer_uses):
+	Re-implement pointer relatedness for PHIs.
+
 2023-04-17  Martin Jambor  <mjambor@suse.cz>
 
 	PR ipa/107769
diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 378aed56acf..59726e584d2 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20230418
+20230419
diff --git a/libsanitizer/ChangeLog b/libsanitizer/ChangeLog
index 8a9e51fb1bc..c3cc61df59d 100644
--- a/libsanitizer/ChangeLog
+++ b/libsanitizer/ChangeLog
@@ -1,3 +1,11 @@
+2023-04-18  Iain Sandoe  <iain@sandoe.co.uk>
+
+	Backported from master:
+	2023-04-18  Iain Sandoe  <iain@sandoe.co.uk>
+
+	* configure.tgt: Unsupport Darwin22+ until a mechanism can be found
+	to locate dyld in the shared cache.
+
 2023-01-31  H.J. Lu  <hjl.tools@gmail.com>
 
 	PR sanitizer/108106
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 72fcf35baaa..05952260703 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,83 @@
+2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
+
+	Backported from master:
+	2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/108969
+	* config/abi/pre/gnu.ver: Fix preprocessor condition.
+
+2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
+
+	PR libstdc++/108969
+	* src/Makefile.am: Move globals_io.cc to here.
+	* src/Makefile.in: Regenerate.
+	* src/c++98/Makefile.am: Remove globals_io.cc from here.
+	* src/c++98/Makefile.in: Regenerate.
+	* src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
+	symbol name and then export with GLIBCXX_3.4.31 symver.
+	(cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
+	* config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
+	Regenerate.
+	* config/abi/post/i486-linux-gnu/baseline_symbols.txt:
+	Regenerate.
+	* config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
+	Regenerate.
+	* config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
+	Regenerate.
+	* config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
+	Regenerate.
+	* config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
+	Regenerate.
+	* config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
+	Regenerate.
+	* config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
+	Regenerate.
+	* config/abi/pre/gnu.ver: Add iostream objects to new symver.
+
+2023-04-18  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-04-18  Patrick Palka  <ppalka@redhat.com>
+
+	PR libstdc++/108827
+	* include/bits/ranges_cmp.h (__cpp_lib_ranges): Bump value
+	for C++23.
+	* include/std/ranges (range_adaptor_closure): Define for C++23.
+	* include/std/version (__cpp_lib_ranges): Bump value for
+	C++23.
+	* testsuite/std/ranges/version_c++23.cc: Bump expected value
+	of __cpp_lib_ranges.
+	* testsuite/std/ranges/range_adaptor_closure.cc: New test.
+
+2023-04-18  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-04-18  Patrick Palka  <ppalka@redhat.com>
+
+	* include/bits/ranges_algo.h (__cpp_lib_ranges_contains):
+	Define for C++23.
+	(__cpp_lib_ranges_iota): Likewise.
+	(__cpp_lib_ranges_find_last): Likewise.
+	(__cpp_lib_fold): Rename to ...
+	(__cpp_lib_ranges_fold): ... this.
+	* include/std/version: As above.
+	* testsuite/25_algorithms/fold_left/1.cc: Adjust after
+	renaming __cpp_lib_fold.
+	* testsuite/std/ranges/version_c++23.cc: Verify values
+	of the above feature-test macros.
+
+2023-04-18  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-04-18  Patrick Palka  <ppalka@redhat.com>
+
+	PR libstdc++/109525
+	* include/std/ranges (views::_AsConst::operator()): Add
+	missing const to constant_range test.
+	* testsuite/std/ranges/adaptors/as_const/1.cc (test02):
+	Improve formatting.  Adjust expected type of v2.
+	(test03): New test.
+
 2023-04-14  Patrick Palka  <ppalka@redhat.com>
 
 	* include/bits/ranges_base.h (const_iterator_t): Define for C++23.