[gcc r12-9499] Daily bump.

[gcc r12-9499] Daily bump.

[GCC Administrator]

https://gcc.gnu.org/g:786e4fa156aa1973344af232c5370b0bc725e102

commit r12-9499-g786e4fa156aa1973344af232c5370b0bc725e102
Author: GCC Administrator <gccadmin@gcc.gnu.org>
Date:   Sun Apr 30 00:20:31 2023 +0000

    Daily bump.

Diff:
---
 gcc/DATESTAMP          |  2 +-
 libstdc++-v3/ChangeLog | 44 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/gcc/DATESTAMP b/gcc/DATESTAMP
index 24dd3ed9702..8de8e66b47c 100644
--- a/gcc/DATESTAMP
+++ b/gcc/DATESTAMP
@@ -1 +1 @@
-20230429
+20230430
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 519ce8a133f..22aba059098 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,47 @@
+2023-04-29  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-04-12  Patrick Palka  <ppalka@redhat.com>
+
+	* include/std/ranges (lazy_split_view::_OuterIter::_OuterIter):
+	Propagate _M_trailing_empty in the const-converting constructor
+	as per LWG 3904.
+	* testsuite/std/ranges/adaptors/lazy_split.cc (test12): New test.
+
+2023-04-29  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-03-14  Patrick Palka  <ppalka@redhat.com>
+
+	* include/bits/stl_iterator.h (move_iterator::_S_iter_concept):
+	Define.
+	(__cpp_lib_move_iterator_concept): Define for C++20.
+	(move_iterator::iterator_concept): Strengthen as per P2520R0.
+	* include/std/version (__cpp_lib_move_iterator_concept): Define
+	for C++20.
+	* testsuite/24_iterators/move_iterator/p2520r0.cc: New test.
+
+2023-04-29  Patrick Palka  <ppalka@redhat.com>
+
+	Backported from master:
+	2023-03-09  Patrick Palka  <ppalka@redhat.com>
+
+	PR libstdc++/108362
+	* include/std/ranges (__detail::__can_single_view): New concept.
+	(_Single::operator()): Constrain it.  Move [[nodiscard]] to the
+	end of the function declarator.
+	(__detail::__can_iota_view): New concept.
+	(_Iota::operator()): Constrain it.  Move [[nodiscard]] to the
+	end of the function declarator.
+	(__detail::__can_istream_view): New concept.
+	(_Istream::operator()): Constrain it.  Move [[nodiscard]] to the
+	end of the function declarator.
+	* testsuite/std/ranges/iota/lwg3292_neg.cc: Prune "in
+	requirements" diagnostic.
+	* testsuite/std/ranges/iota/iota_view.cc (test07): New test.
+	* testsuite/std/ranges/istream_view.cc (test08): New test.
+	* testsuite/std/ranges/single_view.cc (test07): New test.
+
 2023-04-28  Patrick Palka  <ppalka@redhat.com>
 
 	Backported from master: