+2023-12-06 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2021-11-01 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/debug/stl_iterator.h (__valid_range): Add constexpr
+ for C++20. Qualify call to avoid ADL.
+ (__get_distance, __can_advance, __unsafe, __base): Likewise.
+ * testsuite/25_algorithms/move/constexpr.cc: Also check with
+ std::reverse_iterator arguments.
+
+2023-12-06 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2023-11-02 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/112314
+ * include/std/string_view (string_view::remove_suffix): Add
+ debug assertion.
+ * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/debug.cc:
+ New test.
+ * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/debug.cc:
+ New test.
+
+2023-12-06 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2023-11-17 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/utility (in_range): Rename _Up parameter to _Res.
+
2023-11-15 Jonathan Wakely <jwakely@redhat.com>
Backported from master: