+2024-03-20 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/std/iterator (__cpp_lib_null_iterators): Define regardless of
+ _GLIBCXX_DEBUG.
+ * include/std/version (__cpp_lib_null_iterators): Likewise.
+
+2024-03-20 François Dumont <fdumont@gcc.gnu.org>
+
+ Backported from master:
+ 2024-03-18 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance):
+ Accept 0 offset advance on value-initialized iterator.
+ * testsuite/23_containers/vector/debug/n3644.cc: New test case.
+
+2024-03-20 François Dumont <fdumont@gcc.gnu.org>
+
+ Backported from master:
+ 2024-03-18 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/debug/safe_local_iterator.tcc
+ (_Safe_local_iterator::_M_valid_range): Add _M_value_initialized and
+ _M_singular checks.
+ * testsuite/23_containers/unordered_set/debug/114316.cc: New test case.
+
2024-03-18 Jonathan Wakely <jwakely@redhat.com>
Backported from master: