+2024-03-16 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2023-08-17 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/chrono_io.h (__units_suffix_misc): Remove.
+ (__units_suffix): Return a known suffix as string view, do not
+ write unknown suffixes to a buffer.
+ (__fmt_units_suffix): New function that formats the suffix using
+ std::format_to.
+ (operator<<, __chrono_formatter::_M_q): Use __fmt_units_suffix.
+ (__chrono_formatter::_M_Z): Correct lifetime of wstring.
+
+2024-03-16 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2024-03-04 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/114147
+ * include/std/tuple (tuple::tuple(allocator_arg_t, const Alloc&)):
+ Add missing overload of allocator-extended default constructor.
+ (tuple<T1,T2>::tuple(allocator_arg_t, const Alloc&)): Likewise.
+ * testsuite/20_util/tuple/cons/114147.cc: New test.
+
2024-03-15 Jonathan Wakely <jwakely@redhat.com>
* doc/xml/manual/status_cxx2023.xml: Close parenthesis.