+2022-01-04 Jonathan Wakely <jwakely@redhat.com>
+
+ Backported from master:
+ 2021-08-28 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/alloc_traits.h (allocator_traits): Add explicit
+ specialization for allocator<void>. Improve doxygen comments.
+ * include/bits/allocator.h (allocator<void>): Restore for the
+ versioned namespace.
+ (allocator<void>::construct, allocator<void>::destroy): Remove.
+ * include/ext/extptr_allocator.h (_Extptr_allocator<void>):
+ Add default constructor and converting constructor.
+
2021-12-10 Thomas Rodgers <rodgert@twrodgers.com>
Backported from master: