[libc++] [P1032] Misc constexpr bits in <iterator>, <string_view>, <tuple>, <utility>.
This completes the implementation of P1032's changes to <iterator>,
<string_view>, <tuple>, and <utility> in C++20.
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1032r1.html
Drive-by fix a couple of unintended rvalues in "*iterators*/*.fail.cpp".
Differential Revision: https://reviews.llvm.org/D96385
GitOrigin-RevId: 06e2b737aa0347b42e8bf37cb00a053eab0a9393
diff --git a/docs/FeatureTestMacroTable.rst b/docs/FeatureTestMacroTable.rst
index 693a668..40a6bda 100644
--- a/docs/FeatureTestMacroTable.rst
+++ b/docs/FeatureTestMacroTable.rst
@@ -208,17 +208,17 @@
------------------------------------------------- -----------------
``__cpp_lib_constexpr_functional`` ``201907L``
------------------------------------------------- -----------------
- ``__cpp_lib_constexpr_iterator`` *unimplemented*
+ ``__cpp_lib_constexpr_iterator`` ``201811L``
------------------------------------------------- -----------------
``__cpp_lib_constexpr_memory`` ``201811L``
------------------------------------------------- -----------------
``__cpp_lib_constexpr_numeric`` ``201911L``
------------------------------------------------- -----------------
- ``__cpp_lib_constexpr_string`` *unimplemented*
+ ``__cpp_lib_constexpr_string`` ``201811L``
------------------------------------------------- -----------------
- ``__cpp_lib_constexpr_string_view`` *unimplemented*
+ ``__cpp_lib_constexpr_string_view`` ``201811L``
------------------------------------------------- -----------------
- ``__cpp_lib_constexpr_tuple`` *unimplemented*
+ ``__cpp_lib_constexpr_tuple`` ``201811L``
------------------------------------------------- -----------------
``__cpp_lib_constexpr_utility`` ``201811L``
------------------------------------------------- -----------------