[libc++] P2872R3: Remove wstring_convert From C++26 (#87100)

H-G-Hristov · web-flow · commit a83443609927 · 2024-04-05T22:04:07.000+03:00
Implements: https://wg21.link/P2872R3
diff --git a/libcxx/docs/ReleaseNotes/19.rst b/libcxx/docs/ReleaseNotes/19.rst
@@ -43,6 +43,7 @@ Implemented Papers
 - P2819R2 - Add ``tuple`` protocol to ``complex``
 - P2495R3 - Interfacing ``stringstream``\s with ``string_view``
 - P2867R2 - Remove Deprecated ``strstream``\s From C++26
+- P2872R3 - Remove ``wstring_convert`` From C++26
 - P2302R4 - ``std::ranges::contains``
 - P1659R3 - ``std::ranges::starts_with`` and ``std::ranges::ends_with``
 
@@ -57,6 +58,9 @@ Improvements and New Features
 
 - The ``_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM`` macro has been added to make the declarations in ``<strstream>`` available.
 
+- The ``_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT`` macro has been added to make the declarations in ``<locale>``
+  available.
+
 Deprecations and Removals
 -------------------------
 
diff --git a/libcxx/docs/Status/Cxx2cPapers.csv b/libcxx/docs/Status/Cxx2cPapers.csv
@@ -49,7 +49,7 @@
 "`P2875R4 <https://wg21.link/P2875R4>`__","LWG","Undeprecate ``polymorphic_allocator::destroy`` for C++26","Tokyo March 2024","|Complete|","15.0",""
 "`P2867R2 <https://wg21.link/P2867R2>`__","LWG","Remove Deprecated ``strstreams`` From C++26","Tokyo March 2024","|Complete|","19.0",""
 "`P2869R4 <https://wg21.link/P2869R4>`__","LWG","Remove Deprecated ``shared_ptr`` Atomic Access APIs from C++26","Tokyo March 2024","","",""
-"`P2872R3 <https://wg21.link/P2872R3>`__","LWG","Remove ``wstring_convert`` From C++26","Tokyo March 2024","","",""
+"`P2872R3 <https://wg21.link/P2872R3>`__","LWG","Remove ``wstring_convert`` From C++26","Tokyo March 2024","|Complete|","19.0",""
 "`P3107R5 <https://wg21.link/P3107R5>`__","LWG","Permit an efficient implementation of ``std::print``","Tokyo March 2024","","","|format| |DR|"
 "`P3142R0 <https://wg21.link/P3142R0>`__","LWG","Printing Blank Lines with ``println``","Tokyo March 2024","","","|format|"
 "`P2845R8 <https://wg21.link/P2845R8>`__","LWG","Formatting of ``std::filesystem::path``","Tokyo March 2024","","","|format|"
diff --git a/libcxx/docs/UsingLibcxx.rst b/libcxx/docs/UsingLibcxx.rst
@@ -234,7 +234,7 @@ C++17 Specific Configuration Macros
 
 C++20 Specific Configuration Macros
 -----------------------------------
-**_LIBCPP_ENABLE_CXX20_REMOVED_SHARED_PTR_UNIQUE**
+**_LIBCPP_ENABLE_CXX20_REMOVED_SHARED_PTR_UNIQUE**:
   This macro is used to re-enable the function
   ``std::shared_ptr<...>::unique()``.
 
@@ -267,7 +267,7 @@ C++26 Specific Configuration Macros
 **_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT**:
   This macro is used to re-enable all named declarations in ``<codecvt>``.
 
-**_LIBCPP_ENABLE_CXX26_REMOVED_STRING_RESERVE**
+**_LIBCPP_ENABLE_CXX26_REMOVED_STRING_RESERVE**:
   This macro is used to re-enable the function
   ``std::basic_string<...>::reserve()``.
 
@@ -277,6 +277,10 @@ C++26 Specific Configuration Macros
 **_LIBCPP_ENABLE_CXX26_REMOVED_STRSTREAM**:
   This macro is used to re-enable all named declarations in ``<strstream>``.
 
+**_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT**:
+  This macro is used to re-enable the ``wstring_convert`` and ``wbuffer_convert``
+  in ``<locale>``.
+
 Libc++ Extensions
 =================
 
diff --git a/libcxx/include/locale b/libcxx/include/locale
@@ -84,7 +84,7 @@ template <class charT> charT tolower(charT c, const locale& loc);
 template<class Codecvt, class Elem = wchar_t,
          class Wide_alloc = allocator<Elem>,
          class Byte_alloc = allocator<char>>
-class wstring_convert
+class wstring_convert                                      // Removed in C++26
 {
 public:
     typedef basic_string<char, char_traits<char>, Byte_alloc> byte_string;
@@ -119,7 +119,7 @@ public:
 };
 
 template <class Codecvt, class Elem = wchar_t, class Tr = char_traits<Elem>>
-class wbuffer_convert
+class wbuffer_convert                                               // Removed in C++26
     : public basic_streambuf<Elem, Tr>
 {
 public:
@@ -3107,6 +3107,8 @@ extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS messages_byname<char>;
 extern template class _LIBCPP_EXTERN_TEMPLATE_TYPE_VIS messages_byname<wchar_t>;
 #endif
 
+#if _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT)
+
 template <class _Codecvt,
           class _Elem      = wchar_t,
           class _WideAlloc = allocator<_Elem>,
@@ -3712,6 +3714,8 @@ wbuffer_convert<_Codecvt, _Elem, _Tr>* wbuffer_convert<_Codecvt, _Elem, _Tr>::__
 
 _LIBCPP_SUPPRESS_DEPRECATED_POP
 
+#endif // _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT)
+
 _LIBCPP_END_NAMESPACE_STD
 
 _LIBCPP_POP_MACROS
diff --git a/libcxx/modules/std/locale.inc b/libcxx/modules/std/locale.inc
@@ -67,10 +67,15 @@ export namespace std {
   using std::messages_base;
   using std::messages_byname;
 
+#  if _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT)
+
   // [depr.conversions.buffer]
   using std::wbuffer_convert;
 
   // [depr.conversions.string]
   using std::wstring_convert;
+
+#  endif // _LIBCPP_STD_VER < 26 || defined(_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT)
+
 #endif // _LIBCPP_HAS_NO_LOCALIZATION
 } // namespace std
diff --git a/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.cons/wchar_pointer.pass.cpp b/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.cons/wchar_pointer.pass.cpp
@@ -18,7 +18,7 @@
 // UNSUPPORTED: no-wide-characters
 
 // TODO: This should not be necessary
-// ADDITIONAL_COMPILE_FLAGS:-D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS:-D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 #include <fstream>
 #include <cassert>
diff --git a/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.members/open_wchar_pointer.pass.cpp b/libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.members/open_wchar_pointer.pass.cpp
@@ -18,7 +18,7 @@
 // UNSUPPORTED: no-wide-characters
 
 // TODO: This should not be necessary
-// ADDITIONAL_COMPILE_FLAGS:-D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS:-D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 #include <fstream>
 #include <cassert>
diff --git a/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.cons/wchar_pointer.pass.cpp b/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.cons/wchar_pointer.pass.cpp
@@ -18,7 +18,7 @@
 // UNSUPPORTED: no-wide-characters
 
 // TODO: This should not be necessary
-// ADDITIONAL_COMPILE_FLAGS:-D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS:-D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 #include <fstream>
 #include <cassert>
diff --git a/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.members/open_wchar_pointer.pass.cpp b/libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.members/open_wchar_pointer.pass.cpp
@@ -18,7 +18,7 @@
 // UNSUPPORTED: no-wide-characters
 
 // TODO: This should not be necessary
-// ADDITIONAL_COMPILE_FLAGS:-D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS:-D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 #include <fstream>
 #include <cassert>
diff --git a/libcxx/test/libcxx/localization/locales/locale.convenience/conversions/conversions.string/ctor_move.pass.cpp b/libcxx/test/libcxx/localization/locales/locale.convenience/conversions/conversions.string/ctor_move.pass.cpp
@@ -10,7 +10,7 @@
 
 // UNSUPPORTED: c++03
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // <locale>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/ctor.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/ctor.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wbuffer_convert<Codecvt, Elem, Tr>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/overflow.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/overflow.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wbuffer_convert<Codecvt, Elem, Tr>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/pbackfail.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/pbackfail.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wbuffer_convert<Codecvt, Elem, Tr>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/rdbuf.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/rdbuf.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wbuffer_convert<Codecvt, Elem, Tr>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/seekoff.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/seekoff.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wbuffer_convert<Codecvt, Elem, Tr>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/state.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/state.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wbuffer_convert<Codecvt, Elem, Tr>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/test.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/test.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wbuffer_convert<Codecvt, Elem, Tr>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/underflow.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.buffer/underflow.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wbuffer_convert<Codecvt, Elem, Tr>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/converted.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/converted.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt_state.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt_state.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_copy.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_copy.pass.cpp
@@ -12,7 +12,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_err_string.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/ctor_err_string.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/depr.verify.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/depr.verify.cpp
@@ -6,6 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
+
 // UNSUPPORTED: c++03, c++11, c++14, c++26
 // UNSUPPORTED: no-wide-characters
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/from_bytes.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/from_bytes.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/state.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/state.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/to_bytes.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/to_bytes.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // wstring_convert<Codecvt, Elem, Wide_alloc, Byte_alloc>
 
diff --git a/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/types.pass.cpp b/libcxx/test/std/localization/locales/locale.convenience/conversions/conversions.string/types.pass.cpp
@@ -8,7 +8,7 @@
 
 // <locale>
 
-// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT
 
 // template<class Codecvt, class Elem = wchar_t,
 //          class Wide_alloc = allocator<Elem>,
