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Merged
merged 8 commits into from
Apr 5, 2024
Merged

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

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46c4371
[libc++] P2872R2: Remove ``wstring_convert`` From C++26
H-G-Hristov Mar 29, 2024
49b9c75
Fixed formatting
H-G-Hristov Mar 29, 2024
75baca9
Try to fix CI
H-G-Hristov Mar 29, 2024
c21ccd1
Try to fix CI
H-G-Hristov Mar 29, 2024
bde28c4
Try to fix CI
H-G-Hristov Mar 29, 2024
63c5d73
Updated Release notes
H-G-Hristov Mar 29, 2024
51e3bb6
Updated Release notes
H-G-Hristov Mar 29, 2024
abc8468
Updated status pages and release notes
H-G-Hristov Apr 4, 2024
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4 changes: 4 additions & 0 deletions libcxx/docs/ReleaseNotes/19.rst
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Expand Up @@ -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``

Expand All @@ -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
-------------------------

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2 changes: 1 addition & 1 deletion libcxx/docs/Status/Cxx2cPapers.csv
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Expand Up @@ -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|"
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8 changes: 6 additions & 2 deletions libcxx/docs/UsingLibcxx.rst
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Expand Up @@ -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**:
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Thanks!

This macro is used to re-enable the function
``std::shared_ptr<...>::unique()``.

Expand Down Expand Up @@ -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()``.

Expand All @@ -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
=================

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8 changes: 6 additions & 2 deletions libcxx/include/locale
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Expand Up @@ -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;
Expand Down Expand Up @@ -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:
Expand Down Expand Up @@ -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>,
Expand Down Expand Up @@ -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
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5 changes: 5 additions & 0 deletions libcxx/modules/std/locale.inc
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Expand Up @@ -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
2 changes: 1 addition & 1 deletion libcxx/test/libcxx/input.output/file.streams/fstreams/fstream.cons/wchar_pointer.pass.cpp
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Expand Up @@ -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>
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2 changes: 1 addition & 1 deletion ...est/libcxx/input.output/file.streams/fstreams/fstream.members/open_wchar_pointer.pass.cpp
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Expand Up @@ -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>
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2 changes: 1 addition & 1 deletion libcxx/test/libcxx/input.output/file.streams/fstreams/ofstream.cons/wchar_pointer.pass.cpp
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Expand Up @@ -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>
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2 changes: 1 addition & 1 deletion ...st/libcxx/input.output/file.streams/fstreams/ofstream.members/open_wchar_pointer.pass.cpp
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Expand Up @@ -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>
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2 changes: 1 addition & 1 deletion ...localization/locales/locale.convenience/conversions/conversions.string/ctor_move.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion .../std/localization/locales/locale.convenience/conversions/conversions.buffer/ctor.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion .../localization/locales/locale.convenience/conversions/conversions.buffer/overflow.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...localization/locales/locale.convenience/conversions/conversions.buffer/pbackfail.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...std/localization/locales/locale.convenience/conversions/conversions.buffer/rdbuf.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...d/localization/locales/locale.convenience/conversions/conversions.buffer/seekoff.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...std/localization/locales/locale.convenience/conversions/conversions.buffer/state.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion .../std/localization/locales/locale.convenience/conversions/conversions.buffer/test.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...localization/locales/locale.convenience/conversions/conversions.buffer/underflow.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...localization/locales/locale.convenience/conversions/conversions.string/converted.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...alization/locales/locale.convenience/conversions/conversions.string/ctor_codecvt.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...ion/locales/locale.convenience/conversions/conversions.string/ctor_codecvt_state.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...localization/locales/locale.convenience/conversions/conversions.string/ctor_copy.pass.cpp
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Expand Up @@ -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>

Expand Down
2 changes: 1 addition & 1 deletion ...zation/locales/locale.convenience/conversions/conversions.string/ctor_err_string.pass.cpp
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Expand Up @@ -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>

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2 changes: 2 additions & 0 deletions ...td/localization/locales/locale.convenience/conversions/conversions.string/depr.verify.cpp
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Expand Up @@ -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

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2 changes: 1 addition & 1 deletion ...ocalization/locales/locale.convenience/conversions/conversions.string/from_bytes.pass.cpp
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Expand Up @@ -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>

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2 changes: 1 addition & 1 deletion ...std/localization/locales/locale.convenience/conversions/conversions.string/state.pass.cpp
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Expand Up @@ -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>

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2 changes: 1 addition & 1 deletion .../localization/locales/locale.convenience/conversions/conversions.string/to_bytes.pass.cpp
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Expand Up @@ -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>

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2 changes: 1 addition & 1 deletion ...std/localization/locales/locale.convenience/conversions/conversions.string/types.pass.cpp
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Expand Up @@ -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>,
Expand Down