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[libc++] Fix header deprecations #163356

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Merged
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Nov 18, 2025
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[libc++] Fix header deprecations #163356

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6 changes: 6 additions & 0 deletions libcxx/include/__config
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Expand Up @@ -534,6 +534,12 @@ typedef __char32_t char32_t;
# define _LIBCPP_DEPRECATED_(m)
# endif

# if defined(__DEPRECATED) && __DEPRECATED && !defined(_LIBCPP_DISABLE_DEPRECATION_WARNINGS)
# define _LIBCPP_DIAGNOSE_DEPRECATED_HEADERS 1
# else
# define _LIBCPP_DIAGNOSE_DEPRECATED_HEADERS 0
# endif

# if !defined(_LIBCPP_CXX03_LANG)
# define _LIBCPP_DEPRECATED_IN_CXX11 _LIBCPP_DEPRECATED
# else
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14 changes: 3 additions & 11 deletions libcxx/include/ccomplex
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Expand Up @@ -26,18 +26,10 @@
# pragma GCC system_header
# endif

# if _LIBCPP_STD_VER >= 20

using __standard_header_ccomplex
_LIBCPP_DEPRECATED_("removed in C++20. Include <complex> instead.") _LIBCPP_NODEBUG = void;
using __use_standard_header_ccomplex _LIBCPP_NODEBUG = __standard_header_ccomplex;

# elif _LIBCPP_STD_VER >= 17

using __standard_header_ccomplex _LIBCPP_DEPRECATED_("Include <complex> instead.") _LIBCPP_NODEBUG = void;
using __use_standard_header_ccomplex _LIBCPP_NODEBUG = __standard_header_ccomplex;

# if _LIBCPP_STD_VER >= 17 && !__building_module(std) && _LIBCPP_DIAGNOSE_DEPRECATED_HEADERS
# warning <ccomplex> is deprecated in C++17 and removed in C++20. Include <complex> instead.
# endif

#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_CCOMPLEX
9 changes: 3 additions & 6 deletions libcxx/include/ciso646
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Expand Up @@ -24,13 +24,10 @@
# pragma GCC system_header
# endif

# if _LIBCPP_STD_VER >= 20

using __standard_header_ciso646
_LIBCPP_DEPRECATED_("removed in C++20. Include <version> instead.") _LIBCPP_NODEBUG = void;
using __use_standard_header_ciso646 _LIBCPP_NODEBUG = __standard_header_ciso646;

# if _LIBCPP_STD_VER >= 20 && !__building_module(std) && _LIBCPP_DIAGNOSE_DEPRECATED_HEADERS
# warning <ciso646> is removed in C++20. Include <version> instead.
# endif

#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_CISO646
13 changes: 3 additions & 10 deletions libcxx/include/cstdalign
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Expand Up @@ -43,17 +43,10 @@ Macros:
# undef __alignof_is_defined
# define __alignof_is_defined 1

# if _LIBCPP_STD_VER >= 20

using __standard_header_cstdalign _LIBCPP_DEPRECATED_("removed in C++20.") _LIBCPP_NODEBUG = void;
using __use_standard_header_cstdalign _LIBCPP_NODEBUG = __standard_header_cstdalign;

# elif _LIBCPP_STD_VER >= 17

using __standard_header_cstdalign _LIBCPP_DEPRECATED _LIBCPP_NODEBUG = void;
using __use_standard_header_cstdalign _LIBCPP_NODEBUG = __standard_header_cstdalign;

# if _LIBCPP_STD_VER >= 17 && !__building_module(std) && _LIBCPP_DIAGNOSE_DEPRECATED_HEADERS
# warning <cstdalign> is deprecated in C++17 and removed in C++20.
# endif

#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_CSTDALIGN
13 changes: 3 additions & 10 deletions libcxx/include/cstdbool
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Expand Up @@ -31,17 +31,10 @@ Macros:
# undef __bool_true_false_are_defined
# define __bool_true_false_are_defined 1

# if _LIBCPP_STD_VER >= 20

using __standard_header_cstdbool _LIBCPP_DEPRECATED_("removed in C++20.") _LIBCPP_NODEBUG = void;
using __use_standard_header_cstdbool _LIBCPP_NODEBUG = __standard_header_cstdbool;

# elif _LIBCPP_STD_VER >= 17

using __standard_header_cstdbool _LIBCPP_DEPRECATED _LIBCPP_NODEBUG = void;
using __use_standard_header_cstdbool _LIBCPP_NODEBUG = __standard_header_cstdbool;

# if _LIBCPP_STD_VER >= 17 && !__building_module(std) && _LIBCPP_DIAGNOSE_DEPRECATED_HEADERS
# warning <cstdbool> is deprecated in C++17 and removed in C++20.
# endif

#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_CSTDBOOL
13 changes: 2 additions & 11 deletions libcxx/include/ctgmath
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Expand Up @@ -28,17 +28,8 @@
# pragma GCC system_header
# endif

# if _LIBCPP_STD_VER >= 20

using __standard_header_ctgmath
_LIBCPP_DEPRECATED_("removed in C++20. Include <cmath> and <complex> instead.") _LIBCPP_NODEBUG = void;
using __use_standard_header_ctgmath _LIBCPP_NODEBUG = __standard_header_ctgmath;

# elif _LIBCPP_STD_VER >= 17

using __standard_header_ctgmath _LIBCPP_DEPRECATED_("Include <cmath> and <complex> instead.") _LIBCPP_NODEBUG = void;
using __use_standard_header_ctgmath _LIBCPP_NODEBUG = __standard_header_ctgmath;

# if _LIBCPP_STD_VER >= 17 && !__building_module(std) && _LIBCPP_DIAGNOSE_DEPRECATED_HEADERS
# warning <ctgmath> is deprecated in C++17 and removed in C++20. Include <cmath> and <complex> instead.
# endif

#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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2 changes: 1 addition & 1 deletion libcxx/test/libcxx/transitive_includes.gen.py
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Expand Up @@ -89,7 +89,7 @@
// UNSUPPORTED: LIBCXX-FREEBSD-FIXME
// RUN: mkdir %t
// RUN: %{{cxx}} %s %{{flags}} %{{compile_flags}} --trace-includes -fshow-skipped-includes --preprocess > /dev/null 2> %t/trace-includes.txt
// RUN: %{{cxx}} %s %{{flags}} %{{compile_flags}} -Wno-deprecated --trace-includes -fshow-skipped-includes --preprocess > /dev/null 2> %t/trace-includes.txt
// RUN: %{{python}} %{{libcxx-dir}}/test/libcxx/transitive_includes/to_csv.py %t/trace-includes.txt > %t/actual_transitive_includes.csv
// RUN: cat %{{libcxx-dir}}/test/libcxx/transitive_includes/%{{cxx_std}}.csv | awk '/^{escaped_header} / {{ print }}' > %t/expected_transitive_includes.csv
// RUN: diff -w %t/expected_transitive_includes.csv %t/actual_transitive_includes.csv
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8 changes: 1 addition & 7 deletions libcxx/test/std/depr/depr.cpp.headers/ccomplex.verify.cpp
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Expand Up @@ -14,12 +14,6 @@
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: clang-modules-build

#include "test_macros.h"

#include <ccomplex>

#if TEST_STD_VER >= 20
// expected-warning@ccomplex:* {{'__standard_header_ccomplex' is deprecated: removed in C++20. Include <complex> instead.}}
#else
// expected-warning@ccomplex:* {{'__standard_header_ccomplex' is deprecated: Include <complex> instead.}}
#endif
// expected-warning@ccomplex:* {{<ccomplex> is deprecated in C++17 and removed in C++20. Include <complex> instead.}}
3 changes: 2 additions & 1 deletion libcxx/test/std/depr/depr.cpp.headers/ciso646.verify.cpp
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Expand Up @@ -15,4 +15,5 @@
// UNSUPPORTED: clang-modules-build

#include <ciso646>
// expected-warning@ciso646:* {{'__standard_header_ciso646' is deprecated: removed in C++20. Include <version> instead.}}

// expected-warning@ciso646:* {{<ciso646> is removed in C++20. Include <version> instead.}}
8 changes: 1 addition & 7 deletions libcxx/test/std/depr/depr.cpp.headers/cstdalign.verify.cpp
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Expand Up @@ -14,12 +14,6 @@
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: clang-modules-build

#include "test_macros.h"

#include <cstdalign>

#if TEST_STD_VER >= 20
// expected-warning@cstdalign:* {{'__standard_header_cstdalign' is deprecated: removed in C++20.}}
#else
// expected-warning@cstdalign:* {{'__standard_header_cstdalign' is deprecated}}
#endif
// expected-warning@cstdalign:* {{<cstdalign> is deprecated in C++17 and removed in C++20.}}
8 changes: 1 addition & 7 deletions libcxx/test/std/depr/depr.cpp.headers/cstdbool.verify.cpp
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Expand Up @@ -14,12 +14,6 @@
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: clang-modules-build

#include "test_macros.h"

#include <cstdbool>

#if TEST_STD_VER >= 20
// expected-warning@cstdbool:* {{'__standard_header_cstdbool' is deprecated: removed in C++20.}}
#else
// expected-warning@cstdbool:* {{'__standard_header_cstdbool' is deprecated}}
#endif
// expected-warning@cstdbool:* {{<cstdbool> is deprecated in C++17 and removed in C++20.}}
8 changes: 1 addition & 7 deletions libcxx/test/std/depr/depr.cpp.headers/ctgmath.verify.cpp
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Expand Up @@ -14,12 +14,6 @@
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: clang-modules-build

#include "test_macros.h"

#include <ctgmath>

#if TEST_STD_VER >= 20
// expected-warning@ctgmath:* {{'__standard_header_ctgmath' is deprecated: removed in C++20. Include <cmath> and <complex> instead.}}
#else
// expected-warning@ctgmath:* {{'__standard_header_ctgmath' is deprecated: Include <cmath> and <complex> instead.}}
#endif
// expected-warning@ctgmath:* {{<ctgmath> is deprecated in C++17 and removed in C++20. Include <cmath> and <complex> instead.}}
7 changes: 1 addition & 6 deletions libcxx/test/std/utilities/tuple/tuple.tuple/tuple.apply/make_from_tuple.verify.cpp
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Expand Up @@ -6,7 +6,7 @@
//
//===----------------------------------------------------------------------===//

// REQUIRES: std-at-least-c++23
// REQUIRES: std-at-least-c++26

// <tuple>

Expand All @@ -21,11 +21,6 @@
void test() {
// expected-error@*:* {{static assertion failed}}

// Turns to an error since C++26 (Disallow Binding a Returned Glvalue to a Temporary https://wg21.link/P2748R5).
#if TEST_STD_VER >= 26
// expected-error@tuple:* {{returning reference to local temporary object}}
#else
// expected-warning@tuple:* {{returning reference to local temporary object}}
#endif
std::ignore = std::make_from_tuple<const int&>(std::tuple<char>{});
}
2 changes: 1 addition & 1 deletion libcxx/utils/libcxx/test/format.py
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Expand Up @@ -99,7 +99,7 @@ def parseScript(test, preamble):
substitutions.append(
(
"%{verify}",
"%{cxx} %s %{flags} %{compile_flags} -fsyntax-only -Wno-error -Xclang -verify -Xclang -verify-ignore-unexpected=note -ferror-limit=0",
"%{cxx} %s %{flags} %{compile_flags} -U_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER -fsyntax-only -Wno-error -Xclang -verify -Xclang -verify-ignore-unexpected=note -ferror-limit=0",
)
)
substitutions.append(("%{run}", "%{exec} %t.exe"))
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