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Jul 15, 2025
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[libc++] Bump Xcode support #148651

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ff97622
[libc++] Bump Xcode support
ldionne Jul 14, 2025
a6031a4
Update compiler.h
ldionne Jul 14, 2025
591a3be
Remove AppleClang 15 check
ldionne Jul 14, 2025
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2 changes: 1 addition & 1 deletion libcxx/docs/index.rst
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Expand Up @@ -133,7 +133,7 @@ velocity, libc++ drops support for older compilers as newer ones are released.
Compiler Versions Restrictions Support policy
============ =================== ========================== =====================
Clang 19, 20, 21-git latest two stable releases per `LLVM's release page <https://releases.llvm.org>`_ and the development version
AppleClang 15 latest stable release per `Xcode's release page <https://developer.apple.com/documentation/xcode-release-notes>`_
AppleClang 16.4 latest stable release per `Xcode's release page <https://developer.apple.com/documentation/xcode-release-notes>`_
Open XL 17.1.3 (AIX) latest stable release per `Open XL's documentation page <https://www.ibm.com/docs/en/openxl-c-and-cpp-aix>`_
GCC 15 In C++11 or later only latest stable release per `GCC's release page <https://gcc.gnu.org/releases.html>`_
============ =================== ========================== =====================
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4 changes: 1 addition & 3 deletions libcxx/include/__algorithm/simd_utils.h
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Expand Up @@ -26,9 +26,7 @@ _LIBCPP_PUSH_MACROS
#include <__undef_macros>

// TODO: Find out how altivec changes things and allow vectorizations there too.
// TODO: Simplify this condition once we stop building with AppleClang 15 in the CI.
#if _LIBCPP_STD_VER >= 14 && defined(_LIBCPP_COMPILER_CLANG_BASED) && !defined(__ALTIVEC__) && \
!(defined(_LIBCPP_APPLE_CLANG_VER) && _LIBCPP_APPLE_CLANG_VER < 1600)
#if _LIBCPP_STD_VER >= 14 && defined(_LIBCPP_COMPILER_CLANG_BASED) && !defined(__ALTIVEC__)
# define _LIBCPP_HAS_ALGORITHM_VECTOR_UTILS 1
#else
# define _LIBCPP_HAS_ALGORITHM_VECTOR_UTILS 0
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2 changes: 1 addition & 1 deletion libcxx/include/__configuration/compiler.h
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Expand Up @@ -37,7 +37,7 @@
# warning "Libc++ only supports Clang 19 and later"
# endif
# elif defined(_LIBCPP_APPLE_CLANG_VER)
# if _LIBCPP_APPLE_CLANG_VER < 1500
# if _LIBCPP_APPLE_CLANG_VER < 1600
# warning "Libc++ only supports AppleClang 15 and later"
# endif
# elif defined(_LIBCPP_GCC_VER)
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3 changes: 0 additions & 3 deletions libcxx/test/libcxx/algorithms/vectorization.compile.pass.cpp
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Expand Up @@ -17,9 +17,6 @@
// We don't vectorize algorithms on AIX right now.
// XFAIL: target={{.+}}-aix{{.*}}

// We don't vectorize on AppleClang 15 since that apparently breaks std::mismatch
// XFAIL: apple-clang-15

// This test ensures that we enable the vectorization of algorithms on the expected
// platforms.

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1 change: 0 additions & 1 deletion libcxx/test/libcxx/memory/shared_ptr_array.pass.cpp
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Expand Up @@ -12,7 +12,6 @@
// These compiler versions and platforms don't enable sized deallocation by default.
// ADDITIONAL_COMPILE_FLAGS(clang-17): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(clang-18): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(apple-clang-15): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(apple-clang-16): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(target=x86_64-w64-windows-gnu): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(target=i686-w64-windows-gnu): -fsized-deallocation
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4 changes: 0 additions & 4 deletions libcxx/test/libcxx/vendor/apple/disable-availability.sh.cpp
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Expand Up @@ -8,10 +8,6 @@

// REQUIRES: stdlib=apple-libc++

// This test is dependent on the code generated by the compiler, and it doesn't
// work properly with older AppleClangs.
// UNSUPPORTED: apple-clang-15

// This test ensures that we retain a way to disable availability markup on Apple platforms
// in order to work around Clang bug https://github.com/llvm/llvm-project/issues/134151.
//
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3 changes: 0 additions & 3 deletions libcxx/test/std/experimental/simd/simd.class/simd_unary.pass.cpp
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Expand Up @@ -12,9 +12,6 @@
// Pass-by-value arguments with alignment greater than register width are not supported.
// XFAIL: target=powerpc{{.*}}-ibm-{{.*}} && clang-18

// This test crashes AppleClang 15 but not later versions.
// UNSUPPORTED: apple-clang-15

// FIXME: The following issue occurs on Windows to Armv7 Ubuntu Linux:
// Assertion failed: N->getValueType(0) == MVT::v1i1 && "Expected v1i1 type"
// XFAIL: target=armv7-unknown-linux-gnueabihf
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1 change: 0 additions & 1 deletion .../language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array.pass.cpp
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Expand Up @@ -12,7 +12,6 @@

// These compiler versions and platforms don't enable sized deallocation by default.
// ADDITIONAL_COMPILE_FLAGS(clang-18): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(apple-clang-15): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(apple-clang-16): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(apple-clang-17): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(target=x86_64-w64-windows-gnu): -fsized-deallocation
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1 change: 0 additions & 1 deletion ...t/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete.pass.cpp
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Expand Up @@ -12,7 +12,6 @@

// These compiler versions and platforms don't enable sized deallocation by default.
// ADDITIONAL_COMPILE_FLAGS(clang-18): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(apple-clang-15): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(apple-clang-16): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(apple-clang-17): -fsized-deallocation
// ADDITIONAL_COMPILE_FLAGS(target=x86_64-w64-windows-gnu): -fsized-deallocation
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2 changes: 1 addition & 1 deletion libcxx/test/std/numerics/c.math/signbit.pass.cpp
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Expand Up @@ -12,7 +12,7 @@
// UNSUPPORTED: windows

// These compilers don't support constexpr `__builtin_signbit` yet.
// UNSUPPORTED: clang-18, clang-19, apple-clang-15, apple-clang-16, apple-clang-17
// UNSUPPORTED: clang-18, clang-19, apple-clang-16, apple-clang-17

// GCC warns about signbit comparing `bool_v < 0`, which we're testing
// ADDITIONAL_COMPILE_FLAGS(gcc): -Wno-bool-compare
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2 changes: 1 addition & 1 deletion libcxx/test/std/numerics/numeric.ops/numeric.ops.sat/add_sat.pass.cpp
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Expand Up @@ -9,7 +9,7 @@
// REQUIRES: std-at-least-c++26

// The test uses "Placeholder variables with no name"
// UNSUPPORTED: apple-clang-15, apple-clang-16
// UNSUPPORTED: apple-clang-16

// <numeric>

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2 changes: 1 addition & 1 deletion libcxx/test/std/numerics/numeric.ops/numeric.ops.sat/div_sat.pass.cpp
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Expand Up @@ -9,7 +9,7 @@
// REQUIRES: std-at-least-c++26

// The test uses "Placeholder variables with no name"
// UNSUPPORTED: apple-clang-15, apple-clang-16
// UNSUPPORTED: apple-clang-16

// <numeric>

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2 changes: 1 addition & 1 deletion libcxx/test/std/numerics/numeric.ops/numeric.ops.sat/mul_sat.pass.cpp
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Expand Up @@ -9,7 +9,7 @@
// REQUIRES: std-at-least-c++26

// The test uses "Placeholder variables with no name"
// UNSUPPORTED: apple-clang-15, apple-clang-16
// UNSUPPORTED: apple-clang-16

// <numeric>

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2 changes: 1 addition & 1 deletion libcxx/test/std/numerics/numeric.ops/numeric.ops.sat/saturate_cast.pass.cpp
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Expand Up @@ -9,7 +9,7 @@
// REQUIRES: std-at-least-c++26

// The test uses "Placeholder variables with no name"
// UNSUPPORTED: apple-clang-15, apple-clang-16
// UNSUPPORTED: apple-clang-16

// <numeric>

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2 changes: 1 addition & 1 deletion libcxx/test/std/numerics/numeric.ops/numeric.ops.sat/sub_sat.pass.cpp
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Expand Up @@ -9,7 +9,7 @@
// REQUIRES: std-at-least-c++26

// The test uses "Placeholder variables with no name"
// UNSUPPORTED: apple-clang-15, apple-clang-16
// UNSUPPORTED: apple-clang-16

// <numeric>

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3 changes: 0 additions & 3 deletions libcxx/test/std/ranges/range.utility/range.utility.conv/to_deduction.pass.cpp
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Expand Up @@ -7,9 +7,6 @@
//===----------------------------------------------------------------------===//

// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
// There is a bug in older versions of Clang that causes trouble with constraints in classes like
// `ContainerWithDirectCtr`.
// XFAIL: apple-clang-15

// template<template<class...> class C, input_range R, class... Args>
// constexpr auto to(R&& r, Args&&... args); // Since C++23
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2 changes: 1 addition & 1 deletion libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_implicit_lifetime.pass.cpp
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Expand Up @@ -9,7 +9,7 @@
// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20

// These compilers don't support __builtin_is_implicit_lifetime yet.
// UNSUPPORTED: clang-18, clang-19, gcc-14, gcc-15, apple-clang-15, apple-clang-16, apple-clang-17
// UNSUPPORTED: clang-18, clang-19, gcc-14, gcc-15, apple-clang-16, apple-clang-17
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Suggested change
// UNSUPPORTED: clang-18, clang-19, gcc-14, gcc-15, apple-clang-16, apple-clang-17
// UNSUPPORTED: clang-19, gcc-14, gcc-15, apple-clang-16, apple-clang-17

Mentions of clang-18 can be removed too.

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I agree, but I'd like to tackle that separately since AppleClang is different from Clang.

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See #148862


// <type_traits>

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2 changes: 1 addition & 1 deletion libcxx/test/std/utilities/meta/meta.unary/meta.unary.prop/is_implicit_lifetime.verify.cpp
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Expand Up @@ -9,7 +9,7 @@
// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20

// These compilers don't support __builtin_is_implicit_lifetime yet.
// UNSUPPORTED: clang-18, clang-19, gcc-14, apple-clang-15, apple-clang-16, apple-clang-17
// UNSUPPORTED: clang-18, clang-19, gcc-14, apple-clang-16, apple-clang-17

// <type_traits>

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2 changes: 1 addition & 1 deletion ...td/utilities/meta/meta.unary/meta.unary.prop/reference_constructs_from_temporary.pass.cpp
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Expand Up @@ -9,7 +9,7 @@
// REQUIRES: std-at-least-c++23

// These compilers don't support std::reference_converts_from_temporary yet.
// UNSUPPORTED: android, apple-clang-15, apple-clang-16, clang-19.1
// UNSUPPORTED: android, apple-clang-16, clang-19.1

// <type_traits>

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2 changes: 1 addition & 1 deletion .../std/utilities/meta/meta.unary/meta.unary.prop/reference_converts_from_temporary.pass.cpp
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Expand Up @@ -9,7 +9,7 @@
// REQUIRES: std-at-least-c++23

// These compilers don't support std::reference_converts_from_temporary yet.
// UNSUPPORTED: android, apple-clang-15, apple-clang-16, clang-18, clang-19.1
// UNSUPPORTED: android, apple-clang-16, clang-18, clang-19.1

// <type_traits>

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