[libc++] Upgrade Xcode to 26.0 #160097

philnik777 · 2025-09-22T13:19:13Z

No description provided.

llvmbot · 2025-10-01T15:06:39Z

@llvm/pr-subscribers-github-workflow

Author: Nikolas Klauser (philnik777)

Changes

Full diff: https://github.com/llvm/llvm-project/pull/160097.diff

3 Files Affected:

(modified) .github/workflows/libcxx-build-and-test.yaml (+1-1)
(modified) libcxx/docs/index.rst (+1-1)
(modified) libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm (+2-1)

diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index 2e6ff7f91b6fc..ca6275dcea2f1 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -215,7 +215,7 @@ jobs:
       - uses: maxim-lobanov/setup-xcode@60606e260d2fc5762a71e64e74b2174e8ea3c8bd # v1.6.0
         with:
           # https://github.com/actions/runner-images/blob/main/images/macos/macos-15-Readme.md
-          xcode-version: '16.3'
+          xcode-version: '26.0'
       - uses: seanmiddleditch/gha-setup-ninja@3b1f8f94a2f8254bd26914c4ab9474d4f0015f67 # v6
       - name: Build and test
         run: |
diff --git a/libcxx/docs/index.rst b/libcxx/docs/index.rst
index a44c3161534b3..4d5064bfd7f3b 100644
--- a/libcxx/docs/index.rst
+++ b/libcxx/docs/index.rst
@@ -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   16.4                                           latest stable release per `Xcode's release page <https://developer.apple.com/documentation/xcode-release-notes>`_
+AppleClang   26.0                                           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>`_
 ============ =================== ========================== =====================
diff --git a/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm b/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm
index 05a6698ea1a59..de383051543be 100644
--- a/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm
+++ b/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm
@@ -17,7 +17,8 @@
 // out-of-the-box.
 // REQUIRES: has-fobjc-arc && darwin
 
-// ADDITIONAL_COMPILE_FLAGS: -fobjc-arc
+// FIXME: including <Foundation/Foundation.h> seems to be currently broken with modules enabled
+// ADDITIONAL_COMPILE_FLAGS: -fobjc-arc -fno-modules
 
 #include <cassert>
 #include <exception>

llvmbot · 2025-10-01T15:06:40Z

@llvm/pr-subscribers-libcxx

Author: Nikolas Klauser (philnik777)

Changes

Full diff: https://github.com/llvm/llvm-project/pull/160097.diff

3 Files Affected:

(modified) .github/workflows/libcxx-build-and-test.yaml (+1-1)
(modified) libcxx/docs/index.rst (+1-1)
(modified) libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm (+2-1)

diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index 2e6ff7f91b6fc..ca6275dcea2f1 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -215,7 +215,7 @@ jobs:
       - uses: maxim-lobanov/setup-xcode@60606e260d2fc5762a71e64e74b2174e8ea3c8bd # v1.6.0
         with:
           # https://github.com/actions/runner-images/blob/main/images/macos/macos-15-Readme.md
-          xcode-version: '16.3'
+          xcode-version: '26.0'
       - uses: seanmiddleditch/gha-setup-ninja@3b1f8f94a2f8254bd26914c4ab9474d4f0015f67 # v6
       - name: Build and test
         run: |
diff --git a/libcxx/docs/index.rst b/libcxx/docs/index.rst
index a44c3161534b3..4d5064bfd7f3b 100644
--- a/libcxx/docs/index.rst
+++ b/libcxx/docs/index.rst
@@ -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   16.4                                           latest stable release per `Xcode's release page <https://developer.apple.com/documentation/xcode-release-notes>`_
+AppleClang   26.0                                           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>`_
 ============ =================== ========================== =====================
diff --git a/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm b/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm
index 05a6698ea1a59..de383051543be 100644
--- a/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm
+++ b/libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm
@@ -17,7 +17,8 @@
 // out-of-the-box.
 // REQUIRES: has-fobjc-arc && darwin
 
-// ADDITIONAL_COMPILE_FLAGS: -fobjc-arc
+// FIXME: including <Foundation/Foundation.h> seems to be currently broken with modules enabled
+// ADDITIONAL_COMPILE_FLAGS: -fobjc-arc -fno-modules
 
 #include <cassert>
 #include <exception>

ldionne · 2025-10-01T15:07:50Z

libcxx/test/std/language.support/support.exception/propagation/make_exception_ptr.objc.pass.mm


-// ADDITIONAL_COMPILE_FLAGS: -fobjc-arc
+// FIXME: including <Foundation/Foundation.h> seems to be currently broken with modules enabled
+// ADDITIONAL_COMPILE_FLAGS: -fobjc-arc -fno-modules


CC @ian-twilightcoder

@philnik777 Can you undo this change temporarily so we can see the actual failure? I'm not able to reproduce this with

echo "#import <Foundation/Foundation.h>" | clang++ -x objective-c++ - -fmodules -fobjc-arc -std=c++26

Heh yeah I assure you the Foundation module works fine, it's rather load bearing. There would be very loud alarms in every Apple building around the world if that wasn't working. 😂

Hate to break it to you, but it reproduces with echo "#import <Foundation/Foundation.h>" | clang++ -x objective-c++ - -fmodules -fcxx-modules -std=c++26:

While building module 'Foundation' imported from <stdin>:1: While building module 'CoreGraphics' imported from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSGeometry.h:14: In file included from <module-includes>:1: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CoreGraphics.h:11: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGBitmapContext.h:9: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGContext.h:20: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/CoreGraphics.framework/Headers/CGImage.h:96:18: error: invalid bitwise operation between different enumeration types ('CGImageAlphaInfo' and 'CGImageComponentInfo') 96 | return alpha | component | byteOrder | pixelFormat; | ~~~~~ ^ ~~~~~~~~~ While building module 'Foundation' imported from <stdin>:1: In file included from <module-includes>:1: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h:52: In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSKeyedArchiver.h:9: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSGeometry.h:14:9: fatal error: could not build module 'CoreGraphics' 14 | #import <CoreGraphics/CGBase.h> | ~~~~~~~^ <stdin>:1:9: fatal error: could not build module 'Foundation' 1 | #import <Foundation/Foundation.h> | ~~~~~~~^ 3 errors generated.

philnik777 force-pushed the upgrade_macos branch from 24996b6 to 0502b81 Compare September 28, 2025 07:33

philnik777 changed the title ~~[libc++] Upgrade macOS and Xcode to 26.0~~ [libc++] Upgrade Xcode to 26.0 Sep 28, 2025

[libc++] Upgrade macOS and Xcode to 26.0

afe5ddf

philnik777 force-pushed the upgrade_macos branch from 0502b81 to afe5ddf Compare September 29, 2025 09:08

ldionne marked this pull request as ready for review October 1, 2025 15:05

ldionne requested a review from a team as a code owner October 1, 2025 15:05

llvmbot added libc++ libc++ C++ Standard Library. Not GNU libstdc++. Not libc++abi. github:workflow labels Oct 1, 2025

ldionne approved these changes Oct 1, 2025

View reviewed changes

philnik777 merged commit 0b0dcf8 into llvm:main Oct 2, 2025
70 of 72 checks passed

philnik777 deleted the upgrade_macos branch October 2, 2025 07:32

mahesh-attarde pushed a commit to mahesh-attarde/llvm-project that referenced this pull request Oct 3, 2025

[libc++] Upgrade Xcode to 26.0 (llvm#160097)

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[libc++] Upgrade Xcode to 26.0 #160097

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