[llvm] [libc++] Pin down the OS version of macOS runners (PR #225536)

[via llvm-commits]

llvmorg-github-actions[bot] wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libcxx

Author: Louis Dionne (ldionne)

<details>
<summary>Changes</summary>

Otherwise, we sometimes end up using runners that don't have Xcode 26.5 on them. Pinning this allows bumping the version explicitly when we are ready to.

---
Full diff: https://github.com/llvm/llvm-project/pull/225536.diff


1 Files Affected:

- (modified) .github/workflows/libcxx-pr-conformance-tests.yaml (+1-1) 


``````````diff
diff --git a/.github/workflows/libcxx-pr-conformance-tests.yaml b/.github/workflows/libcxx-pr-conformance-tests.yaml
index 21b4a65bd702a..6e333befa9b3c 100644
--- a/.github/workflows/libcxx-pr-conformance-tests.yaml
+++ b/.github/workflows/libcxx-pr-conformance-tests.yaml
@@ -230,7 +230,7 @@ jobs:
           xcode-version: '26.5'
         - config: apple-system-hardened
           xcode-version: '26.5'
-    runs-on: ["self-hosted", "macOS", "apple-runners"]
+    runs-on: ["self-hosted", "macOS", "apple-runners", "26.5"] # macOS 26.5, which has Xcode 26.5 too
     steps:
       - uses: actions/checkout at df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:

``````````

</details>


https://github.com/llvm/llvm-project/pull/225536