Update clang in macOS build

This resolves a crash in release builds. This may be dropped again in the
future once the bugfix lands.

Co-authored by Alexandre Daubois <alex.daubois@gmail.com>
Co-authored by Arnaud Le Blanc <arnaud.lb@gmail.com>
Co-authored by Jakub Zelenka <bukka@php.net>

Closes GH-20669

Author: iluuu1994

.github/actions/macos-update-clang/action.yml

@@ -0,0 +1,17 @@
+name: Update clang
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: |
+        softwareupdate -l
+        label=$((softwareupdate -l 2>/dev/null | grep 'Label:' | grep -o 'Command Line Tools for Xcode.*' | head -1) || echo '')
+        if [ -n "$label" ]; then
+          softwareupdate -i "$label"
+          xcode_path=$(ls -1 '/Applications' | grep 'Xcode_.*\.app' | head -1)
+          sudo xcode-select -s "/Applications/$xcode_path"
+        else
+          echo "Not found."
+        fi
+        which clang
+        clang -v

.github/workflows/nightly.yml

@@ -367,6 +367,8 @@ jobs:
         uses: actions/checkout@v5
         with:
           ref: ${{ inputs.branch }}
+      - name: Update clang
+        uses: ./.github/actions/macos-update-clang
       - name: brew
         uses: ./.github/actions/brew
       - name: ./configure

.github/workflows/push.yml

@@ -117,6 +117,8 @@ jobs:
     steps:
       - name: git checkout
         uses: actions/checkout@v5
+      - name: Update clang
+        uses: ./.github/actions/macos-update-clang
       - name: brew
         uses: ./.github/actions/brew
       - name: ccache