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[3.14] gh-152785: Upgrade LLVM to LLVM 21 in GitHub Action jobs (GH-152781) #152969

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[3.14] gh-152785: Upgrade LLVM to LLVM 21 in GitHub Action jobs (GH-152781) #152969

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gh-152785: Upgrade LLVM to LLVM 21 in GitHub Action jobs (GH-152781) 
Upgrade LLVM to LLVM 21 in GitHub Action jobs:

* Reusable Sanitizer
* Reusable Ubuntu ("Install Clang and BOLT")
(cherry picked from commit f5b3eef)

Co-authored-by: Victor Stinner <vstinner@python.org>
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@vstinner @miss-islington
vstinner authored and miss-islington committed Jul 3, 2026
commit e9bca4a922d551cdd5257edd08079bee29a84c91
10 changes: 5 additions & 5 deletions .github/workflows/reusable-san.yml
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Expand Up @@ -40,11 +40,11 @@ jobs:
# Install clang
wget https://apt.llvm.org/llvm.sh
chmod +x llvm.sh
sudo ./llvm.sh 20
sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-20 100
sudo update-alternatives --set clang /usr/bin/clang-20
sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-20 100
sudo update-alternatives --set clang++ /usr/bin/clang++-20
sudo ./llvm.sh 21
sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-21 100
sudo update-alternatives --set clang /usr/bin/clang-21
sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-21 100
sudo update-alternatives --set clang++ /usr/bin/clang++-21

if [ "${SANITIZER}" = "TSan" ]; then
# Reduce ASLR to avoid TSan crashing
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6 changes: 3 additions & 3 deletions .github/workflows/reusable-ubuntu.yml
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Expand Up @@ -44,9 +44,9 @@ jobs:
- name: Install Clang and BOLT
if: ${{ fromJSON(inputs.bolt-optimizations) }}
run: |
sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh 19
sudo apt-get install --no-install-recommends bolt-19
echo PATH="$(llvm-config-19 --bindir):$PATH" >> $GITHUB_ENV
sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh 21
sudo apt-get install --no-install-recommends bolt-21
echo PATH="$(llvm-config-21 --bindir):$PATH" >> $GITHUB_ENV
- name: Configure OpenSSL env vars
run: |
echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> "$GITHUB_ENV"
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