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gh-121946: Use clang-20 for TSan build #148570

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Merged
hugovk merged 1 commit into from
Apr 19, 2026
Merged

gh-121946: Use clang-20 for TSan build #148570

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12 changes: 5 additions & 7 deletions 12 .github/workflows/reusable-san.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -40,17 +40,15 @@ 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

if [ "${SANITIZER}" = "TSan" ]; then
sudo ./llvm.sh 17 # gh-121946: llvm-18 package is temporarily broken
sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-17 100
sudo update-alternatives --set clang /usr/bin/clang-17
sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-17 100
sudo update-alternatives --set clang++ /usr/bin/clang++-17
# Reduce ASLR to avoid TSan crashing
sudo sysctl -w vm.mmap_rnd_bits=28
else
sudo ./llvm.sh 20
fi

- name: Sanitizer option setup
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