From 34300d7ab0707e1f39b3eddb7b56f4d0deacc4d9 Mon Sep 17 00:00:00 2001
From: Johan Larsson <johan@jolars.co>
Date: Sat, 10 Oct 2026 20:23:03 +0200
Subject: [PATCH] ci: use LLVM instrumentation for coverage

Fixes #484
---
 .github/workflows/coverage.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index d96f21c8..9fd5c3f4 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -23,10 +23,12 @@ jobs:
           restore-keys: ${{ runner.os }}-coverage-cargo
       - name: Install Rust toolchain
         uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: llvm-tools-preview
       - name: Install cargo-tarpaulin
         run: cargo install --locked cargo-tarpaulin
       - name: Run cargo-tarpaulin
-        run: cargo tarpaulin --all-features --run-types Tests --run-types Doctests --out Lcov --fail-under 44 -- --test-threads 1
+        run: cargo tarpaulin --engine llvm --all-features --run-types Tests --run-types Doctests --out Lcov --fail-under 44 -- --test-threads 1
       - name: Upload to codecov.io
         if: always()
         uses: codecov/codecov-action@v4