test: add miri testing

.github/actions/rustup/action.yml

@@ -21,6 +21,10 @@ inputs:
     default: false
     required: false
     type: boolean
+  miri:
+    default: false
+    required: false
+    type: boolean
   save-cache:
     default: false
     required: false
@@ -56,6 +60,11 @@ runs:
       shell: bash
       run: rustup set profile minimal
 
+    - name: Add Miri
+      shell: bash
+      if: ${{ inputs.miri == 'true' }}
+      run: rustup component add miri
+
     - name: Add Clippy
       shell: bash
       if: ${{ inputs.clippy == 'true' }}

.github/workflows/ci.yml

@@ -320,6 +320,35 @@ jobs:
         # reason for excluding https://github.com/napi-rs/napi-rs/issues/2200
         run: cargo test --workspace --exclude rspack_binding_options --exclude rspack_node -- --nocapture
 
+  rust_test_miri:
+    name: Rust test miri
+    needs: [get-runner-labels, rust_changes]
+    if: ${{ needs.rust_changes.outputs.changed == 'true' }}
+    runs-on: ${{ fromJSON(needs.get-runner-labels.outputs.LINUX_RUNNER_LABELS) }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Pnpm Cache # Required by some tests
+        uses: ./.github/actions/pnpm-cache
+
+      - name: Install Rust Toolchain
+        uses: ./.github/actions/rustup
+        with:
+          save-cache: ${{ github.ref_name == 'main' }}
+          shared-key: check
+          miri: true
+
+      # Compile test without debug info for reducing the CI cache size
+      - name: Change profile.test
+        shell: bash
+        run: |
+          echo '[profile.test]' >> Cargo.toml
+          echo 'debug = false' >> Cargo.toml
+
+      - name: Run test
+        # reason for excluding https://github.com/napi-rs/napi-rs/issues/2200
+        run: cargo miri test --workspace --exclude rspack_binding_options --exclude rspack_node -- --nocapture
+
   run_benchmark:
     name: Run benchmark
     runs-on: ubuntu-latest

crates/rspack_allocator/src/lib.rs

@@ -1,4 +1,3 @@
-use mimalloc::MiMalloc;
-
 #[global_allocator]
-static GLOBAL: MiMalloc = MiMalloc;
+#[cfg(not(miri))]
+static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;