fix: sigsev in valgrind due to incorrect optimization

.github/workflows/ci.yml

@@ -2,35 +2,44 @@ name: CI
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request:
   workflow_dispatch:
 
 jobs:
   lint:
-   runs-on: ubuntu-latest
-   steps:
-     - uses: actions/checkout@v4
-     - uses: mlugg/setup-zig@v1
-     - uses: pre-commit/action@v3.0.1
-       with:
-         extra_args: --all-files
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: mlugg/setup-zig@v1
+      - uses: pre-commit/action@v3.0.1
+        with:
+          extra_args: --all-files
 
   tests:
-   runs-on: ubuntu-latest
-   steps:
-     - uses: actions/checkout@v4
-     - uses: mlugg/setup-zig@v1
-     - name: Build
-       run: zig build test --summary all
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: mlugg/setup-zig@v1
+      - uses: extractions/setup-just@v3
+      - name: Run tests
+        run: zig build test --summary all
+
+      - name: Run valgrind tests
+        run: |
+          sudo apt-get install -y valgrind
+          just test-valgrind
 
   build:
-   runs-on: ubuntu-latest
-   steps:
-     - uses: actions/checkout@v4
-     - uses: mlugg/setup-zig@v1
-     - name: Build
-       run: zig build
+    strategy:
+      matrix:
+        os: [ubuntu-latest, ubuntu-24.04-arm]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: mlugg/setup-zig@v1
+      - name: Build
+        run: zig build
 
   check:
     runs-on: ubuntu-latest

Justfile

@@ -13,10 +13,15 @@ release: build
     cp -r ./zig-out/lib dist/
     echo "size of core.c: $(cat dist/core.c | wc -l)"
 
+    # Append valgrind_wrapper.c to core.c
+    cat src/helpers/valgrind_wrapper.c >> dist/core.c
+
 test:
     zig build test --summary all
 
-test-c:
+test-valgrind:
+    rm /tmp/runner*.fifo || true
+
     clang -O3 src/tests/main.c dist/core.c -I includes/ -o clang-main && ./clang-main
     valgrind ./clang-main
 

build.zig

@@ -20,6 +20,8 @@ pub fn build(b: *std.Build) void {
     // Tests
     //
     const test_main = b.addTest(.{ .root_source_file = b.path("src/root.zig"), .optimize = optimize, .link_libc = true, .test_runner = .{ .path = b.path("src/tests/runner.zig"), .mode = .simple } });
+    test_main.addCSourceFile(.{ .file = b.path("src/helpers/valgrind_wrapper.c") });
+    test_main.addIncludePath(b.path("includes"));
     test_main.linkLibC();
     const run_test_main = b.addRunArtifact(test_main);
     b.step("test", "test utility functions").dependOn(&run_test_main.step);