Add fuzz to CI (#690)

* Add fuzz to CI

* Change compiler to clang++

* Fix flag name

* Remove fuzzing from a requirement.

* Update to checkout v4

.github/workflows/main.yml

@@ -77,7 +77,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }} ${{ matrix.build-type }} ${{ matrix.variant }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install build dependencies
       run: "sudo apt install ninja-build"
 
@@ -118,7 +118,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }} ${{ matrix.build-type }} ${{ matrix.extra-cmake-flags }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install build dependencies
             # The homebrew packages are broken at the moment and error out
             # after trying to install Python as a dependency of ninja because
@@ -167,7 +167,7 @@ jobs:
     runs-on: ubuntu-22.04
     name: FreeBSD-${{ matrix.os.version}} ${{ matrix.build-type }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: vmactions/freebsd-vm@v1
       with:
         release: ${{ matrix.os.version}}
@@ -198,7 +198,7 @@ jobs:
     runs-on: ubuntu-22.04
     name: NetBSD-${{ matrix.os.version}} ${{ matrix.build-type }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: vmactions/netbsd-vm@v1
       with:
         release: ${{ matrix.os.version}}
@@ -231,7 +231,7 @@ jobs:
   #   runs-on: macos-latest
   #   name: OpenBSD-${{ matrix.os.version}} ${{ matrix.build-type }}
   #   steps:
-  #   - uses: actions/checkout@v3
+  #   - uses: actions/checkout@v4
   #   - uses: vmactions/openbsd-vm@v0
   #     with:
   #       release: ${{ matrix.os.version}}
@@ -268,7 +268,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }} ${{ matrix.build-type }} ${{ matrix.variant }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install build dependencies
       run: ${{ matrix.dependencies }}
 
@@ -323,7 +323,7 @@ jobs:
     runs-on: ${{matrix.arch.host-os}}
     name: ${{matrix.build-type}} cross-build for ${{ matrix.arch.triple }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: "Install cross-compile toolchain and QEMU (ubuntu-20.04)"
       # Install the dependencies and clang 13.  Earlier versions of clang don't
       # find the multilib things for this week's Ubuntu filesystem layout.
@@ -443,7 +443,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }} ${{ matrix.arch }} ${{ matrix.build-type }} ${{ matrix.toolchain }} ${{ matrix.variant }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Configure CMake
       run: |
         cmake -B ${{github.workspace}}/build -A ${{ matrix.arch }} ${{ matrix.toolchain }} ${{ matrix.extra-cmake-flags }} -DSNMALLOC_CI_BUILD=On -DSNMALLOC_RUST_SUPPORT=On
@@ -463,7 +463,7 @@ jobs:
     runs-on: ubuntu-22.04
     # We don't need to do the build for this job, but we need to configure it to get the clang-format target
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install clang-tidy and clang-format
       run: |
         sudo apt update
@@ -485,8 +485,20 @@ jobs:
           exit 1
         fi
 
+  fuzzing:
+    runs-on: ubuntu-24.04
+    steps:
+    - uses: actions/checkout@v4
+    - name: Configure CMake
+      run: cmake -B ${{github.workspace}}/build -DSNMALLOC_ENABLE_FUZZING=ON -DFUZZTEST_FUZZING_MODE=ON -DCMAKE_CXX_COMPILER=clang++
+    - name: Build
+      run: cmake --build ${{github.workspace}}/build --target snmalloc-fuzzer
+    - name: Test
+      run: ${{github.workspace}}/build/fuzzing/snmalloc-fuzzer
+
   all-checks:
     # Currently FreeBSD and NetBSD CI are not working, so we do not require them to pass.
+    # Add fuzzing back when the memove issue is fixed.
     needs: [ubuntu, macos, freebsd, netbsd, sanitizer, qemu-crossbuild, windows, format]
     runs-on: ubuntu-latest
     steps: