Skip f32.wast etc. on linux due to Alpine-x86_64 issue + add CI testing (#8558)

This was noticed during creating the 129 release:
#8557 (comment)

Add an alpine build to CI for x86_64, mirroring our release builds, so
we do not lack coverage (which led to the issue only showing on release, not
CI).

Also make the alpine CI build identical to alpine release (copied from
`create_release`).

Author: kripken

.github/workflows/ci.yml

@@ -219,19 +219,30 @@ jobs:
     - name: test
       run: python check.py --binaryen-bin=out/bin
 
-  # Build with gcc 6.3 and run tests on Alpine Linux (inside chroot).
+  # Run tests on Alpine Linux, which we use to make our release builds.
   # Note: Alpine uses musl libc.
-  # Keep in sync with build_release.yml
+  # Keep in sync with build_release.yml. The only difference is that here we
+  # do not have the "archive" and "upload tarball" jobs.
   build-alpine:
     name: alpine
-    runs-on: ubuntu-24.04-arm
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, ubuntu-24.04-arm]
     steps:
+    - uses: actions/setup-python@v5
+      with:
+        python-version: '3.x'
     - uses: actions/checkout@v4
       with:
         submodules: true
+
     - name: start docker
       run: |
-        docker run -w /src -dit --platform=linux/arm64 --name alpine -v $PWD:/src node:lts-alpine
+        if [[ "${{ matrix.docker_platform }}" == "ubuntu-24.04-arm" ]]; then
+          platform="--platform=linux/arm64"
+        fi
+        docker run -w /src -dit $platform --name alpine -v $PWD:/src node:lts-alpine
         echo 'docker exec alpine "$@";' > ./alpine.sh
         chmod +x ./alpine.sh
 
@@ -249,7 +260,7 @@ jobs:
 
     - name: cmake
       run: |
-        ./alpine.sh cmake . -G Ninja -DCMAKE_INSTALL_PREFIX=out/install -DCMAKE_CXX_FLAGS="-static" -DCMAKE_C_FLAGS="-static" -DCMAKE_BUILD_TYPE=Release -DBUILD_STATIC_LIB=ON -DBUILD_MIMALLOC=ON -DCMAKE_INSTALL_PREFIX=install
+        ./alpine.sh cmake . -G Ninja -DCMAKE_CXX_FLAGS="-static" -DCMAKE_C_FLAGS="-static" -DCMAKE_BUILD_TYPE=Release -DBUILD_STATIC_LIB=ON -DBUILD_MIMALLOC=ON -DCMAKE_INSTALL_PREFIX=install
 
     - name: build
       run: |

scripts/test/shared.py

@@ -443,6 +443,15 @@ def get_tests(test_dir, extensions=[], recursive=False):
     'token.wast',                 # Lexer should require spaces between strings and non-paren tokens
 ]
 
+if get_platform() == 'linux':
+    SPEC_TESTSUITE_TESTS_TO_SKIP += [
+        # Errors on Linux x86_64 with musl, https://github.com/WebAssembly/binaryen/pull/8557
+        'f32.wast',
+        'f64.wast',
+        'simd_f32x4_rounding.wast',
+        'simd_f64x2_rounding.wast',
+    ]
+
 
 def _can_run_spec_test(test):
     test = Path(test)

scripts/test/wasm2js.py

@@ -42,10 +42,15 @@ def check_for_stale_files():
     all_tests = basic_tests + spec_tests + wasm2js_tests
     all_tests = [os.path.basename(os.path.splitext(t)[0]) for t in all_tests]
 
+    assert_test_prefixes = [t.split('.')[0] for t in assert_tests]
+    skipped_test_prefixes = [t.split('.')[0] for t in shared.SPEC_TESTSUITE_TESTS_TO_SKIP]
+
     all_files = os.listdir(shared.get_test_dir('wasm2js'))
     for f in all_files:
         prefix = f.split('.')[0]
-        if prefix in [t.split('.')[0] for t in assert_tests]:
+        if prefix in assert_test_prefixes:
+            continue
+        if prefix in skipped_test_prefixes:
             continue
         if prefix not in all_tests:
             shared.fail_with_error(f'orphan test output: {f}')