Alpine/Musl CI

.github/actions/apk/action.yml

@@ -0,0 +1,61 @@
+name: apk
+runs:
+  using: composite
+  steps:
+    - shell: sh
+      run: |
+        set -x
+
+        apk update -q
+        apk add \
+            util-linux \
+            bash \
+            sudo \
+            build-base \
+            autoconf \
+            unzip \
+            tar \
+            bison \
+            re2c \
+            pkgconf \
+            mysql-client \
+            aspell-dev \
+            hunspell-dev \
+            hunspell-en \
+            bzip2-dev \
+            curl-dev \
+            freetype-dev \
+            gettext-dev \
+            gnu-libiconv-dev \
+            gmp-dev \
+            icu-dev \
+            icu-data-full \
+            jpeg-dev \
+            libffi-dev \
+            libpng-dev \
+            libsodium-dev \
+            libwebp-dev \
+            libxml2-dev \
+            libxpm-dev \
+            libxslt-dev \
+            libzip-dev \
+            oniguruma-dev \
+            openssl-dev \
+            readline-dev \
+            sqlite-dev \
+            tidyhtml-dev \
+            krb5-dev \
+            gdbm-dev \
+            lmdb-dev \
+            argon2-dev \
+            enchant2-dev \
+            enchant2-hunspell \
+            freetds-dev \
+            imap-dev \
+            net-snmp-dev \
+            openldap-dev \
+            unixodbc-dev \
+            postgresql14-dev \
+            tzdata \
+            musl-locales \
+            musl-locales-lang

.github/actions/configure-alpine/action.yml

@@ -0,0 +1,85 @@
+name: ./configure
+inputs:
+  configurationParameters:
+    default: ''
+    required: false
+  configureArtifacts:
+    default: null
+    required: false
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: |
+        set -x
+        ./buildconf --force
+        ./configure \
+          --enable-option-checking=fatal \
+          --prefix=/usr \
+          --enable-phpdbg \
+          --enable-fpm \
+          --with-pdo-mysql=mysqlnd \
+          --with-mysqli=mysqlnd \
+          ${{ inputs.skipSlow == 'false' && '--with-pgsql' || '' }} \
+          ${{ inputs.skipSlow == 'false' && '--with-pdo-pgsql' || '' }} \
+          ${{ inputs.skipSlow == 'false' && '--with-pdo-sqlite' || '' }} \
+          --enable-intl \
+          --without-pear \
+          --enable-gd \
+          --with-jpeg \
+          --with-webp \
+          --with-freetype \
+          --with-xpm \
+          --enable-exif \
+          --with-zip \
+          --with-zlib \
+          --enable-soap \
+          --enable-xmlreader \
+          --with-xsl \
+          ${{ inputs.skipSlow == 'false' && '--with-tidy' || '' }} \
+          --enable-sysvsem \
+          --enable-sysvshm \
+          --enable-shmop \
+          --enable-pcntl \
+          --with-readline \
+          --enable-mbstring \
+          --with-iconv=/usr \
+          --with-curl \
+          --with-gettext \
+          --enable-sockets \
+          --with-bz2 \
+          --with-openssl \
+          --with-gmp \
+          --enable-bcmath \
+          --enable-calendar \
+          --enable-ftp \
+          ${{ inputs.skipSlow == 'false' && '--with-enchant=/usr' || '' }} \
+          --enable-sysvmsg \
+          --with-ffi \
+          --enable-zend-test \
+          ${{ inputs.skipSlow == 'false' && '--enable-dl-test=shared' || '' }} \
+          ${{ inputs.skipSlow == 'false' && '--with-ldap' || '' }} \
+          ${{ inputs.skipSlow == 'false' && '--with-ldap-sasl' || '' }} \
+          --with-password-argon2 \
+          --with-mhash \
+          --with-sodium \
+          --enable-dba \
+          --with-cdb \
+          --enable-flatfile \
+          --enable-inifile \
+          --with-lmdb \
+          --with-gdbm \
+          ${{ inputs.skipSlow == 'false' && '--with-snmp' || '' }} \
+          ${{ inputs.skipSlow == 'false' && '--with-unixODBC' || '' }} \
+          ${{ inputs.skipSlow == 'false' && '--with-pdo-odbc=unixODBC,/usr' || '' }} \
+          --with-config-file-path=/etc \
+          --with-config-file-scan-dir=/etc/php.d \
+          ${{ inputs.skipSlow == 'false' && '--with-pdo-dblib' || '' }} \
+          --enable-werror \
+          ${{ inputs.configurationParameters }}
+    - uses: actions/upload-artifact@v4
+      if: always() && inputs.configureArtifacts != null
+      with:
+        name: ${{ github.job }}_CONFIGURE_${{ inputs.configureArtifacts }}
+        path: ${{ github.workspace }}/config.log
+        retention-days: 5

.github/actions/install-alpine/action.yml

@@ -0,0 +1,10 @@
+name: Install
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: |
+        set -x
+        sudo make install
+        sudo mkdir -p /etc/php.d
+        sudo chmod 777 /etc/php.d

.github/actions/test-alpine/action.yml

@@ -0,0 +1,37 @@
+name: Test
+inputs:
+  testArtifacts:
+    default: null
+    required: false
+  runTestsParameters:
+    default: ''
+    required: false
+  jitType:
+    default: 'disable'
+    required: false
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: |
+        set -x
+        export SKIP_IO_CAPTURE_TESTS=1
+        export TEST_PHP_JUNIT=junit.out.xml
+        export STACK_LIMIT_DEFAULTS_CHECK=1
+        sapi/cli/php run-tests.php -P -q ${{ inputs.runTestsParameters }} \
+          -d opcache.jit=${{ inputs.jitType }} \
+          -d opcache.protect_memory=1 \
+          -d opcache.jit_buffer_size=64M \
+          -j$(($(nproc) - 1)) \
+          -g FAIL,BORK,LEAK,XLEAK \
+          --no-progress \
+          --offline \
+          --show-diff \
+          --show-slow 1000 \
+          --set-timeout 120
+    - uses: actions/upload-artifact@v4
+      if: always() && inputs.testArtifacts != null
+      with:
+        name: ${{ github.job }}_${{ inputs.testArtifacts }}
+        path: ${{ github.workspace }}/junit.out.xml
+        retention-days: 5

.github/workflows/push.yml

@@ -191,6 +191,77 @@ jobs:
           runTestsParameters: >-
             -d zend_extension=opcache.so
             -d opcache.enable_cli=1
+  ALPINE:
+    if: github.repository_owner == 'php' || github.event_name == 'pull_request'
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - debug: false
+            zts: false
+            asan: false
+          - debug: true
+            zts: true
+            asan: true
+    name: "ALPINE_${{ matrix.debug && 'DEBUG' || 'RELEASE' }}_${{ matrix.zts && 'ZTS' || 'NTS' }}${{ matrix.asan && '_ASAN' || '' }}"
+    runs-on: ubuntu-22.04
+    container:
+      image: 'alpine:3.19.1'
+    steps:
+      - name: git checkout
+        uses: actions/checkout@v4
+      - name: apk
+        uses: ./.github/actions/apk
+      - name: LLVM 17 (ASAN-only)
+        if: ${{ matrix.asan }}
+        # libclang_rt.asan-x86_64.a is provided by compiler-rt, and only for clang17
+        run: |
+          apk add clang17 compiler-rt
+      - name: System info
+        run: |
+          echo "::group::Show host CPU info"
+          lscpu
+          echo "::endgroup::"
+          echo "::group::Show installed package versions"
+          apk list
+          echo "::endgroup::"
+      - name: ccache
+        uses: hendrikmuhs/[email protected]
+        with:
+          # This duplicates the "job.name" expression above because
+          # GitHub has no way to query the job name (github.job is the
+          # job id, not the job name)
+          key: "ALPINE_${{ matrix.debug && 'DEBUG' || 'RELEASE' }}_${{ matrix.zts && 'ZTS' || 'NTS' }}${{ matrix.asan && '_ASAN' || '' }}-${{hashFiles('main/php_version.h')}}"
+          append-timestamp: false
+      - name: ./configure
+        uses: ./.github/actions/configure-alpine
+        with:
+          # -Wno-error=address: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114609
+          # -Wno-error=stringop-overread: main/getopt.c: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114622
+          configurationParameters: >-
+            --${{ matrix.debug && 'enable' || 'disable' }}-debug
+            --${{ matrix.zts && 'enable' || 'disable' }}-zts
+            ${{ matrix.asan && 'CFLAGS="-fsanitize=undefined,address -fno-sanitize=function -DZEND_TRACK_ARENA_ALLOC" LDFLAGS="-fsanitize=undefined,address -fno-sanitize=function" CC=clang-17 CXX=clang++-17' || 'CFLAGS="-Wno-error=address -Wno-error=stringop-overread"' }}
+          skipSlow: ${{ matrix.asan }}
+          configureArtifacts: ${{ matrix.debug && 'DEBUG' || 'RELEASE' }}_${{ matrix.zts && 'ZTS' || 'NTS' }}
+      - name: make
+        run: make -j$(/usr/bin/nproc) >/dev/null
+      - name: make install
+        uses: ./.github/actions/install-alpine
+      - name: Test
+        if: matrix.asan == false
+        uses: ./.github/actions/test-alpine
+        with:
+          testArtifacts: ${{ matrix.debug && 'DEBUG' || 'RELEASE' }}_${{ matrix.zts && 'ZTS' || 'NTS' }}
+      - name: Test Tracing JIT
+        uses: ./.github/actions/test-alpine
+        with:
+          testArtifacts: ${{ matrix.debug && 'DEBUG' || 'RELEASE' }}_${{ matrix.zts && 'ZTS' || 'NTS' }}${{ matrix.asan && '_ASAN' || '' }}_Tracing JIT
+          jitType: tracing
+          runTestsParameters: >-
+            -d zend_extension=opcache.so
+            -d opcache.enable_cli=1
+            ${{ matrix.asan && '--asan -x' || '' }}
   MACOS_DEBUG_NTS:
     if: github.repository == 'php/php-src' || github.event_name == 'pull_request'
     strategy:

Zend/zend.c

@@ -1403,7 +1403,7 @@ ZEND_API ZEND_COLD void zend_error_zstr_at(
 	zval retval;
 	zval orig_user_error_handler;
 	bool in_compilation;
-	zend_class_entry *saved_class_entry;
+	zend_class_entry *saved_class_entry = NULL;
 	zend_stack loop_var_stack;
 	zend_stack delayed_oplines_stack;
 	int type = orig_type & E_ALL;