Test Connector C strict-aliasing variant on Windows

Author: quinnj

.github/workflows/issue236-windows.yml

@@ -10,6 +10,44 @@ on:
   workflow_dispatch:
 
 jobs:
+  build-yggdrasil-variant:
+    name: Build Yggdrasil variant / fno-strict-aliasing
+    if: github.event_name == 'workflow_dispatch'
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: "1.12"
+
+      - uses: actions/checkout@v5
+        with:
+          repository: JuliaPackaging/Yggdrasil
+          path: Yggdrasil
+
+      - name: Patch MariaDB Connector/C recipe
+        shell: bash
+        run: |
+          set -euo pipefail
+          cd Yggdrasil/M/MariaDB_Connector_C
+          perl -0pi -e 's/\Q-Wno-error -Wno-incompatible-pointer-types\E/-Wno-error -Wno-incompatible-pointer-types -fno-strict-aliasing/' build_tarballs.jl
+          grep -n 'fno-strict-aliasing' build_tarballs.jl
+
+      - name: Build Windows tarball
+        shell: bash
+        run: |
+          set -euo pipefail
+          cd Yggdrasil/M/MariaDB_Connector_C
+          julia --project=../.. --startup-file=no build_tarballs.jl --verbose x86_64-w64-mingw32
+          mkdir -p "$GITHUB_WORKSPACE/variant"
+          cp products/MariaDB_Connector_C.v*.x86_64-w64-mingw32.tar.gz "$GITHUB_WORKSPACE/variant/"
+          cp products/MariaDB_Connector_C-logs.v*.x86_64-w64-mingw32.tar.gz "$GITHUB_WORKSPACE/variant/"
+
+      - uses: actions/upload-artifact@v5
+        with:
+          name: mariadb-connector-c-fno-strict-aliasing
+          path: variant/*.tar.gz
+
   issue236:
     name: Windows ${{ matrix.os }} / ${{ matrix.connector }}
     runs-on: ${{ matrix.os }}
@@ -77,3 +115,70 @@ jobs:
           MYSQLJL_CONNECTOR: ${{ matrix.connector }}
           MYSQLJL_JLL_VERSION: ${{ matrix.connector == 'jll-3.3.9' && '3.3.9' || 'default' }}
         run: julia --startup-file=no test/issue236_windows.jl
+
+  issue236-yggdrasil-variant:
+    name: Windows ${{ matrix.os }} / yggdrasil-fno-strict-aliasing
+    if: github.event_name == 'workflow_dispatch'
+    needs: build-yggdrasil-variant
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - windows-2022
+          - windows-2025
+
+    steps:
+      - uses: actions/checkout@v5
+
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: "1"
+          arch: x64
+
+      - name: Start MySQL
+        uses: shogo82148/actions-setup-mysql@v1.51.0
+        with:
+          mysql-version: "8.4"
+          root-password: root
+
+      - uses: actions/download-artifact@v5
+        with:
+          name: mariadb-connector-c-fno-strict-aliasing
+          path: ${{ runner.temp }}/variant
+
+      - name: Use Yggdrasil variant
+        shell: pwsh
+        run: |
+          $target = Join-Path $env:RUNNER_TEMP "mariadb-connector-c-fno-strict-aliasing"
+          New-Item -ItemType Directory -Force -Path $target | Out-Null
+          $tarball = Get-ChildItem (Join-Path $env:RUNNER_TEMP "variant") -Filter "MariaDB_Connector_C.v*.x86_64-w64-mingw32.tar.gz" | Select-Object -First 1
+          if ($null -eq $tarball) {
+            throw "Could not find built Connector/C tarball"
+          }
+          tar -xzf $tarball.FullName -C $target
+
+          $dll = Join-Path $target "bin/libmariadb.dll"
+          $plugin = Join-Path $target "lib/mariadb/plugin"
+          if (!(Test-Path $dll)) {
+            throw "Could not find libmariadb.dll at $dll"
+          }
+          if (!(Test-Path (Join-Path $plugin "caching_sha2_password.dll"))) {
+            throw "Could not find Connector/C plugin directory at $plugin"
+          }
+
+          "MYSQLJL_LIBMARIADB_OVERRIDE=$dll" >> $env:GITHUB_ENV
+          "MYSQLJL_PLUGIN_DIR_OVERRIDE=$plugin" >> $env:GITHUB_ENV
+          "$(Split-Path -Parent $dll)" >> $env:GITHUB_PATH
+
+      - name: Run issue 236 diagnostic
+        shell: pwsh
+        env:
+          MYSQLJL_HOST: 127.0.0.1
+          MYSQLJL_PORT: "3306"
+          MYSQLJL_USER: root
+          MYSQLJL_PASSWORD: root
+          MYSQLJL_CONNECTOR: yggdrasil-fno-strict-aliasing
+          MYSQLJL_JLL_VERSION: default
+        run: julia --startup-file=no test/issue236_windows.jl

test/issue236_windows.jl

@@ -38,6 +38,15 @@ function logline(xs...)
     return nothing
 end
 
+function log_mysql_bind_layout()
+    names = fieldnames(MySQL.API.MYSQL_BIND)
+    logline("MYSQL_BIND_SIZE ", sizeof(MySQL.API.MYSQL_BIND))
+    for (i, name) in pairs(names)
+        logline("MYSQL_BIND_FIELD ", name, " offset=", fieldoffset(MySQL.API.MYSQL_BIND, i))
+    end
+    return nothing
+end
+
 function connect_root(; db=nothing)
     host = get(ENV, "MYSQLJL_HOST", "127.0.0.1")
     port = parse(Int, get(ENV, "MYSQLJL_PORT", "3306"))
@@ -148,6 +157,7 @@ function main()
     logline("CCALL_LIBMARIADB ", MySQL.API.libmariadb_for_ccall)
     logline("PLUGIN_DIR ", MySQL.API.PLUGIN_DIR)
     logline("LIBMARIADB_HANDLE ", Libdl.dlopen_e(MySQL.API.libmariadb_for_ccall))
+    log_mysql_bind_layout()
 
     conn = prepare_database()
     try