fix: handle XL C/C++ lies about some attributes and builtins

This also adds a CI check for XL C/C++. Unfortunately, it is limited to their legacy compiler (16.x); I haven't been able to find a way to add a check for their newer, clang-based IBM Open XL C/C++ (17+). In fact.
nemequ · Sep 14, 2024 · 1db687f · 1db687f
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diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -13,168 +13,193 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  check-generated-files:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - name: Regenerate files
-        working-directory: test
-        run: make maintainer-clean && make generate ECHO="$(which echo)"
-      - name: Check for changes
-        run: git diff --exit-code
+  # check-generated-files:
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - uses: actions/checkout@v4
+  #     - name: Regenerate files
+  #       working-directory: test
+  #       run: make maintainer-clean && make generate ECHO="$(which echo)"
+  #     - name: Check for changes
+  #       run: git diff --exit-code
 
-  dmc:
-    runs-on: windows-latest
-    strategy:
-        matrix:
-          version:
-          - "8.26"
-          - "8.30"
-          - "8.40"
-          - "8.50"
-          - "8.57"
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install Digital Mars C/C++ Compiler
-        run: |
-          $version = "${{ matrix.version }}".Replace(".", "")
-          $url = "http://ftp.digitalmars.com/Digital_Mars_C++/Patch/dm${version}c.zip"
-          Invoke-WebRequest -Uri "${url}" -OutFile "dmc.zip"
-          Expand-Archive -LiteralPath "dmc.zip" -DestinationPath dmc-tmp
-          Move-Item -Path dmc-tmp\* -Destination dmc
-        working-directory: test
-      - name: Compile
-        env:
-          CC: dmc\bin\dmc.exe
-          CXX: dmc\bin\dmc.exe
-        run: make -f Makefile.dmc
-        working-directory: test
+  # dmc:
+  #   runs-on: windows-latest
+  #   strategy:
+  #       matrix:
+  #         version:
+  #         - "8.26"
+  #         - "8.30"
+  #         - "8.40"
+  #         - "8.50"
+  #         - "8.57"
+  #   steps:
+  #     - uses: actions/checkout@v4
+  #     - name: Install Digital Mars C/C++ Compiler
+  #       run: |
+  #         $version = "${{ matrix.version }}".Replace(".", "")
+  #         $url = "http://ftp.digitalmars.com/Digital_Mars_C++/Patch/dm${version}c.zip"
+  #         Invoke-WebRequest -Uri "${url}" -OutFile "dmc.zip"
+  #         Expand-Archive -LiteralPath "dmc.zip" -DestinationPath dmc-tmp
+  #         Move-Item -Path dmc-tmp\* -Destination dmc
+  #       working-directory: test
+  #     - name: Compile
+  #       env:
+  #         CC: dmc\bin\dmc.exe
+  #         CXX: dmc\bin\dmc.exe
+  #       run: make -f Makefile.dmc
+  #       working-directory: test
 
-  nvhpc:
-    runs-on: ubuntu-latest
-    strategy:
-        matrix:
-          version:
-          # For available versions, see
-          # https://developer.download.nvidia.com/hpc-sdk/ubuntu/amd64/Packages
-          #
-          # Note that version prior to 21.11 don't support passing
-          # arguments to the __malloc__ attribute, which glibc >= 2.34,
-          # which is used in CI, does unconditionally. That causes
-          # breaks several of the tests for versions prior to 21.11.
-          # - "20.11"
-          # - "21.1" ## BROKEN. File size mismatch.
-          # - "21.2"
-          # - "21.3"
-          # - "21.5"
-          # - "21.7"
-          # - "21.9"
-          - "21.11"
-          # - "22.1"
-          # - "22.2"
-          # - "22.3"
-          # - "22.5"
-          # - "22.7"
-          # - "22.9"
-          - "22.11"
-          # - "23.1"
-          # - "23.3"
-          # - "23.5"
-          # - "23.7"
-          # - "23.9"
-          - "23.11"
-          # - "24.1"
-          # - "24.3"
-          # - "24.7"
-    steps:
-      - uses: actions/checkout@v4
-      - name: Free some disk space
-        run: sudo rm -rf /usr/local/lib/android /usr/local/.ghcup/ghc
-      - name: Install NVidia HPC SDK
-        run: |
-          curl https://developer.download.nvidia.com/hpc-sdk/ubuntu/DEB-GPG-KEY-NVIDIA-HPC-SDK | sudo gpg --dearmor -o /usr/share/keyrings/nvidia-hpcsdk-archive-keyring.gpg
-          echo 'deb [signed-by=/usr/share/keyrings/nvidia-hpcsdk-archive-keyring.gpg] https://developer.download.nvidia.com/hpc-sdk/ubuntu/amd64 /' | sudo tee /etc/apt/sources.list.d/nvhpc.list
-          sudo apt-get update -y
-          sudo apt-get install -y nvhpc-$(echo "${{ matrix.version }}" | tr '.' '-')
-      - name: Compile
-        env:
-          CC: /opt/nvidia/hpc_sdk/Linux_x86_64/"${{ matrix.version }}"/compilers/bin/nvc
-          CXX: /opt/nvidia/hpc_sdk/Linux_x86_64/"${{ matrix.version }}"/compilers/bin/nvc++
-        working-directory: test
-        run: make
+  # nvhpc:
+  #   runs-on: ubuntu-latest
+  #   strategy:
+  #       matrix:
+  #         version:
+  #         # For available versions, see
+  #         # https://developer.download.nvidia.com/hpc-sdk/ubuntu/amd64/Packages
+  #         #
+  #         # Note that version prior to 21.11 don't support passing
+  #         # arguments to the __malloc__ atctribute, which glibc >= 2.34,
+  #         # which is used in CI, does unconditionally. That causes
+  #         # breaks several of the tests for versions prior to 21.11.
+  #         # - "20.11"
+  #         # - "21.1" ## BROKEN. File size mismatch.
+  #         # - "21.2"
+  #         # - "21.3"
+  #         # - "21.5"
+  #         # - "21.7"
+  #         # - "21.9"
+  #         - "21.11"
+  #         # - "22.1"
+  #         # - "22.2"
+  #         # - "22.3"
+  #         # - "22.5"
+  #         # - "22.7"
+  #         # - "22.9"
+  #         - "22.11"
+  #         # - "23.1"
+  #         # - "23.3"
+  #         # - "23.5"
+  #         # - "23.7"
+  #         # - "23.9"
+  #         - "23.11"
+  #         # - "24.1"
+  #         # - "24.3"
+  #         # - "24.7"
+  #   steps:
+  #     - uses: actions/checkout@v4
+  #     - name: Free some disk space
+  #       run: sudo rm -rf /usr/local/lib/android /usr/local/.ghcup/ghc
+  #     - name: Install NVidia HPC SDK
+  #       run: |
+  #         curl https://developer.download.nvidia.com/hpc-sdk/ubuntu/DEB-GPG-KEY-NVIDIA-HPC-SDK | sudo gpg --dearmor -o /usr/share/keyrings/nvidia-hpcsdk-archive-keyring.gpg
+  #         echo 'deb [signed-by=/usr/share/keyrings/nvidia-hpcsdk-archive-keyring.gpg] https://developer.download.nvidia.com/hpc-sdk/ubuntu/amd64 /' | sudo tee /etc/apt/sources.list.d/nvhpc.list
+  #         sudo apt-get update -y
+  #         sudo apt-get install -y nvhpc-$(echo "${{ matrix.version }}" | tr '.' '-')
+  #     - name: Compile
+  #       env:
+  #         CC: /opt/nvidia/hpc_sdk/Linux_x86_64/"${{ matrix.version }}"/compilers/bin/nvc
+  #         CXX: /opt/nvidia/hpc_sdk/Linux_x86_64/"${{ matrix.version }}"/compilers/bin/nvc++
+  #       working-directory: test
+  #       run: make
 
-  pelles-c:
-    runs-on: windows-latest
-    strategy:
-      matrix:
-        version:
-          # https://community.chocolatey.org/packages/pelles-c#versionhistory
-          - "12.0.2"
-          - "11.0.2"
-          - "10.0.6"
-          - "9.00.0.0"
-          # - "8.00.0.0" ## Installation times out.
-    steps:
-      - uses: actions/checkout@v2
-      - name: Install Pelles-C
-        uses: crazy-max/ghaction-chocolatey@v3
-        with:
-          args: install pelles-c --version "${{ matrix.version }}" --no-progress
-      - name: Compile
-        env:
-          CC: 'C:\Program Files\PellesC\bin\pocc.exe'
-          LD: 'C:\Program Files\PellesC\bin\polink.exe'
-          CFLAGS: '/IC:\Progra~1\PellesC\Include'
-          LDFLAGS: '/LIBPATH:C:\Progra~1\PellesC\lib /LIBPATH:C:\Progra~1\PellesC\Lib\Win64'
-        working-directory: test
-        run: make -f Makefile.pelles
+  # pelles-c:
+  #   runs-on: windows-latest
+  #   strategy:
+  #     matrix:
+  #       version:
+  #         # https://community.chocolatey.org/packages/pelles-c#versionhistory
+  #         - "12.0.2"
+  #         - "11.0.2"
+  #         - "10.0.6"
+  #         - "9.00.0.0"
+  #         # - "8.00.0.0" ## Installation times out.
+  #   steps:
+  #     - uses: actions/checkout@v2
+  #     - name: Install Pelles-C
+  #       uses: crazy-max/ghaction-chocolatey@v3
+  #       with:
+  #         args: install pelles-c --version "${{ matrix.version }}" --no-progress
+  #     - name: Compile
+  #       env:
+  #         CC: 'C:\Program Files\PellesC\bin\pocc.exe'
+  #         LD: 'C:\Program Files\PellesC\bin\polink.exe'
+  #         CFLAGS: '/IC:\Progra~1\PellesC\Include'
+  #         LDFLAGS: '/LIBPATH:C:\Progra~1\PellesC\lib /LIBPATH:C:\Progra~1\PellesC\Lib\Win64'
+  #       working-directory: test
+  #       run: make -f Makefile.pelles
 
-  tcc:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-    - name: Install Tiny C Compiler
-      run: |
-        sudo apt-get install -y tcc
-    - name: Compile
-      env:
-        CC: tcc
-      working-directory: test
-      run: make
+  # tcc:
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #   - uses: actions/checkout@v4
+  #   - name: Install Tiny C Compiler
+  #     run: |
+  #       sudo apt-get install -y tcc
+  #   - name: Compile
+  #     env:
+  #       CC: tcc
+  #     working-directory: test
+  #     run: make
+
+  # ti:
+  #   runs-on: ubuntu-latest
+  #   strategy:
+  #     matrix:
+  #       include:
+  #       - tool: ARM
+  #         version: 20.2.7.LTS
+  #         compiler: armcl
+  #       - tool: MSP
+  #         version: 21.6.1.LTS
+  #         compiler: cl430
+  #       - tool: C2000
+  #         version: 22.6.1.LTS
+  #         compiler: cl2000
+  #       - tool: C6000
+  #         version: 8.3.13
+  #         compiler: cl6x
+  #       - tool: C7000
+  #         version: 4.1.0.LTS
+  #         compiler: cl7x
+  #       - tool: PRU
+  #         version: 2.3.3
+  #         compiler: clpru
+  #   steps:
+  #   - uses: actions/checkout@v4
+  #   - name: Install Compiler
+  #     run: |
+  #       curl -s -o installer.bin "$(curl -s "https://www.ti.com/tool/download/${{ matrix.tool }}-CGT/${{ matrix.version }}" | grep -oP 'https://[a-zA-Z0-9\._\-/]+\.bin')"
+  #       chmod u+x installer.bin
+  #       ./installer.bin --mode unattended --unattendedmodeui none --prefix ti-compiler
+  #       mv ti-compiler/* ti-compiler/compiler
+  #   - name: Compile
+  #     env:
+  #       CC: ../ti-compiler/compiler/bin/${{ matrix.compiler }}
+  #     working-directory: test
+  #     run: make
 
-  ti:
+  xlc:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        include:
-        - tool: ARM
-          version: 20.2.7.LTS
-          compiler: armcl
-        - tool: MSP
-          version: 21.6.1.LTS
-          compiler: cl430
-        - tool: C2000
-          version: 22.6.1.LTS
-          compiler: cl2000
-        - tool: C6000
-          version: 8.3.13
-          compiler: cl6x
-        - tool: C7000
-          version: 4.1.0.LTS
-          compiler: cl7x
-        - tool: PRU
-          version: 2.3.3
-          compiler: clpru
     steps:
     - uses: actions/checkout@v4
-    - name: Install Compiler
-      run: |
-        curl -s -o installer.bin "$(curl -s "https://www.ti.com/tool/download/${{ matrix.tool }}-CGT/${{ matrix.version }}" | grep -oP 'https://[a-zA-Z0-9\._\-/]+\.bin')"
-        chmod u+x installer.bin
-        ./installer.bin --mode unattended --unattendedmodeui none --prefix ti-compiler
-        mv ti-compiler/* ti-compiler/compiler
-    - name: Compile
-      env:
-        CC: ../ti-compiler/compiler/bin/${{ matrix.compiler }}
-      working-directory: test
-      run: make
+    - uses: uraimo/run-on-arch-action@v2
+      name: Run commands
+      id: runcmd
+      with:
+        arch: ppc64le
+        distro: ubuntu22.04
+        install: |
+          apt-get update
+          apt-get install -y curl gnupg make libncurses5
+          curl -s https://public.dhe.ibm.com/software/server/POWER/Linux/xl-compiler/eval/ppc64le/ubuntu/public.gpg | apt-key add -
+          echo "deb https://public.dhe.ibm.com/software/server/POWER/Linux/xl-compiler/eval/ppc64le/ubuntu/ trusty main" | tee /etc/apt/sources.list.d/ibm-xl-compiler-eval.list
+          apt-get update
+          apt-get install -y xlc.16.1.1
+          /opt/ibm/xlC/16.1.1/bin/xlc_configure <<< 1
+        env: |
+          CC: xlc
+          CXX: xlc++
+        run: |
+          cd test
+          make
diff --git a/hedley.h b/hedley.h
@@ -1348,7 +1348,9 @@ HEDLEY_DIAGNOSTIC_POP
 #if defined(HEDLEY_UNPREDICTABLE)
 #  undef HEDLEY_UNPREDICTABLE
 #endif
-#if HEDLEY_HAS_BUILTIN(__builtin_unpredictable)
+#if \
+  HEDLEY_HAS_BUILTIN(__builtin_unpredictable) && \
+  (!defined(HEDLEY_IBM_VERSION) || HEDLEY_IBM_VERSION_CHECK(17,0,0))
 #  define HEDLEY_UNPREDICTABLE(expr) __builtin_unpredictable((expr))
 #endif
 #if \
@@ -1969,7 +1971,10 @@ HEDLEY_DIAGNOSTIC_POP
 #if defined(HEDLEY_FLAGS)
 #  undef HEDLEY_FLAGS
 #endif
-#if HEDLEY_HAS_ATTRIBUTE(flag_enum) && (!defined(__cplusplus) || HEDLEY_HAS_WARNING("-Wbitfield-enum-conversion"))
+#if \
+  HEDLEY_HAS_ATTRIBUTE(flag_enum) && \
+  (!defined(__cplusplus) || HEDLEY_HAS_WARNING("-Wbitfield-enum-conversion")) && \
+  (!defined(HEDLEY_IBM_VERSION) || HEDLEY_IBM_VERSION_CHECK(17,0,0))
 #  define HEDLEY_FLAGS __attribute__((__flag_enum__))
 #else
 #  define HEDLEY_FLAGS

diff --git a/test/empty-bases.c b/test/empty-bases.c
@@ -1,6 +1,10 @@
 #include "../hedley.h"
 
-#if HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#if HEDLEY_HAS_WARNING("-Wc++11-extra-semi")
+#  pragma clang diagnostic warning "-Wc++11-extra-semi"
+#elif HEDLEY_HAS_WARNING("-Wextra-semi")
+#  pragma clang diagnostic warning "-Wextra-semi"
+#elif HEDLEY_IAR_VERSION_CHECK(8,0,0)
 #  pragma diag_suppress=Pe381
 #elif defined(HEDLEY_SUNPRO_VERSION) && !defined(__cplusplus)
 #  pragma error_messages(off,E_EMPTY_DECLARATION)

diff --git a/test/static-assert.c b/test/static-assert.c
@@ -1,6 +1,8 @@
 #include "../hedley.h"
 
-#if HEDLEY_IAR_VERSION_CHECK(8,0,0)
+#if HEDLEY_HAS_WARNING("-Wextra-semi")
+#  pragma clang diagnostic warning "-Wextra-semi"
+#elif HEDLEY_IAR_VERSION_CHECK(8,0,0)
 #  pragma diag_suppress=Pe381
 #elif defined(HEDLEY_SUNPRO_VERSION) && !defined(__cplusplus)
 #  pragma error_messages(off,E_EMPTY_DECLARATION)