Fix

Author: Fidget-Spinner

.github/workflows/tail-call.yml

@@ -105,16 +105,18 @@ jobs:
         # This is a bug in the macOS runner image where the pre-installed Python is installed in the same
         # directory as the Homebrew Python, which causes the build to fail for macos-13. This line removes
         # the symlink to the pre-installed Python so that the Homebrew Python is used instead.
+        # Note: when a new LLVM is released, the homebrew installation directory changes, so the builds will fail.
+        # We either need to upgrade LLVM or change the directory being pointed to.
       - name: Native macOS (release)
         if: runner.os == 'macOS'
         run: |
           brew update
           find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
           brew install llvm@${{ matrix.llvm }}
           export SDKROOT="$(xcrun --show-sdk-path)"
-          export PATH="/opt/homebrew/opt/llvm@${{ matrix.llvm }}/bin:$PATH"
-          export PATH="/usr/local/opt/llvm@${{ matrix.llvm }}/bin:$PATH"
-          CC=clang-19 ./configure --with-tail-call-interp
+          export PATH="/opt/homebrew/Cellar/llvm/{{ matrix.llvm }}.1.0:$PATH"
+          export PATH="/usr/local/opt/llvm/bin:$PATH"
+          CC=clang-20 ./configure --with-tail-call-interp
           make all --jobs 4
           ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
@@ -123,7 +125,7 @@ jobs:
         run: |
           sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
           export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
-          CC=clang-19 ./configure --with-tail-call-interp --with-pydebug
+          CC=clang-20 ./configure --with-tail-call-interp --with-pydebug
           make all --jobs 4
           ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
@@ -132,7 +134,7 @@ jobs:
         run: |
           sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
           export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
-          CC=clang-19 ./configure --with-tail-call-interp --disable-gil
+          CC=clang-20 ./configure --with-tail-call-interp --disable-gil
           make all --jobs 4
           ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 

Include/internal/pycore_debug_offsets.h

@@ -23,10 +23,12 @@ extern "C" {
    declaration                                      \
    _GENERATE_DEBUG_SECTION_LINUX(name)
 
-#if defined(MS_WINDOWS)
+#if defined(MS_WINDOWS) && !defined(__clang__)
 #define _GENERATE_DEBUG_SECTION_WINDOWS(name)                       \
    _Pragma(Py_STRINGIFY(section(Py_STRINGIFY(name), read, write))) \
    __declspec(allocate(Py_STRINGIFY(name)))
+#elif defined(MS_WINDOWS) && defined(__clang__)
+    _Pragma(Py_STRINGIFY(section(Py_STRINGIFY(name), read, write)))
 #else
 #define _GENERATE_DEBUG_SECTION_WINDOWS(name)
 #endif