Specify clang-19

Author: Fidget-Spinner

.github/workflows/tail-call.yml

@@ -95,7 +95,7 @@ jobs:
           find /usr/local/bin -lname '*/Library/Frameworks/Python.framework/*' -delete
           brew install llvm@${{ matrix.llvm }}
           export SDKROOT="$(xcrun --show-sdk-path)"
-          ./configure --with-tail-call-interp ${{ matrix.debug && '--with-pydebug' || '' }}
+          CC=clang-19 ./configure --with-tail-call-interp ${{ matrix.debug && '--with-pydebug' || '' }}
           make all --jobs 4
           ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3