qcalendar_wrapper.cpp:502:34: error: expected unqualified-id before '(' token with llvm 16

2023-04-07T07:57:20.0111325Z FAILED: PySide6/QtCore/CMakeFiles/QtCore.dir/PySide6/QtCore/qcalendar_wrapper.cpp.o 2023-04-07T07:57:20.0118999Z $BUILD_PREFIX/bin/x86_64-conda-linux-gnu-c++ -DNDEBUG -DPy_LIMITED_API=0x03060000 -DQT_CORE_LIB -DQT_LEAN_HEADERS=1 -DQT_NO_DEBUG -DQtCore_EXPORTS -I$SRC_DIR/sources/pyside6/PySide6/QtCore/QtCore -I$SRC_DIR/sources/pyside6/PySide6/QtCore -I$SRC_DIR/sources/pyside6/build/PySide6/QtCore -I$SRC_DIR/sources/pyside6/PySide6 -I$SRC_DIR/sources/pyside6/libpyside -isystem $PREFIX/include/qt6/QtCore -isystem $PREFIX/include/qt6 -isystem $PREFIX/lib/qt6/mkspecs/linux-g++ -isystem $PREFIX/include/shiboken6 -isystem $PREFIX/include/python3.9 -fvisibility-inlines-hidden -fmessage-length=0 -march=nocona -mtune=haswell -ftree-vectorize -fPIC -fstack-protector-strong -fno-plt -O2 -ffunction-sections -pipe -isystem $PREFIX/include -fdebug-prefix-map=$SRC_DIR=/usr/local/src/conda/pyside6-6.5.0 -fdebug-prefix-map=$PREFIX=/usr/local/src/conda-prefix -Wall -Wextra -Wno-strict-aliasing -Wno-cast-function-type -fvisibility=hidden -Os -DNDEBUG -std=gnu++17 -fPIC -fPIC -ffunction-sections -fdata-sections -fno-exceptions -fPIC -pthread -MD -MT PySide6/QtCore/CMakeFiles/QtCore.dir/PySide6/QtCore/qcalendar_wrapper.cpp.o -MF PySide6/QtCore/CMakeFiles/QtCore.dir/PySide6/QtCore/qcalendar_wrapper.cpp.o.d -o PySide6/QtCore/CMakeFiles/QtCore.dir/PySide6/QtCore/qcalendar_wrapper.cpp.o -c $SRC_DIR/sources/pyside6/build/PySide6/QtCore/PySide6/QtCore/qcalendar_wrapper.cpp 2023-04-07T07:57:20.0126327Z $SRC_DIR/sources/pyside6/build/PySide6/QtCore/PySide6/QtCore/qcalendar_wrapper.cpp: In function 'PyObject* Sbk_QCalendarFunc_daysInMonth(PyObject*, PyObject*, PyObject*)': 2023-04-07T07:57:20.0131395Z $SRC_DIR/sources/pyside6/build/PySide6/QtCore/PySide6/QtCore/qcalendar_wrapper.cpp:502:34: error: expected unqualified-id before '(' token 2023-04-07T07:57:20.0135972Z 502 | int cppArg1 = QCalendar::(unnamed enum at $PREFIX/include/qt6/QtCore/qcalendar.h:57:5)::Unspecified;

class Q_CORE_EXPORT QCalendar 
{ 
   Q_GADGET 
public: 
   // (Extra parentheses to suppress bogus reading of min() as a macro.) 
   enum : int { Unspecified = (std::numeric_limits<int>::min)() };

int cppArg1 = QCalendar::(unnamed enum at $PREFIX/include/qt6/QtCore/qcalendar.h:57:5)::Unspecified;