Pasting compiler error below:
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:308:7: error: field has incomplete type 'void'
_Hp _value;
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:466:14: note: in instantiation of template class 'std::__tuple_leaf<0, void>' requested here
: public __tuple_leaf<_Indx, _Tp>... {
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:541:10: note: in instantiation of template class 'std::__tuple_impl<std::__tuple_indices<0>, void>' requested here
_BaseT _base;
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:538:28: note: in instantiation of template class 'std::tuple' requested here
class _LIBCPP_TEMPLATE_VIS tuple {
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:389:58: error: cannot form a reference to 'void'
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _Hp& get() _NOEXCEPT { return _value; }
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:390:64: error: cannot form a reference to 'void'
_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 const _Hp& get() const _NOEXCEPT { return _value; }
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:585:83: error: cannot form a reference to 'void'
_LIBCPP_CONSTEXPR_SINCE_CXX14 explicit(_Not<_Lazy<_And, is_convertible<const _Tp&, _Tp>...> >::value)
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:538:28: note: in instantiation of template class 'std::tuple' requested here
class _LIBCPP_TEMPLATE_VIS tuple {
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:597:83: error: cannot form a reference to 'void'
_LIBCPP_CONSTEXPR_SINCE_CXX20 explicit(_Not<_Lazy<_And, is_convertible<const _Tp&, _Tp>...> >::value)
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:972:83: error: cannot form a reference to 'void'
__enable_if_t< _And< _BoolConstant<_Np == sizeof...(_Tp)>, is_assignable<_Tp&, _Up const&>... >::value, int> = 0>
^
/Users/adam/Downloads/Xcode-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX26.0.sdk/usr/include/c++/v1/tuple:983:89: error: cannot form a reference to 'void'
__enable_if_t< _And< _BoolConstant<_Np == sizeof...(_Tp)>, is_assignable<_Tp&, _Up>... >::value, int> = 0>