In file included from engines/ultima8/detection.cpp:23:
In file included from ./engines/ultima8/ultima8.h:35:
./engines/ultima8/std/containers.h:45:31: error: no member named '__1' in
      namespace 'Ultima8::std'; did you mean '::std::__1'?
                reverse_iterator() : _owner(nullptr), _index(-1) {}
                                            ^~~~~~~
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__nullptr:49:17: note:
      expanded from macro 'nullptr'
#define nullptr _VSTD::__get_nullptr_t()
                ^~~~~
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:873:15: note:
      expanded from macro '_VSTD'
#define _VSTD std::_LIBCPP_ABI_NAMESPACE
              ^~~~~
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/new:213:1: note:
      '::std::__1' declared here
_LIBCPP_BEGIN_NAMESPACE_STD
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:871:70: note:
      expanded from macro '_LIBCPP_BEGIN_NAMESPACE_STD'
#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI...
                                                                     ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:160:32: note:
      expanded from macro '_LIBCPP_ABI_NAMESPACE'
# define _LIBCPP_ABI_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION)
                               ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:157:45: note:
      expanded from macro '_LIBCPP_CONCAT'
#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y)
                                            ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:156:46: note:
      expanded from macro '_LIBCPP_CONCAT1'
#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y
                                             ^
<scratch space>:130:1: note: expanded from here
__1
^
In file included from engines/ultima8/detection.cpp:23:
In file included from ./engines/ultima8/ultima8.h:37:
In file included from ./engines/ultima8/misc/args.h:28:
./engines/ultima8/std/string.h:42:31: error: no member named '__1' in namespace
      'Ultima8::std'; did you mean '::std::__1'?
                reverse_iterator() : _owner(nullptr), _index(-1) {}
                                            ^~~~~~~
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__nullptr:49:17: note:
      expanded from macro 'nullptr'
#define nullptr _VSTD::__get_nullptr_t()
                ^~~~~
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:873:15: note:
      expanded from macro '_VSTD'
#define _VSTD std::_LIBCPP_ABI_NAMESPACE
              ^~~~~
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/new:213:1: note:
      '::std::__1' declared here
_LIBCPP_BEGIN_NAMESPACE_STD
^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:871:70: note:
      expanded from macro '_LIBCPP_BEGIN_NAMESPACE_STD'
#define _LIBCPP_BEGIN_NAMESPACE_STD namespace std { inline namespace _LIBCPP_ABI...
                                                                     ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:160:32: note:
      expanded from macro '_LIBCPP_ABI_NAMESPACE'
# define _LIBCPP_ABI_NAMESPACE _LIBCPP_CONCAT(__,_LIBCPP_ABI_VERSION)
                               ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:157:45: note:
      expanded from macro '_LIBCPP_CONCAT'
#define _LIBCPP_CONCAT(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y)
                                            ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__config:156:46: note:
      expanded from macro '_LIBCPP_CONCAT1'
#define _LIBCPP_CONCAT1(_LIBCPP_X,_LIBCPP_Y) _LIBCPP_X##_LIBCPP_Y