Found the following significant warnings:
  Rwrapper.cpp:314:24: warning: enumeration value 'NoType' not handled in switch [-Wswitch]
  Rwrapper.cpp:372:32: warning: enumeration value 'NoType' not handled in switch [-Wswitch]
  Rwrapper.cpp:367:24: warning: enumeration values 'SingleCateg', 'SubTrees', and 'Root' not handled in switch [-Wswitch]
  Rwrapper.cpp:529:32: warning: enumeration value 'NoType' not handled in switch [-Wswitch]
  Rwrapper.cpp:564:40: warning: 7 enumeration values not handled in switch: 'Equal', 'NotEqual', 'InSubset'... [-Wswitch]
  Rwrapper.cpp:624:40: warning: 5 enumeration values not handled in switch: 'LessOrEqual', 'Greater', 'SingleCateg'... [-Wswitch]
  Rwrapper.cpp:721:40: warning: 5 enumeration values not handled in switch: 'InSubset', 'NotInSubset', 'SingleCateg'... [-Wswitch]
  Rwrapper.cpp:550:32: warning: enumeration value 'NoType' not handled in switch [-Wswitch]
  Rwrapper.cpp:789:32: warning: enumeration value 'NoType' not handled in switch [-Wswitch]
  Rwrapper.cpp:824:40: warning: enumeration value 'NoType' not handled in switch [-Wswitch]
  Rwrapper.cpp:819:32: warning: enumeration values 'SubTrees' and 'Root' not handled in switch [-Wswitch]
  clusters.cpp:694:16: warning: enumeration values 'Numeric' and 'NoType' not handled in switch [-Wswitch]
  clusters.cpp:829:32: warning: 7 enumeration values not handled in switch: 'LessOrEqual', 'Greater', 'Equal'... [-Wswitch]
  clusters.cpp:860:36: warning: 7 enumeration values not handled in switch: 'LessOrEqual', 'Greater', 'Equal'... [-Wswitch]
  clusters.cpp:889:36: warning: 8 enumeration values not handled in switch: 'LessOrEqual', 'Greater', 'Equal'... [-Wswitch]
  clusters.cpp:806:16: warning: enumeration values 'Numeric' and 'NoType' not handled in switch [-Wswitch]
  fit_model.cpp:906:16: warning: enumeration value 'NoType' not handled in switch [-Wswitch]
  fit_model.cpp:988:20: warning: 5 enumeration values not handled in switch: 'Equal', 'NotEqual', 'SingleCateg'... [-Wswitch]
  fit_model.cpp:1743:16: warning: enumeration value 'NoType' not handled in switch [-Wswitch]
  fit_model.cpp:1903:24: warning: enumeration values 'Equal', 'NotEqual', and 'Root' not handled in switch [-Wswitch]
  predict.cpp:202:33: warning: 7 enumeration values not handled in switch: 'Equal', 'NotEqual', 'InSubset'... [-Wswitch]
  predict.cpp:237:33: warning: 5 enumeration values not handled in switch: 'LessOrEqual', 'Greater', 'SingleCateg'... [-Wswitch]
  predict.cpp:290:33: warning: 5 enumeration values not handled in switch: 'InSubset', 'NotInSubset', 'SingleCateg'... [-Wswitch]
  predict.cpp:197:24: warning: enumeration value 'NoType' not handled in switch [-Wswitch]
  predict.cpp:533:28: warning: 7 enumeration values not handled in switch: 'Equal', 'NotEqual', 'InSubset'... [-Wswitch]
  predict.cpp:559:28: warning: 5 enumeration values not handled in switch: 'LessOrEqual', 'Greater', 'SingleCateg'... [-Wswitch]
  predict.cpp:599:28: warning: 5 enumeration values not handled in switch: 'InSubset', 'NotInSubset', 'SingleCateg'... [-Wswitch]
See '/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/outliertree.Rcheck/00install.out' for details.