clang tools fail to work for android project with qtcreator 4.8.1

    I have a project which is targeted to both Android and Windows. After upgrading my qtcreator from 4.7.2 to 4.8.1, clang tools fail to work for android kits, a lot of warning show up which complain about incomplete type. But in fact these types/classes are defined in another files or just Qt class. Clang tools works fine for Windows kits, it also works fine in both Kits with qtcreator 4.7.2. This should be a regression from qtcreator 4.7.2