[bcc32 Error] typeinfo.h(154): E2367 Can't inherit RTTI class from non-RTTI base 'exception'
  Full parser context
    HISPluginDebug.cpp(3): #include d:\program files (x86)\embarcadero\studio\18.0\include\windows\vcl\vcl.h
    vcl.h(10): #include d:\program files (x86)\embarcadero\studio\18.0\include\windows\vcl\basepch0.h
    basepch0.h(62): #include d:\program files (x86)\embarcadero\studio\18.0\include\windows\rtl\System.hpp
    System.hpp(1599): #include d:\program files (x86)\embarcadero\studio\18.0\include\windows\rtl\sysclass.h
    sysclass.h(38): #include d:\program files (x86)\embarcadero\studio\18.0\include\dinkumware\iostream
    iostream(5): #include d:\program files (x86)\embarcadero\studio\18.0\include\dinkumware\istream
    istream(5): #include d:\program files (x86)\embarcadero\studio\18.0\include\dinkumware\ostream
    ostream(5): #include d:\program files (x86)\embarcadero\studio\18.0\include\dinkumware\ios
    ios(5): #include d:\program files (x86)\embarcadero\studio\18.0\include\dinkumware\xlocnum
    xlocnum(8): #include d:\program files (x86)\embarcadero\studio\18.0\include\dinkumware\streambuf
    streambuf(5): #include d:\program files (x86)\embarcadero\studio\18.0\include\dinkumware\xiosbase
    xiosbase(4): #include d:\program files (x86)\embarcadero\studio\18.0\include\dinkumware\xlocale
    xlocale(7): #include d:\program files (x86)\embarcadero\studio\18.0\include\dinkumware\typeinfo
    typeinfo(8): #include d:\program files (x86)\embarcadero\studio\18.0\include\windows\crtl\typeinfo.h
    typeinfo.h(55): namespace std
    typeinfo.h(154): class bad_cast

懒得找原因了，新建工程OK了。