/usr/include/tao/PI_Server/ is in libtao-dev 6.0.1-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/tao/PI_Server/PICurrent_Guard.h
/usr/include/tao/PI_Server/PI_Server.h
/usr/include/tao/PI_Server/PI_Server_Loader.h
/usr/include/tao/PI_Server/PI_Server_includeA.h
/usr/include/tao/PI_Server/PI_Server_includeC.h
/usr/include/tao/PI_Server/PI_Server_includeS.h
/usr/include/tao/PI_Server/Policy_Creator_T.h
/usr/include/tao/PI_Server/PortableServer_ORBInitializer.h
/usr/include/tao/PI_Server/PortableServer_PolicyFactory.h
/usr/include/tao/PI_Server/ServerInterceptorAdapter.h
/usr/include/tao/PI_Server/ServerRequestDetails.h
/usr/include/tao/PI_Server/ServerRequestDetails.inl
/usr/include/tao/PI_Server/ServerRequestInfo.h
/usr/include/tao/PI_Server/ServerRequestInfo.inl
/usr/include/tao/PI_Server/ServerRequestInfoA.h
/usr/include/tao/PI_Server/ServerRequestInfoC.h
/usr/include/tao/PI_Server/ServerRequestInfoS.h
/usr/include/tao/PI_Server/ServerRequestInterceptorA.h
/usr/include/tao/PI_Server/ServerRequestInterceptorC.h
/usr/include/tao/PI_Server/ServerRequestInterceptorS.h
/usr/include/tao/PI_Server/ServerRequestInterceptor_Factory_Impl.h
/usr/include/tao/PI_Server/pi_server_export.h