This is due to the recently added config option validators [1] (aimed to solve the API issue with rbd_default_features option). It uses std::is_constructible to check if a type exists or just forward declared. Apparently, it does not work for clang. Using std::is_destructible instead looks like work [2]. [1] https://github.com/ceph/ceph/pull/12486 [2] https://github.com/trociny/ceph/commit/bd584fe797e30d666800cd4d9b440d4b51d1d27e On Sat, Dec 17, 2016 at 01:34:48PM +0100, Willem Jan Withagen wrote: > Hi, > > My FreeBSD builder starts to complain during compilation about > the error repeated below. > > > --WjW > > n file included from > /home/jenkins/workspace/ceph-master/src/common/config.cc:15: > In file included from > /home/jenkins/workspace/ceph-master/src/auth/Auth.h:18: > In file included from > /home/jenkins/workspace/ceph-master/src/auth/Crypto.h:18: > In file included from > /home/jenkins/workspace/ceph-master/src/include/types.h:21: > In file included from > /home/jenkins/workspace/ceph-master/src/include/uuid.h:8: > In file included from > /home/jenkins/workspace/ceph-master/src/include/encoding.h:19: > In file included from > /home/jenkins/workspace/ceph-master/src/include/rados/memory.h:4: > In file included from /usr/include/c++/v1/memory:599: > /usr/include/c++/v1/type_traits:2857:38: error: incomplete type > 'md_config_t::option_host_t' used in type trait expression > : public integral_constant<bool, __is_constructible(_Tp, _Args...)> > ^ > /home/jenkins/workspace/ceph-master/src/common/config.cc:110:31: note: > in instantiation of template class > 'std::__1::is_constructible<md_config_t::option_host_t>' requested here > typename std::enable_if<!std::is_constructible<T>::value, > ^ > /home/jenkins/workspace/ceph-master/src/common/config_opts.h:16:1: note: > while substituting explicitly-specified template arguments into function > template 'create_validator' > OPTION(host, OPT_STR, "localhost") > ^ > /home/jenkins/workspace/ceph-master/src/common/config.cc:168:37: note: > expanded from macro 'OPTION' > #define OPTION(name, type, def_val) OPTION4(name, type, def_val, false) > ^ > /home/jenkins/workspace/ceph-master/src/common/config.cc:167:24: note: > expanded from macro 'OPTION4' > create_validator<option_##name##_t>() }, > ^ > /home/jenkins/workspace/ceph-master/src/common/config_opts.h:16:1: note: > forward declaration of 'md_config_t::option_host_t' > OPTION(host, OPT_STR, "localhost") > ^ > /home/jenkins/workspace/ceph-master/src/common/config.h:321:12: note: > expanded from macro 'OPTION' > struct option_##name##_t; > ^ > <scratch space>:51:1: note: expanded from here > option_host_t > ^ > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Mykola Golub -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
