Hello Am 24.08.2010, 19:05 Uhr, schrieb John Maddock <boost.regex@virgin.net>:
On FreeBSD 8.1 with boost 1.43 and gcc 4.2.1 we have lots of warnings like:
... /usr/local/include/boost/type_traits/is_unsigned.hpp: In instantiation of 'boost::detail::is_ununsigned_helper<short int>': /usr/local/include/boost/type_traits/is_unsigned.hpp:73: instantiated from 'boost::detail::is_unsigned_imp<short int>' /usr/local/include/boost/type_traits/is_unsigned.hpp:123: instantiated from 'boost::is_unsigned<short int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:110: instantiated from 'boost::detail::make_unsigned_imp<short int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:130: instantiated from 'boost::make_unsigned<short int>' /usr/local/include/boost/lexical_cast.hpp:846: instantiated from here /usr/local/include/boost/type_traits/is_unsigned.hpp:40: warning: comparison between 'enum boost::detail::is_unsigned_values<short int>::<anonymous>' and 'enum boost::detail::is_unsigned_values<short int>::<anonymous>'
I'm not able to reproduce that with cygwin-gcc-4.3.4 and -Wall -Wextra -pedantic and either Boost-1.44 or 1.43, do you have a minimal test case?
It also looks to me that maybe BOOST_NO_INCLASS_MEMBER_INITIALIZATION is defined given that the warning talks about enum's - however this should never be the case with gcc.
These warnings appear by just including lexical_cast.hpp (see below). Any ideas where the warnings come from? Tomorrow I'll try to use another gcc version and/or another boost version. Regards James [james@build-amd64-81 ~]$ cat warnings.cpp #include <boost/lexical_cast.hpp> int main() { } [james@build-amd64-81 ~]$ c++ -I/usr/local/include warnings.cpp In file included from warnings.cpp:1: /usr/local/include/boost/type_traits/is_unsigned.hpp: In instantiation of 'boost::detail::is_ununsigned_helper<short int>': /usr/local/include/boost/type_traits/is_unsigned.hpp:73: instantiated from 'boost::detail::is_unsigned_imp<short int>' /usr/local/include/boost/type_traits/is_unsigned.hpp:123: instantiated from 'boost::is_unsigned<short int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:110: instantiated from 'boost::detail::make_unsigned_imp<short int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:130: instantiated from 'boost::make_unsigned<short int>' /usr/local/include/boost/lexical_cast.hpp:846: instantiated from here /usr/local/include/boost/type_traits/is_unsigned.hpp:40: warning: comparison between 'enum boost::detail::is_unsigned_values<short int>::<anonymous>' and 'enum boost::detail::is_unsigned_values<short int>::<anonymous>' /usr/local/include/boost/type_traits/is_unsigned.hpp: In instantiation of 'boost::detail::is_ununsigned_helper<int>': /usr/local/include/boost/type_traits/is_unsigned.hpp:73: instantiated from 'boost::detail::is_unsigned_imp<int>' /usr/local/include/boost/type_traits/is_unsigned.hpp:123: instantiated from 'boost::is_unsigned<int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:110: instantiated from 'boost::detail::make_unsigned_imp<int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:130: instantiated from 'boost::make_unsigned<int>' /usr/local/include/boost/lexical_cast.hpp:860: instantiated from here /usr/local/include/boost/type_traits/is_unsigned.hpp:40: warning: comparison between 'enum boost::detail::is_unsigned_values<int>::<anonymous>' and 'enum boost::detail::is_unsigned_values<int>::<anonymous>' /usr/local/include/boost/type_traits/is_unsigned.hpp: In instantiation of 'boost::detail::is_ununsigned_helper<long int>': /usr/local/include/boost/type_traits/is_unsigned.hpp:73: instantiated from 'boost::detail::is_unsigned_imp<long int>' /usr/local/include/boost/type_traits/is_unsigned.hpp:123: instantiated from 'boost::is_unsigned<long int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:110: instantiated from 'boost::detail::make_unsigned_imp<long int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:130: instantiated from 'boost::make_unsigned<long int>' /usr/local/include/boost/lexical_cast.hpp:874: instantiated from here /usr/local/include/boost/type_traits/is_unsigned.hpp:40: warning: comparison between 'enum boost::detail::is_unsigned_values<long int>::<anonymous>' and 'enum boost::detail::is_unsigned_values<long int>::<anonymous>' /usr/local/include/boost/type_traits/is_unsigned.hpp: In instantiation of 'boost::detail::is_ununsigned_helper<long long int>': /usr/local/include/boost/type_traits/is_unsigned.hpp:73: instantiated from 'boost::detail::is_unsigned_imp<long long int>' /usr/local/include/boost/type_traits/is_unsigned.hpp:123: instantiated from 'boost::is_unsigned<long long int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:110: instantiated from 'boost::detail::make_unsigned_imp<long long int>' /usr/local/include/boost/type_traits/make_unsigned.hpp:130: instantiated from 'boost::make_unsigned<long long int>' /usr/local/include/boost/lexical_cast.hpp:889: instantiated from here /usr/local/include/boost/type_traits/is_unsigned.hpp:40: warning: comparison between 'enum boost::detail::is_unsigned_values<long long int>::<anonymous>' and 'enum boost::detail::is_unsigned_values<long long int>::<anonymous>'