Hello list, I recently updated to boost 1.58 and one of my programs didn't compile any more. The reason was the <boost/variant/get.hpp> header. A simple test program and compiler output is attached below. Swapping the order of the includes or including <boost/type_traits/remove_cv.hpp> before <boost/variant/get.hpp> in the test program will get rid of the errors. It would appear that <boost/variant/detail/element_index.hpp> should include <boost/type_traits/remove_cv.hpp>. Kind regards, Maarten de Vries Test program: #include <boost/variant/get.hpp>
#include <boost/variant/variant.hpp>
int main() { return 0; }
Compiler output g++ (GCC) 4.9.2 20150304 (prerelease): In file included from /usr/include/boost/variant/get.hpp:24:0,
from test.cpp:1: /usr/include/boost/variant/detail/element_index.hpp:38:69: error: ‘remove_cv’ in namespace ‘boost’ does not name a template type variant_element_functor<boost::mpl::_1, typename boost::remove_cv<T>::type > ^ /usr/include/boost/variant/detail/element_index.hpp:38:78: error: expected template-argument before ‘<’ token variant_element_functor<boost::mpl::_1, typename boost::remove_cv<T>::type >
^ /usr/include/boost/variant/detail/element_index.hpp:38:78: error: expected ‘>’ before ‘<’ token /usr/include/boost/variant/detail/element_index.hpp:38:88: error: template argument 2 is invalid variant_element_functor<boost::mpl::_1, typename boost::remove_cv<T>::type >
^ /usr/include/boost/variant/detail/element_index.hpp:39:9: error: expected ‘::’ before ‘>’ token > ^ /usr/include/boost/variant/detail/element_index.hpp:39:9: error: expected identifier before ‘>’ token /usr/include/boost/variant/detail/element_index.hpp:39:9: error: template argument 2 is invalid /usr/include/boost/variant/detail/element_index.hpp:40:5: error: expected ‘::’ before ‘>’ token > ^ /usr/include/boost/variant/detail/element_index.hpp:40:5: error: expected identifier before ‘>’ token /usr/include/boost/variant/detail/element_index.hpp:40:5: error: template argument 2 is invalid /usr/include/boost/variant/detail/element_index.hpp:41:1: error: expected ‘::’ before ‘{’ token {}; ^ /usr/include/boost/variant/detail/element_index.hpp:41:1: error: expected class-name before ‘{’ token