Author
anonymous
about 7 years ago
Language
C++
Compiler
gcc 7.2.0
Options
Optimization
Boost 1.66.0
C++1z(GNU)
no pedantic
Raw runtime options
1
Author
anonymous
about 7 years ago
$ g++ prog.cc -O2 -march=native -I/opt/wandbox/boost-1.66.0/gcc-7.2.0/include -std=gnu++1z prog.cc: In function 'int main()':
prog.cc:7:9: error: no match for 'operator=' (operand types are 'boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >' and 'const char [14]')
x = "worked before";
^~~~~~~~~~~~~~~
In file included from /opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant.hpp:17:0,
from prog.cc:1:
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2187:13: note: candidate: template<class T> typename boost::enable_if<boost::mpl::and_<boost::is_rvalue_reference<T&&>, boost::mpl::not_<boost::is_const<T> >, boost::detail::variant::is_variant_constructible_from<T&&, typename boost::mpl::transform<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, boost::mpl::transform<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_sequence_based_, typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, T0_, boost::mpl::identity<T> >::type, boost::detail::variant::make_variant_list<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, T0_, boost::mpl::identity<T> >::type, TN ...> >::type, boost::mpl::protect<boost::detail::variant::quoted_enable_recursive<boost::variant<T0, TN> > > >, boost::mpl::identity<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_sequence_based_, typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, T0_, boost::mpl::identity<T> >::type, boost::detail::variant::make_variant_list<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, T0_, boost::mpl::identity<T> >::type, TN ...> >::type> >::type, boost::mpl::protect<boost::detail::make_reference_content<mpl_::void_> > >::type> >, boost::variant<T0, TN>&>::type boost::variant<T0, TN>::operator=(T&&) [with T = T; T0_ = int; TN = {boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >}]
>::type operator=(T&& rhs)
^~~~~~~~
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2187:13: note: template argument deduction/substitution failed:
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp: In substitution of 'template<class T> typename boost::enable_if<boost::mpl::and_<boost::is_rvalue_reference<T&&>, boost::mpl::not_<boost::is_const<T> >, boost::detail::variant::is_variant_constructible_from<T&&, boost::mpl::l_item<mpl_::long_<2>, int, boost::mpl::l_item<mpl_::long_<1>, boost::recursive_wrapper<std::__cxx11::basic_string<char> >, boost::mpl::l_end> > >, mpl_::bool_<true>, mpl_::bool_<true> >, boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&>::type boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::operator=<T>(T&&) [with T = const char (&)[14]]':
prog.cc:7:9: required from here
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2187:13: error: no type named 'type' in 'struct boost::enable_if<boost::mpl::and_<boost::is_rvalue_reference<const char (&)[14]>, boost::mpl::not_<boost::is_const<const char (&)[14]> >, boost::detail::variant::is_variant_constructible_from<const char (&)[14], boost::mpl::l_item<mpl_::long_<2>, int, boost::mpl::l_item<mpl_::long_<1>, boost::recursive_wrapper<std::__cxx11::basic_string<char> >, boost::mpl::l_end> > >, mpl_::bool_<true>, mpl_::bool_<true> >, boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&>'
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2201:13: note: candidate: template<class T> typename boost::enable_if<boost::mpl::or_<boost::is_same<T, boost::variant<T0, TN> >, boost::detail::variant::is_variant_constructible_from<const T&, typename boost::mpl::transform<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, boost::mpl::transform<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_sequence_based_, typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, T0_, boost::mpl::identity<T> >::type, boost::detail::variant::make_variant_list<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, T0_, boost::mpl::identity<T> >::type, TN ...> >::type, boost::mpl::protect<boost::detail::variant::quoted_enable_recursive<boost::variant<T0, TN> > > >, boost::mpl::identity<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_sequence_based_, typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, T0_, boost::mpl::identity<T> >::type, boost::detail::variant::make_variant_list<typename boost::mpl::eval_if<boost::variant<T0, TN>::is_recursive_, T0_, boost::mpl::identity<T> >::type, TN ...> >::type> >::type, boost::mpl::protect<boost::detail::make_reference_content<mpl_::void_> > >::type> >, boost::variant<T0, TN>&>::type boost::variant<T0, TN>::operator=(const T&) [with T = T; T0_ = int; TN = {boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >}]
>::type operator=(const T& rhs)
^~~~~~~~
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2201:13: note: template argument deduction/substitution failed:
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp: In substitution of 'template<class T> typename boost::enable_if<boost::mpl::or_<boost::is_same<T, boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::detail::variant::is_variant_constructible_from<const T&, boost::mpl::l_item<mpl_::long_<2>, int, boost::mpl::l_item<mpl_::long_<1>, boost::recursive_wrapper<std::__cxx11::basic_string<char> >, boost::mpl::l_end> > >, mpl_::bool_<false>, mpl_::bool_<false>, mpl_::bool_<false> >, boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&>::type boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >::operator=<T>(const T&) [with T = char [14]]':
prog.cc:7:9: required from here
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2201:13: error: no type named 'type' in 'struct boost::enable_if<boost::mpl::or_<boost::is_same<char [14], boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::detail::variant::is_variant_constructible_from<const char (&)[14], boost::mpl::l_item<mpl_::long_<2>, int, boost::mpl::l_item<mpl_::long_<1>, boost::recursive_wrapper<std::__cxx11::basic_string<char> >, boost::mpl::l_end> > >, mpl_::bool_<false>, mpl_::bool_<false>, mpl_::bool_<false> >, boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&>'
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2208:14: note: candidate: boost::variant<T0, TN>& boost::variant<T0, TN>::operator=(const boost::variant<T0, TN>&) [with T0_ = int; TN = {boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >}]
variant& operator=(const variant& rhs)
^~~~~~~~
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2208:14: note: no known conversion for argument 1 from 'const char [14]' to 'const boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&'
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2215:14: note: candidate: boost::variant<T0, TN>& boost::variant<T0, TN>::operator=(boost::variant<T0, TN>&&) [with T0_ = int; TN = {boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >}]
variant& operator=(variant&& rhs)
^~~~~~~~
/opt/wandbox/boost-1.62.0/gcc-7.2.0/include/boost/variant/variant.hpp:2215:14: note: no known conversion for argument 1 from 'const char [14]' to 'boost::variant<int, boost::recursive_wrapper<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&&'
Exit Code:
1