Hi David, There was a last-minute change to Asio just before the release of boost 1.73 and we didn't catch the fact that this, while fixing Asio for gcc-9 -fconcepts, `gcc-10 -std=c++20` and `clang-10 -std=c++20`, it cause Beast to break.
I have committed a fix to boostorg/beast develop branch. Please get in touch if you need help patching your boost-1.73 sources. Either by email or on cpplang slack in the #beast channel. https://cppalliance.org/#links On Sat, 2 May 2020 at 15:31, David P. Riedel via Boost-users < boost-users@lists.boost.org> wrote: > Hi > > It seems that beast still does not work with gcc 9.3 and -fconcepts. > > If I try to build the beast test programs using -fconcepts, I still get > a lot of errors such as those below. > > I thought this was fixed in 1.73. > > ???? > > Thanks > > --------------------- > > In file included from ../../../boost/beast/core/basic_stream.hpp:1457, > from ../../../boost/beast/core.hpp:16, > from doc/core_snippets.cpp:19: > ../../../boost/beast/core/impl/basic_stream.hpp:781:1: error: no > declaration matches ‘auto boost::beast::basic_stream< > <template-parameter-1-1>, <template-parameter-1-2>, > <template-parameter-1-3> >::async_connect(const endpoint_type&, > ConnectHandler&&)’ > 781 | basic_stream<Protocol, Executor, RatePolicy>:: > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > In file included from ../../../boost/beast/core.hpp:16, > from doc/core_snippets.cpp:19: > ../../../boost/beast/core/basic_stream.hpp:1202:5: note: candidates are: > ‘template<class Protocol, class Executor, class RatePolicy> > template<class Iterator, class ConnectCondition, class > IteratorConnectHandler> requires > completion_token_for<IteratorConnectHandler, void()> typename > boost::asio::async_result<typename > std::decay<RangeConnectHandler>::type, void(boost::system::error_code, > Iterator)>::return_type boost::beast::basic_stream< > <template-parameter-1-1>, <template-parameter-1-2>, > <template-parameter-1-3> >::async_connect(Iterator, Iterator, > ConnectCondition, IteratorConnectHandler&&)’ > 1202 | async_connect( > | ^~~~~~~~~~~~~ > ../../../boost/beast/core/basic_stream.hpp:1141:5: note: > ‘template<class Protocol, class Executor, class RatePolicy> > template<class Iterator, class IteratorConnectHandler> requires > completion_token_for<IteratorConnectHandler, void()> typename > boost::asio::async_result<typename > std::decay<RangeConnectHandler>::type, void(boost::system::error_code, > Iterator)>::return_type boost::beast::basic_stream< > <template-parameter-1-1>, <template-parameter-1-2>, > <template-parameter-1-3> >::async_connect(Iterator, Iterator, IteratorCon > > > _______________________________________________ > Boost-users mailing list > Boost-users@lists.boost.org > https://lists.boost.org/mailman/listinfo.cgi/boost-users > -- Richard Hodges hodge...@gmail.com office: +442032898513 home: +376841522 mobile: +376380212
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