Boost 1.73, beast and -fconcepts

From: David P. Riedel (driedel_at_[hidden])
Date: 2020-05-02 13:31:16

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