asio, beast and concepts
Hi I have been experimenting with some C++20 concepts code. Currently, I have a program which uses beast and asio to do some network file transfers. I was thinking of adding a small piece of code to my code which includes a concept. Prior to doing this, I tried building the beast tests from the 1.72 version with concepts enabled in the compiler. I got lots of errors such as the one below. beast/http/write.cpp:313:44: error: use of ‘auto boost::beast::http::async_write(AsyncWriteStream&, const boost::beast::http::message<isRequest, Body, Fields>&, WriteHandler&&, typename std::enable_if<(! boost::beast::http::is_mutable_body_writer<Body>::value)>::type*) [with AsyncWriteStream = boost::beast::test::stream; bool isRequest = false; Body = boost::beast::http::basic_string_body<char>; Fields = boost::beast::http::basic_fields<std::allocator<char> >; WriteHandler = boost::asio::basic_yield_context<boost::asio::executor_binder<void (*)(), boost::asio::executor> >; typename std::enable_if<(! boost::beast::http::is_mutable_body_writer<Body>::value)>::type = void]’ before deduction of ‘auto’ 313 | async_write(ts, m, do_yield[ec]); | ^ Are beast and asio not concepts ready? Or am I missing something? Is there some flag I need to set? My set up: boost: 1.72 gcc: 9.3 I added -std=c++2a -fconcepts to compile flags in my user-config.jam file to enable compiler concepts support. I have no problems using these compiler flags with other non-boost code. Thanks
On Mon, 23 Mar 2020 at 17:09, David P. Riedel via Boost-users < boost-users@lists.boost.org> wrote:
Hi ...
Are beast and asio not concepts ready? Or am I missing something? Is there some flag I need to set?
My set up:
boost: 1.72 gcc: 9.3
I added -std=c++2a -fconcepts to compile flags in my user-config.jam file to enable compiler concepts support.
Are these the only criteria to reproduce the problem, or is there something else I should know about the setup prior to investigating?
I have no problems using these compiler flags with other non-boost code.
Thanks
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That should do it. I changed my user-config.jam as described, changed to the test directory in libs/beast and ran b2 -a Dave On 3/23/20 12:57 PM, Richard Hodges wrote:
On Mon, 23 Mar 2020 at 17:09, David P. Riedel via Boost-users <boost-users@lists.boost.org <mailto:boost-users@lists.boost.org>> wrote:
Hi ...
Are beast and asio not concepts ready? Or am I missing something? Is there some flag I need to set?
My set up:
boost: 1.72 gcc: 9.3
I added -std=c++2a -fconcepts to compile flags in my user-config.jam file to enable compiler concepts support.
Are these the only criteria to reproduce the problem, or is there something else I should know about the setup prior to investigating?
I have no problems using these compiler flags with other non-boost code.
Thanks
_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org <mailto:Boost-users@lists.boost.org> https://lists.boost.org/mailman/listinfo.cgi/boost-users
-- Richard Hodges hodges.r@gmail.com <mailto:hodges.r@gmail.com> office: +442032898513 home: +376841522 mobile: +376380212
That should do it. I changed my user-config.jam as described, changed to the test directory in libs/beast and ran b2 -a Dave On 3/23/20 12:57 PM, Richard Hodges wrote:
On Mon, 23 Mar 2020 at 17:09, David P. Riedel via Boost-users <boost-users@lists.boost.org <mailto:boost-users@lists.boost.org>> wrote:
Hi ...
Are beast and asio not concepts ready? Or am I missing something? Is there some flag I need to set?
My set up:
boost: 1.72 gcc: 9.3
I added -std=c++2a -fconcepts to compile flags in my user-config.jam file to enable compiler concepts support.
Are these the only criteria to reproduce the problem, or is there something else I should know about the setup prior to investigating?
I have no problems using these compiler flags with other non-boost code.
Thanks
_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org <mailto:Boost-users@lists.boost.org> https://lists.boost.org/mailman/listinfo.cgi/boost-users
-- Richard Hodges hodges.r@gmail.com <mailto:hodges.r@gmail.com> office: +442032898513 home: +376841522 mobile: +376380212
On Mon, Mar 23, 2020 at 9:10 AM David P. Riedel via Boost-users <boost-users@lists.boost.org> wrote:
My set up:
Perhaps you might provide a self-contained example program which exhibits the problem here: <https://godbolt.org/z/uPrSGo> Thanks
On 3/23/20 1:24 PM, Vinnie Falco via Boost-users wrote:
On Mon, Mar 23, 2020 at 9:10 AM David P. Riedel via Boost-users <boost-users@lists.boost.org> wrote:
My set up:
Perhaps you might provide a self-contained example program which exhibits the problem here:
<https://godbolt.org/z/uPrSGo>
Thanks
I'm just building the tests from the boost distribution. No code of mine involved. libs/beast/tests
On Mon, 23 Mar 2020 at 17:24, Vinnie Falco via Boost-users <boost-users@lists.boost.org> wrote:
On Mon, Mar 23, 2020 at 9:10 AM David P. Riedel via Boost-users <boost-users@lists.boost.org> wrote:
My set up:
Perhaps you might provide a self-contained example program which exhibits the problem here:
This empty main with a recent gcc and -fconcepts is enough to trigger plenty of errors.
Thanks ! On 3/23/20 2:25 PM, Mathias Gaunard wrote:
On Mon, 23 Mar 2020 at 17:24, Vinnie Falco via Boost-users <boost-users@lists.boost.org> wrote:
On Mon, Mar 23, 2020 at 9:10 AM David P. Riedel via Boost-users <boost-users@lists.boost.org> wrote:
My set up: Perhaps you might provide a self-contained example program which exhibits the problem here:
<https://godbolt.org/z/uPrSGo> This empty main with a recent gcc and -fconcepts is enough to trigger plenty of errors.
participants (4)
-
David P. Riedel -
Mathias Gaunard -
Richard Hodges -
Vinnie Falco