Re: [Boost-bugs] [Boost C++ Libraries] #11267: Nested boost::fusion::make_list fails to compile under boost 1.58.0

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #11267: Nested boost::fusion::make_list fails to compile under boost 1.58.0
From: Kohei Takahashi (flast_at_[hidden])
Date: 2015-05-05 06:29:34

Hi Damien and Joel,

>> clang++ --std=c++11 -DBOOST_CONSTEXPR=
boostFusion_ticket11267_nestedMakeList.cpp -I ~/workspace/boost/
Try -DBOOST_NO_CXX11_CONSTEXPR instead -DBOOST_CONSTEXPR= (it always
overwritten by Boost.Config).

So, the issue relatives to constexpr because work with
-DBOOST_NO_CXX11_CONSTEXPR .

OK, I'll try to fix it.

Best,
Kohei

On 2015/05/05 15:11, Damien Buhl wrote:
> Hi Joel,
> 
> I looked into the container:
> 
>> clang++ --std=c++11 -DBOOST_CONSTEXPR= 
>> boostFusion_ticket11267_nestedMakeList.cpp -I ~/workspace/boost/
>>  clang++ --std=c++11 boostFusion_ticket11267_nestedMakeList.cpp
>> -I ~/workspace/boost/
> 
> And both don't compile so it is not related to any constexpr I 
> think, but I can be wrong.
> 
> What happens for me is :
>> In file included from 
>> boostFusion_ticket11267_nestedMakeList.cpp:1: In file included 
>> from 
>> /home/daminetreg/workspace/boost/boost/fusion/container/generation/make_list.hpp:16:
>>
>>
>> 
In file included from
/home/daminetreg/workspace/boost/boost/fusion/container/list/list.hpp:12:
>> In file included from 
>> /home/daminetreg/workspace/boost/boost/fusion/container/list/detail/list_to_cons.hpp:11:
>>
>>
>> 
/home/daminetreg/workspace/boost/boost/fusion/container/list/cons.hpp:69:15:
error: no viable conversion from 'const car_type' (aka 'const
boost::fusion::list<double, std::basic_string<char>,
boost::fusion::void_, boost::fusion::void_,
>> boost::fusion::void_, boost::fusion::void_,
>> boost::fusion::void_, boost::fusion::void_,
>> boost::fusion::void_, boost::fusion::void_>') to 'car_type' (aka
>> 'double') : car(rhs.car), cdr(rhs.cdr) {}
> 
> 
> Didn't you want to CC Flast also ?
> 
> I'll try to look into it this week, but Flast may know this part 
> quite better than me.
> 
> Cheers, -- Damien Buhl
> 
> On 05/05/2015 02:20, Joel de Guzman wrote:
>> Hey guys, are all these related?
>> 
>> -------- Forwarded Message -------- Subject: [Boost C++ 
>> Libraries] #11267: Nested boost::fusion::make_list fails to 
>> compile under boost 1.58.0 Date: Tue, 05 May 2015 00:16:52 -0000
>>  From: Boost C++ Libraries <noreply_at_[hidden]> CC: 
>> boost-bugs_at_[hidden]
>> 
>> #11267: Nested boost::fusion::make_list fails to compile under 
>> boost 1.58.0 
>> --------------------------------------+------------------------ 
>> Reporter:  Andrew King <eurokang@…>  |      Owner:  djowel Type: 
>> Bugs                      |     Status:  new Milestone:  To Be 
>> Determined          |  Component:  fusion Version:  Boost 1.58.0 
>> |   Severity:  Regression Keywords:                            |
>>  --------------------------------------+------------------------
>>  The following code compiles just fine under boost 1.56.0 
>> (std=c++11), but fails to compile under boost-1.58.0 with either 
>> clang++-3.6 or g++-4.9.2
>> 
>> {{{ #include <boost/fusion/container/generation/make_list.hpp> 
>> #include <boost/fusion/algorithm/iteration/for_each.hpp>
>> #include <iostream>
>> 
>> template <typename T> void Handle(const T& t);
>> 
>> template <typename ... T> void Handle(const 
>> boost::fusion::list<T...>& x);
>> 
>> struct CallFunctor { template <typename T> void operator()(const 
>> T& t) const { Handle(t); } };
>> 
>> template <typename T> void Handle(const T& t) { std::cout << t
>> << std::endl; }
>> 
>> template <typename ... T> void Handle(const 
>> boost::fusion::list<T...>& x) { boost::fusion::for_each(x, 
>> CallFunctor{}); }
>> 
>> template <typename List> void PrintList(const List& list) { 
>> boost::fusion::for_each(list, CallFunctor{}); }
>> 
>> int main() { PrintList( boost::fusion::make_list( 
>> std::string("x"), 4, 6, boost::fusion::make_list(23.0, 
>> std::string("rar"))));
>> 
>> return 0; } }}}
>> 
>> There appears to be a compile error with the use of 
>> boost::is_convertible inside boost::enable_if in 
>> boost/fusion/container/list/cons.hpp:79
>>