Re: [Boost-users] [context/coroutine] DLL link errors in VS2015

Subject: Re: [Boost-users] [context/coroutine] DLL link errors in VS2015
From: Gavin Lambert (gavinl_at_[hidden])
Date: 2017-02-24 06:19:22

On 24/02/2017 14:20, I wrote:
> On 23/02/2017 14:18, I wrote:
>> On 22/02/2017 21:05, Oliver Kowalke wrote:
>>> At the moment I've no Windows system to test it, but the error might be
>>> caused by a missing export statement.
>>>
>>> In execution_context_v1.hpp change the code to:
>>>
>>> struct BOOST_CONTEXT_DECL activation_record ...
>>> struct BOOST_CONTEXT_DECL activation_record_initializer ...
>>
>> Boost 1.60 doesn't have that file.  But making those changes in
>> execution_context.ipp causes the errors mentioned in
>> https://svn.boost.org/trac/boost/ticket/11365 ie. being incompatible
>> with thread_local (thread locals need to be behind a pimpl wall; they
>> can't be exported directly).
>>
>> I'm about to try updating to 1.63 anyway, so we'll see how that goes, I
>> guess.
>
> Good news: looks like this isn't an issue any more with Boost 1.63.  My
> apologies for the noise.

Although now I have a related-but-different problem.

        typedef boost::coroutines2::coroutine<void>::push_type coroutine;

         std::vector<coroutine> coros;
         coros.emplace_back(std::bind(std::forward<F>(f), i, 
std::placeholders::_1));
         // where f is a template functor&& and i is a template iterator

This code compiles fine in:
   - VS2013 (Windows, Boost 1.55, coroutines1)
   - VS2015 (Windows, Boost 1.55, coroutines1)
   - GCC 4.8.2 (Linux, Boost 1.55, coroutines1)
   - VS2015 (Windows, Boost 1.63, coroutines1 & coroutines2)
   - GCC 4.8.2 (Linux, Boost 1.63, coroutines1)

But using GCC with Boost 1.63 and coroutines2 I get some quite verbose 
errors that I'm having trouble making sense of.  (Clang 3.4 gives a 
similar error.)  Is this a bug or am I doing something weird?

/mnt/ThirdParty/boost/boost_1_63_0/include/boost/context/execution_context_v2_void.ipp:55:99: 
error: no matching function for call to 
'apply(std::decay<std::_Bind<boost::coroutines2::detail::push_coroutine<void>::control_block::control_block(boost::context::preallocated, 
StackAllocator, Fn&&) [with StackAllocator = 
boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn 
= 
std::_Bind<{anonymous}::Test::Method()::__lambda8(std::reference_wrapper<std::pair<const 
{anonymous}::Address, std::vector<{anonymous}::Data> > >, 
std::_Placeholder<1>)>]::__lambda7(std::_Bind<{anonymous}::Test::Method()::__lambda8(std::reference_wrapper<std::pair<const 
{anonymous}::Address, std::vector<{anonymous}::Data> > >, 
std::_Placeholder<1>)>, std::_Placeholder<1>)> >::type&, 
std::__tuple_cat_result<std::tuple<>&, 
std::tuple<boost::context::execution_context<void>&&> >::__type)'
          Ctx cc = apply( fn_, std::tuple_cat( params_, 
std::forward_as_tuple( std::move( from) ) ) );

 
                            ^
/mnt/ThirdParty/boost/boost_1_63_0/include/boost/context/execution_context_v2_void.ipp:55:99: 
note: candidate is:
/mnt/ThirdParty/boost/boost_1_63_0/include/boost/context/detail/apply.hpp:54:1: 
note: template<class Fn, class Tpl> decltype 
(boost::context::detail::apply_impl(forward<Fn>(fn), forward<Tpl>(tpl), 
boost::context::detail::make_index_sequence<std::tuple_size<typename 
std::decay<_Tp2>::type>::value>{})) boost::context::detail::apply(Fn&&, 
Tpl&&)
  apply( Fn && fn, Tpl && tpl)

  ^
/mnt/ThirdParty/boost/boost_1_63_0/include/boost/context/detail/apply.hpp:54:1: 
note:   template argument deduction/substitution failed:
/mnt/ThirdParty/boost/boost_1_63_0/include/boost/context/detail/apply.hpp: 
In substitution of 'template<class Fn, class Tpl> decltype 
(boost::context::detail::apply_impl(forward<Fn>(fn), forward<Tpl>(tpl), 
boost::context::detail::make_index_sequence<std::tuple_size<typename 
std::decay<_Tp2>::type>::value>{})) boost::context::detail::apply(Fn&&, 
Tpl&&) [with Fn = 
std::_Bind<boost::coroutines2::detail::push_coroutine<void>::control_block::control_block(boost::context::preallocated, 
StackAllocator, Fn&&) [with StackAllocator = 
boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn 
= 
std::_Bind<{anonymous}::Test::Method()::__lambda8(std::reference_wrapper<std::pair<const 
{anonymous}::Address, std::vector<{anonymous}::Data> > >, 
std::_Placeholder<1>)>]::__lambda7(std::_Bind<{anonymous}::Test::Method()::__lambda8(std::reference_wrapper<std::pair<const 
{anonymous}::Address, std::vector<{anonymous}::Data> > >, 
std::_Placeholder<1>)>, std::_Placeholder<1>)>&; Tpl = 
std::tuple<boost::context::execution_context<void>&&>]':
/mnt/ThirdParty/boost/boost_1_63_0/include/boost/context/execution_context_v2_void.ipp:55:99: 
   required from 'boost::context::detail::transfer_t 
boost::context::detail::record_void<Ctx, StackAlloc, Fn, 
Params>::run(boost::context::detail::transfer_t) [with Ctx = 
boost::context::execution_context<void>; StackAlloc = 
boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn 
= 
std::_Bind<boost::coroutines2::detail::push_coroutine<void>::control_block::control_block(boost::context::preallocated, 
StackAllocator, Fn&&) [with StackAllocator = 
boost::context::basic_fixedsize_stack<boost::context::stack_traits>; Fn 
= 
std::_Bind<{anonymous}::Test::Method()::__lambda8(std::reference_wrapper<std::pair<const 
{anonymous}::Address, std::vector<{anonymous}::Data> > >, 
std::_Placeholder<1>)>]::__lambda7(std::_Bind<{anonymous}::Test::Method()::__lambda8(std::reference_wrapper<std::pair<const 
{anonymous}::Address, std::vector<{anonymous}::Data> > >, 
std::_Placeholder<1>)>, std::_Placeholder<1>)>; Params = {}]'