Re: fusion vector, spirit, phoenix actor and forwarding constructor

On 14 July 2016 at 02:23, Lee Clagett <[email protected]> wrote:
> On Tue, 12 Jul 2016 20:49:31 +0100 MM <[email protected]> wrote:
>> Hello,
>>
>> In this user constructor for struct store in
>> /usr/include/boost/fusion/container/vector/vector.hpp:175:44
>>
>>             template <typename U>
>>             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
>>             store(U&& rhs
>>                 , typename disable_if<is_same<typename pure<U>::type,
>> store>, detail::enabler_>::type = detail::enabler)
>>                 : elem(std::forward<U>(rhs))
>> <= error is here
>>             {}
>>
>> type of rhs is:
>>    const boost::phoenix::actor<boost::spirit::attribute<1> >&
>>
>> the compiler meets this error:
>>
>> no matching function for call to
>> ‘boost::phoenix::actor<boost::spirit::attribute<1> >::actor(const
>> boost::spirit::attribute<1>&)’
>>
>> candidates are the default ctor,
>> 1) constexpr boost::phoenix::actor<boost::spirit::attribute<1>
>> >::actor()
>>
>> and the copy constructor
>> 2) constexpr boost::phoenix::actor<boost::spirit::attribute<1>
>> >::actor(const boost::phoenix::actor<boost::spirit::attribute<1> >&)
>>
>> This seems to be a problem only for >=c++11, also, it was ok with
>> 1.58, but not now with develop.
>>
>> I haven't managed to extract a small reproducible case yet, and but
>> i'll keep trying.
>>
>> Thanks,
>>
>> MM
>>

All compiled with g++6 c++11
> Does it work with Boost 1.61?
It hasn't work with vanilla boost 1.60 from my distro

> or the master branch?

> Or is it only broken on the develop branch?
It is broker in develop branch, but I am guilty of mix and match, so
apologies for that,
I only took  boost 1.60 vanilla, and replaced phoenix spirit and fusion as
links to the develop branch.
I will try again with entire boost develop, then with entire boost master.
Should I try with 1.61 vanilla as well?

I suppose I'd need to clone the entire boost repo, then switch branches
between master and develop

is that git clone https://github.com/boostorg/boost.git

for now I only have clones of fusion phoenix and spirit.

While trying to make a smaller case, I've ran into I suppose a separate
problem (likely unrelated) here:

https://stackoverflow.com/questions/38372392/boost-phoenix-eval-failures

The line closest to my real-code line that triggers the error above is:

start_ %= g2_(_r1);

Lee, here is a more complete stack that gets triggered from my real code:

startrule %= start(_r1);
qis::rule<Iterator, T*(T*), qis::blank_type> startrule;
qis::rule<Iterator, T*(T*), qis::locals<X*>, qis::blank_type> start;
/// where T and X are my application types.
The error stack is here:

http://paste.fedoraproject.org/391037/46849462
http://paste.fedoraproject.org/391037/46849462
Lee, let me know what to test please? Thanks


MM

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