boost::phoenix::bind issue in c++17.

[notebookdata]

Hi All,

I am facing these below issues when I upgrade from boost_1_73 and c++14 to boost_1_77 and c++17.
What will be the problem?
Error 1:
include/boost/utility/result_of.hpp:218:8: error: 'GB* (boost::intrusive_ptr::*)() const noexcept' is not a class, struct, or union type

Error 2:
include/boost/phoenix/core/detail/function_eval.hpp:119:21: error: no type named 'type' in 'struct boost::result_of<GB* (boost::intrusive_ptr::* const(boost::intrusive_ptr&))() const noexcept>'

Thank you.

[igaztanaga]

@mclow: intrusive_ptr belongs to the smart_ptr (https://github.com/boostorg/smart_ptr) module. Could you transfer the issue to that module (it seems that I can't do it with my permissions)?

[pdimov]

I don't think this issue has anything to do with intrusive_ptr. It's most likely caused by result_of not supporting noexcept qualified functions.

[Lastique]

Please provide a small reproducer.

[pdimov]

Something like this I suppose?

struct GB {};

auto pm = &boost::intrusive_ptr<GB>::get;
using Pm = decltype(pm);

using R = typename boost::result_of<Pm(GB*)>::type;

Works under C++14: https://godbolt.org/z/8oY5Keeao
Fails under C++17: https://godbolt.org/z/EPzzWW34b