[Boost-bugs] [Boost C++ Libraries] #11164: Graph adjacency_list, add_vertex compile error on clang 3.6

Subject: [Boost-bugs] [Boost C++ Libraries] #11164: Graph adjacency_list, add_vertex compile error on clang 3.6
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2015-04-02 21:19:51

#11164: Graph adjacency_list, add_vertex compile error on clang 3.6
------------------------------+----------------------
 Reporter:  dstoeckel@…       |      Owner:  jewillco
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  graph
  Version:  Boost 1.57.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+----------------------
 I have an issue similar to #10382. When compiling the following program

 {{{
 #include <boost/graph/adjacency_list.hpp>

 struct Payload {
         Payload() = default;
         Payload(const Payload&) {};
         Payload& operator=(const Payload&) { return *this; };
 };

 struct PayloadD : public Payload {
 };

 class Props {
   public:
     PayloadD payload;
 };

 int main(int argc, char** argv)
 {
   using boost::adjacency_list;
   using boost::vecS;
   using boost::directedS;
   typedef adjacency_list<vecS, vecS, directedS, Props> Graph;

   Graph graph;
   boost::add_vertex(graph);

   return 0;
 }
 }}}

 Using clang 3.6 I get the error message:

 {{{
 /usr/bin/../lib64/gcc/x86_64-unknown-linux-
 gnu/4.9.2/../../../../include/c++/4.9.2/bits/stl_construct.h:75:38: error:
 call to implicitly-deleted copy constructor of
 'boost::detail::stored_edge_property<unsigned long, boost::no_property>'
     { ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...);
 }

 ...

 /usr/include/boost/graph/detail/adjacency_list.hpp:317:7: note: copy
 constructor is implicitly deleted because 'stored_edge_property<unsigned
 long, boost::no_property>' has a user-declared move constructor
       stored_edge_property(self&& x) = default;
 }}}

 The same program compiles fine with gcc 4.8.2, 4.9.2, and clang 3.5.

 The attached patch changes stored_edge_property such that it always
 creates a custom copy constructor and copy assignment operator. With this
 changes clang 3.6 can build the program.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/11164>
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