[odb-users] lazy_shared_ptr compilation issue

[Konstantin Tarovik]

Hi all,

I have the following issue with lazy_shared_ptr. In one of my persistent 
objects there is a field:
     odb::lazy_shared_ptr<Contact>  _sender;

It compiles both with ODB compiler and C++ without issues until I call 
_sender.load(). When I add this call I get the following error when 
compiling my project with C++:

        In file included from
        external/storage/odb/ios/include/odb/lazy-ptr.hxx:668:
        external/storage/odb/ios/include/odb/lazy-ptr.ixx:1153:10:
        error: no viable overloaded '='
               p_ = i_.template load<T> (true); // Reset id.
               ~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~
        /Users/user/Documents/Work/core/src/db/message_imp.cpp:56:21:
        note: in instantiation of member function
        'odb::lazy_shared_ptr<rc::core::Contact>::load' requested here
              return _sender.load();
                             ^
        In file included from
        /Users/user/Documents/Work/core/src/db/message_imp.cpp:9:
        In file included from
        /Users/user/Documents/Work/core/src/db/message_imp.hpp:11:
        In file included from core/src/db/message.hpp:11:
        In file included from
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/string:439:
        In file included from
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/algorithm:628:
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/memory:3841:17:
        note: candidate function not viable: no known conversion from
        'typename object_traits<Contact>::pointer_type' (aka
        'rc::core::Contact *') to 'const
        std::__1::shared_ptr<rc::core::Contact>' for 1st argument
             shared_ptr& operator=(const shared_ptr& __r) _NOEXCEPT;
                         ^
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/memory:3850:17:
        note: candidate function not viable: no known conversion from
        'typename object_traits<Contact>::pointer_type' (aka
        'rc::core::Contact *') to
        'std::__1::shared_ptr<rc::core::Contact>' for 1st argument
             shared_ptr& operator=(shared_ptr&& __r) _NOEXCEPT;
                         ^
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/memory:3848:9:
        note: candidate template ignored: could not match
        'shared_ptr<type-parameter-0-0>' against 'rc::core::Contact *'
                 operator=(const shared_ptr<_Yp>& __r) _NOEXCEPT;
                 ^
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/memory:3857:9:
        note: candidate template ignored: could not match
        'shared_ptr<type-parameter-0-0>' against 'rc::core::Contact *'
                 operator=(shared_ptr<_Yp>&& __r);
                 ^
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/memory:3865:9:
        note: candidate template ignored: could not match
        'auto_ptr<type-parameter-0-0>' against 'rc::core::Contact *'
                 operator=(auto_ptr<_Yp>&& __r);
                 ^
        /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/memory:3884:9:
        note: candidate template ignored: could not match
        'unique_ptr<type-parameter-0-0, type-parameter-0-1>' against
        'rc::core::Contact *'
                 operator=(unique_ptr<_Yp, _Dp>&& __r);
                 ^
        1 error generated.



Am I doing something wrong?

Thank you.

Best regards,
Konstantin Tarovik