From mbruckner94 at gmail.com  Tue Jun 15 06:17:17 2021
From: mbruckner94 at gmail.com (Marcel Bruckner)
Date: Tue Jun 15 09:12:15 2021
Subject: [xsd-users] Invalid use of incomplete type error for C++ data
 bindings for OpenDrive 1.6.1 generated with xsdcxx cxx-tree
Message-ID: <CA+UShFtDcXwcujNAJxUpgEr5Tx=UYMyujMi8JHEsLxeDcvU6Ww@mail.gmail.com>

Dear CodeSynthesis Team,

I have downloaded and extracted the OpenDrive V1.6.1 standard (
https://www.asam.net/standards/detail/opendrive/) that provides multiple
xsd files (The xsd schema is attached to recreate the situation).

I have generated data bindings using:







*xsdcxx cxx-tree --std c++11 \  --reserved-name access=parkingSpace_access
\  --reserved-name link=lane_link \  --reserved-name signal=signals_signal
\  --reserved-name container=road_container \  --generate-serialization
--generate-polymorphic \  --root-element-all \  *.xsd*

When I compile the resulting .hxx and .cxx files using:
*c++ -I.../libxsd -c *.cxx*

I get the following error:

*opendrive_16_junction.hxx:644:74: error: invalid use of incomplete type
?class simulation::standard::opendrive_schema::_OpenDriveElement?  644 |
    class t_junction: public
::simulation::standard::opendrive_schema::_OpenDriveElement*

And the following warning:

*opendrive_16_core.hxx:274:13: note: forward declaration of ?class
simulation::standard::opendrive_schema::_OpenDriveElement?  274 |
class _OpenDriveElement;*

The error and warning is repeated for every occurence of *_OpenDriveElement*
in all files.

It happens on:

   - Ubuntu 20.04.2 LTS
   - CodeSynthesis XSD XML Schema to C++ compiler 4.0.0
   - c++ (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0
   - zsh 5.8 (x86_64-ubuntu-linux-gnu) / GNU bash, version
   5.0.17(1)-release (x86_64-pc-linux-gnu)


This prevents me from compiling the generated .hxx and .cxx files and I
cannot use them to parse some maps I need for research.


Best regards,

Marcel Bruckner
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From boris at codesynthesis.com  Wed Jun 16 07:38:47 2021
From: boris at codesynthesis.com (Boris Kolpackov)
Date: Wed Jun 16 07:38:04 2021
Subject: [xsd-users] Invalid use of incomplete type error for C++ data
	bindings for OpenDrive 1.6.1 generated with xsdcxx cxx-tree
In-Reply-To: <CA+UShFtDcXwcujNAJxUpgEr5Tx=UYMyujMi8JHEsLxeDcvU6Ww@mail.gmail.com>
References: <CA+UShFtDcXwcujNAJxUpgEr5Tx=UYMyujMi8JHEsLxeDcvU6Ww@mail.gmail.com>
Message-ID: <boris.20210616133432@codesynthesis.com>

Marcel Bruckner <mbruckner94@gmail.com> writes:

> opendrive_16_junction.hxx:644:74: error: invalid use of incomplete type
> ?class simulation::standard::opendrive_schema::_OpenDriveElement?  644 |
>     class t_junction: public
> ::simulation::standard::opendrive_schema::_OpenDriveElement

This most likely means that the schema has cycles that involve
inheritance and as a result can only be compiled in the
--file-per-type mode. For background/details, see:

http://www.codesynthesis.com/~boris/blog/2008/02/13/codesynthesis-xsd-3-1-0-released/

From mdorier at anl.gov  Tue Jun 22 12:37:03 2021
From: mdorier at anl.gov (Dorier, Matthieu)
Date: Tue Jun 22 12:59:00 2021
Subject: [xsd-users] XSD fails to build with gcc 10.3.0
Message-ID: <6E15B96A-B600-4C1C-AE2D-0A53D8ED4CBE@anl.gov>

Hi,

I was trying to build XSD on my Ubuntu machine with gcc 10.3.0 and it eventually fails with the following error:

/projects/xsd-4.0.0+dep/libxsd-frontend/xsd-frontend/semantic-graph/elements.cxx: In function ?std::wostream& operator<<(std::wostream&, const Path&)?:
/projects/xsd-4.0.0+dep/libxsd-frontend/xsd-frontend/semantic-graph/elements.cxx:298:13: error: no match for ?operator<<? (operand types are ?std::wostream? {aka ?std::basic_ostream<wchar_t>?} and ?cutl::fs::basic_path<char>::string_type? {aka ?std::__cxx11::basic_string<char>?})
  298 |   return os << path.string ();
      |          ~~ ^~ ~~~~~~~~~~~~~~
      |          |                 |
      |          |                 cutl::fs::basic_path<char>::string_type {aka std::__cxx11::basic_string<char>}
      |          std::wostream {aka std::basic_ostream<wchar_t>}

It seems to build fine on another machine with gcc 9.3.0.

Thanks,

Matthieu
From boris at codesynthesis.com  Wed Jun 23 09:44:57 2021
From: boris at codesynthesis.com (Boris Kolpackov)
Date: Wed Jun 23 09:44:08 2021
Subject: [xsd-users] XSD fails to build with gcc 10.3.0
In-Reply-To: <6E15B96A-B600-4C1C-AE2D-0A53D8ED4CBE@anl.gov>
References: <6E15B96A-B600-4C1C-AE2D-0A53D8ED4CBE@anl.gov>
Message-ID: <boris.20210623154153@codesynthesis.com>

Dorier, Matthieu <mdorier@anl.gov> writes:

> I was trying to build XSD on my Ubuntu machine with gcc 10.3.0 and it
> eventually fails with the following error:
> 
> /projects/xsd-4.0.0+dep/libxsd-frontend/xsd-frontend/semantic-graph/elements.cxx: In function ?std::wostream& operator<<(std::wostream&, const Path&)?:
> /projects/xsd-4.0.0+dep/libxsd-frontend/xsd-frontend/semantic-graph/elements.cxx:298:13: error: no match for ?operator<<? (operand types are ?std::wostream? {aka ?std::basic_ostream<wchar_t>?} and ?cutl::fs::basic_path<char>::string_type? {aka ?std::__cxx11::basic_string<char>?})
>   298 |   return os << path.string ();
>       |          ~~ ^~ ~~~~~~~~~~~~~~
>       |          |                 |
>       |          |                 cutl::fs::basic_path<char>::string_type {aka std::__cxx11::basic_string<char>}
>       |          std::wostream {aka std::basic_ostream<wchar_t>}
> 
> It seems to build fine on another machine with gcc 9.3.0.

I believe this is the fix for this issue:

https://git.codesynthesis.com/cgit/libxsd-frontend/libxsd-frontend/commit/?id=5029f8665190879285787a9dcdaf5f997cadd2e2

The easiest is probably to apply this (trivial) patch to the
version you are already using. Alternatively (and if you are
feeling adventurous) I can give you instructions on building
the latest master with build2.