multi_index_container can't work with _com_ptr_t

[andrewaa59@…]

I try to use multi_index_container with _com_ptr_t objects. I can compile code with no errors, but program crashes in runtime.

Standard containers (std::map, std::set, std::vector) work perfectly with _com_ptr_t.

The sample code:

#include "stdafx.h"
#include <boost\multi_index_container.hpp>
#include <boost\multi_index\random_access_index.hpp>
#include <boost\multi_index\global_fun.hpp>
#include <boost\multi_index\ordered_index.hpp>

#import "C:\Windows\SysWOW64\msxml6.dll" exclude("ISequentialStream", "_FILETIME")

using CTest = 
  boost::multi_index_container<MSXML2::IXMLDOMDocument2Ptr, 
      boost::multi_index::indexed_by<boost::multi_index::random_access<>>>;


int main()
{
	::CoInitialize(nullptr);

	CTest tst;

	MSXML2::IXMLDOMDocumentPtr doc;
	doc.CreateInstance(CLSID_DOMDocument);

	**tst.push_back(std::move(doc));** <-- crash here

	::CoUninitialize();

  return 0;
}

[Joaquín M López Muñoz]

Hi Andrey

I think the issue is solved by these two commits:

• ​https://github.com/boostorg/utility/commit/ad0fc7c9d3d21d5ae3d594c41ed47ca71f24ca09
• ​https://github.com/boostorg/multi_index/commit/5744230acfc829914005d8be506a9320d2dc804b

Would you mind patching your local installation of Boost with these and checking whether things work now? The only part where things will still go wrong with overloaded operator& is serialization, but seems the author is working on this in parallel.

Thank you,

[anonymous]

Hi Joaquin

I'll try it as soon as possible and report about results. Thank you very much for amazingly quick fix.

[andrewaa59@…]

Hi Joaquin.

Anonym - it was me. Very strange UI here.

I've tried your fix on my sample code - it seems to be working. At Monday I'll try it on real big code.

[andrewaa59@…]

Hi Joaquin.

I've tried fix in real code - it's working. Thank you very much.