id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10488	Compilation of serializing shared_ptr<const Object> fails	visa.jokelainen@…	Robert Ramey	"Compilation of code that includes serialization of shared_ptr<const Object> fails with Boost 1.56.0 with error:

{{{
/usr/include/boost/smart_ptr/shared_ptr.hpp:323:25: note:   no known conversion for argument 1 from ‘const boost::shared_ptr<const TestClass>’ to ‘const boost::shared_ptr<void>&’
}}}

This works with Boost 1.55.0 and earlier versions. 
Tested on Arch Linux with clang 3.4.2 and g++ 4.9.1.

Here's a little test to replicate the problem:

{{{
#include <fstream>

#include <boost/archive/text_iarchive.hpp>
#include <boost/serialization/shared_ptr.hpp>

#include <boost/make_shared.hpp>


class TestClass
{
public:

    TestClass(int i) : _i(i) {}
    
private:
    
    friend class boost::serialization::access;

    TestClass() {}

    template<class Archive>
    void serialize(Archive & ar, const unsigned int version)
    { 
        ar & _i;
    }

    int _i;
};

typedef boost::shared_ptr<TestClass> ClassPtr;
typedef boost::shared_ptr<const TestClass> ConstClassPtr;

int main(int argc, char* argv[])
{    
    ClassPtr ptr = boost::make_shared<TestClass>(13);
    ConstClassPtr cPtr = boost::make_shared<const TestClass>(42);

    {
        std::ifstream ifs(""test"");
        boost::archive::text_iarchive ia(ifs);

        ia >> ptr; // This works
        
        ia >> cPtr; // This doesn't
    }
    
    return 0;
}
}}}
"	Bugs	closed	To Be Determined	serialization	Boost 1.56.0	Regression	fixed	shared_ptr serialization const compilation	boost@… mika.fischer@…