How to locate "boost::noncopyable" errors??

Question

With desperate battle with Boost.Asio, i met a lot of difficulties.

One of them is that i can hardly locate where the "boost::noncopyable errors" are!!

If i violate the noncopyable regulation accidently, IDE only shows me some errors in noncopyable.hpp or somewhere else but nowhere in my files.

I can only find errors by comment&uncomment everywhere asio object exist.

(ps: my IDE is visual c++ 2008, is this IDE has bad relationship with Boost??)

EDIT:

I know that reading the whole error message helps alot. But how about this?

1>d:\boost\include\boost-1_42\boost\asio\basic_io_object.hpp(92) : error C2248: 'boost::noncopyable_::noncopyable::noncopyable' : cannot access private member declared in class 'boost::noncopyable_::noncopyable'
1>        d:\boost\include\boost-1_42\boost\noncopyable.hpp(27) : see declaration of 'boost::noncopyable_::noncopyable::noncopyable'
1>        d:\boost\include\boost-1_42\boost\noncopyable.hpp(22) : see declaration of 'boost::noncopyable_::noncopyable'
1>        This diagnostic occurred in the compiler generated function 'boost::asio::basic_io_object<IoObjectService>::basic_io_object(const boost::asio::basic_io_object<IoObjectService> &)'
1>        with
1>        [ IoObjectService=boost::asio::stream_socket_service<boost::asio::ip::tcp>  ]

It's all caused by this

tcp::socket getSocket(){
        return m_socket;
    }

(it should be:

tcp::socket& getSocket(){
        return m_socket;
    }

)

When there are many functions in that file, can you guys quickly find it??

(ps2: perhaps all these troubles are caused by my pooooooor c++ programming experience??)

Answer 1

It seems VC++ simply won't tell you where the attempt to use the copy constructor is.

For example, G++ does:

#include <boost/asio.hpp>
using boost::asio::ip::tcp;

class X
{
    tcp::socket s;
public:
    tcp::socket get() { return s; }
};

Results in:

blah blah blah noncopyable blah blah
...
untitled1.cpp: In member function 'boost::asio::blah blah X::get()':
untitled1.cpp:8: note: synthesized method 'boost::asio::blah(const boost::asio::blah&)' first required here

On a few occasions I have just managed to compile the source with GCC to figure out VC++'s error messages (and the other way around).

Perhaps also don't write much non-working code without trying to compile it occasionally.