Thread: maps in Visual Studio 6.0

Hello,

I want to use maps in Visual Studio 6.0. However, declaring

Code:

	map<char *, int> asdf;

Gives many warnings:

Code:

c:\program files\microsoft visual studio\vc98\include\xtree(200) : warning C4786: '?rbegin@?$_Tree@PADU?$pair@QADH@std@@U_Kfn@?$map@PADHU?$less@PAD@std@@V?$allocator@H@2@@2@U?$less@PAD@2@V?$allocator@H@2@@std@@QAE?AV?$reverse_bidirectional_iterator@
Viterator@?$_Tree@PADU?$pair@QADH@std@@U_Kfn@?$map@PADHU?$less@PAD@std@@V?$allocator@H@2@@2@U?$less@PAD@2@V?$allocator@H@2@@std@@U?$pair@QADH@3@AAU43@PAU43@H@2@XZ' : identifier was truncated to '255' characters in the browser information
        c:\program files\microsoft visual studio\vc98\include\map(46) : see reference to class template instantiation 'std::_Tree<char *,struct std::pair<char * const,int>,struct std::map<char *,int,struct std::less<char *>,class std::allocator<int>
 >::_Kfn,struct std::less<char *>,class std::allocator<int> >' being compiled

c:\mydir\myprog.cpp(187) : warning C4786: 'std::reverse_bidirectional_iterator<std::_Tree<char *,std::pair<char * const,int>,std::map<char *,int,std::less<char *>,std::allocator<int> >::_Kfn,std::less<char *>,std::allocator<int> >:
:const_iterator,std::pair<char * const,int>,std::pair<char * const,int> const &,std::pair<char * const,int> const *,int>' : identifier was truncated to '255' characters in the debug information

How can I avoid these warnings? Or is this a compiler limitation? They get in the way of other warnings/errors I have.

Thanks.

Those warnings are common in VC++ 6.0. You can ignore them. To stop them from being shown, you can use #pragma warning(disable: 4786) at the top of your file, or at the top of the VC++ include file itself. If you search for C4786 you'll find a lot of information on it.

BTW, you should be careful of using char* in a map. The C++ string class might be a better choice depending on what you are trying to do.

Thanks for the fast response.
That doesn't seem to work. I still get the C4786 warnings. Is there something else I need to have?

I want to add that I only get those warnings, where as before, I was getting a sargasso of repeated warnings.

I just edited the files that actually gave the warnings and add the pragma to the pragmas at the top of the files. I think you might have to save the file, then close down MSDev before re-compiling, but I'm not sure. The fact that there are fewer warnings means you are getting closer at least.

As predlude said, MSVC++6.0 is quite dated now. If you got your hands on a more up to date compiler you may rid yourself of the warnings. Try DevC++4.992 or code::blocks IDE

If you want to stick with Mictorsoft, they are handing out MSVC++2005 express edition for free download from their site, it may be a big advantage to you later on to have a more standard compilant compiler - if not, you will run into more errors as you go along