Re: [boost] [exception] - bug in tutorial -> member 'what' is ambiguous?

From: Kowalke Oliver (QD IT PA AS) (Oliver.Kowalke_at_[hidden])
Date: 2008-06-30 02:13:10

Hi,
I revering to http://svn.boost.org/svn/boost/trunk/libs/exception/doc/tutorial_transporting_data.html
First example: class my_error: public boost::exception<http://svn.boost.org/svn/boost/trunk/libs/exception/doc/exception.html>, public std::exception { }; //(2)
This code line produces the error.
Oliver

On 6/18/08, Kowalke Oliver (QD IT PA AS) <Oliver.Kowalke <at> qimonda.com> wrote:
> Yes I used the latest documentation from trunk:
>  Tutorial: Transporting of Abritrary Data to the Catch Site:
>
>  class my_error : public boost::exception , std::exception {);
>
>  Does not work with gcc-4.2.4 (compiler bug?).

What exactly doesn't work on gcc-4.2.4?

All of the examples from the documentation are in this folder:

http://svn.boost.org/svn/boost/trunk/libs/exception/example/

The examples compile with msvc and gcc 4.3.1. I also looked at

http://svn.boost.org/svn/boost/trunk/libs/exception/doc/transporting_data.html

I don't see a reference to what() in it.

Emil Dotchevski
Reverge Studios, Inc.
http://www.revergestudios.com/reblog/index.php?n=ReCode

>  On Tue, Jun 17, 2008 at 12:09 AM, Kowalke Oliver (QD IT PA AS) <Oliver.Kowalke <at> qimonda.com> wrote:
>  > Hi,
>  > I'm using boost.exception from trunk and I get following error (gcc-4.2.4):
>  >
>  > error: request for member 'what' is ambiguous
>  > /usr/include/c++/4.2/exception:64: error: candidates are: virtual
>  > const char* std::exception::what() const
>  > /opt/boost/include/boost-1_35/boost/exception/exception.hpp:52: error:
>  > virtual const char* boost::exception::what() const
>  >
>  > I'm using the code from the boost.exception tutorial:
>  >
>  > class error
>  > :
>  > public boost::exception,
>  > public std::exception
>  > {}
>  >
>  > ...
>  > try
>  > {...}
>  > catch ( error const& e)
>  > { std::cout << "error: " << e.what() << std::endl; }
>
>  Where do you read the tutorial you are mentioning? Is it possible that it is out of date? The latest
documentation can be accessed directly through the subversion web interface:
>
>  http://svn.boost.org/svn/boost/trunk/libs/exception/doc/boost-exception.html.
>
>  Emil Dotchevski
>  Reverge Studios, Inc.
>  http://www.revergestudios.com/reblog/index.php?n=ReCode
>
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