Re: [boost] [exception] - bug in tutorial -> member 'what' is ambiguous?
Hi, I revering to http://svn.boost.org/svn/boost/trunk/libs/exception/doc/tutorial_transportin... 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.ht... 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 Is it possible that it is out of date?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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Do you have a log with the error? To best of my knowledge, all examples (which can also be found in libs/exception/example) from the Boost Exception documentation compile without errors. Emil Dotchevski Reverge Studios, Inc. http://www.revergestudios.com/reblog/index.php?n=ReCode On Sun, Jun 29, 2008 at 11:13 PM, Kowalke Oliver (QD IT PA AS) <Oliver.Kowalke@qimonda.com> wrote:
Hi, I revering to http://svn.boost.org/svn/boost/trunk/libs/exception/doc/tutorial_transportin... 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.ht...
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
_______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
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compiler tells: /home/kowalke/Projects/odb/src/main.cpp:1330: 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 code line: catch ( my_error const& e) { std::cout << "my_error: " << e.what() << std::endl; } Oliver
From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of Emil Dotchevski Sent: Monday, June 30, 2008 8:48 AM To: boost@lists.boost.org Subject: Re: [boost] [exception] - bug in tutorial -> member 'what' is ambiguous?
Do you have a log with the error?
To best of my knowledge, all examples (which can also be found in libs/exception/example) from the Boost Exception documentation compile without errors.
Emil Dotchevski Reverge Studios, Inc. http://www.revergestudios.com/reblog/index.php?n=ReCode
On Sun, Jun 29, 2008 at 11:13 PM, Kowalke Oliver (QD IT PA AS) <Oliver.Kowalke@qimonda.com> wrote:
Hi, I revering to
http://svn.boost.org/svn/boost/trunk/libs/exception/doc/tutorial_trans
porting_data.html First example: class my_error: public
boost::exception<http://svn.boost.org/svn/boost/trunk/libs/exception/d
oc/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_d
ata.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
_______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
_______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
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I thought that you were reporting that one of the examples from the documentation doesn't compile (which they all do). I got your point though: you're saying that when you derive both boost::exception and std::exception, and you didn't override what(), you'd get ambiguity problems. Recently, I had moved the functionality which used to be handled through boost::exception::what, to a separate function, called diagnostic_information, which is a more appropriate name. I had left boost::exception::what in, for convenience (so that you can call it through a boost::exception reference.) Your post and my own experience has convinced me that it's better to get rid of boost::exception::what altogether. Now you shouldn't be getting the error (try revision 46930.) Emil Dotchevski Reverge Studios, Inc. http://www.revergestudios.com/reblog/index.php?n=ReCode On Sun, Jun 29, 2008 at 11:58 PM, Kowalke Oliver (QD IT PA AS) <Oliver.Kowalke@qimonda.com> wrote:
compiler tells:
/home/kowalke/Projects/odb/src/main.cpp:1330: 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
code line:
catch ( my_error const& e) { std::cout << "my_error: " << e.what() << std::endl; }
Oliver
From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of Emil Dotchevski Sent: Monday, June 30, 2008 8:48 AM To: boost@lists.boost.org Subject: Re: [boost] [exception] - bug in tutorial -> member 'what' is ambiguous?
Do you have a log with the error?
To best of my knowledge, all examples (which can also be found in libs/exception/example) from the Boost Exception documentation compile without errors.
Emil Dotchevski Reverge Studios, Inc. http://www.revergestudios.com/reblog/index.php?n=ReCode
On Sun, Jun 29, 2008 at 11:13 PM, Kowalke Oliver (QD IT PA AS) <Oliver.Kowalke@qimonda.com> wrote:
Hi, I revering to
http://svn.boost.org/svn/boost/trunk/libs/exception/doc/tutorial_trans
porting_data.html First example: class my_error: public
boost::exception<http://svn.boost.org/svn/boost/trunk/libs/exception/d
oc/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_d
ata.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
_______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost
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Kowalke Oliver (QD IT PA AS)