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From "Albert Strasheim (JIRA)" <j...@apache.org>
Subject [jira] Commented: (AMQCPP-176) Work around Visual Studio .NET 2003 covariant return issues
Date Sun, 25 May 2008 23:00:54 GMT

    [ https://issues.apache.org/activemq/browse/AMQCPP-176?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=43021#action_43021
] 

Albert Strasheim commented on AMQCPP-176:
-----------------------------------------

Here's an example of an error one typically sees when building with Visual Studio .NET 2003:

{noformat} 
InitDirector.cpp
..\..\activemq-cpp\src\main\activemq\connector\stomp\marshal\MarshalException.h(81) : error
C2511: 'decaf::lang::Throwable *activemq::connector::stomp::marshal::MarshalException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::marshal::MarshalException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\marshal\MarshalException.h(30)
: see declaration of 'activemq::connector::stomp::marshal::MarshalException'
..\..\activemq-cpp\src\main\activemq\connector\stomp\marshal\MarshalException.h(81) : error
C2511: 'activemq::exceptions::ActiveMQException *activemq::connector::stomp::marshal::MarshalException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::marshal::MarshalException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\marshal\MarshalException.h(30)
: see declaration of 'activemq::connector::stomp::marshal::MarshalException'
..\..\activemq-cpp\src\main\activemq\connector\stomp\marshal\MarshalException.h(81) : error
C2511: 'decaf::lang::Throwable *activemq::connector::stomp::marshal::MarshalException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::marshal::MarshalException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\marshal\MarshalException.h(30)
: see declaration of 'activemq::connector::stomp::marshal::MarshalException'
..\..\activemq-cpp\src\main\activemq\connector\stomp\marshal\MarshalException.h(81) : error
C2511: 'activemq::exceptions::ActiveMQException *activemq::connector::stomp::marshal::MarshalException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::marshal::MarshalException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\marshal\MarshalException.h(30)
: see declaration of 'activemq::connector::stomp::marshal::MarshalException'
..\..\activemq-cpp\src\main\activemq\connector\ConnectorException.h(79) : error C2511: 'decaf::lang::Throwable
*activemq::connector::ConnectorException::clone(void)' : overloaded member function not found
in 'activemq::connector::ConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\ConnectorException.h(28) : see declaration
of 'activemq::connector::ConnectorException'
..\..\activemq-cpp\src\main\activemq\connector\ConnectorException.h(79) : error C2511: 'activemq::exceptions::ActiveMQException
*activemq::connector::ConnectorException::clone(void)' : overloaded member function not found
in 'activemq::connector::ConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\ConnectorException.h(28) : see declaration
of 'activemq::connector::ConnectorException'
..\..\activemq-cpp\src\main\activemq\connector\ConnectorException.h(79) : error C2511: 'decaf::lang::Throwable
*activemq::connector::ConnectorException::clone(void)' : overloaded member function not found
in 'activemq::connector::ConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\ConnectorException.h(28) : see declaration
of 'activemq::connector::ConnectorException'
..\..\activemq-cpp\src\main\activemq\connector\ConnectorException.h(79) : error C2511: 'activemq::exceptions::ActiveMQException
*activemq::connector::ConnectorException::clone(void)' : overloaded member function not found
in 'activemq::connector::ConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\ConnectorException.h(28) : see declaration
of 'activemq::connector::ConnectorException'
..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(80) : error
C2511: 'decaf::lang::Throwable *activemq::connector::stomp::StompConnectorException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::StompConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(29)
: see declaration of 'activemq::connector::stomp::StompConnectorException'
..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(80) : error
C2511: 'activemq::exceptions::ActiveMQException *activemq::connector::stomp::StompConnectorException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::StompConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(29)
: see declaration of 'activemq::connector::stomp::StompConnectorException'
..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(80) : error
C2511: 'activemq::connector::ConnectorException *activemq::connector::stomp::StompConnectorException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::StompConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(29)
: see declaration of 'activemq::connector::stomp::StompConnectorException'
..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(80) : error
C2511: 'decaf::lang::Throwable *activemq::connector::stomp::StompConnectorException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::StompConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(29)
: see declaration of 'activemq::connector::stomp::StompConnectorException'
..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(80) : error
C2511: 'activemq::exceptions::ActiveMQException *activemq::connector::stomp::StompConnectorException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::StompConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(29)
: see declaration of 'activemq::connector::stomp::StompConnectorException'
..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(80) : error
C2511: 'activemq::connector::ConnectorException *activemq::connector::stomp::StompConnectorException::clone(void)'
: overloaded member function not found in 'activemq::connector::stomp::StompConnectorException'
        ..\..\activemq-cpp\src\main\activemq\connector\stomp\StompConnectorException.h(29)
: see declaration of 'activemq::connector::stomp::StompConnectorException'
{noformat} 

> Work around Visual Studio .NET 2003 covariant return issues
> -----------------------------------------------------------
>
>                 Key: AMQCPP-176
>                 URL: https://issues.apache.org/activemq/browse/AMQCPP-176
>             Project: ActiveMQ C++ Client
>          Issue Type: Wish
>            Reporter: Albert Strasheim
>            Assignee: Nathan Mittler
>
> It would be very useful if something could be done in the AMQCPP code to work around
the issues Visual Studio .NET 2003 has with having base classes with virtual functions as
covariant return types.
> These problems are alluded to here:
> http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=23760&SiteID=1
> Some ideas have been discussed here:
> http://www.nabble.com/Unable-to-comile-C%2B%2B-client-on-VC%2B%2B-2003-td14680479s2354.html
> but I'm hoping there might be a way to slightly restructure the AMQCPP code instead of
resorting to preprocessor directives.
> Any ideas I could try would be much appreciated.

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