share_ptr and Container compilation error on new version
Hello all, I'm trying to build an application. This isn't an app that I wrote but rather inherited. I'm currently porting it from Fedora 15 to Fedora 20. It compiled well on gcc 4.6.3 with boost 1.46.0. However, Fedora 20 has gcc 4.8.3 and boost 1.54. I'm new to boost and have never used it before but it looks very comprehensive. As far as I know boost/shared_ptr is the only header this component of the application is including. I'm wondering if boost changes might be causing this or maybe gcc changes but it's difficult to tell from the documentation and I'm a little under the gun at the moment. This code: template<typename Container> class DefinableVectorFinalizer: public XmlFinalizer { typedef typename Container::value_type contained_value_type; typedef typename Container::value_type::value_type value_type; .... } g++ is throwing this error which seems to have some sort of problem with Container::value_type::value_type: ../../../../../devel/include/xcl/io/DefinableVectorFinalizer.h:31:54: error: no type named ‘value_type’ in ‘xclApp::DefinableVector<boost::shared_ptr<simApp::Project>
::value_type {aka class boost::shared_ptr<mainApp::Project>}’ typedef typename Container::value_type::value_type value_type;
xclApp::DefinableVector looks like this: class DefinableVector { public: typedef typename std::vector<T>::size_type size_type; typedef typename std::vector<T>::value_type value_type; typedef value_type& reference; typedef const value_type& const_reference; typedef typename std::vector<T>::iterator iterator; typedef typename std::vector<T>::const_iterator const_iterator; .... } Any insight into this would be hugely appreciated!!!
I just read the header files on the two different version of boost and I think I answered my own question. The equivalent functionality was essentially renamed element_type. I'd still appreciate confirmation that I got that right. Thanks! On 12/11/2014 15:03, JB wrote:
Hello all, I'm trying to build an application. This isn't an app that I wrote but rather inherited. I'm currently porting it from Fedora 15 to Fedora 20. It compiled well on gcc 4.6.3 with boost 1.46.0. However, Fedora 20 has gcc 4.8.3 and boost 1.54. I'm new to boost and have never used it before but it looks very comprehensive. As far as I know boost/shared_ptr is the only header this component of the application is including. I'm wondering if boost changes might be causing this or maybe gcc changes but it's difficult to tell from the documentation and I'm a little under the gun at the moment.
This code:
template<typename Container> class DefinableVectorFinalizer: public XmlFinalizer { typedef typename Container::value_type contained_value_type; typedef typename Container::value_type::value_type value_type; .... }
g++ is throwing this error which seems to have some sort of problem with Container::value_type::value_type:
../../../../../devel/include/xcl/io/DefinableVectorFinalizer.h:31:54: error: no type named ‘value_type’ in ‘xclApp::DefinableVector<boost::shared_ptr<simApp::Project>
::value_type {aka class boost::shared_ptr<mainApp::Project>}’ typedef typename Container::value_type::value_type value_type;
xclApp::DefinableVector looks like this: class DefinableVector { public: typedef typename std::vector<T>::size_type size_type; typedef typename std::vector<T>::value_type value_type;
typedef value_type& reference; typedef const value_type& const_reference;
typedef typename std::vector<T>::iterator iterator; typedef typename std::vector<T>::const_iterator const_iterator; .... }
Any insight into this would be hugely appreciated!!!
Hi JB, JB wrote:
I just read the header files on the two different version of boost and I think I answered my own question. The equivalent functionality was essentially renamed element_type. I'd still appreciate confirmation that I got that right.
You're correct, value_type was removed. As a note, element_type was
always the correct typedef to access (value_type was undocumented). I was bit by that myself in a couple places. HTH, Nate
On 12/12/2014 9:03 AM, JB wrote:
Hello all, I'm trying to build an application. This isn't an app that I wrote but rather inherited. I'm currently porting it from Fedora 15 to Fedora 20. It compiled well on gcc 4.6.3 with boost 1.46.0. However, Fedora 20 has gcc 4.8.3 and boost 1.54. I'm new to boost and have never used it before but it looks very comprehensive. As far as I know boost/shared_ptr is the only header this component of the application is including. I'm wondering if boost changes might be causing this or maybe gcc changes but it's difficult to tell from the documentation and I'm a little under the gun at the moment.
This code:
template<typename Container> class DefinableVectorFinalizer: public XmlFinalizer { typedef typename Container::value_type contained_value_type; typedef typename Container::value_type::value_type value_type; .... }
g++ is throwing this error which seems to have some sort of problem with Container::value_type::value_type:
../../../../../devel/include/xcl/io/DefinableVectorFinalizer.h:31:54: error: no type named ‘value_type’ in ‘xclApp::DefinableVector<boost::shared_ptr<simApp::Project>
::value_type {aka class boost::shared_ptr<mainApp::Project>}’ typedef typename Container::value_type::value_type value_type;
xclApp::DefinableVector looks like this: class DefinableVector { public: typedef typename std::vector<T>::size_type size_type; typedef typename std::vector<T>::value_type value_type;
typedef value_type& reference; typedef const value_type& const_reference;
typedef typename std::vector<T>::iterator iterator; typedef typename std::vector<T>::const_iterator const_iterator; .... }
Any insight into this would be hugely appreciated!!!
Hi JB, I think your problem could be in the line: typedef typename Container::value_type::value_type value_type; try instead: typedef typename Container::value_type value_type; Arthur
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On 12/11/2014 20:52, Gruzauskas wrote:
On 12/12/2014 9:03 AM, JB wrote:
Hello all, I'm trying to build an application. This isn't an app that I wrote but rather inherited. I'm currently porting it from Fedora 15 to Fedora 20. It compiled well on gcc 4.6.3 with boost 1.46.0. However, Fedora 20 has gcc 4.8.3 and boost 1.54. I'm new to boost and have never used it before but it looks very comprehensive. As far as I know boost/shared_ptr is the only header this component of the application is including. I'm wondering if boost changes might be causing this or maybe gcc changes but it's difficult to tell from the documentation and I'm a little under the gun at the moment.
This code:
template<typename Container> class DefinableVectorFinalizer: public XmlFinalizer { typedef typename Container::value_type contained_value_type; typedef typename Container::value_type::value_type value_type; .... }
g++ is throwing this error which seems to have some sort of problem with Container::value_type::value_type:
../../../../../devel/include/xcl/io/DefinableVectorFinalizer.h:31:54: error: no type named ‘value_type’ in ‘xclApp::DefinableVector<boost::shared_ptr<simApp::Project>
::value_type {aka class boost::shared_ptr<mainApp::Project>}’ typedef typename Container::value_type::value_type value_type;
xclApp::DefinableVector looks like this: class DefinableVector { public: typedef typename std::vector<T>::size_type size_type; typedef typename std::vector<T>::value_type value_type;
typedef value_type& reference; typedef const value_type& const_reference;
typedef typename std::vector<T>::iterator iterator; typedef typename std::vector<T>::const_iterator const_iterator; .... }
Any insight into this would be hugely appreciated!!!
Hi JB,
I think your problem could be in the line:
typedef typename Container::value_type::value_type value_type;
try instead:
typedef typename Container::value_type value_type;
Arthur
Hi Arthur, thanks for the reply. There is already a declaration for that. The intent of value_type::value_type was to access the value_type attribute of the contained object. I read the header and actually found the answer...I *think*...to be the following due to changes in boost from 1.46 to 1.54: typedef typename Container::value_type::element_type value_type; That certainly resolved the compilation issue. I'll see if it works at run time.
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participants (3)
-
Gruzauskas -
JB -
Nate Crookston