Segmentation fault

[Anjana Prabhakar]

Hi All..

I am getting a segmentation fault on calling the inbuilt function

 const char *MatchableObject::getAsString() const

 The code is as follows :

bool MatchExpression::matches(const Matchable *object)

{

........

const char *attr;

attr=object->getAsString();

........

}

Please help.

[baukran]

You need to allocate a new Matchable object on the heap first before you can you use (e.g. call getAsString()) it.

I don't know what MatchableObject is, but something like:

Matchable *object = new Matchable();

Maybe you should read about the basics of C++, including how to create and deal with objects. 

Am Samstag, 9. September 2017 18:23:09 UTC+2 schrieb Anjana Prabhakar:

Hi All..

I am getting a segmentation fault on calling the inbuilt function

 const char *MatchableObject::getAsString() const

 as :

const Matchable *object;

const char *attr;

attr=object->getAsString();

Please help.

[Anjana Prabhakar]

Sorry for the confusion. Have edited the question.

[Alfonso Ariza Quintana]

const Matchable *object;

attr=object->getAsString();

 

object pointer doesn’t have a valid object.

 

De: omn...@googlegroups.com [mailto:omn...@googlegroups.com] En nombre de Anjana Prabhakar
Enviado el: sábado, 09 de septiembre de 2017 18:23
Para: OMNeT++ Users <omn...@googlegroups.com>
Asunto: [Omnetpp-l] Segmentation fault

 

Hi All..

I am getting a segmentation fault on calling the inbuilt function

 const char *MatchableObject::getAsString() const

 as :

const Matchable *object;

const char *attr;

attr=object->getAsString();

 

Please help.

 

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[Anjana Prabhakar]

Sorry for the ambiguity. I have modified the question.