Question

I declare an obj :

#include "abc.h"

class xxx
{
public: 
  xxx();
  ~xxx();
  abc* q;
...
};

in the .cpp file i do the following

this->q=new abc(); <-error on this line with undefined reference to abc::abc()

In the console it also appears this error:

Dwarf Error: Offset (76195) greater than or equal to .debug_str size
(1472).

anyone knows what could be wrong? i’m using eclipse, fedora 14

Answer 1

undefined reference to abc::abc()

It is an Linking error which tells you that the linker could not find the definition for abc::abc().

Most likely, You only declared but did not define the no argument constructor for class abc.
In your cpp file you should have:

abc::abc()
{

}

If you already have it in place then, You should ensure that the source cpp file which has this definition is being properly linked to your project.