Hi,
I am trying to access a method from 'child' class in a shared library
which is declared as virtual in its 'base' class.
I get a segmentation fault.Is this some sort of limitation ?
(Please note : the library is libchild made from child.cc
only and base::test() is virtual)
----------------------------------------------------------------
Please see the following code :
#file : base.cc
namespace XYZ {
class base {
public:
base() {}
virtual void test()
{
cout<<"helo from base test()"<<endl;
}
};
};
*************
#file child.cc
class child : public base {
public:
child() {
cout << "helo world!This is child constructor."<<endl;
}
void test()
{
cout<<"hi..this from child" <<endl;
}
};
extern "C" child* get_type(void) //for demangling
{ //used in dlsym()
return (new child());
}
***************
#file:main.cc
int main()
{
base *ldmem = load_libmem(); //succesfully loads libchild.cc
ldmem->test(); //segmentation fault here
}
**************
>g++ -shared -o libchild.so child.cc
./a.out is created from base.cc and main.cc
>./a.out
helo world!This is child constructor.
Segmentation fault
------------------------------------------------------------
Cant help if code for loading (dlopen and dlsym ) are not there.
Should truncate the bigger code.
Please let me know if i have erred somewhere!
[ B/n my gcc version is gcc version 3.2.3 on i686 ]
--
Regards,
Anitha B,
Sankhya Technologies Private Limited.
