Question

Help me please.

“object.cpp”:

bool OBJECT::operator== (const OBJECT &object) const
{
    return *this == object;
}

bool OBJECT::operator< (const OBJECT &object) const
{
    return this->m_numberOfObject < object.m_numberOfObject;
}

“other_object.h”

class other_object{
...
set<OBJECT*>* m_imitatedObjects
... }

“other_object.cpp”

m_imitatedObjects.insert(pointer on some instance of class OBJECT) –

raises error in runtime, as I think due to cmp function wasn`t defined properly.

What to do, how can I fix this error?

Answer 1

bool OBJECT::operator== (const OBJECT &object) const
{
    return *this == object;
}

This function calls itself, causing a stack overflow. You should replace this function with whatever logic you want to use to tell if the two objects are equivalent.

Also, unless every OBJECT has a unique m_numberOfObject value, your operator< does not create a strict ordering. (Because neither of two objects with the same m_numberOfObject value but otherwise different will be less than the other.) This may cause your set to work differently from how you expect.