Question

this code runs correctly but at a unspecific moment im getting an exception access violation at line

return lhs.getGeneralType()->getID() != rhs.getGeneralType()->getID();

and the error breaks my application… ive already tried to compile with /EHa but the error

repeating… this line of code runs correctly many times and after some time this error occurs..

if (lhs.getType() == rhs.getType()) {

    try {

        if (lhs.getGeneralType() != NULL && lhs.getGeneralType() != NULL)
            return lhs.getGeneralType()->getID() != rhs.getGeneralType()->getID();
        else if (lhs.getGeneralType() == NULL && lhs.getGeneralType() == NULL)
            return false;
        else if (lhs.getGeneralType() != NULL && lhs.getGeneralType() == NULL)
            return false;
        else if (lhs.getGeneralType() == NULL && lhs.getGeneralType() != NULL)
            return true;
        else
            return true;

    } catch(char * e) { // tried also exception & , char* e
        return true;
    }   
} else
    return true;

the definition of Type which getGeneralType() returns is that below

  class Type
  {
  private:
    int _id;
  public:
    Type(int id);
    operator int() const;
    int getID() const;
  };

Answer 1

It looks like a spelling mistake in the if-statements

if (lhs.getGeneralType() != NULL && lhs.getGeneralType() != NULL)

One of the lhs‘s should probably be rhs.