Test: iterator_invalidation.cpp
iterator_invalidation.cpp:30:6: error: expected ';' after class definition
   30 |     }
      |      ^
      |      ;
iterator_invalidation.cpp: In member function 'void EventQueue::addEvent(const std::string&)':
iterator_invalidation.cpp:9:9: error: 'events_' was not declared in this scope; did you mean 'event'?
    9 |         events_.push_back(event);
      |         ^~~~~~~
      |         event
iterator_invalidation.cpp: In member function 'void EventQueue::processEvents()':
iterator_invalidation.cpp:16:27: error: 'events_' was not declared in this scope
   16 |         auto eventsCopy = events_;  // Copy to avoid invalidation
      |                           ^~~~~~~
iterator_invalidation.cpp:23:40: error: 'it' was not declared in this scope; did you mean 'int'?
   23 |             std::cout << "Event: " << *it << std::endl;
      |                                        ^~
      |                                        int
iterator_invalidation.cpp: At global scope:
iterator_invalidation.cpp:32:25: error: non-member function 'int getEventCount()' cannot have cv-qualifier
   32 |     int getEventCount() const {
      |                         ^~~~~
iterator_invalidation.cpp: In function 'int getEventCount()':
iterator_invalidation.cpp:33:16: error: 'events_' was not declared in this scope
   33 |         return events_.size();
      |                ^~~~~~~
iterator_invalidation.cpp: At global scope:
iterator_invalidation.cpp:36:1: error: expected unqualified-id before 'private'
   36 | private:
      | ^~~~~~~
iterator_invalidation.cpp:38:1: error: expected declaration before '}' token
   38 | };
      | ^
iterator_invalidation.cpp: In function 'int main()':
iterator_invalidation.cpp:48:44: error: 'class EventQueue' has no member named 'getEventCount'
   48 |     std::cout << "Total events: " << queue.getEventCount() << std::endl;
      |                                            ^~~~~~~~~~~~~