Test: iterator_invalidation.cpp
iterator_invalidation.cpp: In member function 'void EventQueue::processEvents()':
iterator_invalidation.cpp:16:20: error: declaration of 'const auto& amp' has no initializer
   16 |         for (const auto& event : events_) {
      |                    ^~~~
iterator_invalidation.cpp:16:30: warning: range-based 'for' loops with initializer only available with '-std=c++20' or '-std=gnu++20' [-Wc++20-extensions]
   16 |         for (const auto& event : events_) {
      |                              ^~~~~
iterator_invalidation.cpp:16:36: error: found ':' in nested-name-specifier, expected '::'
   16 |         for (const auto& event : events_) {
      |                                    ^
      |                                    ::
iterator_invalidation.cpp:16:30: error: 'event' has not been declared
   16 |         for (const auto& event : events_) {
      |                              ^~~~~
iterator_invalidation.cpp:24:5: error: expected primary-expression before '}' token
   24 |     }
      |     ^
iterator_invalidation.cpp:24:5: error: expected ';' before '}' token
iterator_invalidation.cpp:24:5: error: expected primary-expression before '}' token
iterator_invalidation.cpp:24:5: error: expected ')' before '}' token
iterator_invalidation.cpp:16:13: note: to match this '('
   16 |         for (const auto& event : events_) {
      |             ^
iterator_invalidation.cpp:24:5: error: expected primary-expression before '}' token
   24 |     }
      |     ^