```cpp #include <list> #include <unordered_set> void f() { std::list<int> l; std::unordered_set<int> us; us.insert(l.cbegin(), l.cend()); } ``` ``` <source>:8:5: warning: Container accessed using foreign iterator argument [clang-analyzer-alpha.cplusplus.MismatchedIterator] 8 | us.insert(l.cbegin(), l.cend()); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <source>:8:5: note: Container accessed using foreign iterator argument 8 | us.insert(l.cbegin(), l.cend()); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ``` https://godbolt.org/z/arhEMh6Go