| .. title:: clang-tidy - bugprone-unused-raii |
| |
| bugprone-unused-raii |
| ==================== |
| |
| Finds temporaries that look like RAII objects. |
| |
| The canonical example for this is a scoped lock. |
| |
| .. code-block:: c++ |
| |
| { |
| scoped_lock(&global_mutex); |
| critical_section(); |
| } |
| |
| The destructor of the scoped_lock is called before the ``critical_section`` is |
| entered, leaving it unprotected. |
| |
| We apply a number of heuristics to reduce the false positive count of this |
| check: |
| |
| - Ignore code expanded from macros. Testing frameworks make heavy use of this. |
| |
| - Ignore types with trivial destructors. They are very unlikely to be RAII |
| objects and there's no difference when they are deleted. |
| |
| - Ignore objects at the end of a compound statement (doesn't change behavior). |
| |
| - Ignore objects returned from a call. |
