| .. title:: clang-tidy - readability-redundant-declaration |
| |
| readability-redundant-declaration |
| ================================= |
| |
| Finds redundant variable and function declarations. |
| |
| .. code-block:: c++ |
| |
| extern int X; |
| extern int X; |
| |
| becomes |
| |
| .. code-block:: c++ |
| |
| extern int X; |
| |
| Such redundant declarations can be removed without changing program behaviour. |
| They can for instance be unintentional left overs from previous refactorings |
| when code has been moved around. Having redundant declarations could in worst |
| case mean that there are typos in the code that cause bugs. |
| |
| Normally the code can be automatically fixed, :program:`clang-tidy` can remove |
| the second declaration. However there are 2 cases when you need to fix the code |
| manually: |
| |
| * When the declarations are in different header files; |
| * When multiple variables are declared together. |
| |
| Options |
| ------- |
| |
| .. option:: IgnoreMacros |
| |
| If set to non-zero, the check will not give warnings inside macros. Default |
| is `1`. |
