| .. title:: clang-tidy - cppcoreguidelines-init-variables |
| |
| cppcoreguidelines-init-variables |
| ================================ |
| |
| Checks whether there are local variables that are declared without an |
| initial value. These may lead to unexpected behaviour if there is a |
| code path that reads the variable before assigning to it. |
| |
| Only integers, booleans, floats, doubles and pointers are checked. The |
| fix option initializes all detected values with the value of zero. An |
| exception is float and double types, which are initialized to NaN. |
| |
| As an example a function that looks like this: |
| |
| .. code-block:: c++ |
| |
| void function() { |
| int x; |
| char *txt; |
| double d; |
| |
| // Rest of the function. |
| } |
| |
| Would be rewritten to look like this: |
| |
| .. code-block:: c++ |
| |
| #include <math.h> |
| |
| void function() { |
| int x = 0; |
| char *txt = nullptr; |
| double d = NAN; |
| |
| // Rest of the function. |
| } |
| |
| Options |
| ------- |
| |
| .. option:: IncludeStyle |
| |
| A string specifying which include-style is used, `llvm` or |
| `google`. Default is `llvm`. |
| |
| .. option:: MathHeader |
| |
| A string specifying the header to include to get the definition of |
| `NAN`. Default is `math.h`. |