Why is this an issue?
Commented-out code distracts the focus from the actual executed code. It creates a noise that increases maintenance code. And because it is never
executed, it quickly becomes out of date and invalid.
Commented-out code should be deleted and can be retrieved from source control history if required.
Exceptions
This rule does not apply to code documentation using Doxygen, QDoc, markdown, or HTML tags.
Resources
External coding guidelines
- MISRA C:2004, 2.4 - Sections of code should not be "commented out".
- MISRA C++:2008, 2-7-2 - Sections of code shall not be "commented out" using C-style comments.
- MISRA C++:2008, 2-7-3 - Sections of code should not be "commented out" using C++ comments.
- MISRA C:2012, Dir. 4.4 - Sections of code should not be "commented out"
