readability-avoid-unconditional-preprocessor-if¶
Finds code blocks that are constantly enabled or disabled in preprocessor
directives by analyzing #if conditions, such as #if 0 and #if 1,
etc.
#if 0
// some disabled code
#endif
#if 1
// some enabled code that can be disabled manually
#endif
Unconditional preprocessor directives, such as #if 0 for disabled code
and #if 1 for enabled code, can lead to dead code and always enabled code,
respectively. Dead code can make understanding the codebase more difficult,
hinder readability, and may be a sign of unfinished functionality or abandoned
features. This can cause maintenance issues, confusion for future developers,
and potential compilation problems.
As a solution for both cases, consider using preprocessor macros or defines,
like #ifdef DEBUGGING_ENABLED, to control code enabling or disabling.
This approach provides better coordination and flexibility when working with
different parts of the codebase. Alternatively, you can comment out the entire
code using /* */ block comments and add a hint, such as @todo,
to indicate future actions.