W8008 Condition is always true OR W8008 Condition is always false (C++)

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(Command-line option to suppress warning: -w-ccc)

Whenever the compiler encounters a constant comparison that (due to the nature of the value being compared) is always true or false, it issues this warning and evaluates the condition at compile time.

For example:

  void proc(unsigned x){
    if (x >= 0)        /* always 'true' */
    {
       ...
    }
  }