Ensuring It Only Works In Debug Mode

Ensuring It Only Works In Debug Mode
If you've defined TESTING as 1

    #define TESTING 1

this gives you the wonderful opportunity to have separate code sections, such as

    #if TESTING==1
    #endif

which can contain such indispensable tidbits as

    x = rt_val;

so that if anyone resets TESTING to 0, the program won't work. And with the tiniest bit of imaginative work, it will not only befuddle the logic, but confound the compiler as well.