Aren't there compiler warnings for potential overflows already, that come in the form of warning: something when compiling? Aren't runtime overflows detected using the coredump in gdb, not gcc?
Shiny ASCII art seems like a waste of time and/or calling the dev stupid. What am i missing here?
Well, I don't mind being called stupid if it makes my debugging easier. For many people visual/ graphical representation is much easier to comprehend than a block of text.