I meant a crash. Obviously both at once is best, but you can detect the possibility of the crash at compile time (disassemble your program and see the bounds check), and it turns a possible security issue into a predictable crash so that’s safer.

I don’t really love forcing errors; when a program is “under construction” you should be able to act like it is and not have to clean up all the incomplete parts. It also annoys people testing new compilers against your code.