Most beginners are thinking, that an interrupt occur only on a certain place of the code.

This may be almost true only on very small beginner projects.

But if a project grows, then an interrupt can occur absolutely anywhere and thus never returning will confuse any real application completely.


An Interrupt can and will occur anywhere !

So if you not absolutely 100% sure, that an interrupt without return from absolutely anywhere never harm the application, then never touch the stack



E.g. if you was interrupted during ironing by a telephone call and will never return, your home can burn down

But if you was interrupted during reading a book, not returning may be safe.

But the telephone call (interrupt event) can never know, if your current task was critical (must be finished) or not.


Peter