title: In Ada, how do you change a constraint_error to a self-defined exception?
body: <p>I am working with a linked list stack and I want it to get an Underflow error so I can see that it is working properly. It, however, keeps giving me a constraint error message where I want there to be the underflow message. Any tips on what to do would be helpful. I cannot put up the code at the current moment for my server is down but I will update this as soon as I can</p>