It’s up to you to prevent the overflow. The Overflow Blog Open source has a funding problem. If the recursive function is made tail-recursive then it is more efficient than a non-tail-recursive function because every function call does not need to go on stack … A first stab — Trampolining. Hence, they are stacked together and increase as the recursion goes deeper. Tail call elimination comes to rescue. I don’t know the circumstances of your function, so for all I know it could or could not cause one. Simply say, every times a function is called, an execution context is created. In the previous part we solved a problem using recursion. So we need a function that inserts at the bottom of a stack using the above given basic stack function. Nevertheless, it only takes a relative small list to cause the stack to overflow. Typically, the stack will overflow after between 6,000 and 7,000 steps. Some malware specifically targets a program's call stack and takes advantage of the stack's inherently recursive nature. IE, you induced a stack overflow with recursion passing 10,000 to a routine, but sorting a million items would basically concurrently call about 20 routines while making about 200K calls overall. Tail recursion is a recursion of a function where it does not consumes stack space and hence prevents stack overflow. You might want to explain why recursive routines to sort are unlikely to cause a stack overflow because of the nature of the routine. However, for large circuits, such as top-level blocks, I get the following error: p, li { white … ... Browse other questions tagged python recursion tree or ask your own question. To represent a step in the calculation, we will use an abstract class called TailCall (since we want to represent a call to a method that appears in tail position). While knowing the recursive solution is not a bad thing, one should also realize that many times the iterative solution is better. Join Stack Overflow to learn, share knowledge, and build your career. And when stack becomes empty, pushes new item and all items stored in call stack. I have implemented a recursive function to explore a circuit hierarchically at the schematic level. When a method calls a method, it has some administrative cost, it needs memory. In this solution a method keeps calling itself. If the function keeps on calling itself, and has no way out, it will cause a stack overflow. What we have to do is to create a function or a method returning a non evaluated step. Even in the absence of malware, a stack overflow caused by unbounded recursion can be fatal to the program, and exception handling logic may not prevent the corresponding process from being terminated. You can imagine the stack size of factorial(32768) given this from factorial(3). 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