How does stack memory increase during program execution?

In Go, stack memory increases dynamically as needed. When functions are called, new stack frames are created, and if the current stack is insufficient, the runtime automatically allocates a larger stack and copies the data there. This allows efficient memory usage, starting with a small stack and expanding it during deep recursive calls or with a large number of local variables.

Example: during deep recursion, the stack will grow automatically without the need for manual size management.