I'm writing a programming language and I have a simple program that loops 5,000,000 times. This causes a stack overflow when I run the program through my binary with cargo run. However, the benchmark that runs the exact same function using criterion does not cause a stack overflow.

Why is this happening? To be clear, I understand why the stack overflow is happening, I'm just wandering what it is that makes the benchmark case different so as to prevent the overflow.

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