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Another excellent test suggestion by Dear Reviewer.
After tail calls, the transform results in:
```
def tick(i: Int): Unit = {
<synthetic> val _$this: Test.type = Test.this;
_tick(_$this: Test.type, i: Int){
if (i.==(0))
()
else
if (i.==(42))
{
Test.this.tick(0);
_tick(Test.this, i.-(1).asInstanceOf[Int]())
}
else
_tick(Test.this, i.-(1).asInstanceOf[Int]()).asInstanceOf[Unit]()
}
};
```
We test this by mostly exercising the tail-recursive code path with
a level of recursion that would overflow the stack if we weren't
using jumps.
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