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warning: function cannot return without recursing
--> $DIR/issue-103599.rs:5:1
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LL | fn wrap(x: impl T) -> impl T {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
LL |
LL | wrap(wrap(x))
| ------- recursive call site
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= note: `#[warn(unconditional_recursion)]` on by default
= help: a `loop` may express intention better if this is on purpose
warning: 1 warning emitted
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