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15 lines
395 B
Rust
15 lines
395 B
Rust
// run-pass
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#![allow(warnings)]
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// Here the type of `c` is `Option<?T>`, where `?T` is unconstrained.
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// Because there is data-flow from the `{ return; }` block, which
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// diverges and hence has type `!`, into `c`, we will default `?T` to
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// `!`, and hence this code compiles rather than failing and requiring
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// a type annotation.
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fn main() {
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let c = Some({ return; });
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c.unwrap();
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}
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