mirror of https://github.com/rust-lang/rust
12 lines
296 B
Rust
12 lines
296 B
Rust
trait Bound {}
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struct NeedsBound<T: Bound>(T);
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// Checks that we enforce that closure args are WF.
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fn constrain_inner<T, F: for<'a> FnOnce(&'a (), NeedsBound<T>)>(_: T, _: F) {}
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fn main() {
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constrain_inner(1u32, |&(), _| ());
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//~^ ERROR the trait bound `u32: Bound` is not satisfied
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}
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