23 lines
513 B
Rust
23 lines
513 B
Rust
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//@ check-pass
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//! Tests that a HRTB + FnOnce bound involving an associated type don't prevent
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//! a function pointer from implementing `Fn` traits.
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//! Test for <https://github.com/rust-lang/rust/issues/28994>
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trait LifetimeToType<'a> {
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type Out;
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}
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impl<'a> LifetimeToType<'a> for () {
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type Out = &'a ();
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}
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fn id<'a>(val: &'a ()) -> <() as LifetimeToType<'a>>::Out {
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val
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}
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fn assert_fn<F: for<'a> FnOnce(&'a ()) -> <() as LifetimeToType<'a>>::Out>(_func: F) { }
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fn main() {
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assert_fn(id);
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}
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