16 lines
449 B
Rust
16 lines
449 B
Rust
// check-pass
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#![feature(unboxed_closures)]
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fn is_fn<T: for<'a> Fn<(&'a (),)>>() {}
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fn is_fn2<T: for<'a, 'b> Fn<(&'a &'b (),)>>() {}
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struct Outlives<'a, 'b>(std::marker::PhantomData<&'a &'b ()>);
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fn main() {
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is_fn::<for<'a> fn(&'a ()) -> &'a ()>();
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is_fn::<for<'a> fn(&'a ()) -> &'a dyn std::fmt::Debug>();
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is_fn2::<for<'a, 'b> fn(&'a &'b ()) -> Outlives<'a, 'b>>();
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is_fn2::<for<'a, 'b> fn(&'a &'b ()) -> (&'a (), &'a ())>();
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}
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