31 lines
396 B
Rust
31 lines
396 B
Rust
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// check-pass
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use std::marker::PhantomData;
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trait A<'a> {
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type B;
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fn b(self) -> Self::B;
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}
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struct T;
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struct S<'a>(PhantomData<&'a ()>);
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impl<'a> A<'a> for T {
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type B = S<'a>;
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fn b(self) -> Self::B {
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S(PhantomData)
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}
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}
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fn s<TT, F>(t: TT, f: F)
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where
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TT: for<'a> A<'a>,
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F: for<'a> FnOnce(<TT as A<'a>>::B)
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{
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f(t.b());
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}
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fn main() {
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s(T, |_| {});
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}
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