34 lines
936 B
Rust
34 lines
936 B
Rust
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// This is a non-regression test for issue #116657, where NLL and `-Zpolonius=next` computed
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// different loan scopes when a member constraint was not ultimately applied.
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//@ revisions: nll polonius
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//@ [polonius] compile-flags: -Zpolonius=next
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#![feature(impl_trait_in_assoc_type)]
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trait Callable {
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type Output;
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fn call(x: Self) -> Self::Output;
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}
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trait PlusOne {}
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impl<'a> PlusOne for &'a mut i32 {}
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impl<T: PlusOne> Callable for T {
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//[nll]~^ ERROR not all trait items implemented
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//[polonius]~^^ ERROR not all trait items implemented
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type Output = impl PlusOne;
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//[nll]~^ ERROR unconstrained opaque type
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//[polonius]~^^ ERROR unconstrained opaque type
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}
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fn test<'a>(y: &'a mut i32) -> impl PlusOne {
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<&mut i32 as Callable>::call(y)
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//[nll]~^ ERROR hidden type for `impl PlusOne` captures lifetime
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//[polonius]~^^ ERROR hidden type for `impl PlusOne` captures lifetime
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}
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fn main() {}
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