mirror of https://github.com/rust-lang/rust
18 lines
582 B
Rust
18 lines
582 B
Rust
// rust-lang/rust#57979 : the initial support for `impl Trait` didn't
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// properly check syntax hidden behind an associated type projection,
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// but it did catch *some cases*. This is checking that we continue to
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// properly emit errors for those.
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//
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// issue-57979-nested-impl-trait-in-assoc-proj.rs shows the main case
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// that we were previously failing to catch.
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struct Deeper<T>(T);
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pub trait Foo<T> { }
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pub trait Bar { }
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pub trait Quux { type Assoc; }
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pub fn demo(_: impl Quux<Assoc=Deeper<impl Foo<impl Bar>>>) { }
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//~^ ERROR nested `impl Trait` is not allowed
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fn main() { }
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