41 lines
1.3 KiB
Rust
41 lines
1.3 KiB
Rust
// Private types and traits are not allowed in interfaces of associated types.
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// This test also ensures that the checks are performed even inside private modules.
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#![feature(associated_type_defaults, existential_type)]
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mod m {
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struct Priv;
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trait PrivTr {}
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impl PrivTr for Priv {}
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pub trait PubTrAux1<T> {}
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pub trait PubTrAux2 { type A; }
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// "Private-in-public in associated types is hard error" in RFC 2145
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// applies only to the aliased types, not bounds.
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pub trait PubTr {
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//~^ WARN private trait `m::PrivTr` in public interface
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//~| WARN this was previously accepted
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//~| WARN private type `m::Priv` in public interface
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//~| WARN this was previously accepted
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type Alias1: PrivTr;
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type Alias2: PubTrAux1<Priv> = u8;
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type Alias3: PubTrAux2<A = Priv> = u8;
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type Alias4 = Priv;
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//~^ ERROR private type `m::Priv` in public interface
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type Exist;
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fn infer_exist() -> Self::Exist;
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}
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impl PubTr for u8 {
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type Alias1 = Priv;
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//~^ ERROR private type `m::Priv` in public interface
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existential type Exist: PrivTr;
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//~^ ERROR private trait `m::PrivTr` in public interface
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fn infer_exist() -> Self::Exist { Priv }
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}
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}
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fn main() {}
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