mirror of https://github.com/rust-lang/rust
50 lines
1.5 KiB
Rust
50 lines
1.5 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)]
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#![feature(impl_trait_in_assoc_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 {
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type A;
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}
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impl<T> PubTrAux1<T> for u8 {}
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impl PubTrAux2 for u8 {
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type A = Priv;
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//~^ ERROR private type `Priv` in public interface
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}
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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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type Alias1: PrivTr;
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//~^ WARN trait `PrivTr` is more private than the item `PubTr::Alias1`
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type Alias2: PubTrAux1<Priv> = u8;
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//~^ WARN type `Priv` is more private than the item `PubTr::Alias2`
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type Alias3: PubTrAux2<A = Priv> = u8;
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//~^ WARN type `Priv` is more private than the item `PubTr::Alias3`
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type Alias4 = Priv;
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//~^ ERROR private type `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 `Priv` in public interface
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type Exist = impl PrivTr;
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//~^ ERROR private trait `PrivTr` in public interface
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fn infer_exist() -> Self::Exist {
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Priv
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}
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}
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}
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fn main() {}
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