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Switch existential_type to type_alias_impl_trait

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This commit is contained in:
varkor 2019-07-30 00:11:50 +01:00
parent 435236b887
commit 87738fe834
7 changed files with 52 additions and 61 deletions
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17
src/test/ui/feature-gates/feature-gate-existential-type.rs
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@ -1,17 +0,0 @@
// Check that existential types must be ungated to use the `existential` keyword
existential type Foo: std::fmt::Debug; //~ ERROR existential types are unstable
trait Bar {
type Baa: std::fmt::Debug;
fn define() -> Self::Baa;
}
impl Bar for () {
existential type Baa: std::fmt::Debug; //~ ERROR existential types are unstable
fn define() -> Self::Baa { 0 }
}
fn define() -> Foo { 0 }
fn main() {}

21
src/test/ui/feature-gates/feature-gate-existential-type.stderr
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@ -1,21 +0,0 @@
error[E0658]: existential types are unstable
--> $DIR/feature-gate-existential-type.rs:3:1
|
LL | existential type Foo: std::fmt::Debug;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: for more information, see https://github.com/rust-lang/rust/issues/63063
= help: add `#![feature(existential_type)]` to the crate attributes to enable
error[E0658]: existential types are unstable
--> $DIR/feature-gate-existential-type.rs:11:5
|
LL | existential type Baa: std::fmt::Debug;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: for more information, see https://github.com/rust-lang/rust/issues/63063
= help: add `#![feature(existential_type)]` to the crate attributes to enable
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0658`.

15
src/test/ui/feature-gates/feature-gate-type_alias_impl_trait.rs Normal file
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@ -0,0 +1,15 @@
type Foo = impl std::fmt::Debug; //~ ERROR existential types are unstable
trait Bar {
type Baa: std::fmt::Debug;
fn define() -> Self::Baa;
}
impl Bar for () {
type Baa = impl std::fmt::Debug; //~ ERROR existential types are unstable
fn define() -> Self::Baa { 0 }
}
fn define() -> Foo { 0 }
fn main() {}

21
src/test/ui/feature-gates/feature-gate-type_alias_impl_trait.stderr Normal file
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@ -0,0 +1,21 @@
error[E0658]: existential types are unstable
--> $DIR/feature-gate-type_alias_impl_trait.rs:1:1
|
LL | type Foo = impl std::fmt::Debug;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: for more information, see https://github.com/rust-lang/rust/issues/63063
= help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable
error[E0658]: existential types are unstable
--> $DIR/feature-gate-type_alias_impl_trait.rs:9:5
|
LL | type Baa = impl std::fmt::Debug;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: for more information, see https://github.com/rust-lang/rust/issues/63063
= help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0658`.