rust/src/test/ui/specialization/non-defaulted-item-fail.stderr

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warning: the feature `specialization` is incomplete and may be unsafe to use and/or cause compiler crashes
--> $DIR/non-defaulted-item-fail.rs:1:12
|
LL | #![feature(specialization, associated_type_defaults)]
| ^^^^^^^^^^^^^^
|
= note: `#[warn(incomplete_features)]` on by default
= note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
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error[E0520]: `Ty` specializes an item from a parent `impl`, but that item is not marked `default`
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--> $DIR/non-defaulted-item-fail.rs:30:5
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|
LL | / impl<T> Foo for Box<T> {
LL | | type Ty = bool;
LL | | const CONST: u8 = 0;
LL | | fn foo(&self) -> bool { false }
LL | | }
| |_- parent `impl` is here
...
LL | type Ty = Vec<()>;
| ^^^^^^^^^^^^^^^^^^ cannot specialize default item `Ty`
|
= note: to specialize, `Ty` in the parent `impl` must be marked `default`
error[E0520]: `CONST` specializes an item from a parent `impl`, but that item is not marked `default`
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--> $DIR/non-defaulted-item-fail.rs:32:5
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|
LL | / impl<T> Foo for Box<T> {
LL | | type Ty = bool;
LL | | const CONST: u8 = 0;
LL | | fn foo(&self) -> bool { false }
LL | | }
| |_- parent `impl` is here
...
LL | const CONST: u8 = 42;
| ^^^^^^^^^^^^^^^^^^^^^ cannot specialize default item `CONST`
|
= note: to specialize, `CONST` in the parent `impl` must be marked `default`
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error[E0520]: `foo` specializes an item from a parent `impl`, but that item is not marked `default`
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--> $DIR/non-defaulted-item-fail.rs:34:5
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|
LL | / impl<T> Foo for Box<T> {
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LL | | type Ty = bool;
LL | | const CONST: u8 = 0;
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LL | | fn foo(&self) -> bool { false }
LL | | }
| |_- parent `impl` is here
...
LL | fn foo(&self) -> bool { true }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot specialize default item `foo`
|
= note: to specialize, `foo` in the parent `impl` must be marked `default`
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error[E0520]: `Ty` specializes an item from a parent `impl`, but that item is not marked `default`
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--> $DIR/non-defaulted-item-fail.rs:46:5
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|
LL | impl<T> Foo for Vec<T> {}
| ------------------------- parent `impl` is here
...
LL | type Ty = Vec<()>;
| ^^^^^^^^^^^^^^^^^^ cannot specialize default item `Ty`
|
= note: to specialize, `Ty` in the parent `impl` must be marked `default`
error[E0520]: `CONST` specializes an item from a parent `impl`, but that item is not marked `default`
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--> $DIR/non-defaulted-item-fail.rs:48:5
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|
LL | impl<T> Foo for Vec<T> {}
| ------------------------- parent `impl` is here
...
LL | const CONST: u8 = 42;
| ^^^^^^^^^^^^^^^^^^^^^ cannot specialize default item `CONST`
|
= note: to specialize, `CONST` in the parent `impl` must be marked `default`
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error[E0520]: `foo` specializes an item from a parent `impl`, but that item is not marked `default`
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--> $DIR/non-defaulted-item-fail.rs:50:5
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|
LL | impl<T> Foo for Vec<T> {}
| ------------------------- parent `impl` is here
...
LL | fn foo(&self) -> bool { true }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot specialize default item `foo`
|
= note: to specialize, `foo` in the parent `impl` must be marked `default`
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error: aborting due to 6 previous errors; 1 warning emitted
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For more information about this error, try `rustc --explain E0520`.