69 lines
2.6 KiB
Text
69 lines
2.6 KiB
Text
error: const `impl` for trait `Foo` which is not marked with `#[const_trait]`
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--> $DIR/spec-effectvar-ice.rs:12:15
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LL | trait Foo {}
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| - help: mark `Foo` as const: `#[const_trait]`
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LL |
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LL | impl<T> const Foo for T {}
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| ^^^
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= note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
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= note: adding a non-const method body in the future would be a breaking change
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error: const `impl` for trait `Foo` which is not marked with `#[const_trait]`
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--> $DIR/spec-effectvar-ice.rs:16:15
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LL | trait Foo {}
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| - help: mark `Foo` as const: `#[const_trait]`
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...
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LL | impl<T> const Foo for T where T: const Specialize {}
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| ^^^
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= note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
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= note: adding a non-const method body in the future would be a breaking change
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error: `const` can only be applied to `#[const_trait]` traits
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--> $DIR/spec-effectvar-ice.rs:16:40
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LL | impl<T> const Foo for T where T: const Specialize {}
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| ^^^^^^^^^^
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error[E0207]: the const parameter `host` is not constrained by the impl trait, self type, or predicates
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--> $DIR/spec-effectvar-ice.rs:12:9
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LL | impl<T> const Foo for T {}
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| ^^^^^ unconstrained const parameter
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= note: expressions using a const parameter must map each value to a distinct output value
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= note: proving the result of expressions other than the parameter are unique is not supported
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error[E0207]: the const parameter `host` is not constrained by the impl trait, self type, or predicates
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--> $DIR/spec-effectvar-ice.rs:16:9
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LL | impl<T> const Foo for T where T: const Specialize {}
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| ^^^^^ unconstrained const parameter
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= note: expressions using a const parameter must map each value to a distinct output value
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= note: proving the result of expressions other than the parameter are unique is not supported
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error: specialization impl does not specialize any associated items
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--> $DIR/spec-effectvar-ice.rs:16:1
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LL | impl<T> const Foo for T where T: const Specialize {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: impl is a specialization of this impl
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--> $DIR/spec-effectvar-ice.rs:12:1
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LL | impl<T> const Foo for T {}
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| ^^^^^^^^^^^^^^^^^^^^^^^
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error: could not resolve generic parameters on overridden impl
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--> $DIR/spec-effectvar-ice.rs:16:1
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LL | impl<T> const Foo for T where T: const Specialize {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: aborting due to 7 previous errors
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For more information about this error, try `rustc --explain E0207`.
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