c8c04663c5
This is useful when you have two dependencies that use different trait for the same thing and with the same name. The user can accidentally implement the bad one which might be confusing. This commits refactorizes existing diagnostics about multiple different crates with the same version and adds a note when similarly named traits are found. All diagnostics are merged into a single one.
28 lines
1.2 KiB
Rust
28 lines
1.2 KiB
Rust
trait Trait {} //~ HELP this trait has no implementations, consider adding one
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trait TraitWithParam<T> {} //~ HELP this trait has no implementations, consider adding one
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mod m {
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pub trait Trait {}
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pub trait TraitWithParam<T> {}
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pub struct St; //~ HELP the trait `Trait` is not implemented for `St`
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//~| HELP the trait `TraitWithParam<St>` is not implemented for `St`
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impl Trait for St {}
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impl<T> TraitWithParam<T> for St {}
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}
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fn func<T: Trait>(_: T) {} //~ NOTE required by a bound in `func`
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//~^ NOTE required by this bound in `func`
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fn func2<T: TraitWithParam<T>> (_: T) {} //~ NOTE required by a bound in `func2`
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//~^ NOTE required by this bound in `func2`
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fn main() {
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func(m::St); //~ ERROR the trait bound `St: Trait` is not satisfied
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//~^ NOTE unsatisfied trait bound
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//~| NOTE required by a bound introduced by this call
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//~| NOTE `St` implements similarly named trait `m::Trait`, but not `Trait`
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func2(m::St); //~ ERROR the trait bound `St: TraitWithParam<St>` is not satisfied
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//~^ NOTE unsatisfied trait bound
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//~| NOTE required by a bound introduced by this call
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//~| NOTE `St` implements similarly named trait `m::TraitWithParam`, but not `TraitWithParam<St>`
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}
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