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When an associated type with GATs isn't specified in a `dyn Trait`, emit an object safety error instead of only complaining about the missing associated type, as it will lead the user down a path of three different errors before letting them know that what they were trying to do is impossible to begin with. Fix #103155.
20 lines
668 B
Plaintext
20 lines
668 B
Plaintext
error[E0220]: associated type `F` not found for `Trait`
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--> $DIR/E0220.rs:5:22
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LL | type Foo = dyn Trait<F=i32>;
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| ^ help: `Trait` has the following associated type: `Bar`
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error[E0191]: the value of the associated type `Bar` in `Trait` must be specified
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--> $DIR/E0220.rs:5:16
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LL | type Bar;
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| -------- `Bar` defined here
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...
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LL | type Foo = dyn Trait<F=i32>;
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| ^^^^^^^^^^^^ help: specify the associated type: `Trait<F=i32, Bar = Type>`
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error: aborting due to 2 previous errors
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Some errors have detailed explanations: E0191, E0220.
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For more information about an error, try `rustc --explain E0191`.
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