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E0210: Add a warning about type aliases #31130

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Jan 23, 2016
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E0210: Add a warning about type aliases #31130

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2 changes: 2 additions & 0 deletions src/librustc_typeck/diagnostics.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2269,6 +2269,8 @@ struct MyType<T>(T);
impl<T> ForeignTrait for MyType<T> { ... } // Ok
```

Please note that a type alias is not sufficient.

For another example of an error, suppose there's another trait defined in `foo`
named `ForeignTrait2` that takes two type parameters. Then this `impl` results
in the same rule violation:
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