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error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types
--> $DIR/issue-77179.rs:8:22
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LL | fn test() -> Pointer<_> {
| --------^-
| | |
| | not allowed in type signatures
| help: replace with the correct return type: `Pointer<i32>`
error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
--> $DIR/issue-77179.rs:19:25
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LL | fn bar() -> Pointer<_>;
| ^ not allowed in type signatures
error[E0792]: expected generic type parameter, found `i32`
--> $DIR/issue-77179.rs:10:5
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LL | type Pointer<T> = impl std::ops::Deref<Target = T>;
| - this generic parameter must be used with a generic type parameter
...
LL | Box::new(1)
| ^^^^^^^^^^^
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0121, E0792.
For more information about an error, try `rustc --explain E0121`.
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