c5598d6a9e
avoid `{type error}` being leaked in user-facing messages,
particularly when using the `adt_const_params` feature
55 lines
1.9 KiB
Plaintext
55 lines
1.9 KiB
Plaintext
error[E0403]: the name `S` is already used for a generic parameter in this item's generic parameters
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--> $DIR/issue-103790.rs:4:29
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LL | struct S<const S: (), const S: S = { S }>;
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| - ^ already used
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| |
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| first use of `S`
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error[E0107]: missing generics for struct `S`
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--> $DIR/issue-103790.rs:4:32
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LL | struct S<const S: (), const S: S = { S }>;
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| ^ expected at least 1 generic argument
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note: struct defined here, with at least 1 generic parameter: `S`
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--> $DIR/issue-103790.rs:4:8
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LL | struct S<const S: (), const S: S = { S }>;
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| ^ -----------
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help: add missing generic argument
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LL | struct S<const S: (), const S: S<S> = { S }>;
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| +++
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error[E0391]: cycle detected when computing type of `S::S`
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--> $DIR/issue-103790.rs:4:32
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LL | struct S<const S: (), const S: S = { S }>;
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| ^
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= note: ...which immediately requires computing type of `S::S` again
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note: cycle used when computing explicit predicates of `S`
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--> $DIR/issue-103790.rs:4:1
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LL | struct S<const S: (), const S: S = { S }>;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
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error: `()` is forbidden as the type of a const generic parameter
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--> $DIR/issue-103790.rs:4:19
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LL | struct S<const S: (), const S: S = { S }>;
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| ^^
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= note: the only supported types are integers, `bool`, and `char`
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help: add `#![feature(adt_const_params)]` to the crate attributes to enable more complex and user defined types
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LL + #![feature(adt_const_params)]
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error: aborting due to 4 previous errors
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Some errors have detailed explanations: E0107, E0391, E0403.
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For more information about an error, try `rustc --explain E0107`.
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