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error: `[u8]` is forbidden as the type of a const generic parameter
--> $DIR/feature-gate-unsized-const-params.rs:1:21
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LL | struct Foo<const N: [u8]>;
| ^^^^
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= note: the only supported types are integers, `bool`, and `char`
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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help: add `#![feature(unsized_const_params)]` to the crate attributes to enable references to implement the `ConstParamTy` trait
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LL + #![feature(unsized_const_params)]
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error: aborting due to 1 previous error
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