c5598d6a9e
avoid `{type error}` being leaked in user-facing messages,
particularly when using the `adt_const_params` feature
69 lines
2.5 KiB
Plaintext
69 lines
2.5 KiB
Plaintext
error: `&'static str` is forbidden as the type of a const generic parameter
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--> $DIR/slice-const-param-mismatch.rs:8:29
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LL | struct ConstString<const T: &'static str>;
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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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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: `&'static [u8]` is forbidden as the type of a const generic parameter
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--> $DIR/slice-const-param-mismatch.rs:11:28
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LL | struct ConstBytes<const T: &'static [u8]>;
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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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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[E0308]: mismatched types
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--> $DIR/slice-const-param-mismatch.rs:17:35
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LL | let _: ConstString<"Hello"> = ConstString::<"World">;
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| -------------------- ^^^^^^^^^^^^^^^^^^^^^^ expected `"Hello"`, found `"World"`
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| |
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| expected due to this
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= note: expected struct `ConstString<"Hello">`
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found struct `ConstString<"World">`
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error[E0308]: mismatched types
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--> $DIR/slice-const-param-mismatch.rs:19:33
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LL | let _: ConstString<"ℇ㇈↦"> = ConstString::<"ℇ㇈↥">;
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| ------------------- ^^^^^^^^^^^^^^^^^^^^^ expected `"ℇ㇈↦"`, found `"ℇ㇈↥"`
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| |
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| expected due to this
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= note: expected struct `ConstString<"ℇ㇈↦">`
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found struct `ConstString<"ℇ㇈↥">`
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error[E0308]: mismatched types
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--> $DIR/slice-const-param-mismatch.rs:21:33
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LL | let _: ConstBytes<b"AAA"> = ConstBytes::<b"BBB">;
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| ------------------ ^^^^^^^^^^^^^^^^^^^^ expected `b"AAA"`, found `b"BBB"`
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| expected due to this
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= note: expected struct `ConstBytes<b"AAA">`
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found struct `ConstBytes<b"BBB">`
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error: aborting due to 5 previous errors
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For more information about this error, try `rustc --explain E0308`.
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