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``` error: `S2<'_>` is forbidden as the type of a const generic parameter --> $DIR/lifetime-in-const-param.rs:5:23 | LL | struct S<'a, const N: S2>(&'a ()); | ^^ | = 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 | LL + #![feature(adt_const_params)] | ``` Fix #55941.
43 lines
1.5 KiB
Plaintext
43 lines
1.5 KiB
Plaintext
error[E0658]: `?` is not allowed in a `const fn`
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--> $DIR/const-try-feature-gate.rs:4:5
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LL | Some(())?;
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| ^^^^^^^^^
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= note: see issue #74935 <https://github.com/rust-lang/rust/issues/74935> for more information
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= help: add `#![feature(const_try)]` to the crate attributes to enable
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= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
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error[E0015]: `?` cannot determine the branch of `Option<()>` in constant functions
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--> $DIR/const-try-feature-gate.rs:4:5
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LL | Some(())?;
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| ^^^^^^^^^
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note: impl defined here, but it is not `const`
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--> $SRC_DIR/core/src/option.rs:LL:COL
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= note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
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help: add `#![feature(const_trait_impl)]` to the crate attributes to enable
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LL + #![feature(const_trait_impl)]
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error[E0015]: `?` cannot convert from residual of `Option<()>` in constant functions
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--> $DIR/const-try-feature-gate.rs:4:5
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LL | Some(())?;
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| ^^^^^^^^^
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note: impl defined here, but it is not `const`
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--> $SRC_DIR/core/src/option.rs:LL:COL
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= note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
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help: add `#![feature(const_trait_impl)]` to the crate attributes to enable
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LL + #![feature(const_trait_impl)]
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error: aborting due to 3 previous errors
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Some errors have detailed explanations: E0015, E0658.
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For more information about an error, try `rustc --explain E0015`.
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