| error[E0049]: method `a` has 1 const parameter but its trait declaration has 0 const parameters |
| --> $DIR/const-closure-trait-method.rs:5:1 |
| | |
| LL | #[const_trait] |
| | ^^^^^^^^^^^^^^ found 1 const parameter |
| LL | trait Tr { |
| LL | fn a(self) -> i32; |
| | - expected 0 const parameters |
| |
| error: `~const` can only be applied to `#[const_trait]` traits |
| --> $DIR/const-closure-trait-method.rs:14:39 |
| | |
| LL | const fn need_const_closure<T: ~const FnOnce(()) -> i32>(x: T) -> i32 { |
| | ^^^^^^^^^^^^^^^^^ |
| |
| error[E0015]: cannot call non-const closure in constant functions |
| --> $DIR/const-closure-trait-method.rs:15:5 |
| | |
| LL | x(()) |
| | ^^^^^ |
| | |
| = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants |
| help: consider further restricting this bound |
| | |
| LL | const fn need_const_closure<T: ~const FnOnce(()) -> i32 + ~const FnOnce(())>(x: T) -> i32 { |
| | +++++++++++++++++++ |
| help: add `#![feature(effects)]` to the crate attributes to enable |
| | |
| LL + #![feature(effects)] |
| | |
| |
| error: aborting due to 3 previous errors |
| |
| Some errors have detailed explanations: E0015, E0049. |
| For more information about an error, try `rustc --explain E0015`. |
