| 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: add `#![feature(effects)]` to the crate attributes to enable |
| help: consider further restricting this bound |
| | |
| LL | const fn need_const_closure<T: ~const FnOnce(()) -> i32 + ~const std::ops::FnOnce<((),)>>(x: T) -> i32 { |
| | ++++++++++++++++++++++++++++++++ |
| |
| error: aborting due to 2 previous errors |
| |
| For more information about this error, try `rustc --explain E0015`. |
