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error: `~const` can only be applied to `#[const_trait]` traits
--> $DIR/const-closure-trait-method.rs:14:39
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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`.
|
