mirror of https://github.com/rust-lang/rust
26 lines
982 B
Plaintext
26 lines
982 B
Plaintext
error: `~const` can only be applied to `#[const_trait]` traits
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--> $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 {
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| ^^^^^^^^^^^^^^^^^
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error[E0015]: cannot call non-const closure in constant functions
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--> $DIR/const-closure-trait-method.rs:15:5
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LL | x(())
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| ^^^^^
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= note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
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help: consider further restricting this bound
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LL | const fn need_const_closure<T: ~const FnOnce(()) -> i32 + ~const std::ops::FnOnce<((),)>>(x: T) -> i32 {
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| ++++++++++++++++++++++++++++++++
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help: add `#![feature(effects)]` to the crate attributes to enable
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LL + #![feature(effects)]
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0015`.
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