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e6bd6c2044
Always use the `Fn(T) -> R` format when printing closure traits instead of `Fn<(T,), Output = R>`. Fix #67100: ``` error[E0277]: expected a `Fn()` closure, found `F` --> file.rs:6:13 | 6 | call_fn(f) | ------- ^ expected an `Fn()` closure, found `F` | | | required by a bound introduced by this call | = note: wrap the `F` in a closure with no arguments: `|| { /* code */ }` note: required by a bound in `call_fn` --> file.rs:1:15 | 1 | fn call_fn<F: Fn() -> ()>(f: &F) { | ^^^^^^^^^^ required by this bound in `call_fn` help: consider further restricting this bound | 5 | fn call_any<F: std::any::Any + Fn()>(f: &F) { | ++++++ ```
45 lines
1.8 KiB
Plaintext
45 lines
1.8 KiB
Plaintext
error: `~const` can only be applied to `#[const_trait]` traits
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--> $DIR/unstable-const-fn-in-libcore.rs:19:39
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LL | const fn unwrap_or_else<F: ~const FnOnce() -> T>(self, f: F) -> T {
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| ^^^^^^^^^^^^^
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error[E0015]: cannot call non-const closure in constant functions
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--> $DIR/unstable-const-fn-in-libcore.rs:24:26
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LL | Opt::None => f(),
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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 unwrap_or_else<F: ~const FnOnce() -> T + ~const FnOnce()>(self, f: F) -> T {
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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[E0493]: destructor of `F` cannot be evaluated at compile-time
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--> $DIR/unstable-const-fn-in-libcore.rs:19:60
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LL | const fn unwrap_or_else<F: ~const FnOnce() -> T>(self, f: F) -> T {
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| ^ the destructor for this type cannot be evaluated in constant functions
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...
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LL | }
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| - value is dropped here
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error[E0493]: destructor of `Opt<T>` cannot be evaluated at compile-time
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--> $DIR/unstable-const-fn-in-libcore.rs:19:54
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LL | const fn unwrap_or_else<F: ~const FnOnce() -> T>(self, f: F) -> T {
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| ^^^^ the destructor for this type cannot be evaluated in constant functions
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...
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LL | }
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| - value is dropped here
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error: aborting due to 4 previous errors
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Some errors have detailed explanations: E0015, E0493.
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For more information about an error, try `rustc --explain E0015`.
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