rust/tests/ui/impl-trait/normalize-tait-in-const.stderr
2024-04-24 13:12:33 +01:00

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error: `~const` can only be applied to `#[const_trait]` traits
--> $DIR/normalize-tait-in-const.rs:24:42
|
LL | const fn with_positive<F: ~const for<'a> Fn(&'a Alias<'a>) + ~const Destruct>(fun: F) {
| ^^^^^^^^^^^^^^^^^
error[E0015]: cannot call non-const closure in constant functions
--> $DIR/normalize-tait-in-const.rs:25:5
|
LL | fun(filter_positive());
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
help: consider further restricting this bound
|
LL | const fn with_positive<F: ~const for<'a> Fn(&'a Alias<'a>) + ~const Destruct + ~const std::ops::Fn<(&Alias<'_>,)>>(fun: F) {
| ++++++++++++++++++++++++++++++++++++
help: add `#![feature(effects)]` to the crate attributes to enable
|
LL + #![feature(effects)]
|
error[E0493]: destructor of `F` cannot be evaluated at compile-time
--> $DIR/normalize-tait-in-const.rs:24:79
|
LL | const fn with_positive<F: ~const for<'a> Fn(&'a Alias<'a>) + ~const Destruct>(fun: F) {
| ^^^ the destructor for this type cannot be evaluated in constant functions
LL | fun(filter_positive());
LL | }
| - value is dropped here
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0015, E0493.
For more information about an error, try `rustc --explain E0015`.