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error: `~const` can only be applied to `#[const_trait]` traits
--> $DIR/normalize-tait-in-const.rs:27:35
|
LL | const fn with_positive<F: for<'a> ~const Fn(&'a Alias<'a>) + ~const Destruct>(fun: F) {
| ^^^^^^ can't be applied to `Fn`
|
note: `Fn` can't be used with `~const` because it isn't annotated with `#[const_trait]`
--> $SRC_DIR/core/src/ops/function.rs:LL:COL
error: `~const` can only be applied to `#[const_trait]` traits
--> $DIR/normalize-tait-in-const.rs:27:35
|
LL | const fn with_positive<F: for<'a> ~const Fn(&'a Alias<'a>) + ~const Destruct>(fun: F) {
| ^^^^^^ can't be applied to `Fn`
|
note: `Fn` can't be used with `~const` because it isn't annotated with `#[const_trait]`
--> $SRC_DIR/core/src/ops/function.rs:LL:COL
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
error: unconstrained opaque type
--> $DIR/normalize-tait-in-const.rs:14:26
|
LL | pub type Alias<'a> = impl T<Item = &'a ()>;
| ^^^^^^^^^^^^^^^^^^^^^
|
= note: `Alias` must be used in combination with a concrete type within the same crate
error[E0015]: cannot call non-const closure in constant functions
--> $DIR/normalize-tait-in-const.rs:28:5
|
LL | fun(filter_positive());
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
error[E0308]: mismatched types
--> $DIR/normalize-tait-in-const.rs:22:9
|
LL | pub type Alias<'a> = impl T<Item = &'a ()>;
| --------------------- the expected opaque type
...
LL | pub const fn filter_positive<'a>() -> &'a Alias<'a> {
| ------------- expected `&'a foo::Alias<'a>` because of return type
LL | &&S
| ^^^ expected `&Alias<'_>`, found `&&S`
|
= note: expected reference `&'a foo::Alias<'a>`
found reference `&&S`
note: this item must have a `#[define_opaque(foo::Alias)]` attribute to be able to define hidden types
--> $DIR/normalize-tait-in-const.rs:21:18
|
LL | pub const fn filter_positive<'a>() -> &'a Alias<'a> {
| ^^^^^^^^^^^^^^^
error: aborting due to 5 previous errors
Some errors have detailed explanations: E0015, E0308.
For more information about an error, try `rustc --explain E0015`.
|
