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rust/tests/ui/rfcs/rfc-2632-const-trait-impl/call-generic-method-pass.stderr
2024-06-22 14:11:11 +00:00

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warning: the feature `effects` is incomplete and may not be safe to use and/or cause compiler crashes
--> $DIR/call-generic-method-pass.rs:6:30
|
LL | #![feature(const_trait_impl, effects)]
| ^^^^^^^
|
= note: see issue #102090 <https://github.com/rust-lang/rust/issues/102090> for more information
= note: `#[warn(incomplete_features)]` on by default
error: const `impl` for trait `PartialEq` which is not marked with `#[const_trait]`
--> $DIR/call-generic-method-pass.rs:10:12
|
LL | impl const PartialEq for S {
| ^^^^^^^^^
|
= note: marking a trait with `#[const_trait]` ensures all default method bodies are `const`
= note: adding a non-const method body in the future would be a breaking change
error[E0207]: the const parameter `host` is not constrained by the impl trait, self type, or predicates
--> $DIR/call-generic-method-pass.rs:10:6
|
LL | impl const PartialEq for S {
| ^^^^^ unconstrained const parameter
|
= note: expressions using a const parameter must map each value to a distinct output value
= note: proving the result of expressions other than the parameter are unique is not supported
error: `~const` can only be applied to `#[const_trait]` traits
--> $DIR/call-generic-method-pass.rs:19:32
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LL | const fn equals_self<T: ~const PartialEq>(t: &T) -> bool {
| ^^^^^^^^^
error[E0284]: type annotations needed
--> $DIR/call-generic-method-pass.rs:23:22
|
LL | pub const EQ: bool = equals_self(&S);
| ^^^^^^^^^^^^^^^ cannot infer the value of the constant `_`
|
note: required for `S` to implement `PartialEq`
--> $DIR/call-generic-method-pass.rs:10:12
|
LL | impl const PartialEq for S {
| ----- ^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
error[E0284]: type annotations needed
--> $DIR/call-generic-method-pass.rs:15:10
|
LL | !self.eq(other)
| ^^^^^^^^^^^^^^ cannot infer the value of the constant `_`
|
note: required for `S` to implement `PartialEq`
--> $DIR/call-generic-method-pass.rs:10:12
|
LL | impl const PartialEq for S {
| ----- ^^^^^^^^^ ^
| |
| unsatisfied trait bound introduced here
error: aborting due to 5 previous errors; 1 warning emitted
Some errors have detailed explanations: E0207, E0284.
For more information about an error, try `rustc --explain E0207`.