rust/tests/ui/rfcs/rfc-2632-const-trait-impl/trait-where-clause.stderr
Raekye 884af362f2 Validate ~const trait bounds on associated fns.
Previously, any associated function could have `~const` trait bounds on
generic parameters, which could lead to ICEs when these bounds were used
on associated functions of non-`#[const_trait] trait` or
non-`impl const` blocks.

Includes changes as per @fee1-dead's comments in #116210.
2023-09-30 19:00:45 -04:00

60 lines
1.7 KiB
Plaintext

error: `~const` is not allowed here
--> $DIR/trait-where-clause.rs:8:24
|
LL | fn b() where Self: ~const Bar;
| ^^^^^^^^^^
|
note: this function is not `const`, so it cannot have `~const` trait bounds
--> $DIR/trait-where-clause.rs:8:8
|
LL | fn b() where Self: ~const Bar;
| ^
error: `~const` is not allowed here
--> $DIR/trait-where-clause.rs:10:13
|
LL | fn c<T: ~const Bar>();
| ^^^^^^^^^^
|
note: this function is not `const`, so it cannot have `~const` trait bounds
--> $DIR/trait-where-clause.rs:10:8
|
LL | fn c<T: ~const Bar>();
| ^
error[E0277]: the trait bound `T: Bar` is not satisfied
--> $DIR/trait-where-clause.rs:16:5
|
LL | T::b();
| ^ the trait `Bar` is not implemented for `T`
|
note: required by a bound in `Foo::b`
--> $DIR/trait-where-clause.rs:8:24
|
LL | fn b() where Self: ~const Bar;
| ^^^^^^^^^^ required by this bound in `Foo::b`
help: consider further restricting this bound
|
LL | fn test1<T: Foo + Bar>() {
| +++++
error[E0277]: the trait bound `T: Bar` is not satisfied
--> $DIR/trait-where-clause.rs:18:12
|
LL | T::c::<T>();
| ^ the trait `Bar` is not implemented for `T`
|
note: required by a bound in `Foo::c`
--> $DIR/trait-where-clause.rs:10:13
|
LL | fn c<T: ~const Bar>();
| ^^^^^^^^^^ required by this bound in `Foo::c`
help: consider further restricting this bound
|
LL | fn test1<T: Foo + Bar>() {
| +++++
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0277`.