mirror of https://github.com/rust-lang/rust
210 lines
7.9 KiB
Plaintext
210 lines
7.9 KiB
Plaintext
error: lifetime in trait object type must be followed by `+`
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:29
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^^
|
|
|
|
error: parenthesized generic arguments cannot be used in associated type constraints
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:27
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^^^^^
|
|
|
|
|
help: use angle brackets instead
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y<'a> = &'a ()>>) {}
|
|
| ~ ~
|
|
|
|
error: parenthesized generic arguments cannot be used in associated type constraints
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:18:27
|
|
|
|
|
LL | fn bar<'a>(arg: Box<dyn X<Y() = ()>>) {}
|
|
| ^--
|
|
| |
|
|
| help: remove these parentheses
|
|
|
|
error[E0107]: associated type takes 1 lifetime argument but 0 lifetime arguments were supplied
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:27
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^ expected 1 lifetime argument
|
|
|
|
|
note: associated type defined here, with 1 lifetime parameter: `'a`
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | type Y<'a>;
|
|
| ^ --
|
|
help: add missing lifetime argument
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('_, 'a) = &'a ()>>) {}
|
|
| +++
|
|
|
|
error[E0107]: associated type takes 0 generic arguments but 1 generic argument was supplied
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:27
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^---- help: remove these generics
|
|
| |
|
|
| expected 0 generic arguments
|
|
|
|
|
note: associated type defined here, with 0 generic parameters
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | type Y<'a>;
|
|
| ^
|
|
|
|
error[E0107]: associated type takes 1 lifetime argument but 0 lifetime arguments were supplied
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:27
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^ expected 1 lifetime argument
|
|
|
|
|
note: associated type defined here, with 1 lifetime parameter: `'a`
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | type Y<'a>;
|
|
| ^ --
|
|
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
|
|
help: add missing lifetime argument
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('_, 'a) = &'a ()>>) {}
|
|
| +++
|
|
|
|
error[E0107]: associated type takes 0 generic arguments but 1 generic argument was supplied
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:27
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^---- help: remove these generics
|
|
| |
|
|
| expected 0 generic arguments
|
|
|
|
|
note: associated type defined here, with 0 generic parameters
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | type Y<'a>;
|
|
| ^
|
|
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
|
|
|
|
error[E0107]: associated type takes 1 lifetime argument but 0 lifetime arguments were supplied
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:27
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^ expected 1 lifetime argument
|
|
|
|
|
note: associated type defined here, with 1 lifetime parameter: `'a`
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | type Y<'a>;
|
|
| ^ --
|
|
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
|
|
help: add missing lifetime argument
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('_, 'a) = &'a ()>>) {}
|
|
| +++
|
|
|
|
error[E0107]: associated type takes 0 generic arguments but 1 generic argument was supplied
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:27
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^---- help: remove these generics
|
|
| |
|
|
| expected 0 generic arguments
|
|
|
|
|
note: associated type defined here, with 0 generic parameters
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | type Y<'a>;
|
|
| ^
|
|
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
|
|
|
|
error[E0224]: at least one trait is required for an object type
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:29
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^^
|
|
|
|
error[E0038]: the trait `X` cannot be made into an object
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:5:21
|
|
|
|
|
LL | fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
|
|
| ^^^^^^^^^^^^^^^^^^^^^ `X` cannot be made into an object
|
|
|
|
|
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | trait X {
|
|
| - this trait cannot be made into an object...
|
|
LL | type Y<'a>;
|
|
| ^ ...because it contains the generic associated type `Y`
|
|
= help: consider moving `Y` to another trait
|
|
|
|
error[E0107]: associated type takes 1 lifetime argument but 0 lifetime arguments were supplied
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:18:27
|
|
|
|
|
LL | fn bar<'a>(arg: Box<dyn X<Y() = ()>>) {}
|
|
| ^ expected 1 lifetime argument
|
|
|
|
|
note: associated type defined here, with 1 lifetime parameter: `'a`
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | type Y<'a>;
|
|
| ^ --
|
|
help: add missing lifetime argument
|
|
|
|
|
LL | fn bar<'a>(arg: Box<dyn X<Y('_) = ()>>) {}
|
|
| ++
|
|
|
|
error[E0107]: associated type takes 1 lifetime argument but 0 lifetime arguments were supplied
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:18:27
|
|
|
|
|
LL | fn bar<'a>(arg: Box<dyn X<Y() = ()>>) {}
|
|
| ^ expected 1 lifetime argument
|
|
|
|
|
note: associated type defined here, with 1 lifetime parameter: `'a`
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | type Y<'a>;
|
|
| ^ --
|
|
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
|
|
help: add missing lifetime argument
|
|
|
|
|
LL | fn bar<'a>(arg: Box<dyn X<Y('_) = ()>>) {}
|
|
| ++
|
|
|
|
error[E0107]: associated type takes 1 lifetime argument but 0 lifetime arguments were supplied
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:18:27
|
|
|
|
|
LL | fn bar<'a>(arg: Box<dyn X<Y() = ()>>) {}
|
|
| ^ expected 1 lifetime argument
|
|
|
|
|
note: associated type defined here, with 1 lifetime parameter: `'a`
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | type Y<'a>;
|
|
| ^ --
|
|
= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
|
|
help: add missing lifetime argument
|
|
|
|
|
LL | fn bar<'a>(arg: Box<dyn X<Y('_) = ()>>) {}
|
|
| ++
|
|
|
|
error[E0038]: the trait `X` cannot be made into an object
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:18:21
|
|
|
|
|
LL | fn bar<'a>(arg: Box<dyn X<Y() = ()>>) {}
|
|
| ^^^^^^^^^^^^^^^ `X` cannot be made into an object
|
|
|
|
|
note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
|
|
--> $DIR/gat-trait-path-parenthesised-args.rs:2:8
|
|
|
|
|
LL | trait X {
|
|
| - this trait cannot be made into an object...
|
|
LL | type Y<'a>;
|
|
| ^ ...because it contains the generic associated type `Y`
|
|
= help: consider moving `Y` to another trait
|
|
|
|
error: aborting due to 15 previous errors
|
|
|
|
Some errors have detailed explanations: E0038, E0107, E0224.
|
|
For more information about an error, try `rustc --explain E0038`.
|