[rustc.git] / src / test / ui / issues / issue-18959.stderr

error[E0038]: the trait `Bar` cannot be made into an object
  --> $DIR/issue-18959.rs:11:12
   |
LL | fn foo(b: &dyn Bar) {
   |            ^^^^^^^ `Bar` 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/issue-18959.rs:1:20
   |
LL | pub trait Foo { fn foo<T>(&self, ext_thing: &T); }
   |                    ^^^ ...because method `foo` has generic type parameters
LL | pub trait Bar: Foo { }
   |           --- this trait cannot be made into an object...
   = help: consider moving `foo` to another trait

error: aborting due to previous error

For more information about this error, try `rustc --explain E0038`.
Commit	Line	Data
8faf50e0	1	error[E0038]: the trait `Bar` cannot be made into an object
136023e0	2	--> $DIR/issue-18959.rs:11:12
8faf50e0	3	\|
dc9dc135	4	LL \| fn foo(b: &dyn Bar) {
136023e0	5	\| ^^^^^^^ `Bar` cannot be made into an object
74b04a01	6	\|
29967ef6 XL	7	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>
	8	--> $DIR/issue-18959.rs:1:20
	9	\|
	10	LL \| pub trait Foo { fn foo<T>(&self, ext_thing: &T); }
	11	\| ^^^ ...because method `foo` has generic type parameters
	12	LL \| pub trait Bar: Foo { }
	13	\| --- this trait cannot be made into an object...
c295e0f8	14	= help: consider moving `foo` to another trait
8faf50e0 XL	15
	16	error: aborting due to previous error
	17
	18	For more information about this error, try `rustc --explain E0038`.