diff options
Diffstat (limited to 'tests/ui/object-safety/issue-19538.stderr')
-rw-r--r-- | tests/ui/object-safety/issue-19538.stderr | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tests/ui/object-safety/issue-19538.stderr b/tests/ui/object-safety/issue-19538.stderr new file mode 100644 index 000000000..8420637b3 --- /dev/null +++ b/tests/ui/object-safety/issue-19538.stderr @@ -0,0 +1,37 @@ +error[E0038]: the trait `Bar` cannot be made into an object + --> $DIR/issue-19538.rs:17:15 + | +LL | let test: &mut dyn Bar = &mut thing; + | ^^^^^^^^^^^^ `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-19538.rs:2:8 + | +LL | fn foo<T>(&self, val: T); + | ^^^ ...because method `foo` has generic type parameters +... +LL | trait Bar: Foo { } + | --- this trait cannot be made into an object... + = help: consider moving `foo` to another trait + +error[E0038]: the trait `Bar` cannot be made into an object + --> $DIR/issue-19538.rs:17:30 + | +LL | let test: &mut dyn Bar = &mut thing; + | ^^^^^^^^^^ `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-19538.rs:2:8 + | +LL | fn foo<T>(&self, val: T); + | ^^^ ...because method `foo` has generic type parameters +... +LL | trait Bar: Foo { } + | --- this trait cannot be made into an object... + = help: consider moving `foo` to another trait + = note: required for `&mut Thing` to implement `CoerceUnsized<&mut dyn Bar>` + = note: required by cast to type `&mut dyn Bar` + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0038`. |